== sanity test 398b: DIO and buffer IO race ============== 20:40:40 (1786754440) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.1867 s, 9.7 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=145657: Fri Aug 14 20:43:17 2026 read: IOPS=10, BW=43.6KiB/s (44.6kB/s)(5992KiB/137553msec) clat (usec): min=33, max=1100.7k, avg=44887.48, stdev=45794.61 lat (usec): min=33, max=1100.7k, avg=44889.44, stdev=45795.00 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 11600], | 20.00th=[ 21103], 30.00th=[ 26870], 40.00th=[ 31851], | 50.00th=[ 38011], 60.00th=[ 43779], 70.00th=[ 52691], | 80.00th=[ 64226], 90.00th=[ 83362], 95.00th=[ 98042], | 99.00th=[ 152044], 99.50th=[ 189793], 99.90th=[ 616563], | 99.95th=[1098908], 99.99th=[1098908] bw ( KiB/s): min= 7, max= 110, per=24.78%, avg=43.11, stdev=19.30, samples=269 iops : min= 1, max= 27, avg=10.12, stdev= 4.86, samples=269 write: IOPS=11, BW=45.8KiB/s (46.9kB/s)(6296KiB/137553msec); 0 zone resets clat (usec): min=1120, max=453538, avg=44307.60, stdev=45955.27 lat (usec): min=1121, max=453540, avg=44310.34, stdev=45956.40 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1401], 10.00th=[ 2024], 20.00th=[ 5145], | 30.00th=[ 9765], 40.00th=[ 22152], 50.00th=[ 33162], 60.00th=[ 43779], | 70.00th=[ 56886], 80.00th=[ 76022], 90.00th=[105382], 95.00th=[127402], | 99.00th=[206570], 99.50th=[238027], 99.90th=[329253], 99.95th=[455082], | 99.99th=[455082] bw ( KiB/s): min= 7, max= 144, per=25.03%, avg=45.56, stdev=20.52, samples=268 iops : min= 1, max= 36, avg=10.74, stdev= 5.16, samples=268 lat (usec) : 50=0.52%, 100=3.26%, 250=0.36%, 500=0.13%, 750=0.10% lat (msec) : 2=5.05%, 4=3.45%, 10=7.19%, 20=8.33%, 50=37.96% lat (msec) : 100=25.59%, 250=7.65%, 500=0.33%, 750=0.07%, 2000=0.03% cpu : usr=0.07%, sys=5.15%, ctx=6795, 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=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=145659: Fri Aug 14 20:43:17 2026 read: IOPS=11, BW=44.1KiB/s (45.2kB/s)(5940KiB/134566msec) clat (usec): min=30, max=589287, avg=43175.36, stdev=36752.11 lat (usec): min=31, max=589288, avg=43192.34, stdev=36756.75 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 62], 10.00th=[ 988], 20.00th=[ 20579], | 30.00th=[ 26084], 40.00th=[ 30802], 50.00th=[ 36439], 60.00th=[ 42730], | 70.00th=[ 52167], 80.00th=[ 63701], 90.00th=[ 81265], 95.00th=[ 94897], | 99.00th=[143655], 99.50th=[223347], 99.90th=[442500], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 5, max= 117, per=25.26%, avg=43.95, stdev=19.57, samples=263 iops : min= 1, max= 29, avg=10.34, stdev= 4.92, samples=263 write: IOPS=11, BW=47.2KiB/s (48.3kB/s)(6348KiB/134566msec); 0 zone resets clat (usec): min=1034, max=1080.1k, avg=43979.97, stdev=49927.72 lat (usec): min=1035, max=1080.1k, avg=43982.97, stdev=49928.05 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1434], 10.00th=[ 2147], | 20.00th=[ 5473], 30.00th=[ 10421], 40.00th=[ 21890], | 50.00th=[ 33817], 60.00th=[ 43779], 70.00th=[ 56361], | 80.00th=[ 73925], 90.00th=[ 101188], 95.00th=[ 124257], | 99.00th=[ 187696], 99.50th=[ 212861], 99.90th=[ 316670], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 111, per=25.88%, avg=47.11, stdev=19.97, samples=262 iops : min= 1, max= 27, avg=11.13, stdev= 5.05, samples=262 lat (usec) : 50=0.42%, 100=3.84%, 250=0.42%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=4.69%, 4=3.87%, 10=7.00%, 20=8.82%, 50=36.91% lat (msec) : 100=26.53%, 250=7.06%, 500=0.20%, 750=0.03%, 2000=0.03% cpu : usr=0.09%, sys=5.52%, ctx=6651, 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=145661: Fri Aug 14 20:43:17 2026 read: IOPS=11, BW=44.3KiB/s (45.3kB/s)(6028KiB/136208msec) clat (usec): min=32, max=317298, avg=42310.89, stdev=31529.79 lat (usec): min=33, max=317300, avg=42312.67, stdev=31529.81 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 64], 10.00th=[ 2180], 20.00th=[ 20841], | 30.00th=[ 26084], 40.00th=[ 31589], 50.00th=[ 36439], 60.00th=[ 43254], | 70.00th=[ 50594], 80.00th=[ 61080], 90.00th=[ 80217], 95.00th=[ 94897], | 99.00th=[139461], 99.50th=[196084], 99.90th=[274727], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 7, max= 118, per=25.60%, avg=44.55, stdev=19.96, samples=264 iops : min= 1, max= 29, avg=10.48, stdev= 5.04, samples=264 write: IOPS=11, BW=45.0KiB/s (47.1kB/s)(6260KiB/136208msec); 0 zone resets clat (usec): min=1156, max=1160.9k, avg=45936.20, stdev=52717.55 lat (usec): min=1158, max=1160.9k, avg=45938.58, stdev=52717.27 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1450], 10.00th=[ 2573], | 20.00th=[ 6063], 30.00th=[ 11731], 40.00th=[ 24249], | 50.00th=[ 34341], 60.00th=[ 45876], 70.00th=[ 58459], | 80.00th=[ 77071], 90.00th=[ 102237], 95.00th=[ 127402], | 99.00th=[ 193987], 99.50th=[ 229639], 99.90th=[ 413139], | 99.95th=[1166017], 99.99th=[1166017] bw ( KiB/s): min= 7, max= 111, per=25.22%, avg=45.91, stdev=18.61, samples=266 iops : min= 1, max= 27, avg=10.83, stdev= 4.67, samples=266 lat (usec) : 50=0.52%, 100=3.48%, 250=0.62%, 500=0.13%, 1000=0.03% lat (msec) : 2=4.13%, 4=3.09%, 10=7.26%, 20=8.82%, 50=38.05% lat (msec) : 100=26.40%, 250=7.13%, 500=0.29%, 2000=0.03% cpu : usr=0.07%, sys=5.26%, ctx=6752, 