== sanity test 398b: DIO and buffer IO race ============== 18:26:18 (1786832778) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.75713 s, 8.7 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=146041: Sat Aug 15 18:28:56 2026 read: IOPS=10, BW=42.9KiB/s (43.9kB/s)(5992KiB/139739msec) clat (usec): min=34, max=1530.0k, avg=47574.98, stdev=54464.45 lat (usec): min=34, max=1530.0k, avg=47583.26, stdev=54462.26 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 58], 10.00th=[ 11076], | 20.00th=[ 20579], 30.00th=[ 26084], 40.00th=[ 32113], | 50.00th=[ 39060], 60.00th=[ 46400], 70.00th=[ 55837], | 80.00th=[ 67634], 90.00th=[ 87557], 95.00th=[ 110625], | 99.00th=[ 191890], 99.50th=[ 240124], 99.90th=[ 480248], | 99.95th=[1535116], 99.99th=[1535116] bw ( KiB/s): min= 7, max= 119, per=25.03%, avg=42.80, stdev=19.59, samples=273 iops : min= 1, max= 29, avg=10.05, stdev= 4.94, samples=273 write: IOPS=11, BW=45.1KiB/s (46.1kB/s)(6296KiB/139739msec); 0 zone resets clat (usec): min=1090, max=320916, avg=43138.54, stdev=43281.03 lat (usec): min=1091, max=320918, avg=43143.85, stdev=43280.22 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1385], 10.00th=[ 2057], 20.00th=[ 4621], | 30.00th=[ 10814], 40.00th=[ 19792], 50.00th=[ 30802], 60.00th=[ 44303], | 70.00th=[ 57410], 80.00th=[ 73925], 90.00th=[102237], 95.00th=[128451], | 99.00th=[183501], 99.50th=[204473], 99.90th=[291505], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 7, max= 159, per=25.12%, avg=44.96, stdev=22.40, samples=273 iops : min= 1, max= 39, avg=10.59, stdev= 5.61, samples=273 lat (usec) : 50=0.81%, 100=3.19%, 250=0.13%, 500=0.07% lat (msec) : 2=5.08%, 4=4.39%, 10=6.02%, 20=10.16%, 50=34.96% lat (msec) : 100=26.43%, 250=8.50%, 500=0.23%, 2000=0.03% cpu : usr=0.06%, sys=4.83%, ctx=6583, 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=146042: Sat Aug 15 18:28:56 2026 read: IOPS=10, BW=42.6KiB/s (43.7kB/s)(5940KiB/139315msec) clat (usec): min=26, max=416461, avg=45097.11, stdev=36353.69 lat (usec): min=26, max=416462, avg=45101.01, stdev=36353.83 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 11207], 20.00th=[ 20317], | 30.00th=[ 25560], 40.00th=[ 31851], 50.00th=[ 37487], 60.00th=[ 44827], | 70.00th=[ 55313], 80.00th=[ 66847], 90.00th=[ 85459], 95.00th=[103285], | 99.00th=[164627], 99.50th=[206570], 99.90th=[413139], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 7, max= 127, per=24.87%, avg=42.53, stdev=20.73, samples=272 iops : min= 1, max= 31, avg= 9.99, stdev= 5.22, samples=272 write: IOPS=11, BW=45.6KiB/s (46.7kB/s)(6348KiB/139315msec); 0 zone resets clat (usec): min=1101, max=1443.6k, avg=45184.54, stdev=56252.19 lat (usec): min=1104, max=1443.6k, avg=45188.24, stdev=56251.11 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1385], 10.00th=[ 2311], | 20.00th=[ 5604], 30.00th=[ 11731], 40.00th=[ 22676], | 50.00th=[ 33424], 60.00th=[ 45351], 70.00th=[ 58983], | 80.00th=[ 74974], 90.00th=[ 102237], 95.00th=[ 126354], | 99.00th=[ 200279], 99.50th=[ 217056], 99.90th=[ 421528], | 99.95th=[1451230], 99.99th=[1451230] bw ( KiB/s): min= 7, max= 175, per=25.28%, avg=45.26, stdev=22.32, samples=273 iops : min= 1, max= 43, avg=10.67, stdev= 5.61, samples=273 lat (usec) : 50=0.52%, 100=3.09%, 250=0.26%, 500=0.10% lat (msec) : 2=4.72%, 4=3.71%, 10=6.64%, 20=9.99%, 50=35.84% lat (msec) : 100=26.82%, 250=7.98%, 500=0.29%, 2000=0.03% cpu : usr=0.06%, sys=4.60%, ctx=6548, 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=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=146043: Sat Aug 15 18:28:56 2026 read: IOPS=11, BW=44.1KiB/s (45.2kB/s)(6028KiB/136626msec) clat (usec): min=35, max=426111, avg=44287.86, stdev=34875.60 lat (usec): min=35, max=426112, avg=44292.68, stdev=34872.41 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 59], 10.00th=[ 233], 20.00th=[ 20579], | 30.00th=[ 26084], 40.00th=[ 31851], 50.00th=[ 38011], 60.00th=[ 44827], | 70.00th=[ 53216], 80.00th=[ 65274], 90.00th=[ 85459], 95.00th=[103285], | 99.00th=[154141], 99.50th=[191890], 99.90th=[375391], 99.95th=[425722], | 99.99th=[425722] bw ( KiB/s): min= 7, max= 109, per=25.74%, avg=44.02, stdev=19.94, samples=266 iops : min= 1, max= 27, avg=10.36, stdev= 5.02, samples=266 write: IOPS=11, BW=45.8KiB/s (46.9kB/s)(6260KiB/136626msec); 0 zone resets clat (usec): min=1137, max=1428.5k, avg=44314.75, stdev=58760.51 lat (usec): min=1139, max=1428.5k, avg=44316.39, stdev=58760.49 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1336], 10.00th=[ 2057], | 20.00th=[ 5014], 30.00th=[ 8979], 40.00th=[ 18744], | 50.00th=[ 30278], 60.00th=[ 42730], 70.00th=[ 56361], | 80.00th=[ 73925], 90.00th=[ 102237], 95.00th=[ 132645], | 99.00th=[ 229639], 99.50th=[ 246416], 99.90th=[ 505414], | 99.95th=[1434452], 99.99th=[1434452] bw ( KiB/s): min= 7, max= 103, per=25.37%, avg=45.42, stdev=18.81, samples=267 iops : min= 1, max= 25, avg=10.72, stdev= 4.74, samples=267 lat (usec) : 50=0.68%, 100=3.94%, 250=0.29%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=5.01%, 4=3.84%, 10=7.65%, 20=8.72%, 50=36.10% lat (msec) : 100=25.26%, 250=7.98%, 500=0.29%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=4.66%, ctx=6451, 