== sanity test 398b: DIO and buffer IO race ============== 19:02:51 (1781823771) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 15.6038 s, 3.2 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=146714: Thu Jun 18 19:08:21 2026 read: IOPS=5, BW=21.3KiB/s (21.8kB/s)(5992KiB/280989msec) clat (usec): min=54, max=2024.4k, avg=94996.31, stdev=87685.47 lat (usec): min=54, max=2024.4k, avg=95005.23, stdev=87685.72 clat percentiles (usec): | 1.00th=[ 87], 5.00th=[ 212], 10.00th=[ 34341], | 20.00th=[ 47449], 30.00th=[ 58459], 40.00th=[ 68682], | 50.00th=[ 79168], 60.00th=[ 92799], 70.00th=[ 108528], | 80.00th=[ 129500], 90.00th=[ 166724], 95.00th=[ 206570], | 99.00th=[ 354419], 99.50th=[ 501220], 99.90th=[ 968885], | 99.95th=[2021655], 99.99th=[2021655] bw ( KiB/s): min= 7, max= 63, per=26.41%, avg=22.45, stdev=11.70, samples=508 iops : min= 1, max= 15, avg= 4.91, stdev= 2.96, samples=508 write: IOPS=5, BW=22.4KiB/s (22.9kB/s)(6296KiB/280989msec); 0 zone resets clat (usec): min=1929, max=886049, avg=87675.13, stdev=84347.65 lat (usec): min=1932, max=886051, avg=87684.75, stdev=84344.08 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 7], 10.00th=[ 11], 20.00th=[ 18], | 30.00th=[ 29], 40.00th=[ 48], 50.00th=[ 69], 60.00th=[ 89], | 70.00th=[ 112], 80.00th=[ 142], 90.00th=[ 194], 95.00th=[ 249], | 99.00th=[ 347], 99.50th=[ 405], 99.90th=[ 743], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7, max= 102, per=26.07%, avg=23.21, stdev=12.61, samples=517 iops : min= 1, max= 25, avg= 5.10, stdev= 3.18, samples=517 lat (usec) : 100=1.24%, 250=1.20%, 500=0.16%, 750=0.03%, 1000=0.03% lat (msec) : 2=0.16%, 4=1.37%, 10=3.74%, 20=7.65%, 50=16.28% lat (msec) : 100=33.63%, 250=30.73%, 500=3.42%, 750=0.20%, 1000=0.13% lat (msec) : >=2000=0.03% cpu : usr=0.06%, sys=4.34%, ctx=8114, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146715: Thu Jun 18 19:08:21 2026 read: IOPS=5, BW=21.5KiB/s (22.0kB/s)(5940KiB/276375msec) clat (usec): min=51, max=779993, avg=94355.24, stdev=66786.33 lat (usec): min=51, max=779995, avg=94363.29, stdev=66785.58 clat percentiles (usec): | 1.00th=[ 87], 5.00th=[ 388], 10.00th=[ 33817], 20.00th=[ 50070], | 30.00th=[ 58983], 40.00th=[ 69731], 50.00th=[ 81265], 60.00th=[ 95945], | 70.00th=[111674], 80.00th=[130548], 90.00th=[166724], 95.00th=[208667], | 99.00th=[329253], 99.50th=[425722], 99.90th=[583009], 99.95th=[775947], | 99.99th=[775947] bw ( KiB/s): min= 5, max= 64, per=26.22%, avg=22.29, stdev=11.31, samples=507 iops : min= 1, max= 16, avg= 4.87, stdev= 2.86, samples=507 write: IOPS=5, BW=22.0KiB/s (23.5kB/s)(6348KiB/276375msec); 0 zone resets clat (usec): min=1502, max=2033.4k, avg=85479.90, stdev=95719.08 lat (usec): min=1503, max=2033.4k, avg=85486.51, stdev=95718.21 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 7], 10.00th=[ 10], 20.00th=[ 17], | 30.00th=[ 27], 40.00th=[ 45], 50.00th=[ 65], 60.00th=[ 84], | 70.00th=[ 108], 80.00th=[ 138], 90.00th=[ 188], 95.00th=[ 234], | 99.00th=[ 372], 99.50th=[ 443], 99.90th=[ 961], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 79, per=26.54%, avg=23.63, stdev=13.15, samples=512 iops : min= 1, max= 19, avg= 5.21, stdev= 3.33, samples=512 lat (usec) : 100=1.43%, 250=0.85%, 500=0.20%, 750=0.03% lat (msec) : 2=0.07%, 4=1.60%, 10=4.07%, 20=7.45%, 50=15.82% lat (msec) : 100=34.08%, 250=31.32%, 500=2.80%, 750=0.20%, 1000=0.07% lat (msec) : >=2000=0.03% cpu : usr=0.07%, sys=4.30%, ctx=7902, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146716: Thu Jun 18 19:08:21 2026 read: IOPS=5, BW=21.5KiB/s (21.0kB/s)(6028KiB/280627msec) clat (usec): min=47, max=2032.8k, avg=96939.92, stdev=84898.82 lat (usec): min=47, max=2032.8k, avg=96951.49, stdev=84895.34 clat percentiles (usec): | 1.00th=[ 86], 5.00th=[ 400], 10.00th=[ 36439], | 20.00th=[ 49546], 30.00th=[ 60031], 40.00th=[ 70779], | 50.00th=[ 81265], 60.00th=[ 93848], 70.00th=[ 111674], | 80.00th=[ 132645], 90.00th=[ 170918], 95.00th=[ 206570], | 99.00th=[ 358613], 99.50th=[ 404751], 99.90th=[ 717226], | 99.95th=[2038432], 99.99th=[2038432] bw ( KiB/s): min= 5, max= 63, per=26.30%, avg=22.36, stdev=11.69, samples=513 iops : min= 1, max= 15, avg= 4.89, stdev= 2.95, samples=513 write: IOPS=5, BW=22.3KiB/s (22.8kB/s)(6260KiB/280627msec); 0 zone resets clat (usec): min=1863, max=731134, avg=85531.17, stdev=79712.30 lat (usec): min=1866, max=731137, avg=85543.13, stdev=79710.44 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 7], 10.00th=[ 11], 20.00th=[ 17], | 30.00th=[ 28], 40.00th=[ 47], 50.00th=[ 68], 60.00th=[ 89], | 70.00th=[ 110], 80.00th=[ 140], 90.00th=[ 186], 95.00th=[ 232], | 99.00th=[ 363], 99.50th=[ 409], 99.90th=[ 667], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 63, per=25.99%, avg=23.13, stdev=11.92, samples=515 iops : min= 1, max= 15, avg= 5.08, stdev= 3.02, samples=515 lat (usec) : 50=0.07%, 100=1.17%, 250=0.91%, 500=0.33%, 750=0.07% lat (usec) : 1000=0.07% lat (msec) : 2=0.16%, 4=1.20%, 10=3.71%, 20=7.26%, 50=16.21% lat (msec) : 100=32.68%, 250=32.62%, 500=3.22%, 750=0.29%, >=2000=0.03% cpu : usr=0.07%, sys=4.35%, ctx=8128, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146717: Thu Jun 18 19:08:21 2026 read: IOPS=5, BW=21.7KiB/s (22.2kB/s)(6052KiB/278601msec) clat (usec): min=56, max=2090.9k, avg=92383.89, stdev=80081.65 lat (usec): min=57, max=2090.9k, avg=92393.31, stdev=80085.93 clat percentiles (usec): | 1.00th=[ 83], 5.00th=[ 330], 10.00th=[ 33162], | 20.00th=[ 46924], 30.00th=[ 56886], 40.00th=[ 67634], | 50.00th=[ 79168], 60.00th=[ 90702], 70.00th=[ 107480], | 80.00th=[ 131597], 90.00th=[ 