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=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=145662: Fri Aug 14 20:43:17 2026 read: IOPS=11, BW=45.0KiB/s (46.1kB/s)(6052KiB/134434msec) clat (usec): min=32, max=250859, avg=42172.87, stdev=32149.84 lat (usec): min=32, max=250860, avg=42176.29, stdev=32150.14 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 343], 20.00th=[ 19792], | 30.00th=[ 25297], 40.00th=[ 30278], 50.00th=[ 35914], 60.00th=[ 42730], | 70.00th=[ 51119], 80.00th=[ 63701], 90.00th=[ 79168], 95.00th=[ 95945], | 99.00th=[158335], 99.50th=[206570], 99.90th=[248513], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 7, max= 101, per=26.28%, avg=45.72, stdev=18.57, samples=258 iops : min= 1, max= 25, avg=10.78, stdev= 4.66, samples=258 write: IOPS=11, BW=46.4KiB/s (47.5kB/s)(6236KiB/134434msec); 0 zone resets clat (usec): min=1187, max=1085.4k, avg=44910.22, stdev=52591.39 lat (usec): min=1189, max=1085.4k, avg=44912.23, stdev=52591.31 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1483], 10.00th=[ 2540], | 20.00th=[ 5276], 30.00th=[ 10028], 40.00th=[ 21103], | 50.00th=[ 32900], 60.00th=[ 44827], 70.00th=[ 58983], | 80.00th=[ 74974], 90.00th=[ 102237], 95.00th=[ 130548], | 99.00th=[ 196084], 99.50th=[ 221250], 99.90th=[ 408945], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 111, per=25.39%, avg=46.22, stdev=20.17, samples=263 iops : min= 1, max= 27, avg=10.90, stdev= 5.09, samples=263 lat (usec) : 50=0.52%, 100=4.00%, 250=0.26%, 500=0.29%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=4.30%, 4=3.97%, 10=7.19%, 20=9.05%, 50=36.62% lat (msec) : 100=25.98%, 250=7.45%, 500=0.23%, 2000=0.03% cpu : usr=0.07%, sys=5.21%, ctx=6575, 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=175KiB/s (179kB/s), 43.6KiB/s-45.0KiB/s (44.6kB/s-46.1kB/s), io=23.4MiB (24.6MB), run=134434-137553msec WRITE: bw=183KiB/s (187kB/s), 45.8KiB/s-47.2KiB/s (46.9kB/s-48.3kB/s), io=24.6MiB (25.7MB), run=134434-137553msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145658: Fri Aug 14 20:45:58 2026 read: IOPS=5, BW=20.1KiB/s (20.6kB/s)(5992KiB/298187msec) clat (msec): min=5, max=1111, avg=40.87, stdev=48.78 lat (msec): min=5, max=1111, avg=40.88, stdev=48.78 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 54], 90.00th=[ 83], 95.00th=[ 113], | 99.00th=[ 226], 99.50th=[ 268], 99.90th=[ 380], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7, max= 95, per=28.71%, avg=22.96, stdev=15.31, samples=502 iops : min= 1, max= 23, avg= 5.11, stdev= 3.87, samples=502 write: IOPS=5, BW=21.1KiB/s (21.6kB/s)(6296KiB/298187msec); 0 zone resets clat (msec): min=42, max=577, avg=150.22, stdev=69.80 lat (msec): min=42, max=577, avg=150.22, stdev=69.80 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 71], 10.00th=[ 81], 20.00th=[ 94], | 30.00th=[ 108], 40.00th=[ 121], 50.00th=[ 133], 60.00th=[ 148], | 70.00th=[ 171], 80.00th=[ 197], 90.00th=[ 245], 95.00th=[ 288], | 99.00th=[ 380], 99.50th=[ 422], 99.90th=[ 558], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 48, per=24.79%, avg=20.83, stdev= 9.29, samples=579 iops : min= 1, max= 12, avg= 4.56, stdev= 2.40, samples=579 lat (msec) : 10=1.86%, 20=14.16%, 50=22.30%, 100=19.63%, 250=37.34% lat (msec) : 500=4.62%, 750=0.07%, 2000=0.03% cpu : usr=0.04%, sys=1.34%, ctx=5644, 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=145660: Fri Aug 14 20:45:58 2026 read: IOPS=4, BW=19.9KiB/s (20.4kB/s)(5940KiB/298101msec) clat (msec): min=6, max=1075, avg=38.81, stdev=44.03 lat (msec): min=6, max=1075, avg=38.81, stdev=44.03 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 51], 90.00th=[ 75], 95.00th=[ 107], | 99.00th=[ 190], 99.50th=[ 218], 99.90th=[ 363], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 95, per=29.10%, avg=23.28, stdev=15.86, samples=491 iops : min= 1, max= 23, avg= 5.19, stdev= 4.01, samples=491 write: IOPS=5, BW=21.3KiB/s (21.8kB/s)(6348KiB/298101msec); 0 zone resets clat (msec): min=34, max=698, avg=151.20, stdev=75.81 lat (msec): min=34, max=698, avg=151.20, stdev=75.81 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 69], 10.00th=[ 79], 20.00th=[ 93], | 30.00th=[ 106], 40.00th=[ 120], 50.00th=[ 133], 60.00th=[ 148], | 70.00th=[ 169], 80.00th=[ 199], 90.00th=[ 251], 95.00th=[ 300], | 99.00th=[ 435], 99.50th=[ 477], 99.90th=[ 642], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 48, per=25.07%, avg=21.06, stdev= 9.44, samples=578 iops : min= 1, max= 12, avg= 4.62, stdev= 2.43, samples=578 lat (msec) : 10=1.63%, 20=13.74%, 50=23.34%, 100=20.18%, 250=35.81% lat (msec) : 500=5.08%, 750=0.20%, 2000=0.03% cpu : usr=0.04%, sys=1.34%, ctx=5573, 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=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=145663: Fri Aug 14 20:45:58 2026 read: IOPS=5, BW=20.4KiB/s (20.9kB/s)(6028KiB/295468msec) clat (msec): min=6, max=383, avg=40.06, stdev=39.45 lat (msec): min=6, max=383, avg=40.06, stdev=39.45 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 53], 90.00th=[ 84], 95.00th=[ 112], | 99.00th=[ 218], 99.50th=[ 262], 99.90th=[ 372], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 7, max= 