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=146044: Sat Aug 15 18:28:56 2026 read: IOPS=10, BW=43.8KiB/s (44.9kB/s)(6052KiB/138140msec) clat (usec): min=33, max=377896, avg=44006.92, stdev=33733.34 lat (usec): min=33, max=377898, avg=44011.21, stdev=33732.93 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 59], 10.00th=[ 469], 20.00th=[ 19530], | 30.00th=[ 25297], 40.00th=[ 31327], 50.00th=[ 37487], 60.00th=[ 45351], | 70.00th=[ 53740], 80.00th=[ 65274], 90.00th=[ 85459], 95.00th=[102237], | 99.00th=[145753], 99.50th=[175113], 99.90th=[350225], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 7, max= 135, per=25.53%, avg=43.66, stdev=20.21, samples=269 iops : min= 1, max= 33, avg=10.27, stdev= 5.08, samples=269 write: IOPS=11, BW=45.1KiB/s (46.2kB/s)(6236KiB/138140msec); 0 zone resets clat (usec): min=1138, max=1389.5k, avg=45517.08, stdev=58030.07 lat (usec): min=1139, max=1389.5k, avg=45524.32, stdev=58032.56 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1401], 10.00th=[ 2376], | 20.00th=[ 5735], 30.00th=[ 11469], 40.00th=[ 22152], | 50.00th=[ 32113], 60.00th=[ 43779], 70.00th=[ 56886], | 80.00th=[ 74974], 90.00th=[ 100140], 95.00th=[ 130548], | 99.00th=[ 210764], 99.50th=[ 270533], 99.90th=[ 467665], | 99.95th=[1384121], 99.99th=[1384121] bw ( KiB/s): min= 7, max= 95, per=25.22%, avg=45.14, stdev=18.99, samples=268 iops : min= 1, max= 23, avg=10.64, stdev= 4.79, samples=268 lat (usec) : 50=0.75%, 100=3.68%, 250=0.46%, 500=0.07%, 750=0.03% lat (msec) : 2=4.30%, 4=3.42%, 10=6.97%, 20=9.73%, 50=35.45% lat (msec) : 100=27.31%, 250=7.45%, 500=0.36%, 2000=0.03% cpu : usr=0.08%, sys=4.65%, ctx=6542, 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=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=172KiB/s (176kB/s), 42.6KiB/s-44.1KiB/s (43.7kB/s-45.2kB/s), io=23.4MiB (24.6MB), run=136626-139739msec WRITE: bw=180KiB/s (184kB/s), 45.1KiB/s-45.8KiB/s (46.1kB/s-46.9kB/s), io=24.6MiB (25.7MB), run=136626-139739msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146046: Sat Aug 15 18:31:21 2026 read: IOPS=5, BW=21.2KiB/s (21.7kB/s)(5992KiB/283243msec) clat (msec): min=5, max=1564, avg=36.81, stdev=57.26 lat (msec): min=5, max=1564, avg=36.81, stdev=57.26 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 48], 90.00th=[ 80], 95.00th=[ 112], | 99.00th=[ 220], 99.50th=[ 317], 99.90th=[ 426], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 7, max= 87, per=29.00%, avg=24.36, stdev=16.70, samples=474 iops : min= 1, max= 21, avg= 5.45, stdev= 4.22, samples=474 write: IOPS=5, BW=22.2KiB/s (22.8kB/s)(6296KiB/283243msec); 0 zone resets clat (msec): min=31, max=547, avg=144.83, stdev=72.49 lat (msec): min=31, max=547, avg=144.84, stdev=72.48 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 71], 20.00th=[ 86], | 30.00th=[ 100], 40.00th=[ 113], 50.00th=[ 128], 60.00th=[ 144], | 70.00th=[ 167], 80.00th=[ 194], 90.00th=[ 241], 95.00th=[ 296], | 99.00th=[ 380], 99.50th=[ 418], 99.90th=[ 518], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 7, max= 56, per=24.97%, avg=21.97, stdev=10.45, samples=550 iops : min= 1, max= 14, avg= 4.85, stdev= 2.66, samples=550 lat (msec) : 10=3.87%, 20=18.29%, 50=17.94%, 100=21.48%, 250=33.43% lat (msec) : 500=4.85%, 750=0.10%, 2000=0.03% cpu : usr=0.03%, sys=1.17%, ctx=5117, 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=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=146047: Sat Aug 15 18:31:21 2026 read: IOPS=5, BW=20.9KiB/s (21.4kB/s)(5940KiB/284475msec) clat (msec): min=6, max=1563, avg=35.43, stdev=54.11 lat (msec): min=6, max=1563, avg=35.44, stdev=54.11 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 46], 90.00th=[ 75], 95.00th=[ 108], | 99.00th=[ 182], 99.50th=[ 224], 99.90th=[ 393], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 7, max= 95, per=29.08%, avg=24.43, stdev=16.77, samples=468 iops : min= 1, max= 23, avg= 5.46, stdev= 4.23, samples=468 write: IOPS=5, BW=22.3KiB/s (22.8kB/s)(6348KiB/284475msec); 0 zone resets clat (msec): min=39, max=655, avg=145.99, stdev=72.50 lat (msec): min=39, max=655, avg=145.99, stdev=72.50 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 87], | 30.00th=[ 100], 40.00th=[ 113], 50.00th=[ 129], 60.00th=[ 146], | 70.00th=[ 167], 80.00th=[ 197], 90.00th=[ 249], 95.00th=[ 284], | 99.00th=[ 368], 99.50th=[ 447], 99.90th=[ 550], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7, max= 47, per=25.05%, avg=22.04, stdev=10.17, samples=551 iops : min= 1, max= 11, avg= 4.86, stdev= 2.58, samples=551 lat (msec) : 10=3.97%, 20=17.97%, 50=18.29%, 100=21.06%, 250=33.50% lat (msec) : 500=5.05%, 750=0.13%, 2000=0.03% cpu : usr=0.04%, sys=1.20%, ctx=5134, 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=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=146048: Sat Aug 15 18:31:21 2026 read: IOPS=5, BW=21.2KiB/s (21.7kB/s)(6028KiB/283804msec) clat (msec): min=5, max=446, avg=37.18, stdev=40.90 lat (msec): min=5, max=446, avg=37.18, stdev=40.89 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 51], 90.00th=[ 84], 95.00th=[ 122], | 99.00th=[ 207], 99.50th=[ 241], 99.90th=[ 418], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 95, per=28.13%, avg=23.63, stdev=16.27, samples=491 iops : min= 1, max= 23, avg= 5.27, stdev= 4.11, samples=491 write: IOPS=5, BW=22.1KiB/s (22.6kB/s)(6260KiB/283804msec); 0 zone resets clat (msec): min=32, max=1857, avg=145.45, stdev=85.06 lat (msec): min=32, max=1857, avg=145.45, stdev=85.06 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 64], 10.00th=[ 73], 20.00th=[ 88], | 30.00th=[ 101], 40.00th=[ 112], 50.00th=[ 125], 60.00th=[ 140], | 70.00th=[ 163], 80.00th=[ 192], 90.00th=[ 245], 95.00th=[ 296], | 99.00th=[ 405], 99.50th=[ 435], 99.90th=[ 550], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 56, per=24.98%, avg=21.98, stdev=10.61, samples=546 iops : min= 1, max= 14, avg= 4.85, stdev= 2.71, samples=546 lat (msec) : 10=2.99%, 20=18.49%, 50=18.20%, 100=21.06%, 250=34.47% lat (msec) : 500=4.69%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.14%, ctx=5147, 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=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=146049: Sat Aug 15 18:31:21 2026 read: IOPS=5, BW=21.4KiB/s (21.9kB/s)(6052KiB/283114msec) clat (msec): min=5, max=435, avg=36.56, stdev=43.44 lat (msec): min=5, max=435, avg=36.56, stdev=43.44 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 35], 80.00th=[ 48], 90.00th=[ 84], 95.00th=[ 115], | 99.00th=[ 213], 99.50th=[ 279], 99.90th=[ 430], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 7, max= 103, per=29.13%, avg=24.47, stdev=17.84, samples=477 iops : min= 1, max= 25, avg= 5.48, stdev= 4.49, samples=477 write: IOPS=5, BW=22.0KiB/s (22.6kB/s)(6236KiB/283114msec); 0 zone resets clat (msec): min=39, max=1644, avg=146.03, stdev=78.24 lat (msec): min=39, max=1644, avg=146.03, stdev=78.24 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 66], 10.00th=[ 75], 20.00th=[ 89], | 30.00th=[ 103], 40.00th=[ 115], 50.00th=[ 130], 60.00th=[ 146], | 70.00th=[ 167], 80.00th=[ 194], 90.00th=[ 239], 95.00th=[ 279], | 99.00th=[ 376], 99.50th=[ 435], 99.90th=[ 550], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 7, max= 56, per=24.83%, avg=21.85, stdev=10.07, samples=548 iops : min= 1, max= 14, avg= 4.82, stdev= 2.57, samples=548 lat (msec) : 10=4.17%, 20=18.68%, 50=17.38%, 100=20.35%, 250=35.12% lat (msec) : 500=4.23%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.17%, ctx=5051, 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=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=84.4KiB/s (86.4kB/s), 20.9KiB/s-21.4KiB/s (21.4kB/s-21.9kB/s), io=23.4MiB (24.6MB), run=283114-284475msec WRITE: bw=88.4KiB/s (90.5kB/s), 22.0KiB/s-22.3KiB/s (22.6kB/s-22.8kB/s), io=24.6MiB (25.7MB), run=283114-284475msec 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=146106: Sat Aug 15 18:31:54 2026 read: IOPS=16, BW=258KiB/s (264kB/s)(5920KiB/22983msec) clat (usec): min=34, max=159904, avg=30630.75, stdev=27613.25 lat (usec): min=34, max=159905, avg=30631.87, stdev=27613.29 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 83], | 30.00th=[ 16319], 40.00th=[ 22938], 50.00th=[ 27919], 60.00th=[ 34341], | 70.00th=[ 39584], 80.00th=[ 48497], 90.00th=[ 60031], 95.00th=[ 79168], | 99.00th=[139461], 99.50th=[147850], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 95, max= 477, per=24.80%, avg=257.69, stdev=88.01, samples=45 iops : min= 5, max= 29, avg=15.36, stdev= 5.55, samples=45 write: IOPS=17, BW=277KiB/s (284kB/s)(6368KiB/22983msec); 0 zone resets clat (usec): min=1461, max=158413, avg=29052.36, stdev=29556.10 lat (usec): min=1463, max=158415, avg=29055.11, stdev=29555.91 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2442], 10.00th=[ 3425], 20.00th=[ 5276], | 30.00th=[ 7570], 40.00th=[ 11994], 50.00th=[ 18482], 60.00th=[ 26346], | 70.00th=[ 36439], 80.00th=[ 47973], 90.00th=[ 73925], 95.00th=[ 93848], | 99.00th=[126354], 99.50th=[132645], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 63, max= 478, per=25.27%, avg=276.49, stdev=85.71, samples=45 iops : min= 3, max= 29, avg=16.56, stdev= 5.43, samples=45 lat (usec) : 50=1.30%, 100=9.38%, 250=1.04%, 500=0.39%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.21%, 4=4.17%, 10=12.37%, 20=12.24%, 50=38.28% lat (msec) : 100=14.84%, 250=3.52% cpu : usr=0.09%, sys=6.77%, ctx=1526, 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=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=146107: Sat Aug 15 18:31:54 2026 read: IOPS=15, BW=249KiB/s (255kB/s)(5744KiB/23032msec) clat (usec): min=37, max=190983, avg=31761.31, stdev=27809.49 lat (usec): min=38, max=190984, avg=31762.36, stdev=27809.51 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 60], 20.00th=[ 151], | 30.00th=[ 18220], 40.00th=[ 23200], 50.00th=[ 28705], 60.00th=[ 34341], | 70.00th=[ 42206], 80.00th=[ 50594], 90.00th=[ 64750], 95.00th=[ 73925], | 99.00th=[137364], 99.50th=[183501], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 63, max= 415, per=24.07%, avg=250.04, stdev=89.42, samples=45 iops : min= 3, max= 25, avg=14.87, stdev= 5.67, samples=45 write: IOPS=17, BW=284KiB/s (291kB/s)(6544KiB/23032msec); 0 zone resets clat (usec): min=1586, max=212518, avg=28066.93, stdev=29389.72 