164627], 95.00th=[ 204473], | 99.00th=[ 299893], 99.50th=[ 341836], 99.90th=[ 784335], | 99.95th=[2088764], 99.99th=[2088764] bw ( KiB/s): min= 6, max= 63, per=26.62%, avg=22.63, stdev=12.22, samples=509 iops : min= 1, max= 15, avg= 4.95, stdev= 3.08, samples=509 write: IOPS=5, BW=22.4KiB/s (22.9kB/s)(6236KiB/278601msec); 0 zone resets clat (usec): min=1803, max=859903, avg=88715.79, stdev=84841.06 lat (usec): min=1804, max=859906, avg=88729.97, stdev=84834.75 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 7], 10.00th=[ 11], 20.00th=[ 17], | 30.00th=[ 30], 40.00th=[ 51], 50.00th=[ 71], 60.00th=[ 89], | 70.00th=[ 111], 80.00th=[ 142], 90.00th=[ 194], 95.00th=[ 247], | 99.00th=[ 376], 99.50th=[ 439], 99.90th=[ 760], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7, max= 63, per=25.76%, avg=22.92, stdev=12.36, samples=517 iops : min= 1, max= 15, avg= 5.03, stdev= 3.13, samples=517 lat (usec) : 100=1.69%, 250=0.75%, 500=0.10%, 750=0.13%, 1000=0.07% lat (msec) : 2=0.16%, 4=1.17%, 10=3.58%, 20=7.81%, 50=16.54% lat (msec) : 100=33.56%, 250=30.92%, 500=3.22%, 750=0.16%, 1000=0.10% lat (msec) : >=2000=0.03% cpu : usr=0.06%, sys=4.24%, ctx=8045, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=85.5KiB/s (87.5kB/s), 21.3KiB/s-21.7KiB/s (21.8kB/s-22.2kB/s), io=23.4MiB (24.6MB), run=276375-280989msec WRITE: bw=89.5KiB/s (91.6kB/s), 22.3KiB/s-22.0KiB/s (22.8kB/s-23.5kB/s), io=24.6MiB (25.7MB), run=276375-280989msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146710: Thu Jun 18 19:14:10 2026 read: IOPS=2, BW=9786B/s (9786B/s)(5992KiB/626971msec) clat (msec): min=10, max=2087, avg=89.58, stdev=91.18 lat (msec): min=10, max=2087, avg=89.60, stdev=91.17 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 22], 10.00th=[ 29], 20.00th=[ 37], | 30.00th=[ 46], 40.00th=[ 56], 50.00th=[ 67], 60.00th=[ 81], | 70.00th=[ 97], 80.00th=[ 120], 90.00th=[ 174], 95.00th=[ 239], | 99.00th=[ 414], 99.50th=[ 502], 99.90th=[ 693], 99.95th=[ 2089], | 99.99th=[ 2089] bw ( KiB/s): min= 6, max= 68, per=38.54%, avg=14.64, stdev= 9.81, samples=766 iops : min= 1, max= 17, avg= 2.94, stdev= 2.48, samples=766 write: IOPS=2, BW=10.0KiB/s (10.3kB/s)(6296KiB/626971msec); 0 zone resets clat (msec): min=81, max=1352, avg=312.43, stdev=137.54 lat (msec): min=81, max=1352, avg=312.44, stdev=137.54 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 150], 10.00th=[ 171], 20.00th=[ 199], | 30.00th=[ 230], 40.00th=[ 257], 50.00th=[ 288], 60.00th=[ 321], | 70.00th=[ 359], 80.00th=[ 405], 90.00th=[ 485], 95.00th=[ 567], | 99.00th=[ 760], 99.50th=[ 818], 99.90th=[ 1200], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 6, max= 31, per=27.12%, avg=10.58, stdev= 4.68, samples=1089 iops : min= 1, max= 7, avg= 1.92, stdev= 1.19, samples=1089 lat (msec) : 20=1.63%, 50=14.94%, 100=18.49%, 250=30.89%, 500=29.30% lat (msec) : 750=4.13%, 1000=0.46%, 2000=0.13%, >=2000=0.03% cpu : usr=0.03%, sys=1.23%, ctx=5982, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146711: Thu Jun 18 19:14:10 2026 read: IOPS=2, BW=9646B/s (9646B/s)(5940KiB/630570msec) clat (msec): min=10, max=2172, avg=90.53, stdev=93.81 lat (msec): min=10, max=2172, avg=90.53, stdev=93.81 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 38], | 30.00th=[ 46], 40.00th=[ 55], 50.00th=[ 66], 60.00th=[ 81], | 70.00th=[ 100], 80.00th=[ 123], 90.00th=[ 174], 95.00th=[ 232], | 99.00th=[ 430], 99.50th=[ 481], 99.90th=[ 667], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 64, per=37.78%, avg=14.36, stdev= 9.49, samples=773 iops : min= 1, max= 16, avg= 2.87, stdev= 2.41, samples=773 write: IOPS=2, BW=10.1KiB/s (10.3kB/s)(6348KiB/630570msec); 0 zone resets clat (msec): min=72, max=1415, avg=312.04, stdev=138.55 lat (msec): min=72, max=1415, avg=312.05, stdev=138.55 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 144], 10.00th=[ 165], 20.00th=[ 201], | 30.00th=[ 230], 40.00th=[ 257], 50.00th=[ 288], 60.00th=[ 321], | 70.00th=[ 355], 80.00th=[ 405], 90.00th=[ 489], 95.00th=[ 575], | 99.00th=[ 760], 99.50th=[ 844], 99.90th=[ 1150], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7, max= 31, per=27.29%, avg=10.64, stdev= 4.80, samples=1092 iops : min= 1, max= 7, avg= 1.94, stdev= 1.22, samples=1092 lat (msec) : 20=1.33%, 50=15.30%, 100=17.84%, 250=31.51%, 500=28.97% lat (msec) : 750=4.46%, 1000=0.46%, 2000=0.10%, >=2000=0.03% cpu : usr=0.03%, sys=1.24%, ctx=6072, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146712: Thu Jun 18 19:14:10 2026 read: IOPS=2, BW=9992B/s (9992B/s)(6028KiB/617750msec) clat (msec): min=9, max=743, avg=88.49, stdev=72.13 lat (msec): min=9, max=743, avg=88.50, stdev=72.13 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 24], 10.00th=[ 29], 20.00th=[ 38], | 30.00th=[ 45], 40.00th=[ 56], 50.00th=[ 68], 60.00th=[ 82], | 70.00th=[ 103], 80.00th=[ 125], 90.00th=[ 169], 95.00th=[ 226], | 99.00th=[ 363], 99.50th=[ 393], 99.90th=[ 735], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 6, max= 63, per=37.47%, avg=14.24, stdev= 9.65, samples=791 iops : min= 1, max= 15, avg= 2.84, stdev= 2.43, samples=791 write: IOPS=2, BW=10.1KiB/s (10.4kB/s)(6260KiB/617750msec); 0 zone resets clat (msec): min=78, max=2248, avg=308.89, stdev=138.77 lat (msec): min=78, max=2248, avg=308.90, stdev=138.78 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 144], 10.00th=[ 165], 20.00th=[ 201], | 30.00th=[ 226], 40.00th=[ 253], 50.00th=[ 284], 60.00th=[ 317], | 70.00th=[ 355], 80.00th=[ 401], 90.00th=[ 477], 95.00th=[ 550], | 99.00th=[ 726], 99.50th=[ 818], 99.90th=[ 1183], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 