87, per=27.94%, avg=22.35, stdev=15.35, samples=519 iops : min= 1, max= 21, avg= 4.94, stdev= 3.87, samples=519 write: IOPS=5, BW=21.2KiB/s (21.7kB/s)(6260KiB/295468msec); 0 zone resets clat (msec): min=41, max=1061, avg=149.90, stdev=75.89 lat (msec): min=41, max=1061, avg=149.90, stdev=75.89 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 68], 10.00th=[ 78], 20.00th=[ 93], | 30.00th=[ 106], 40.00th=[ 117], 50.00th=[ 132], 60.00th=[ 146], | 70.00th=[ 169], 80.00th=[ 199], 90.00th=[ 243], 95.00th=[ 296], | 99.00th=[ 401], 99.50th=[ 447], 99.90th=[ 701], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 48, per=25.09%, avg=21.07, stdev= 9.77, samples=570 iops : min= 1, max= 12, avg= 4.62, stdev= 2.51, samples=570 lat (msec) : 10=1.95%, 20=13.90%, 50=22.66%, 100=20.51%, 250=35.87% lat (msec) : 500=4.98%, 750=0.10%, 2000=0.03% cpu : usr=0.04%, sys=1.36%, ctx=5558, 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=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=145664: Fri Aug 14 20:45:58 2026 read: IOPS=5, BW=20.4KiB/s (20.8kB/s)(6052KiB/297345msec) clat (msec): min=6, max=377, avg=38.88, stdev=39.03 lat (msec): min=6, max=377, avg=38.88, stdev=39.03 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 54], 90.00th=[ 79], 95.00th=[ 108], | 99.00th=[ 201], 99.50th=[ 313], 99.90th=[ 368], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 7, max= 118, per=29.08%, avg=23.27, stdev=15.94, samples=501 iops : min= 1, max= 29, avg= 5.18, stdev= 4.04, samples=501 write: IOPS=5, BW=20.0KiB/s (21.5kB/s)(6236KiB/297345msec); 0 zone resets clat (msec): min=47, max=1062, avg=152.67, stdev=76.74 lat (msec): min=47, max=1062, avg=152.67, stdev=76.73 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 72], 10.00th=[ 81], 20.00th=[ 94], | 30.00th=[ 107], 40.00th=[ 118], 50.00th=[ 132], 60.00th=[ 148], | 70.00th=[ 171], 80.00th=[ 201], 90.00th=[ 253], 95.00th=[ 309], | 99.00th=[ 401], 99.50th=[ 418], 99.90th=[ 558], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 55, per=24.78%, avg=20.81, stdev= 9.59, samples=575 iops : min= 1, max= 13, avg= 4.56, stdev= 2.46, samples=575 lat (msec) : 10=1.99%, 20=14.03%, 50=23.11%, 100=19.37%, 250=35.74% lat (msec) : 500=5.70%, 750=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.32%, ctx=5418, 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=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=80.5KiB/s (82.5kB/s), 19.9KiB/s-20.4KiB/s (20.4kB/s-20.9kB/s), io=23.4MiB (24.6MB), run=295468-298187msec WRITE: bw=84.3KiB/s (86.3kB/s), 20.0KiB/s-21.3KiB/s (21.5kB/s-21.8kB/s), io=24.6MiB (25.7MB), run=295468-298187msec 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=145730: Fri Aug 14 20:46:38 2026 read: IOPS=12, BW=202KiB/s (207kB/s)(5920KiB/29254msec) clat (usec): min=31, max=241963, avg=38728.08, stdev=35550.04 lat (usec): min=31, max=241963, avg=38729.68, stdev=35549.90 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 91], | 30.00th=[ 16909], 40.00th=[ 28705], 50.00th=[ 35390], 60.00th=[ 42206], | 70.00th=[ 51119], 80.00th=[ 63177], 90.00th=[ 84411], 95.00th=[102237], | 99.00th=[147850], 99.50th=[168821], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 63, max= 350, per=25.07%, avg=199.53, stdev=72.54, samples=57 iops : min= 3, max= 21, avg=11.67, stdev= 4.56, samples=57 write: IOPS=13, BW=218KiB/s (223kB/s)(6368KiB/29254msec); 0 zone resets clat (usec): min=1596, max=205465, avg=37211.41, stdev=39254.94 lat (usec): min=1598, max=205469, avg=37217.82, stdev=39252.29 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2540], 10.00th=[ 3261], 20.00th=[ 5800], | 30.00th=[ 8225], 40.00th=[ 11994], 50.00th=[ 20317], 60.00th=[ 34341], | 70.00th=[ 50594], 80.00th=[ 67634], 90.00th=[ 94897], 95.00th=[120062], | 99.00th=[166724], 99.50th=[189793], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 30, max= 445, per=25.90%, avg=216.79, stdev=91.73, samples=57 iops : min= 1, max= 27, avg=12.75, stdev= 5.77, samples=57 lat (usec) : 50=0.91%, 100=9.51%, 250=2.08%, 500=0.39%, 750=0.13% lat (msec) : 2=1.69%, 4=5.73%, 10=11.07%, 20=8.72%, 50=28.78% lat (msec) : 100=23.57%, 250=7.42% cpu : usr=0.10%, sys=5.78%, ctx=1404, 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=145731: Fri Aug 14 20:46:38 2026 read: IOPS=11, BW=191KiB/s (196kB/s)(5744KiB/30076msec) clat (usec): min=36, max=176356, avg=37666.11, stdev=33662.79 lat (usec): min=36, max=176356, avg=37667.27, stdev=33662.79 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 55], 10.00th=[ 64], 20.00th=[ 78], | 30.00th=[ 293], 40.00th=[ 26608], 50.00th=[ 37487], 60.00th=[ 45876], | 70.00th=[ 55313], 80.00th=[ 65274], 90.00th=[ 80217], 95.00th=[ 92799], | 99.00th=[149947], 99.50th=[160433], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 30, max= 401, per=24.85%, avg=197.79, stdev=81.52, samples=57 iops : min= 1, max= 25, avg=11.56, stdev= 5.13, samples=57 write: IOPS=13, BW=218KiB/s (223kB/s)(6544KiB/30076msec); 0 zone resets clat (usec): min=1594, max=310732, avg=39754.07, stdev=46373.20 lat (usec): min=1597, max=310734, avg=39761.07, stdev=46374.80 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2057], 10.00th=[ 3490], 20.00th=[ 