lat (usec): min=1588, max=212521, avg=28069.09, stdev=29389.82 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2212], 10.00th=[ 2868], 20.00th=[ 4228], | 30.00th=[ 7701], 40.00th=[ 10290], 50.00th=[ 16909], 60.00th=[ 25297], | 70.00th=[ 36963], 80.00th=[ 50070], 90.00th=[ 66847], 95.00th=[ 87557], | 99.00th=[124257], 99.50th=[147850], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 63, max= 606, per=25.92%, avg=283.56, stdev=115.11, samples=45 iops : min= 3, max= 37, avg=16.98, stdev= 7.23, samples=45 lat (usec) : 50=1.43%, 100=7.55%, 250=0.78%, 750=0.13%, 1000=0.13% lat (msec) : 2=2.08%, 4=7.68%, 10=11.72%, 20=12.37%, 50=35.81% lat (msec) : 100=18.23%, 250=2.08% cpu : usr=0.08%, sys=6.87%, ctx=1523, 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=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=146108: Sat Aug 15 18:31:54 2026 read: IOPS=17, BW=279KiB/s (286kB/s)(6256KiB/22414msec) clat (usec): min=37, max=231237, avg=30657.13, stdev=26157.36 lat (usec): min=37, max=231239, avg=30658.35, stdev=26157.52 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 57], 10.00th=[ 62], 20.00th=[ 87], | 30.00th=[ 19006], 40.00th=[ 24249], 50.00th=[ 29492], 60.00th=[ 33424], | 70.00th=[ 40633], 80.00th=[ 48497], 90.00th=[ 58983], 95.00th=[ 70779], | 99.00th=[115868], 99.50th=[154141], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 95, max= 469, per=27.08%, avg=281.37, stdev=91.32, samples=43 iops : min= 5, max= 29, avg=16.84, stdev= 5.79, samples=43 write: IOPS=16, BW=269KiB/s (276kB/s)(6032KiB/22414msec); 0 zone resets clat (usec): min=1570, max=242714, avg=27079.40, stdev=29027.62 lat (usec): min=1572, max=242717, avg=27084.86, stdev=29030.04 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 1893], 10.00th=[ 2802], 20.00th=[ 4817], | 30.00th=[ 7177], 40.00th=[ 9372], 50.00th=[ 14746], 60.00th=[ 23987], | 70.00th=[ 35390], 80.00th=[ 48497], 90.00th=[ 68682], 95.00th=[ 81265], | 99.00th=[110625], 99.50th=[166724], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 125, max= 447, per=24.49%, avg=267.91, stdev=82.40, samples=43 iops : min= 7, max= 27, avg=16.00, stdev= 5.15, samples=43 lat (usec) : 50=1.30%, 100=9.38%, 250=0.39%, 500=0.39%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=3.26%, 4=5.08%, 10=12.50%, 20=10.68%, 50=38.67% lat (msec) : 100=16.28%, 250=1.69% cpu : usr=0.08%, sys=7.22%, ctx=1490, 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=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=146109: Sat Aug 15 18:31:54 2026 read: IOPS=17, BW=281KiB/s (288kB/s)(6032KiB/21454msec) clat (usec): min=37, max=217177, avg=30832.69, stdev=27948.25 lat (usec): min=37, max=217179, avg=30834.64, stdev=27947.53 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 55], 10.00th=[ 59], 20.00th=[ 75], | 30.00th=[ 16188], 40.00th=[ 23725], 50.00th=[ 29230], 60.00th=[ 34341], | 70.00th=[ 41157], 80.00th=[ 49546], 90.00th=[ 64750], 95.00th=[ 71828], | 99.00th=[115868], 99.50th=[183501], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 127, max= 670, per=26.90%, avg=279.52, stdev=101.93, samples=42 iops : min= 7, max= 41, avg=16.74, stdev= 6.34, samples=42 write: IOPS=18, BW=292KiB/s (299kB/s)(6256KiB/21454msec); 0 zone resets clat (usec): min=1343, max=155313, avg=24637.47, stdev=27025.69 lat (usec): min=1345, max=155317, avg=24650.01, stdev=27030.58 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2024], 10.00th=[ 2573], 20.00th=[ 4490], | 30.00th=[ 5800], 40.00th=[ 8094], 50.00th=[ 12125], 60.00th=[ 20055], | 70.00th=[ 30540], 80.00th=[ 45876], 90.00th=[ 62653], 95.00th=[ 74974], | 99.00th=[141558], 99.50th=[149947], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 93, max= 534, per=26.67%, avg=291.79, stdev=104.51, samples=42 iops : min= 5, max= 33, avg=17.50, stdev= 6.60, samples=42 lat (usec) : 50=2.08%, 100=8.72%, 250=1.69%, 500=0.52% lat (msec) : 2=2.34%, 4=6.25%, 10=15.49%, 20=9.90%, 50=34.51% lat (msec) : 100=17.06%, 250=1.43% cpu : usr=0.09%, sys=7.06%, ctx=1444, 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=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=1040KiB/s (1065kB/s), 249KiB/s-281KiB/s (255kB/s-288kB/s), io=23.4MiB (24.5MB), run=21454-23032msec WRITE: bw=1094KiB/s (1120kB/s), 269KiB/s-292KiB/s (276kB/s-299kB/s), io=24.6MiB (25.8MB), run=21454-23032msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146111: Sat Aug 15 18:32:35 2026 read: IOPS=5, BW=93.8KiB/s (96.0kB/s)(5920KiB/63146msec) clat (msec): min=6, max=271, avg=33.30, stdev=30.71 lat (msec): min=6, max=271, avg=33.31, stdev=30.71 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 29], | 70.00th=[ 33], 80.00th=[ 43], 90.00th=[ 64], 95.00th=[ 90], | 99.00th=[ 161], 99.50th=[ 218], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 31, max= 287, per=27.14%, avg=102.05, stdev=58.97, samples=114 iops : min= 1, max= 17, avg= 5.63, stdev= 3.68, samples=114 write: IOPS=6, BW=101KiB/s (103kB/s)(6368KiB/63146msec); 0 zone resets clat (msec): min=39, max=320, avg=127.47, stdev=48.78 lat (msec): min=39, max=320, avg=127.47, stdev=48.78 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 