6, max= 31, per=27.52%, avg=10.73, stdev= 4.82, samples=1069 iops : min= 1, max= 7, avg= 1.96, stdev= 1.23, samples=1069 lat (msec) : 10=0.03%, 20=0.88%, 50=16.37%, 100=16.57%, 250=33.01% lat (msec) : 500=29.04%, 750=3.61%, 1000=0.42%, 2000=0.03%, >=2000=0.03% cpu : usr=0.03%, sys=1.28%, ctx=5979, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146713: Thu Jun 18 19:14:10 2026 read: IOPS=2, BW=9912B/s (9912B/s)(6052KiB/625185msec) clat (msec): min=10, max=739, avg=90.86, stdev=81.00 lat (msec): min=10, max=739, avg=90.87, stdev=81.00 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 28], 20.00th=[ 38], | 30.00th=[ 46], 40.00th=[ 56], 50.00th=[ 67], 60.00th=[ 83], | 70.00th=[ 101], 80.00th=[ 125], 90.00th=[ 178], 95.00th=[ 241], | 99.00th=[ 426], 99.50th=[ 506], 99.90th=[ 735], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 70, per=38.05%, avg=14.46, stdev= 9.85, samples=783 iops : min= 1, max= 17, avg= 2.89, stdev= 2.48, samples=783 write: IOPS=2, BW=9.97KiB/s (10.2kB/s)(6236KiB/625185msec); 0 zone resets clat (msec): min=72, max=2297, avg=312.24, stdev=141.57 lat (msec): min=72, max=2297, avg=312.24, stdev=141.57 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 150], 10.00th=[ 169], 20.00th=[ 205], | 30.00th=[ 230], 40.00th=[ 259], 50.00th=[ 292], 60.00th=[ 317], | 70.00th=[ 355], 80.00th=[ 405], 90.00th=[ 477], 95.00th=[ 550], | 99.00th=[ 735], 99.50th=[ 810], 99.90th=[ 1267], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 6, max= 31, per=27.10%, avg=10.57, stdev= 4.69, samples=1080 iops : min= 1, max= 7, avg= 1.92, stdev= 1.19, samples=1080 lat (msec) : 20=1.56%, 50=15.79%, 100=17.42%, 250=30.53%, 500=30.50% lat (msec) : 750=3.84%, 1000=0.20%, 2000=0.13%, >=2000=0.03% cpu : usr=0.03%, sys=1.26%, ctx=5998, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=38.1KiB/s (38.0kB/s), 9646B/s-9992B/s (9646B/s-9992B/s), io=23.4MiB (24.6MB), run=617750-630570msec WRITE: bw=39.9KiB/s (40.8kB/s), 9.97KiB/s-10.1KiB/s (10.2kB/s-10.4kB/s), io=24.6MiB (25.7MB), run=617750-630570msec mix direct rw 16384 by fio with 4 jobs... mix buffer rw 16384 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 16.0KiB-16.0KiB, (W) 16.0KiB-16.0KiB, (T) 16.0KiB-16.0KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=146833: Thu Jun 18 19:15:45 2026 read: IOPS=5, BW=95.7KiB/s (97.0kB/s)(5920KiB/61878msec) clat (usec): min=54, max=373629, avg=83137.38, stdev=61568.25 lat (usec): min=54, max=373631, avg=83201.01, stdev=61749.68 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 89], 10.00th=[ 103], 20.00th=[ 4948], | 30.00th=[ 55837], 40.00th=[ 68682], 50.00th=[ 82314], 60.00th=[ 93848], | 70.00th=[106431], 80.00th=[127402], 90.00th=[156238], 95.00th=[185598], | 99.00th=[263193], 99.50th=[291505], 99.90th=[375391], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 30, max= 254, per=26.58%, avg=98.60, stdev=55.71, samples=116 iops : min= 1, max= 15, avg= 5.33, stdev= 3.56, samples=116 write: IOPS=6, BW=103KiB/s (105kB/s)(6368KiB/61878msec); 0 zone resets clat (msec): min=2, max=456, avg=77.69, stdev=79.06 lat (msec): min=2, max=456, avg=77.70, stdev=79.06 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 8], 10.00th=[ 11], 20.00th=[ 17], | 30.00th=[ 25], 40.00th=[ 33], 50.00th=[ 45], 60.00th=[ 70], | 70.00th=[ 101], 80.00th=[ 134], 90.00th=[ 182], 95.00th=[ 251], | 99.00th=[ 355], 99.50th=[ 388], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 27, max= 285, per=27.42%, avg=107.21, stdev=57.23, samples=115 iops : min= 1, max= 17, avg= 5.89, stdev= 3.64, samples=115 lat (usec) : 100=4.17%, 250=3.52%, 500=0.78%, 750=0.26% lat (msec) : 2=0.13%, 4=0.52%, 10=4.95%, 20=8.85%, 50=17.32% lat (msec) : 100=27.34%, 250=28.65%, 500=3.52% cpu : usr=0.05%, sys=4.61%, ctx=1766, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146834: Thu Jun 18 19:15:45 2026 read: IOPS=5, BW=89.2KiB/s (91.3kB/s)(5744KiB/64404msec) clat (usec): min=60, max=563333, avg=93998.96, stdev=74846.99 lat (usec): min=60, max=563335, avg=94023.78, stdev=74881.76 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 97], 10.00th=[ 123], 20.00th=[ 33817], | 30.00th=[ 59507], 40.00th=[ 71828], 50.00th=[ 86508], 60.00th=[102237], | 70.00th=[121111], 80.00th=[145753], 90.00th=[170918], 95.00th=[214959], | 99.00th=[362808], 99.50th=[471860], 99.90th=[566232], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 27, max= 253, per=25.99%, avg=96.42, stdev=51.96, samples=114 iops : min= 1, max= 15, avg= 5.19, stdev= 3.30, samples=114 write: IOPS=6, BW=102KiB/s (104kB/s)(6544KiB/64404msec); 0 zone resets clat (msec): min=2, max=500, avg=74.53, stdev=76.26 lat (msec): min=2, max=500, avg=74.65, stdev=76.29 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 8], 10.00th=[ 11], 20.00th=[ 16], | 30.00th=[ 22], 40.00th=[ 30], 50.00th=[ 48], 60.00th=[ 71], | 70.00th=[ 94], 80.00th=[ 121], 90.00th=[ 180], 95.00th=[ 222], | 99.00th=[ 355], 99.50th=[ 426], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 27, max= 284, per=26.30%, avg=102.84, stdev=54.98, samples=122 iops : min= 1, max= 17, avg= 5.61, stdev= 3.50, samples=122 lat (usec) : 100=2.73%, 250=3.52%, 500=0.52%, 750=0.13%, 1000=0.39% lat (msec) : 2=0.26%, 4=0.78%, 10=4.30%, 20=10.29%, 50=16.15% lat (msec) : 100=26.17%, 250=31.77%, 500=2.73%, 750=0.26% cpu : usr=0.05%, sys=4.29%, ctx=1850, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146835: Thu Jun 18 19:15:45 2026 read: IOPS=6, BW=98.1KiB/s (100kB/s)(6256KiB/63779msec) clat (usec): min=52, max=446912, avg=88788.83, stdev=67550.75 lat (usec): min=52, max=446912, avg=88829.81, stdev=67562.55 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 86], 10.00th=[ 102], 20.00th=[ 27132], | 30.00th=[ 55837], 40.00th=[ 69731], 50.00th=[ 81265], 60.00th=[101188], | 70.00th=[117965], 80.00th=[141558], 90.00th=[166724], 95.00th=[200279], | 99.00th=[287310], 99.50th=[400557], 99.90th=[446694], 99.95th=[446694], | 99.99th=[446694] bw ( KiB/s): min= 29, max= 253, per=26.43%, avg=98.05, stdev=48.27, samples=124 iops : min= 1, max= 15, avg= 5.29, stdev= 3.05, samples=124 write: IOPS=5, BW=94.6KiB/s (96.8kB/s)(6032KiB/63779msec); 0 zone resets clat (msec): min=2, max=375, avg=76.71, stdev=71.82 lat (msec): min=2, max=375, avg=76.74, stdev=71.85 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 8], 10.00th=[ 12], 20.00th=[ 18], | 30.00th=[ 27], 40.00th=[ 36], 50.00th=[ 55], 60.00th=[ 77], | 70.00th=[ 97], 80.00th=[ 124], 90.00th=[ 186], 95.00th=[ 226], | 99.00th=[ 313], 99.50th=[ 338], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 30, max= 237, per=24.33%, avg=95.14, stdev=46.81, samples=122 iops : min= 1, max= 14, avg= 5.11, stdev= 2.98, samples=122 lat (usec) : 100=5.08%, 250=2.86%, 500=0.78%, 750=0.13%, 1000=0.13% lat (msec) : 2=0.26%, 4=0.65%, 10=4.56%, 20=7.55%, 50=14.71% lat (msec) : 100=28.78%, 250=31.64%, 500=2.86% cpu : usr=0.07%, sys=4.55%, ctx=1903, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146836: Thu Jun 18 19:15:45 2026 read: IOPS=6, BW=96.3KiB/s (98.6kB/s)(6032KiB/62642msec) clat (usec): min=56, max=407061, avg=90861.17, stdev=72303.54 lat (usec): min=57, max=407063, avg=90907.99, stdev=72311.97 clat percentiles (usec): | 1.00th=[ 62], 5.00th=[ 88], 10.00th=[ 104], 20.00th=[ 9503], | 30.00th=[ 53740], 40.00th=[ 69731], 50.00th=[ 85459], 60.00th=[100140], | 70.00th=[119014], 80.00th=[139461], 90.00th=[175113], 95.00th=[221250], | 99.00th=[350225], 99.50th=[400557], 99.90th=[408945], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 29, max= 317, per=26.59%, avg=98.66, stdev=53.14, samples=118 iops : min= 1, max= 19, avg= 5.34, stdev= 3.39, samples=118 write: IOPS=6, BW=99.9KiB/s (102kB/s)(6256KiB/62642msec); 0 zone resets clat (msec): min=2, max=394, avg=72.29, stdev=69.43 lat (msec): min=2, max=394, avg=72.31, stdev=69.44 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 8], 10.00th=[ 11], 20.00th=[ 16], | 30.00th=[ 21], 40.00th=[ 32], 50.00th=[ 49], 60.00th=[ 69], | 70.00th=[ 95], 80.00th=[ 128], 90.00th=[ 165], 95.00th=[ 213], | 99.00th=[ 338], 99.50th=[ 376], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 30, max= 250, per=26.31%, avg=102.86, stdev=58.31, samples=118 iops : min= 1, max= 15, avg= 5.61, stdev= 3.74, samples=118 lat (usec) : 100=3.52%, 250=4.69%, 500=0.52%, 750=0.26% lat (msec) : 2=0.26%, 4=1.04%, 10=4.04%, 20=10.16%, 50=15.36% lat (msec) : 100=25.65%, 250=31.64%, 500=2.86% cpu : usr=0.07%, sys=4.63%, ctx=1900, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=372KiB/s (381kB/s), 89.2KiB/s-98.1KiB/s (91.3kB/s-100kB/s), io=23.4MiB (24.5MB), run=61878-64404msec WRITE: bw=391KiB/s (401kB/s), 94.6KiB/s-103KiB/s (96.8kB/s-105kB/s), io=24.6MiB (25.8MB), run=61878-64404msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146828: Thu Jun 18 19:17:19 2026 read: IOPS=2, BW=37.5KiB/s (38.4kB/s)(5920KiB/157960msec) clat (msec): min=14, max=581, avg=94.70, stdev=82.06 lat (msec): min=14, max=581, avg=94.70, stdev=82.06 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 27], 10.00th=[ 33], 20.00th=[ 40], | 30.00th=[ 50], 40.00th=[ 59], 50.00th=[ 72], 60.00th=[ 84], | 70.00th=[ 99], 80.00th=[ 130], 90.00th=[ 182], 95.00th=[ 266], | 99.00th=[ 477], 99.50th=[ 489], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 28, max= 191, per=37.90%, avg=56.47, stdev=31.50, samples=203 iops : min= 1, max= 11, avg= 2.66, stdev= 2.00, samples=203 write: IOPS=2, BW=40.3KiB/s (41.3kB/s)(6368KiB/157960msec); 0 zone resets clat (msec): min=82, max=1124, avg=307.89, stdev=125.13 lat (msec): min=82, max=1124, avg=307.89, stdev=125.13 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 159], 10.00th=[ 174], 20.00th=[ 207], | 30.00th=[ 228], 40.00th=[ 255], 50.00th=[ 284], 60.00th=[ 321], | 70.00th=[ 351], 80.00th=[ 397], 90.00th=[ 472], 95.00th=[ 527], | 99.00th=[ 743], 99.50th=[ 818], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 28, max= 95, per=29.07%, avg=45.64, stdev=17.43, samples=270 iops : min= 1, max= 5, avg= 1.97, stdev= 1.12, samples=270 lat (msec) : 20=0.78%, 50=13.93%, 100=19.27%, 250=31.38%, 500=30.34% lat (msec) : 750=3.91%, 1000=0.26%, 2000=0.13% cpu : usr=0.03%, sys=1.20%, ctx=1486, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146829: Thu Jun 18 19:17:19 2026 read: IOPS=2, BW=35.9KiB/s (36.8kB/s)(5744KiB/159887msec) clat (msec): min=13, max=604, avg=95.73, stdev=93.27 lat (msec): min=13, max=604, avg=95.73, stdev=93.27 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 26], 10.00th=[ 32], 20.00th=[ 40], | 30.00th=[ 47], 40.00th=[ 55], 50.00th=[ 64], 60.00th=[ 73], | 70.00th=[ 93], 80.00th=[ 129], 90.00th=[ 201], 95.00th=[ 292], | 99.00th=[ 567], 99.50th=[ 575], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 21, max= 220, per=39.57%, avg=58.96, stdev=35.49, samples=190 iops : min= 1, max= 13, avg= 2.81, stdev= 2.25, samples=190 write: IOPS=2, BW=40.9KiB/s (41.9kB/s)(6544KiB/159887msec); 0 zone resets clat (msec): min=93, max=1127, avg=306.06, stdev=139.13 lat (msec): min=93, max=1127, avg=306.07, stdev=139.13 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 144], 10.00th=[ 174], 20.00th=[ 203], | 30.00th=[ 226], 40.00th=[ 249], 