5866], | 30.00th=[ 8586], 40.00th=[ 13435], 50.00th=[ 21627], 60.00th=[ 32900], | 70.00th=[ 47973], 80.00th=[ 68682], 90.00th=[102237], 95.00th=[128451], | 99.00th=[210764], 99.50th=[254804], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 30, max= 411, per=26.03%, avg=217.90, stdev=89.60, samples=59 iops : min= 1, max= 25, avg=12.83, stdev= 5.63, samples=59 lat (usec) : 50=1.56%, 100=11.33%, 250=1.04%, 500=0.13%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=2.86%, 4=4.56%, 10=11.59%, 20=8.33%, 50=26.43% lat (msec) : 100=24.48%, 250=7.03%, 500=0.39% cpu : usr=0.07%, sys=5.83%, ctx=1410, 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=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=145732: Fri Aug 14 20:46:38 2026 read: IOPS=13, BW=216KiB/s (222kB/s)(6256KiB/28903msec) clat (usec): min=37, max=196963, avg=39754.41, stdev=33974.23 lat (usec): min=38, max=196964, avg=39755.87, stdev=33974.19 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 82], | 30.00th=[ 20579], 40.00th=[ 30540], 50.00th=[ 36963], 60.00th=[ 44827], | 70.00th=[ 54264], 80.00th=[ 66323], 90.00th=[ 84411], 95.00th=[ 94897], | 99.00th=[154141], 99.50th=[170918], 99.90th=[196084], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 62, max= 414, per=27.72%, avg=220.68, stdev=81.67, samples=56 iops : min= 3, max= 25, avg=13.00, stdev= 5.14, samples=56 write: IOPS=13, BW=209KiB/s (214kB/s)(6032KiB/28903msec); 0 zone resets clat (usec): min=1636, max=178585, avg=34090.71, stdev=35953.70 lat (usec): min=1638, max=178587, avg=34100.49, stdev=35951.72 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2024], 10.00th=[ 3228], 20.00th=[ 6259], | 30.00th=[ 9503], 40.00th=[ 13435], 50.00th=[ 20579], 60.00th=[ 30802], | 70.00th=[ 41681], 80.00th=[ 58983], 90.00th=[ 84411], 95.00th=[110625], | 99.00th=[154141], 99.50th=[177210], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 31, max= 377, per=24.82%, avg=207.75, stdev=80.08, samples=57 iops : min= 1, max= 23, avg=12.19, stdev= 5.04, samples=57 lat (usec) : 50=1.04%, 100=10.55%, 250=1.04%, 500=0.52% lat (msec) : 2=2.21%, 4=4.69%, 10=9.51%, 20=9.64%, 50=32.03% lat (msec) : 100=23.05%, 250=5.73% cpu : usr=0.09%, sys=6.13%, ctx=1467, 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=145733: Fri Aug 14 20:46:38 2026 read: IOPS=13, BW=211KiB/s (216kB/s)(6032KiB/28609msec) clat (usec): min=40, max=326107, avg=38850.13, stdev=36630.13 lat (usec): min=40, max=326107, avg=38851.49, stdev=36629.95 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 64], 20.00th=[ 82], | 30.00th=[ 20841], 40.00th=[ 29754], 50.00th=[ 36439], 60.00th=[ 44827], | 70.00th=[ 51119], 80.00th=[ 62129], 90.00th=[ 81265], 95.00th=[ 96994], | 99.00th=[179307], 99.50th=[240124], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 94, max= 381, per=27.44%, avg=218.43, stdev=74.26, samples=54 iops : min= 5, max= 23, avg=12.85, stdev= 4.65, samples=54 write: IOPS=13, BW=219KiB/s (224kB/s)(6256KiB/28609msec); 0 zone resets clat (usec): min=1592, max=226469, avg=34688.37, stdev=34973.89 lat (usec): min=1594, max=226471, avg=34691.74, stdev=34976.08 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2040], 10.00th=[ 3294], 20.00th=[ 6259], | 30.00th=[ 10290], 40.00th=[ 14222], 50.00th=[ 21103], 60.00th=[ 31851], | 70.00th=[ 46400], 80.00th=[ 60556], 90.00th=[ 85459], 95.00th=[110625], | 99.00th=[139461], 99.50th=[152044], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 63, max= 478, per=26.24%, avg=219.59, stdev=89.03, samples=56 iops : min= 3, max= 29, avg=12.93, stdev= 5.63, samples=56 lat (usec) : 50=1.82%, 100=9.11%, 250=1.95%, 500=0.26%, 1000=0.13% lat (msec) : 2=2.34%, 4=3.91%, 10=9.24%, 20=10.03%, 50=31.90% lat (msec) : 100=24.22%, 250=4.95%, 500=0.13% cpu : usr=0.08%, sys=6.18%, ctx=1372, 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=796KiB/s (815kB/s), 191KiB/s-216KiB/s (196kB/s-222kB/s), io=23.4MiB (24.5MB), run=28609-30076msec WRITE: bw=838KiB/s (858kB/s), 209KiB/s-219KiB/s (214kB/s-224kB/s), io=24.6MiB (25.8MB), run=28609-30076msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145726: Fri Aug 14 20:47:27 2026 read: IOPS=4, BW=76.3KiB/s (78.1kB/s)(5920KiB/77608msec) clat (msec): min=7, max=268, avg=40.17, stdev=36.89 lat (msec): min=7, max=268, avg=40.17, stdev=36.89 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 25], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 52], 90.00th=[ 82], 95.00th=[ 120], | 99.00th=[ 213], 99.50th=[ 215], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 30, max= 288, per=29.03%, avg=87.38, stdev=54.49, samples=133 iops : min= 1, max= 18, avg= 4.69, stdev= 3.45, samples=133 write: IOPS=5, BW=82.1KiB/s (84.0kB/s)(6368KiB/77608msec); 0 zone resets clat (msec): min=50, max=480, avg=157.46, stdev=72.91 lat (msec): min=50, max=480, avg=157.48, stdev=72.91 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 77], 10.00th=[ 86], 20.00th=[ 101], | 30.00th=[ 114], 40.00th=[ 129], 50.00th=[ 144], 60.00th=[ 157], | 70.00th=[ 176], 80.00th=[ 205], 90.00th=[ 245], 95.00th=[ 296], | 99.00th=[ 447], 99.50th=[ 468], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 30, max= 