63], 10.00th=[ 73], 20.00th=[ 85], | 30.00th=[ 95], 40.00th=[ 108], 50.00th=[ 123], 60.00th=[ 134], | 70.00th=[ 150], 80.00th=[ 165], 90.00th=[ 192], 95.00th=[ 224], | 99.00th=[ 271], 99.50th=[ 317], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 31, max= 191, per=25.73%, avg=101.91, stdev=36.60, samples=123 iops : min= 1, max= 11, avg= 5.60, stdev= 2.35, samples=123 lat (msec) : 10=2.99%, 20=15.23%, 50=23.05%, 100=22.79%, 250=34.64% lat (msec) : 500=1.30% cpu : usr=0.04%, sys=1.49%, ctx=1307, 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=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=146112: Sat Aug 15 18:32:35 2026 read: IOPS=5, BW=90.4KiB/s (92.5kB/s)(5744KiB/63561msec) clat (msec): min=6, max=271, avg=33.88, stdev=32.07 lat (msec): min=6, max=271, avg=33.88, stdev=32.07 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 45], 90.00th=[ 66], 95.00th=[ 100], | 99.00th=[ 169], 99.50th=[ 222], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 28, max= 286, per=26.50%, avg=99.64, stdev=61.81, samples=114 iops : min= 1, max= 17, avg= 5.46, stdev= 3.92, samples=114 write: IOPS=6, BW=103KiB/s (105kB/s)(6544KiB/63561msec); 0 zone resets clat (msec): min=38, max=324, avg=125.49, stdev=49.22 lat (msec): min=38, max=324, avg=125.50, stdev=49.22 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 62], 10.00th=[ 72], 20.00th=[ 83], | 30.00th=[ 94], 40.00th=[ 105], 50.00th=[ 116], 60.00th=[ 133], | 70.00th=[ 148], 80.00th=[ 161], 90.00th=[ 184], 95.00th=[ 230], | 99.00th=[ 275], 99.50th=[ 288], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 223, per=25.87%, avg=102.44, stdev=41.95, samples=126 iops : min= 1, max= 13, avg= 5.63, stdev= 2.64, samples=126 lat (msec) : 10=3.12%, 20=14.84%, 50=21.88%, 100=23.83%, 250=35.03% lat (msec) : 500=1.30% cpu : usr=0.04%, sys=1.54%, ctx=1312, 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=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=146113: Sat Aug 15 18:32:35 2026 read: IOPS=6, BW=103KiB/s (105kB/s)(6256KiB/61013msec) clat (msec): min=7, max=313, avg=31.30, stdev=28.55 lat (msec): min=7, max=313, avg=31.31, stdev=28.55 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 39], 90.00th=[ 54], 95.00th=[ 82], | 99.00th=[ 176], 99.50th=[ 188], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 384, per=29.11%, avg=109.46, stdev=75.38, samples=113 iops : min= 1, max= 24, avg= 6.07, stdev= 4.82, samples=113 write: IOPS=6, BW=98.9KiB/s (101kB/s)(6032KiB/61013msec); 0 zone resets clat (msec): min=39, max=348, avg=129.16, stdev=49.83 lat (msec): min=39, max=348, avg=129.16, stdev=49.83 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 63], 10.00th=[ 72], 20.00th=[ 88], | 30.00th=[ 97], 40.00th=[ 109], 50.00th=[ 124], 60.00th=[ 136], | 70.00th=[ 148], 80.00th=[ 169], 90.00th=[ 197], 95.00th=[ 224], | 99.00th=[ 284], 99.50th=[ 288], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 31, max= 191, per=25.02%, avg=99.08, stdev=34.55, samples=120 iops : min= 1, max= 11, avg= 5.43, stdev= 2.23, samples=120 lat (msec) : 10=2.73%, 20=17.06%, 50=25.91%, 100=20.05%, 250=32.94% lat (msec) : 500=1.30% cpu : usr=0.02%, sys=1.53%, ctx=1350, 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=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=146114: Sat Aug 15 18:32:35 2026 read: IOPS=5, BW=95.6KiB/s (97.8kB/s)(6032KiB/63127msec) clat (msec): min=6, max=310, avg=34.15, stdev=33.59 lat (msec): min=6, max=310, avg=34.15, stdev=33.59 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 45], 90.00th=[ 72], 95.00th=[ 102], | 99.00th=[ 167], 99.50th=[ 222], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 31, max= 288, per=28.03%, avg=105.39, stdev=63.20, samples=112 iops : min= 1, max= 18, avg= 5.83, stdev= 4.01, samples=112 write: IOPS=6, BW=99.1KiB/s (101kB/s)(6256KiB/63127msec); 0 zone resets clat (msec): min=38, max=403, avg=128.29, stdev=52.03 lat (msec): min=38, max=403, avg=128.29, stdev=52.03 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 75], 20.00th=[ 89], | 30.00th=[ 96], 40.00th=[ 107], 50.00th=[ 120], 60.00th=[ 132], | 70.00th=[ 146], 80.00th=[ 165], 90.00th=[ 190], 95.00th=[ 226], | 99.00th=[ 334], 99.50th=[ 342], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 31, max= 191, per=25.12%, avg=99.47, stdev=37.38, samples=124 iops : min= 1, max= 11, avg= 5.45, stdev= 2.36, samples=124 lat (msec) : 10=2.86%, 20=16.67%, 50=21.74%, 100=22.92%, 250=34.64% lat (msec) : 500=1.17% cpu : usr=0.04%, sys=1.55%, ctx=1398, 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=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=377KiB/s (386kB/s), 90.4KiB/s-103KiB/s (92.5kB/s-105kB/s), io=23.4MiB (24.5MB), run=61013-63561msec WRITE: bw=396KiB/s (406kB/s), 98.9KiB/s-103KiB/s (101kB/s-105kB/s), io=24.6MiB (25.8MB), run=61013-63561msec 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=146133: Sat Aug 15 18:32:49 2026 read: IOPS=2, BW=2511KiB/s (2571kB/s)(7168KiB/2855msec) clat (usec): min=527, max=267317, avg=187875.47, stdev=88578.56 lat (usec): min=528, max=267318, avg=187877.01, stdev=88578.52 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[168821], | 