50.00th=[ 271], 60.00th=[ 309], | 70.00th=[ 347], 80.00th=[ 393], 90.00th=[ 464], 95.00th=[ 558], | 99.00th=[ 869], 99.50th=[ 877], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 21, max= 95, per=29.34%, avg=46.07, stdev=18.73, samples=275 iops : min= 1, max= 5, avg= 2.00, stdev= 1.21, samples=275 lat (msec) : 20=0.39%, 50=16.15%, 100=17.06%, 250=31.64%, 500=29.82% lat (msec) : 750=4.30%, 1000=0.52%, 2000=0.13% cpu : usr=0.03%, sys=1.20%, ctx=1544, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146830: Thu Jun 18 19:17:19 2026 read: IOPS=2, BW=40.1KiB/s (41.0kB/s)(6256KiB/156086msec) clat (msec): min=12, max=742, avg=90.29, stdev=83.62 lat (msec): min=12, max=742, avg=90.33, stdev=83.62 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 30], 20.00th=[ 39], | 30.00th=[ 48], 40.00th=[ 55], 50.00th=[ 64], 60.00th=[ 75], | 70.00th=[ 94], 80.00th=[ 116], 90.00th=[ 184], 95.00th=[ 247], | 99.00th=[ 422], 99.50th=[ 575], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 29, max= 250, per=41.19%, avg=61.38, stdev=41.94, samples=199 iops : min= 1, max= 15, avg= 2.98, stdev= 2.65, samples=199 write: IOPS=2, BW=38.6KiB/s (39.6kB/s)(6032KiB/156086msec); 0 zone resets clat (msec): min=93, max=893, avg=319.81, stdev=141.04 lat (msec): min=93, max=893, avg=319.81, stdev=141.04 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 140], 10.00th=[ 171], 20.00th=[ 205], | 30.00th=[ 234], 40.00th=[ 264], 50.00th=[ 292], 60.00th=[ 321], | 70.00th=[ 363], 80.00th=[ 414], 90.00th=[ 531], 95.00th=[ 600], | 99.00th=[ 726], 99.50th=[ 860], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 21, max= 96, per=27.67%, avg=43.43, stdev=18.49, samples=269 iops : min= 1, max= 6, avg= 1.84, stdev= 1.18, samples=269 lat (msec) : 20=0.65%, 50=16.93%, 100=19.66%, 250=28.39%, 500=28.52% lat (msec) : 750=5.60%, 1000=0.26% cpu : usr=0.03%, sys=1.16%, ctx=1485, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146831: Thu Jun 18 19:17:19 2026 read: IOPS=2, BW=38.1KiB/s (39.0kB/s)(6032KiB/158250msec) clat (msec): min=15, max=598, avg=96.48, stdev=89.27 lat (msec): min=15, max=598, avg=96.49, stdev=89.27 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 27], 10.00th=[ 33], 20.00th=[ 41], | 30.00th=[ 50], 40.00th=[ 60], 50.00th=[ 70], 60.00th=[ 80], | 70.00th=[ 96], 80.00th=[ 122], 90.00th=[ 182], 95.00th=[ 309], | 99.00th=[ 464], 99.50th=[ 542], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 29, max= 191, per=39.89%, avg=59.44, stdev=36.02, samples=196 iops : min= 1, max= 11, avg= 2.84, stdev= 2.30, samples=196 write: IOPS=2, BW=39.5KiB/s (40.5kB/s)(6256KiB/158250msec); 0 zone resets clat (msec): min=100, max=782, avg=310.67, stdev=128.60 lat (msec): min=100, max=782, avg=310.68, stdev=128.60 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 155], 10.00th=[ 178], 20.00th=[ 201], | 30.00th=[ 224], 40.00th=[ 257], 50.00th=[ 292], 60.00th=[ 317], | 70.00th=[ 359], 80.00th=[ 401], 90.00th=[ 468], 95.00th=[ 558], | 99.00th=[ 743], 99.50th=[ 776], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 28, max= 95, per=28.63%, avg=44.96, stdev=19.04, samples=270 iops : min= 1, max= 5, avg= 1.93, stdev= 1.22, samples=270 lat (msec) : 20=0.78%, 50=14.32%, 100=20.05%, 250=29.43%, 500=30.99% lat (msec) : 750=4.04%, 1000=0.39% cpu : usr=0.03%, sys=1.31%, ctx=1577, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=150KiB/s (153kB/s), 35.9KiB/s-40.1KiB/s (36.8kB/s-41.0kB/s), io=23.4MiB (24.5MB), run=156086-159887msec WRITE: bw=158KiB/s (161kB/s), 38.6KiB/s-40.9KiB/s (39.6kB/s-41.9kB/s), io=24.6MiB (25.8MB), run=156086-159887msec mix direct rw 1048576 by fio with 4 jobs... mix buffer rw 1048576 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 1024KiB-1024KiB, (W) 1024KiB-1024KiB, (T) 1024KiB-1024KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=146869: Thu Jun 18 19:17:57 2026 read: IOPS=0, BW=474KiB/s (485kB/s)(7168KiB/15121msec) clat (usec): min=693, max=10178k, avg=1717547.42, stdev=3737199.90 lat (usec): min=695, max=10178k, avg=1717549.48, stdev=3737199.74 clat percentiles (usec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], | 20.00th=[ 8225], 30.00th=[ 379585], 40.00th=[ 379585], | 50.00th=[ 421528], 60.00th=[ 497026], 70.00th=[ 497026], | 80.00th=[ 541066], 90.00th=[10133439], 95.00th=[10133439], | 99.00th=[10133439], 99.50th=[10133439], 99.90th=[10133439], | 99.95th=[10133439], 99.99th=[10133439] bw ( KiB/s): min= 2011, max= 4087, per=100.00%, avg=3056.00, stdev=1190.55, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=339KiB/s (347kB/s)(5120KiB/15121msec); 0 zone resets clat (msec): min=285, max=815, avg=580.80, stdev=217.79 lat (msec): min=285, max=815, avg=580.89, stdev=217.78 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 288], 10.00th=[ 288], 20.00th=[ 288], | 30.00th=[ 451], 40.00th=[ 451], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1643, max= 2043, per=100.00%, avg=1957.40, stdev=175.92, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33% lat (msec) : 10=8.33%, 500=41.67%, 750=16.67%, 1000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=5.68%, ctx=597, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146870: Thu Jun 18 19:17:57 2026 read: IOPS=0, BW=145KiB/s (149kB/s)(2048KiB/14095msec) clat (usec): min=1086, max=620402, avg=310744.87, stdev=437922.37 lat (usec): min=1088, max=620405, avg=310747.37, stdev=437923.20 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1090], 10.00th=[ 1090], 20.00th=[ 1090], | 30.00th=[ 1090], 40.00th=[ 1090], 50.00th=[ 1090], 60.00th=[616563], | 70.00th=[616563], 80.00th=[616563], 90.00th=[616563], 95.00th=[616563], | 99.00th=[616563], 99.50th=[616563], 99.90th=[616563], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 2023, max= 2023, per=100.00%, avg=2023.