190, per=25.90%, avg=82.09, stdev=35.16, samples=152 iops : min= 1, max= 11, avg= 4.34, stdev= 2.29, samples=152 lat (msec) : 10=0.91%, 20=11.85%, 50=25.52%, 100=16.28%, 250=40.49% lat (msec) : 500=4.95% cpu : usr=0.04%, sys=1.32%, ctx=1306, 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=145727: Fri Aug 14 20:47:27 2026 read: IOPS=4, BW=72.3KiB/s (74.0kB/s)(5744KiB/79463msec) clat (msec): min=8, max=308, avg=41.70, stdev=38.53 lat (msec): min=8, max=308, avg=41.70, stdev=38.53 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 58], 90.00th=[ 96], 95.00th=[ 130], | 99.00th=[ 207], 99.50th=[ 236], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 309] bw ( KiB/s): min= 30, max= 318, per=30.39%, avg=91.48, stdev=58.40, samples=124 iops : min= 1, max= 19, avg= 4.94, stdev= 3.68, samples=124 write: IOPS=5, BW=82.4KiB/s (84.3kB/s)(6544KiB/79463msec); 0 zone resets clat (msec): min=46, max=503, avg=157.01, stdev=70.39 lat (msec): min=46, max=503, avg=157.01, stdev=70.39 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 75], 10.00th=[ 86], 20.00th=[ 102], | 30.00th=[ 118], 40.00th=[ 130], 50.00th=[ 142], 60.00th=[ 159], | 70.00th=[ 174], 80.00th=[ 205], 90.00th=[ 245], 95.00th=[ 305], | 99.00th=[ 430], 99.50th=[ 435], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] bw ( KiB/s): min= 30, max= 159, per=26.40%, avg=83.70, stdev=35.15, samples=154 iops : min= 1, max= 9, avg= 4.45, stdev= 2.28, samples=154 lat (msec) : 10=0.65%, 20=12.50%, 50=22.40%, 100=16.54%, 250=42.84% lat (msec) : 500=4.95%, 750=0.13% cpu : usr=0.04%, sys=1.25%, ctx=1362, 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=145728: Fri Aug 14 20:47:27 2026 read: IOPS=5, BW=84.8KiB/s (86.8kB/s)(6256KiB/73773msec) clat (msec): min=7, max=299, avg=36.62, stdev=36.02 lat (msec): min=7, max=299, avg=36.62, stdev=36.02 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 46], 90.00th=[ 71], 95.00th=[ 116], | 99.00th=[ 201], 99.50th=[ 236], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 311, per=32.07%, avg=96.52, stdev=66.34, samples=128 iops : min= 1, max= 19, avg= 5.25, stdev= 4.18, samples=128 write: IOPS=5, BW=81.8KiB/s (83.7kB/s)(6032KiB/73773msec); 0 zone resets clat (msec): min=37, max=509, avg=157.26, stdev=68.56 lat (msec): min=37, max=509, avg=157.27, stdev=68.56 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 78], 10.00th=[ 83], 20.00th=[ 103], | 30.00th=[ 118], 40.00th=[ 129], 50.00th=[ 142], 60.00th=[ 159], | 70.00th=[ 182], 80.00th=[ 205], 90.00th=[ 245], 95.00th=[ 292], | 99.00th=[ 368], 99.50th=[ 464], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 30, max= 160, per=25.83%, avg=81.89, stdev=33.82, samples=145 iops : min= 1, max= 10, avg= 4.33, stdev= 2.19, samples=145 lat (msec) : 10=1.82%, 20=16.02%, 50=24.09%, 100=15.10%, 250=38.15% lat (msec) : 500=4.69%, 750=0.13% cpu : usr=0.05%, sys=1.39%, ctx=1391, 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=145729: Fri Aug 14 20:47:27 2026 read: IOPS=4, BW=77.3KiB/s (79.1kB/s)(6032KiB/78064msec) clat (msec): min=8, max=275, avg=39.71, stdev=37.96 lat (msec): min=8, max=275, avg=39.71, stdev=37.96 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 18], | 30.00th=[ 21], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 36], 80.00th=[ 50], 90.00th=[ 95], 95.00th=[ 122], | 99.00th=[ 205], 99.50th=[ 253], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 30, max= 254, per=30.41%, avg=91.55, stdev=55.51, samples=128 iops : min= 1, max= 15, avg= 4.96, stdev= 3.54, samples=128 write: IOPS=5, BW=80.1KiB/s (82.1kB/s)(6256KiB/78064msec); 0 zone resets clat (msec): min=56, max=518, avg=160.18, stdev=71.67 lat (msec): min=56, max=518, avg=160.21, stdev=71.71 clat percentiles (msec): | 1.00th=[ 64], 5.00th=[ 78], 10.00th=[ 87], 20.00th=[ 102], | 30.00th=[ 116], 40.00th=[ 131], 50.00th=[ 146], 60.00th=[ 161], | 70.00th=[ 178], 80.00th=[ 205], 90.00th=[ 253], 95.00th=[ 313], | 99.00th=[ 372], 99.50th=[ 472], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 30, max= 160, per=25.60%, avg=81.16, stdev=33.16, samples=151 iops : min= 1, max= 10, avg= 4.28, stdev= 2.17, samples=151 lat (msec) : 10=1.30%, 20=13.41%, 50=24.74%, 100=14.32%, 250=40.36% lat (msec) : 500=5.73%, 750=0.13% cpu : usr=0.05%, sys=1.32%, ctx=1382, 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=301KiB/s (309kB/s), 72.3KiB/s-84.8KiB/s (74.0kB/s-86.8kB/s), io=23.4MiB (24.5MB), run=73773-79463msec WRITE: bw=317KiB/s (325kB/s), 80.1KiB/s-82.4KiB/s (82.1kB/s-84.3kB/s), io=24.6MiB (25.8MB), run=73773-79463msec 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=145754: Fri Aug 14 20:47:49 2026 read: IOPS=1, BW=1455KiB/s (1489kB/s)(7168KiB/4928msec) clat (msec): min=200, max=401, avg=286.73, stdev=80.16 lat (msec): min=200, max=401, avg=286.73, stdev=80.16 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 236], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 253], 60.00th=[ 275], | 70.00th=[ 275], 80.00th=[ 397], 90.00th=[ 401], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 1954, max= 4039, per=100.00%, avg=2958.00, stdev=1125.66, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1039KiB/s (1064kB/s)(5120KiB/4928msec); 0 zone resets