30.00th=[189793], 40.00th=[189793], 50.00th=[221250], 60.00th=[231736], | 70.00th=[231736], 80.00th=[233833], 90.00th=[267387], 95.00th=[267387], | 99.00th=[267387], 99.50th=[267387], 99.90th=[267387], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 2031, max= 4015, per=54.56%, avg=2752.75, stdev=937.70, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1793KiB/s (1836kB/s)(5120KiB/2855msec); 0 zone resets clat (msec): min=204, max=304, avg=255.90, stdev=42.18 lat (msec): min=204, max=304, avg=256.79, stdev=41.65 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 259], 60.00th=[ 259], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 305], 95.00th=[ 305], | 99.00th=[ 305], 99.50th=[ 305], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 2031, max= 4000, per=38.13%, avg=2693.00, stdev=1131.93, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=58.33%, 500=33.33% cpu : usr=0.00%, sys=21.58%, ctx=353, 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=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=146134: Sat Aug 15 18:32:49 2026 read: IOPS=0, BW=505KiB/s (517kB/s)(2048KiB/4059msec) clat (usec): min=655, max=202317, avg=101486.23, stdev=142596.52 lat (usec): min=657, max=202319, avg=101488.23, stdev=142596.75 clat percentiles (usec): | 1.00th=[ 652], 5.00th=[ 652], 10.00th=[ 652], 20.00th=[ 652], | 30.00th=[ 652], 40.00th=[ 652], 50.00th=[ 652], 60.00th=[202376], | 70.00th=[202376], 80.00th=[202376], 90.00th=[202376], 95.00th=[202376], | 99.00th=[202376], 99.50th=[202376], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 1440, max= 2039, per=34.48%, avg=1739.50, stdev=423.56, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2523KiB/s (2583kB/s)(10.0MiB/4059msec); 0 zone resets clat (msec): min=119, max=1234, avg=371.06, stdev=335.07 lat (msec): min=119, max=1235, avg=371.36, stdev=334.92 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 165], | 30.00th=[ 180], 40.00th=[ 207], 50.00th=[ 249], 60.00th=[ 300], | 70.00th=[ 305], 80.00th=[ 326], 90.00th=[ 634], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 2007, max= 4096, per=40.38%, avg=2852.20, stdev=1127.78, samples=5 iops : min= 1, max= 4, avg= 2.20, stdev= 1.30, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=16.09%, ctx=197, 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=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=146136: Sat Aug 15 18:32:49 2026 read: IOPS=1, BW=1750KiB/s (1792kB/s)(6144KiB/3510msec) clat (usec): min=522, max=337232, avg=117862.21, stdev=135608.64 lat (usec): min=524, max=337234, avg=117863.38, stdev=135608.53 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 570], | 30.00th=[ 570], 40.00th=[ 69731], 50.00th=[ 69731], 60.00th=[ 72877], | 70.00th=[227541], 80.00th=[227541], 90.00th=[337642], 95.00th=[337642], | 99.00th=[337642], 99.50th=[337642], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 2031, max= 4015, per=66.38%, avg=3348.67, stdev=1141.16, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1750KiB/s (1792kB/s)(6144KiB/3510msec); 0 zone resets clat (msec): min=146, max=781, avg=456.79, stdev=220.24 lat (msec): min=146, max=781, avg=456.87, stdev=220.24 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 518], | 70.00th=[ 575], 80.00th=[ 575], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1442, max= 2048, per=27.29%, avg=1927.83, stdev=238.73, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (usec) : 750=16.67% lat (msec) : 100=16.67%, 250=16.67%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.03%, sys=13.54%, ctx=213, 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=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=146137: Sat Aug 15 18:32:49 2026 read: IOPS=1, BW=1725KiB/s (1766kB/s)(5120KiB/2968msec) clat (usec): min=434, max=256043, avg=130924.65, stdev=121895.03 lat (usec): min=435, max=256044, avg=130925.67, stdev=121895.34 clat percentiles (usec): | 1.00th=[ 437], 5.00th=[ 437], 10.00th=[ 437], 20.00th=[ 437], | 30.00th=[ 529], 40.00th=[ 529], 50.00th=[183501], 60.00th=[183501], | 70.00th=[214959], 80.00th=[214959], 90.00th=[256902], 95.00th=[256902], | 99.00th=[256902], 99.50th=[256902], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2415KiB/s (2473kB/s)(7168KiB/2968msec); 0 zone resets clat (msec): min=114, max=502, avg=302.62, stdev=147.97 lat (msec): min=114, max=503, avg=302.73, stdev=147.97 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 178], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 334], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 464], 90.00th=[ 502], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 1460, max= 6095, per=48.20%, avg=3404.50, stdev=2100.21, samples=4 iops : min= 1, max= 5, avg= 2.75, stdev= 1.71, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 250=41.67%, 500=33.33%, 750=8.33% cpu : usr=0.03%, sys=19.55%, ctx=253, 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=5046KiB/s (5167kB/s), 505KiB/s-2511KiB/s (517kB/s-2571kB/s), io=20.0MiB (20.0MB), run=2855-4059msec WRITE: bw=7064KiB/s (7233kB/s), 1750KiB/s-2523KiB/s (1792kB/s-2583kB/s), io=28.0MiB (29.4MB), run=2855-4059msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146138: Sat Aug 15 18:32:49 2026 read: IOPS=1, BW=1754KiB/s (1796kB/s)(7168KiB/4087msec) clat (msec): min=74, max=659, avg=263.13, stdev=254.88 lat (msec): min=74, max=659, avg=263.13, stdev=254.88 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 75], 10.00th=[ 75], 20.00th=[ 101], | 30.00th=[ 101], 40.00th=[ 101], 50.00th=[ 142], 60.00th=[ 159], | 70.00th=[ 159], 80.00th=[ 609], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1358, max= 4087, per=62.12%, avg=2886.75, stdev=1399.99, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1253KiB/s (1283kB/s)(5120KiB/4087msec); 0 zone resets clat (msec): min=299, max=443, avg=387.69, stdev=60.33 lat (msec): min=299, max=443, avg=387.78, stdev=60.34 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 351], 40.00th=[ 351], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 443], 95.00th=[ 443], | 99.00th=[ 443], 99.50th=[ 443], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 2035, max= 3923, per=40.97%, avg=2665.67, stdev=1088.88, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=16.67%, 250=25.00%, 500=41.67%, 750=16.67% cpu : usr=0.00%, sys=6.49%, ctx=126, 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=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=146139: Sat Aug 15 18:32:49 2026 read: IOPS=0, BW=465KiB/s (476kB/s)(2048KiB/4407msec) clat (msec): min=95, max=511, avg=303.30, stdev=294.27 lat (msec): min=95, max=511, avg=303.30, stdev=294.27 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 95], | 30.00th=[ 95], 40.00th=[ 95], 50.00th=[ 95], 60.00th=[ 510], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 1992, max= 2027, per=43.24%, avg=2009.50, stdev=24.75, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2324KiB/s (2379kB/s)(10.0MiB/4407msec); 0 zone resets clat (msec): min=84, max=979, avg=373.35, stdev=301.93 lat (msec): min=84, max=979, avg=373.59, stdev=302.17 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 89], | 30.00th=[ 138], 40.00th=[ 239], 50.00th=[ 313], 60.00th=[ 326], | 70.00th=[ 347], 80.00th=[ 397], 90.00th=[ 827], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 1992, max= 4096, per=37.37%, avg=2431.60, stdev=930.65, samples=5 iops : min= 1, max= 4, avg= 1.80, stdev= 1.30, samples=5 lat (msec) : 100=25.00%, 250=16.67%, 500=33.33%, 750=8.33%, 1000=16.67% cpu : usr=0.02%, sys=6.60%, ctx=94, 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=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=146140: Sat Aug 15 18:32:49 2026 read: IOPS=1, BW=1529KiB/s (1566kB/s)(6144KiB/4017msec) clat (msec): min=77, max=331, avg=195.33, stdev=119.98 lat (msec): min=77, max=331, avg=195.33, stdev=119.98 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 80], | 30.00th=[ 80], 40.00th=[ 106], 50.00th=[ 106], 60.00th=[ 284], | 70.00th=[ 296], 80.00th=[ 296], 90.00th=[ 330], 95.00th=[ 330], | 99.00th=[ 330], 99.50th=[ 330], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 1961, max= 4079, per=54.33%, avg=2524.50, stdev=1036.83, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1529KiB/s (1566kB/s)(6144KiB/4017msec); 0 zone resets clat (msec): min=188, max=857, avg=426.30, stdev=266.19 lat (msec): min=188, max=857, avg=426.39, stdev=266.18 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 203], | 30.00th=[ 203], 40.00th=[ 234], 50.00th=[ 234], 60.00th=[ 535], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1370, max= 2043, per=29.02%, avg=1888.00, stdev=291.46, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=5.00%, ctx=87, 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=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=146141: Sat Aug 15 18:32:49 2026 read: IOPS=1, BW=1198KiB/s (1227kB/s)(5120KiB/4274msec) clat (msec): min=60, max=520, avg=187.35, stdev=188.84 lat (msec): min=60, max=520, avg=187.35, stdev=188.83 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 61], | 30.00th=[ 97], 40.00th=[ 97], 50.00th=[ 117], 60.00th=[ 117], | 70.00th=[ 142], 80.00th=[ 142], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 1992, max= 4031, per=57.60%, avg=2676.67, stdev=1172.91, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1677KiB/s (1717kB/s)(7168KiB/4274msec); 0 zone resets clat (msec): min=135, max=705, avg=432.54, stdev=195.07 lat (msec): min=135, max=705, avg=432.65, stdev=195.08 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 262], | 30.00th=[ 397], 40.00th=[ 397], 50.00th=[ 409], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 584], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 1992, max= 2048, per=31.09%, avg=2022.60, stdev=20.79, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 750=33.33% cpu : usr=0.02%, sys=5.62%, ctx=116, 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=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=4647KiB/s (4759kB/s), 465KiB/s-1754KiB/s (476kB/s-1796kB/s), io=20.0MiB (20.0MB), run=4017-4407msec WRITE: bw=6506KiB/s (6662kB/s), 1253KiB/s-2324KiB/s (1283kB/s-2379kB/s), io=28.0MiB (29.4MB), run=4017-4407msec 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=146148: Sat Aug 15 18:33:01 2026 read: IOPS=1, BW=5240KiB/s (5366kB/s)(12.0MiB/2345msec) clat (msec): min=690, max=864, avg=765.68, stdev=89.77 lat (msec): min=690, max=864, avg=765.68, stdev=89.77 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 8143, max= 8192, per=100.00%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=10.79%, ctx=316, 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=146149: Sat Aug 15 18:33:01 2026 read: IOPS=0, BW=1475KiB/s (1510kB/s)(4096KiB/2777msec) clat (nsec): min=810791k, max=810791k, avg=810791385.00, stdev= 0.00 lat (nsec): min=810794k, max=810794k, avg=810794075.