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=0, BW=726KiB/s (744kB/s)(10.0MiB/14095msec); 0 zone resets clat (msec): min=263, max=6022, avg=1328.85, stdev=1752.31 lat (msec): min=263, max=6022, avg=1329.09, stdev=1752.23 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 264], 10.00th=[ 264], 20.00th=[ 279], | 30.00th=[ 498], 40.00th=[ 531], 50.00th=[ 542], 60.00th=[ 760], | 70.00th=[ 802], 80.00th=[ 1351], 90.00th=[ 2232], 95.00th=[ 6007], | 99.00th=[ 6007], 99.50th=[ 6007], 99.90th=[ 6007], 99.95th=[ 6007], | 99.99th=[ 6007] bw ( KiB/s): min= 1600, max= 3806, per=100.00%, avg=2199.00, stdev=666.67, samples=8 iops : min= 1, max= 3, avg= 1.25, stdev= 0.71, samples=8 lat (msec) : 2=8.33%, 500=25.00%, 750=25.00%, 1000=16.67%, 2000=8.33% lat (msec) : >=2000=16.67% cpu : usr=0.00%, sys=7.39%, ctx=288, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146871: Thu Jun 18 19:17:57 2026 read: IOPS=0, BW=458KiB/s (469kB/s)(6144KiB/13408msec) clat (usec): min=620, max=557630, avg=176159.91, stdev=271343.21 lat (usec): min=621, max=557632, avg=176161.69, stdev=271343.28 clat percentiles (usec): | 1.00th=[ 619], 5.00th=[ 619], 10.00th=[ 619], 20.00th=[ 807], | 30.00th=[ 807], 40.00th=[ 1254], 50.00th=[ 1254], 60.00th=[ 3326], | 70.00th=[492831], 80.00th=[492831], 90.00th=[557843], 95.00th=[557843], | 99.00th=[557843], 99.50th=[557843], 99.90th=[557843], 99.95th=[557843], | 99.99th=[557843] bw ( KiB/s): min= 1643, max= 4063, per=100.00%, avg=3251.00, stdev=1392.59, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=458KiB/s (469kB/s)(6144KiB/13408msec); 0 zone resets clat (msec): min=450, max=7724, avg=2046.83, stdev=2885.64 lat (msec): min=450, max=7724, avg=2047.04, stdev=2885.55 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 535], 50.00th=[ 535], 60.00th=[ 625], | 70.00th=[ 2433], 80.00th=[ 2433], 90.00th=[ 7752], 95.00th=[ 7752], | 99.00th=[ 7752], 99.50th=[ 7752], 99.90th=[ 7752], 99.95th=[ 7752], | 99.99th=[ 7752] bw ( KiB/s): min= 1935, max= 2043, per=100.00%, avg=2008.00, stdev=45.13, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 2=8.33%, 4=8.33%, 500=16.67%, 750=33.33%, >=2000=16.67% cpu : usr=0.00%, sys=5.30%, ctx=230, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146872: Thu Jun 18 19:17:57 2026 read: IOPS=0, BW=371KiB/s (380kB/s)(5120KiB/13809msec) clat (usec): min=618, max=623491, avg=244511.56, stdev=302041.25 lat (usec): min=620, max=623493, avg=244513.66, stdev=302041.08 clat percentiles (usec): | 1.00th=[ 619], 5.00th=[ 619], 10.00th=[ 619], 20.00th=[ 619], | 30.00th=[ 1418], 40.00th=[ 1418], 50.00th=[ 78119], 60.00th=[ 78119], | 70.00th=[517997], 80.00th=[517997], 90.00th=[624952], 95.00th=[624952], | 99.00th=[624952], 99.50th=[624952], 99.90th=[624952], 99.95th=[624952], | 99.99th=[624952] bw ( KiB/s): min= 2031, max= 4047, per=100.00%, avg=2703.00, stdev=1163.94, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=519KiB/s (532kB/s)(7168KiB/13809msec); 0 zone resets clat (msec): min=339, max=8250, avg=1770.77, stdev=2897.16 lat (msec): min=339, max=8250, avg=1771.26, stdev=2896.98 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 405], | 30.00th=[ 414], 40.00th=[ 414], 50.00th=[ 550], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 1720], 90.00th=[ 8221], 95.00th=[ 8221], | 99.00th=[ 8221], 99.50th=[ 8221], 99.90th=[ 8221], 99.95th=[ 8221], | 99.99th=[ 8221] bw ( KiB/s): min= 1643, max= 2043, per=100.00%, avg=1930.40, stdev=166.03, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 100=8.33%, 500=25.00%, 750=33.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.04%, sys=6.15%, ctx=325, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1354KiB/s (1387kB/s), 145KiB/s-474KiB/s (149kB/s-485kB/s), io=20.0MiB (20.0MB), run=13408-15121msec WRITE: bw=1896KiB/s (1942kB/s), 339KiB/s-726KiB/s (347kB/s-744kB/s), io=28.0MiB (29.4MB), run=13408-15121msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146874: Thu Jun 18 19:17:59 2026 read: IOPS=0, BW=446KiB/s (456kB/s)(7168KiB/16086msec) clat (msec): min=193, max=7009, avg=1826.72, stdev=2494.05 lat (msec): min=193, max=7009, avg=1826.72, stdev=2494.05 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 207], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 384], 60.00th=[ 2039], | 70.00th=[ 2039], 80.00th=[ 2668], 90.00th=[ 7013], 95.00th=[ 7013], | 99.00th=[ 7013], 99.50th=[ 7013], 99.90th=[ 7013], 99.95th=[ 7013], | 99.99th=[ 7013] bw ( KiB/s): min= 1838, max= 4079, per=100.00%, avg=2369.60, stdev=958.08, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=318KiB/s (326kB/s)(5120KiB/16086msec); 0 zone resets clat (msec): min=320, max=1412, avg=610.65, stdev=459.43 lat (msec): min=320, max=1413, avg=610.77, stdev=459.43 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 401], 60.00th=[ 401], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 1620, max= 2043, per=100.00%, avg=1911.75, stdev=197.61, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=16.67%, 500=41.67%, 750=8.33%, 2000=8.33%, >=2000=25.00% cpu : usr=0.00%, sys=2.05%, ctx=102, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146875: Thu Jun 18 19:17:59 2026 read: IOPS=0, BW=136KiB/s (139kB/s)(2048KiB/15087msec) clat (msec): min=224, max=309, avg=267.22, stdev=60.35 lat (msec): min=224, max=309, avg=267.22, stdev=60.35 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 226], 50.00th=[ 226], 60.00th=[ 309], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 309], 95.00th=[ 309], | 99.00th=[ 309], 99.50th=[ 309], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 2043, max= 2043, per=100.00%, avg=2043.