clat (msec): min=194, max=782, avg=520.37, stdev=245.85 lat (msec): min=194, max=783, avg=520.52, stdev=245.93 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 194], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 684], 80.00th=[ 684], 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= 1954, max= 2019, per=57.08%, avg=1990.40, stdev=32.17, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=10.82%, ctx=225, 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=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=145755: Fri Aug 14 20:47:49 2026 read: IOPS=0, BW=469KiB/s (480kB/s)(2048KiB/4366msec) clat (msec): min=20, max=416, avg=218.47, stdev=280.08 lat (msec): min=20, max=416, avg=218.48, stdev=280.08 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 21], 10.00th=[ 21], 20.00th=[ 21], | 30.00th=[ 21], 40.00th=[ 21], 50.00th=[ 21], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 1630, max= 2039, per=73.67%, avg=1834.50, stdev=289.21, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2345KiB/s (2402kB/s)(10.0MiB/4366msec); 0 zone resets clat (msec): min=152, max=1231, avg=371.20, stdev=318.52 lat (msec): min=152, max=1231, avg=372.06, stdev=318.69 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 157], | 30.00th=[ 201], 40.00th=[ 234], 50.00th=[ 259], 60.00th=[ 288], | 70.00th=[ 313], 80.00th=[ 430], 90.00th=[ 447], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 1957, max= 4079, per=100.00%, avg=3580.40, stdev=912.87, samples=5 iops : min= 1, max= 3, avg= 2.60, stdev= 0.89, samples=5 lat (msec) : 50=8.33%, 250=33.33%, 500=50.00%, 2000=8.33% cpu : usr=0.00%, sys=12.19%, ctx=155, 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=145756: Fri Aug 14 20:47:49 2026 read: IOPS=0, BW=747KiB/s (765kB/s)(6144KiB/8222msec) clat (usec): min=448, max=5208.1k, avg=868690.60, stdev=2125846.02 lat (usec): min=449, max=5208.1k, avg=868691.80, stdev=2125846.06 clat percentiles (usec): | 1.00th=[ 449], 5.00th=[ 449], 10.00th=[ 449], | 20.00th=[ 478], 30.00th=[ 478], 40.00th=[ 486], | 50.00th=[ 486], 60.00th=[ 824], 70.00th=[ 1860], | 80.00th=[ 1860], 90.00th=[5200937], 95.00th=[5200937], | 99.00th=[5200937], 99.50th=[5200937], 99.90th=[5200937], | 99.95th=[5200937], 99.99th=[5200937] bw ( KiB/s): min= 4031, max= 6144, per=100.00%, avg=5087.50, stdev=1494.12, samples=2 iops : min= 3, max= 6, avg= 4.50, stdev= 2.12, samples=2 write: IOPS=0, BW=747KiB/s (765kB/s)(6144KiB/8222msec); 0 zone resets clat (msec): min=112, max=1541, avg=436.38, stdev=548.53 lat (msec): min=112, max=1541, avg=436.43, stdev=548.53 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 112], 10.00th=[ 112], 20.00th=[ 133], | 30.00th=[ 133], 40.00th=[ 203], 50.00th=[ 203], 60.00th=[ 296], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 2015, max= 4039, per=72.71%, avg=2535.25, stdev=1002.60, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 500=25.00%, 1000=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=16.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=6.70%, ctx=462, 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=145758: Fri Aug 14 20:47:49 2026 read: IOPS=1, BW=1068KiB/s (1094kB/s)(5120KiB/4792msec) clat (usec): min=475, max=460585, avg=185347.67, stdev=193957.66 lat (usec): min=477, max=460585, avg=185348.81, stdev=193957.29 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[ 478], | 30.00th=[ 799], 40.00th=[ 799], 50.00th=[200279], 60.00th=[200279], | 70.00th=[265290], 80.00th=[265290], 90.00th=[459277], 95.00th=[459277], | 99.00th=[459277], 99.50th=[459277], 99.90th=[459277], 99.95th=[459277], | 99.99th=[459277] bw ( KiB/s): min= 2039, max= 6023, per=100.00%, avg=4031.00, stdev=2817.11, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1496KiB/s (1532kB/s)(7168KiB/4792msec); 0 zone resets clat (msec): min=162, max=1514, avg=540.82, stdev=488.33 lat (msec): min=162, max=1514, avg=540.98, stdev=488.32 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 192], | 30.00th=[ 226], 40.00th=[ 226], 50.00th=[ 292], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 751], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 1535, max= 4039, per=81.97%, avg=2858.25, stdev=1257.15, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (usec) : 500=8.33%, 1000=8.33% lat (msec) : 250=33.33%, 500=25.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=9.79%, ctx=131, 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=2491KiB/s (2551kB/s), 469KiB/s-1455KiB/s (480kB/s-1489kB/s), io=20.0MiB (20.0MB), run=4366-8222msec WRITE: bw=3487KiB/s (3571kB/s), 747KiB/s-2345KiB/s (765kB/s-2402kB/s), io=28.0MiB (29.4MB), run=4366-8222msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145753: Fri Aug 14 20:47:50 2026 read: IOPS=1, BW=1631KiB/s (1670kB/s)(7168KiB/4394msec) clat (msec): min=90, max=469, avg=264.50, stdev=141.60 lat (msec): min=90, max=469, avg=264.50, stdev=141.60 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 167], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 220], 60.00th=[ 262], | 70.00th=[ 262], 80.00th=[ 443], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 1988, max= 