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] 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 write: IOPS=0, BW=2950KiB/s (3021kB/s)(8192KiB/2777msec); 0 zone resets clat (msec): min=584, max=1303, avg=943.78, stdev=508.04 lat (msec): min=584, max=1303, avg=944.03, stdev=507.98 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 1301], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 8159, max= 8159, per=69.15%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.16%, ctx=174, 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=146150: Sat Aug 15 18:33:01 2026 write: IOPS=1, BW=4635KiB/s (4746kB/s)(12.0MiB/2651msec); 0 zone resets clat (msec): min=784, max=955, avg=867.33, stdev=85.65 lat (msec): min=784, max=955, avg=867.65, stdev=85.66 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 953], 80.00th=[ 953], 90.00th=[ 953], 95.00th=[ 953], | 99.00th=[ 953], 99.50th=[ 953], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 8143, max= 8192, per=69.22%, avg=8167.50, stdev=34.65, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=7.77%, 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=146151: Sat Aug 15 18:33:01 2026 write: IOPS=1, BW=6056KiB/s (6202kB/s)(12.0MiB/2029msec); 0 zone resets clat (msec): min=472, max=966, avg=667.81, stdev=262.90 lat (msec): min=473, max=967, avg=668.21, stdev=262.94 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 472], 10.00th=[ 472], 20.00th=[ 472], | 30.00th=[ 472], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min=16286, max=16286, per=100.00%, avg=16286.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=4.68%, ctx=55, 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=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=5900KiB/s (6041kB/s), 1475KiB/s-5240KiB/s (1510kB/s-5366kB/s), io=16.0MiB (16.8MB), run=2345-2777msec WRITE: bw=11.5MiB/s (12.1MB/s), 2950KiB/s-6056KiB/s (3021kB/s-6202kB/s), io=32.0MiB (33.6MB), run=2029-2777msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146155: Sat Aug 15 18:33:02 2026 read: IOPS=1, BW=4813KiB/s (4929kB/s)(12.0MiB/2553msec) clat (msec): min=277, max=1327, avg=850.73, stdev=531.56 lat (msec): min=277, max=1327, avg=850.73, stdev=531.56 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.37%, ctx=34, majf=0, minf=7 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=146156: Sat Aug 15 18:33:02 2026 read: IOPS=0, BW=1549KiB/s (1586kB/s)(4096KiB/2645msec) clat (nsec): min=816956k, max=816956k, avg=816956350.00, stdev= 0.00 lat (nsec): min=816957k, max=816957k, avg=816957274.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 818], 5.00th=[ 818], 10.00th=[ 818], 20.00th=[ 818], | 30.00th=[ 818], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 818], | 70.00th=[ 818], 80.00th=[ 818], 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= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3097KiB/s (3171kB/s)(8192KiB/2645msec); 0 zone resets clat (msec): min=307, max=1505, avg=906.16, stdev=847.06 lat (msec): min=311, max=1505, avg=908.58, stdev=844.14 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 1502], | 70.00th=[ 1502], 80.00th=[ 1502], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 8159, max= 8159, per=77.34%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.74%, ctx=63, 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=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=146157: Sat Aug 15 18:33:02 2026 write: IOPS=0, BW=3956KiB/s (4051kB/s)(12.0MiB/3106msec); 0 zone resets clat (msec): min=259, max=1636, avg=1034.31, stdev=704.08 lat (msec): min=260, max=1636, avg=1034.97, stdev=704.32 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1636], 80.00th=[ 1636], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 8175, max= 8175, per=77.50%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.12%, ctx=42, majf=0, minf=7 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=146158: Sat Aug 15 18:33:02 2026 write: IOPS=1, BW=5729KiB/s (5866kB/s)(12.0MiB/2145msec); 0 zone resets clat (msec): min=222, max=1336, avg=703.00, stdev=572.83 lat (msec): min=222, max=1337, avg=703.47, stdev=572.97 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 5962, max= 5962, per=56.52%, avg=5962.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.18%, ctx=57, 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=6194KiB/s (6343kB/s), 1549KiB/s-4813KiB/s (1586kB/s-4929kB/s), io=16.0MiB (16.8MB), run=2553-2645msec WRITE: bw=10.3MiB/s (10.8MB/s), 3097KiB/s-5729KiB/s (3171kB/s-5866kB/s), io=32.0MiB (33.6MB), run=2145-3106msec