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=0, BW=679KiB/s (695kB/s)(10.0MiB/15087msec); 0 zone resets clat (msec): min=456, max=7002, avg=1429.45, stdev=2051.38 lat (msec): min=459, max=7002, avg=1430.10, stdev=2051.14 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 477], | 30.00th=[ 481], 40.00th=[ 550], 50.00th=[ 625], 60.00th=[ 634], | 70.00th=[ 676], 80.00th=[ 894], 90.00th=[ 2500], 95.00th=[ 7013], | 99.00th=[ 7013], 99.50th=[ 7013], 99.90th=[ 7013], 99.95th=[ 7013], | 99.99th=[ 7013] bw ( KiB/s): min= 2000, max= 2048, per=100.00%, avg=2029.89, stdev=15.78, samples=9 iops : min= 1, max= 2, avg= 1.11, stdev= 0.33, samples=9 lat (msec) : 250=8.33%, 500=33.33%, 750=33.33%, 1000=8.33%, >=2000=16.67% cpu : usr=0.00%, sys=2.90%, ctx=132, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146876: Thu Jun 18 19:17:59 2026 read: IOPS=0, BW=400KiB/s (409kB/s)(6144KiB/15375msec) clat (msec): min=239, max=586, avg=328.37, stdev=131.03 lat (msec): min=239, max=586, avg=328.38, stdev=131.03 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 241], 10.00th=[ 241], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 309], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 2000, max= 4039, per=100.00%, avg=2527.25, stdev=1007.99, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=400KiB/s (409kB/s)(6144KiB/15375msec); 0 zone resets clat (msec): min=534, max=7388, avg=2180.76, stdev=2682.92 lat (msec): min=534, max=7388, avg=2180.90, stdev=2683.00 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 535], 10.00th=[ 535], 20.00th=[ 575], | 30.00th=[ 575], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 1234], | 70.00th=[ 2735], 80.00th=[ 2735], 90.00th=[ 7416], 95.00th=[ 7416], | 99.00th=[ 7416], 99.50th=[ 7416], 99.90th=[ 7416], 99.95th=[ 7416], | 99.99th=[ 7416] bw ( KiB/s): min= 1560, max= 2048, per=100.00%, avg=1956.67, stdev=194.56, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 250=16.67%, 500=25.00%, 750=33.33%, 2000=8.33%, >=2000=16.67% cpu : usr=0.00%, sys=1.95%, ctx=104, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146877: Thu Jun 18 19:17:59 2026 read: IOPS=0, BW=338KiB/s (346kB/s)(5120KiB/15131msec) clat (msec): min=184, max=998, avg=412.83, stdev=331.60 lat (msec): min=184, max=998, avg=412.83, stdev=331.60 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 262], 40.00th=[ 262], 50.00th=[ 300], 60.00th=[ 300], | 70.00th=[ 321], 80.00th=[ 321], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 2035, max= 3992, per=100.00%, avg=2688.67, stdev=1128.72, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=474KiB/s (485kB/s)(7168KiB/15131msec); 0 zone resets clat (msec): min=429, max=7167, avg=1856.03, stdev=2479.73 lat (msec): min=429, max=7167, avg=1856.18, stdev=2479.69 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 489], | 30.00th=[ 642], 40.00th=[ 642], 50.00th=[ 667], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 2769], 90.00th=[ 7148], 95.00th=[ 7148], | 99.00th=[ 7148], 99.50th=[ 7148], 99.90th=[ 7148], 99.95th=[ 7148], | 99.99th=[ 7148] bw ( KiB/s): min= 2019, max= 2048, per=100.00%, avg=2032.50, stdev=10.62, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 250=8.33%, 500=41.67%, 750=16.67%, 1000=16.67%, >=2000=16.67% cpu : usr=0.00%, sys=1.65%, ctx=116, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1273KiB/s (1304kB/s), 136KiB/s-446KiB/s (139kB/s-456kB/s), io=20.0MiB (20.0MB), run=15087-16086msec WRITE: bw=1782KiB/s (1825kB/s), 318KiB/s-679KiB/s (326kB/s-695kB/s), io=28.0MiB (29.4MB), run=15087-16086msec mix direct rw 4194304 by fio with 4 jobs... mix buffer rw 4194304 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096KiB-4096KiB, (W) 4096KiB-4096KiB, (T) 4096KiB-4096KiB, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=146888: Thu Jun 18 19:18:33 2026 read: IOPS=0, BW=1824KiB/s (1867kB/s)(12.0MiB/6738msec) clat (msec): min=1578, max=2698, avg=2095.96, stdev=565.15 lat (msec): min=1578, max=2698, avg=2095.96, stdev=565.15 clat percentiles (msec): | 1.00th=[ 1586], 5.00th=[ 1586], 10.00th=[ 1586], 20.00th=[ 1586], | 30.00th=[ 1586], 40.00th=[ 2005], 50.00th=[ 2005], 60.00th=[ 2005], | 70.00th=[ 2702], 80.00th=[ 2702], 90.00th=[ 2702], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 8000, max= 8143, per=100.00%, avg=8071.50, stdev=101.12, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=6.59%, ctx=465, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146889: Thu Jun 18 19:18:33 2026 read: IOPS=0, BW=483KiB/s (495kB/s)(4096KiB/8475msec) clat (nsec): min=1995.7M, max=1995.7M, avg=1995717695.00, stdev= 0.00 lat (nsec): min=1995.7M, max=1995.7M, avg=1995721156.