3849, per=100.00%, avg=2701.50, stdev=875.80, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1165KiB/s (1193kB/s)(5120KiB/4394msec); 0 zone resets clat (msec): min=321, max=767, avg=488.26, stdev=173.02 lat (msec): min=321, max=774, avg=492.64, stdev=174.30 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 409], 40.00th=[ 409], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 531], 80.00th=[ 531], 90.00th=[ 768], 95.00th=[ 768], | 99.00th=[ 768], 99.50th=[ 768], 99.90th=[ 768], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 1924, max= 3900, per=80.10%, avg=2472.75, stdev=952.97, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.02%, sys=3.32%, ctx=54, 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=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=145757: Fri Aug 14 20:47:50 2026 read: IOPS=0, BW=221KiB/s (226kB/s)(2048KiB/9285msec) clat (msec): min=87, max=510, avg=298.80, stdev=299.40 lat (msec): min=87, max=510, avg=298.80, stdev=299.40 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 88], | 30.00th=[ 88], 40.00th=[ 88], 50.00th=[ 88], 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= 2031, max= 2048, per=92.49%, avg=2039.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1103KiB/s (1129kB/s)(10.0MiB/9285msec); 0 zone resets clat (msec): min=123, max=4127, avg=841.52, stdev=1255.92 lat (msec): min=123, max=4127, avg=841.69, stdev=1255.92 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 124], 10.00th=[ 124], 20.00th=[ 140], | 30.00th=[ 146], 40.00th=[ 184], 50.00th=[ 186], 60.00th=[ 275], | 70.00th=[ 667], 80.00th=[ 902], 90.00th=[ 1670], 95.00th=[ 4111], | 99.00th=[ 4111], 99.50th=[ 4111], 99.90th=[ 4111], 99.95th=[ 4111], | 99.99th=[ 4111] bw ( KiB/s): min= 1950, max= 4063, per=78.44%, avg=2421.40, stdev=918.42, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=8.33%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=1.45%, ctx=77, 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=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=145759: Fri Aug 14 20:47:50 2026 read: IOPS=0, BW=677KiB/s (693kB/s)(6144KiB/9075msec) clat (msec): min=145, max=4091, avg=889.23, stdev=1574.10 lat (msec): min=145, max=4091, avg=889.23, stdev=1574.10 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 171], 50.00th=[ 171], 60.00th=[ 275], | 70.00th=[ 485], 80.00th=[ 485], 90.00th=[ 4077], 95.00th=[ 4077], | 99.00th=[ 4077], 99.50th=[ 4077], 99.90th=[ 4077], 99.95th=[ 4077], | 99.99th=[ 4077] bw ( KiB/s): min= 1950, max= 4063, per=100.00%, avg=2507.00, stdev=1037.81, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=677KiB/s (693kB/s)(6144KiB/9075msec); 0 zone resets clat (msec): min=185, max=1241, avg=550.76, stdev=394.12 lat (msec): min=185, max=1242, avg=550.84, stdev=394.11 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 558], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 1950, max= 3849, per=80.00%, avg=2469.50, stdev=920.66, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.22%, ctx=84, 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=145760: Fri Aug 14 20:47:50 2026 read: IOPS=0, BW=870KiB/s (891kB/s)(5120KiB/5882msec) clat (msec): min=153, max=364, avg=248.05, stdev=86.26 lat (msec): min=153, max=364, avg=248.05, stdev=86.27 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 155], | 30.00th=[ 203], 40.00th=[ 203], 50.00th=[ 211], 60.00th=[ 211], | 70.00th=[ 309], 80.00th=[ 309], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 2035, max= 3900, per=100.00%, avg=2661.00, stdev=1073.03, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1219KiB/s (1248kB/s)(7168KiB/5882msec); 0 zone resets clat (msec): min=290, max=1696, avg=629.48, stdev=500.81 lat (msec): min=290, max=1696, avg=629.57, stdev=500.79 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 464], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 760], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 1950, max= 3976, per=76.00%, avg=2346.00, stdev=799.37, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 0.82, samples=6 lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.10%, ctx=132, 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=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=2206KiB/s (2259kB/s), 221KiB/s-1631KiB/s (226kB/s-1670kB/s), io=20.0MiB (20.0MB), run=4394-9285msec WRITE: bw=3088KiB/s (3162kB/s), 677KiB/s-1219KiB/s (693kB/s-1248kB/s), io=28.0MiB (29.4MB), run=4394-9285msec 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=145768: Fri Aug 14 20:48:09 2026 read: IOPS=0, BW=2889KiB/s (2958kB/s)(12.0MiB/4254msec) clat (msec): min=1016, max=1778, avg=1397.55, stdev=380.64 lat (msec): min=1016, max=1778, avg=1397.55, stdev=380.64 clat percentiles (msec): | 1.00th=[ 1020], 5.00th=[ 1020], 10.00th=[ 1020], 20.00th=[ 1020], | 30.00th=[ 1020], 40.00th=[ 1401], 50.00th=[ 1401], 60.00th=[ 1401], | 70.00th=[ 1770], 80.00th=[ 1770], 90.00th=[ 1770], 95.00th=[ 1770], | 99.00th=[ 1770], 99.50th=[ 1770], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8015, max= 8062, per=100.00%, avg=8038.50, stdev=33.