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1989], 5.00th=[ 1989], 10.00th=[ 1989], 20.00th=[ 1989], | 30.00th=[ 1989], 40.00th=[ 1989], 50.00th=[ 1989], 60.00th=[ 1989], | 70.00th=[ 1989], 80.00th=[ 1989], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=967KiB/s (990kB/s)(8192KiB/8475msec); 0 zone resets clat (msec): min=1649, max=4712, avg=3181.13, stdev=2165.43 lat (msec): min=1650, max=4712, avg=3181.55, stdev=2165.12 clat percentiles (msec): | 1.00th=[ 1653], 5.00th=[ 1653], 10.00th=[ 1653], 20.00th=[ 1653], | 30.00th=[ 1653], 40.00th=[ 1653], 50.00th=[ 1653], 60.00th=[ 4732], | 70.00th=[ 4732], 80.00th=[ 4732], 90.00th=[ 4732], 95.00th=[ 4732], | 99.00th=[ 4732], 99.50th=[ 4732], 99.90th=[ 4732], 99.95th=[ 4732], | 99.99th=[ 4732] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.99%, ctx=253, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146890: Thu Jun 18 19:18:33 2026 write: IOPS=0, BW=1451KiB/s (1486kB/s)(12.0MiB/8467msec); 0 zone resets clat (msec): min=1000, max=4286, avg=2696.28, stdev=1645.60 lat (msec): min=1000, max=4287, avg=2696.93, stdev=1645.90 clat percentiles (msec): | 1.00th=[ 1003], 5.00th=[ 1003], 10.00th=[ 1003], 20.00th=[ 1003], | 30.00th=[ 1003], 40.00th=[ 2802], 50.00th=[ 2802], 60.00th=[ 2802], | 70.00th=[ 4279], 80.00th=[ 4279], 90.00th=[ 4279], 95.00th=[ 4279], | 99.00th=[ 4279], 99.50th=[ 4279], 99.90th=[ 4279], 99.95th=[ 4279], | 99.99th=[ 4279] bw ( KiB/s): min= 8000, max= 8175, per=100.00%, avg=8087.50, stdev=123.74, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=3.52%, ctx=87, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146891: Thu Jun 18 19:18:33 2026 write: IOPS=0, BW=1550KiB/s (1587kB/s)(12.0MiB/7928msec); 0 zone resets clat (msec): min=1718, max=3259, avg=2513.33, stdev=771.50 lat (msec): min=1720, max=3259, avg=2516.72, stdev=770.70 clat percentiles (msec): | 1.00th=[ 1720], 5.00th=[ 1720], 10.00th=[ 1720], 20.00th=[ 1720], | 30.00th=[ 1720], 40.00th=[ 2567], 50.00th=[ 2567], 60.00th=[ 2567], | 70.00th=[ 3272], 80.00th=[ 3272], 90.00th=[ 3272], 95.00th=[ 3272], | 99.00th=[ 3272], 99.50th=[ 3272], 99.90th=[ 3272], 99.95th=[ 3272], | 99.99th=[ 3272] bw ( KiB/s): min= 8031, max= 8192, per=100.00%, avg=8111.50, stdev=113.84, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.14%, sys=3.78%, ctx=93, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1933KiB/s (1980kB/s), 483KiB/s-1824KiB/s (495kB/s-1867kB/s), io=16.0MiB (16.8MB), run=6738-8475msec WRITE: bw=3866KiB/s (3959kB/s), 967KiB/s-1550KiB/s (990kB/s-1587kB/s), io=32.0MiB (33.6MB), run=7928-8475msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146892: Thu Jun 18 19:18:34 2026 read: IOPS=0, BW=1733KiB/s (1775kB/s)(12.0MiB/7090msec) clat (msec): min=1970, max=2850, avg=2311.76, stdev=472.11 lat (msec): min=1970, max=2850, avg=2311.77, stdev=472.11 clat percentiles (msec): | 1.00th=[ 1972], 5.00th=[ 1972], 10.00th=[ 1972], 20.00th=[ 1972], | 30.00th=[ 1972], 40.00th=[ 2123], 50.00th=[ 2123], 60.00th=[ 2123], | 70.00th=[ 2836], 80.00th=[ 2836], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 8094, max= 8110, per=100.00%, avg=8102.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.89%, ctx=66, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146893: Thu Jun 18 19:18:34 2026 read: IOPS=0, BW=427KiB/s (438kB/s)(4096KiB/9582msec) clat (nsec): min=3170.9M, max=3170.9M, avg=3170922702.00, stdev= 0.00 lat (nsec): min=3170.9M, max=3170.9M, avg=3170926592.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3171], 5.00th=[ 3171], 10.00th=[ 3171], 20.00th=[ 3171], | 30.00th=[ 3171], 40.00th=[ 3171], 50.00th=[ 3171], 60.00th=[ 3171], | 70.00th=[ 3171], 80.00th=[ 3171], 90.00th=[ 3171], 95.00th=[ 3171], | 99.00th=[ 3171], 99.50th=[ 3171], 99.90th=[ 3171], 99.95th=[ 3171], | 99.99th=[ 3171] bw ( KiB/s): min= 8047, max= 8047, per=100.00%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=855KiB/s (875kB/s)(8192KiB/9582msec); 0 zone resets clat (msec): min=2532, max=3600, avg=3066.13, stdev=755.30 lat (msec): min=2532, max=3600, avg=3066.60, stdev=755.41 clat percentiles (msec): | 1.00th=[ 2534], 5.00th=[ 2534], 10.00th=[ 2534], 20.00th=[ 2534], | 30.00th=[ 2534], 40.00th=[ 2534], 50.00th=[ 2534], 60.00th=[ 3608], | 70.00th=[ 3608], 80.00th=[ 3608], 90.00th=[ 3608], 95.00th=[ 3608], | 99.00th=[ 3608], 99.50th=[ 3608], 99.90th=[ 3608], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 7111, max= 7111, per=100.00%, avg=7111.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : >=2000=100.00% cpu : usr=0.00%, sys=2.23%, ctx=66, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146894: Thu Jun 18 19:18:34 2026 write: IOPS=0, BW=1262KiB/s (1292kB/s)(12.0MiB/9738msec); 0 zone resets clat (msec): min=790, max=5927, avg=3204.48, stdev=2582.13 lat (msec): min=791, max=5931, avg=3206.83, stdev=2583.87 clat percentiles (msec): | 1.00th=[ 793], 5.00th=[ 793], 10.00th=[ 793], 20.00th=[ 793], | 30.00th=[ 793], 40.00th=[ 2903], 50.00th=[ 2903], 60.00th=[ 2903], | 70.00th=[ 5940], 80.00th=[ 5940], 90.00th=[ 5940], 95.00th=[ 5940], | 99.00th=[ 5940], 99.50th=[ 5940], 99.90th=[ 5940], 99.95th=[ 5940], | 99.99th=[ 5940] bw ( KiB/s): min= 7098, max= 8175, per=100.00%, avg=7636.50, stdev=761.55, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=2.46%, ctx=88, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146895: Thu Jun 18 19:18:34 2026 write: IOPS=0, BW=1741KiB/s (1782kB/s)(12.0MiB/7060msec); 0 zone resets clat (msec): min=860, max=4396, avg=2299.49, stdev=1857.85 lat (msec): min=860, max=4397, avg=2300.49, stdev=1857.53 clat percentiles (msec): | 1.00th=[ 860], 5.00th=[ 860], 10.00th=[ 860], 20.00th=[ 860], | 30.00th=[ 860], 40.00th=[ 1636], 50.00th=[ 1636], 60.00th=[ 1636], | 70.00th=[ 4396], 80.00th=[ 4396], 90.00th=[ 4396], 95.00th=[ 4396], | 99.00th=[ 4396], 99.50th=[ 4396], 99.90th=[ 4396], 99.95th=[ 4396], | 99.99th=[ 4396] bw ( KiB/s): min= 8110, max= 8159, per=100.00%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.95%, ctx=83, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1710KiB/s (1751kB/s), 427KiB/s-1733KiB/s (438kB/s-1775kB/s), io=16.0MiB (16.8MB), run=7090-9582msec WRITE: bw=3365KiB/s (3446kB/s), 855KiB/s-1741KiB/s (875kB/s-1782kB/s), io=32.0MiB (33.6MB), run=7060-9738msec