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.00%, sys=2.42%, ctx=38, 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=145769: Fri Aug 14 20:48:09 2026 read: IOPS=0, BW=821KiB/s (841kB/s)(4096KiB/4988msec) clat (nsec): min=1516.3M, max=1516.3M, avg=1516302611.00, stdev= 0.00 lat (nsec): min=1516.3M, max=1516.3M, avg=1516305478.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1519], 5.00th=[ 1519], 10.00th=[ 1519], 20.00th=[ 1519], | 30.00th=[ 1519], 40.00th=[ 1519], 50.00th=[ 1519], 60.00th=[ 1519], | 70.00th=[ 1519], 80.00th=[ 1519], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1642KiB/s (1682kB/s)(8192KiB/4988msec); 0 zone resets clat (msec): min=1313, max=2038, avg=1676.11, stdev=512.84 lat (msec): min=1313, max=2039, avg=1676.48, stdev=512.89 clat percentiles (msec): | 1.00th=[ 1318], 5.00th=[ 1318], 10.00th=[ 1318], 20.00th=[ 1318], | 30.00th=[ 1318], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 2039], | 70.00th=[ 2039], 80.00th=[ 2039], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=2.25%, 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=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=145771: Fri Aug 14 20:48:09 2026 write: IOPS=1, BW=4611KiB/s (4722kB/s)(12.0MiB/2665msec); 0 zone resets clat (msec): min=438, max=1365, avg=798.47, stdev=496.87 lat (msec): min=439, max=1365, avg=815.19, stdev=487.39 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 1368], 80.00th=[ 1368], 90.00th=[ 1368], 95.00th=[ 1368], | 99.00th=[ 1368], 99.50th=[ 1368], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 8094, max= 8159, per=100.00%, avg=8126.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.04%, sys=5.26%, ctx=57, 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=145774: Fri Aug 14 20:48:09 2026 write: IOPS=1, BW=4577KiB/s (4686kB/s)(12.0MiB/2685msec); 0 zone resets clat (msec): min=538, max=1272, avg=860.87, stdev=374.86 lat (msec): min=539, max=1272, avg=861.27, stdev=374.85 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 5649, max= 8126, per=100.00%, avg=6887.50, stdev=1751.50, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.26%, sys=5.40%, ctx=46, 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 Run status group 0 (all jobs): READ: bw=3285KiB/s (3364kB/s), 821KiB/s-2889KiB/s (841kB/s-2958kB/s), io=16.0MiB (16.8MB), run=4254-4988msec WRITE: bw=6569KiB/s (6727kB/s), 1642KiB/s-4611KiB/s (1682kB/s-4722kB/s), io=32.0MiB (33.6MB), run=2665-4988msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145770: Fri Aug 14 20:48:09 2026 read: IOPS=0, BW=3622KiB/s (3708kB/s)(12.0MiB/3393msec) clat (msec): min=975, max=1080, avg=1028.80, stdev=52.42 lat (msec): min=975, max=1080, avg=1028.80, stdev=52.42 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 1028], 50.00th=[ 1028], 60.00th=[ 1028], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8047, max= 8143, per=100.00%, avg=8095.00, stdev=67.88, 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=11.56%, ctx=200, 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=145772: Fri Aug 14 20:48:09 2026 read: IOPS=0, BW=956KiB/s (979kB/s)(4096KiB/4283msec) clat (nsec): min=1204.4M, max=1204.4M, avg=1204358769.00, stdev= 0.00 lat (nsec): min=1204.4M, max=1204.4M, avg=1204361938.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1200], 5.00th=[ 1200], 10.00th=[ 1200], 20.00th=[ 1200], | 30.00th=[ 1200], 40.00th=[ 1200], 50.00th=[ 1200], 60.00th=[ 1200], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] 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=1913KiB/s (1959kB/s)(8192KiB/4283msec); 0 zone resets clat (msec): min=1307, max=1644, avg=1475.91, stdev=237.92 lat (msec): min=1307, max=1646, avg=1477.32, stdev=239.61 clat percentiles (msec): | 1.00th=[ 1301], 5.00th=[ 1301], 10.00th=[ 1301], 20.00th=[ 1301], | 30.00th=[ 1301], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1636], | 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= 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=100.00% cpu : usr=0.07%, sys=4.23%, ctx=102, 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=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=145773: Fri Aug 14 20:48:09 2026 write: IOPS=0, BW=2393KiB/s (2450kB/s)(12.0MiB/5136msec); 0 zone resets clat (msec): min=1108, max=2374, avg=1678.97, stdev=642.30 lat (msec): min=1108, max=2376, avg=1679.86, stdev=643.14 clat percentiles (msec): | 1.00th=[ 1116], 5.00th=[ 1116], 10.00th=[ 1116], 20.00th=[ 1116], | 30.00th=[ 1116], 40.00th=[ 1552], 50.00th=[ 1552], 60.00th=[ 1552], | 70.00th=[ 2366], 80.00th=[ 2366], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 8143, max= 8175, per=100.00%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.16%, sys=2.55%, ctx=66, 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=145775: Fri Aug 14 20:48:09 2026 write: IOPS=0, BW=2448KiB/s (2507kB/s)(12.0MiB/5020msec); 0 zone resets clat (msec): min=500, max=3099, avg=1588.52, stdev=1350.36 lat (msec): min=502, max=3100, avg=1589.40, stdev=1350.14 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 3104], 80.00th=[ 3104], 90.00th=[ 3104], 95.00th=[ 3104], | 99.00th=[ 3104], 99.50th=[ 3104], 99.90th=[ 3104], 99.95th=[ 3104], | 99.99th=[ 3104] bw ( KiB/s): min= 8047, max= 8159, per=100.00%, avg=8103.00, stdev=79.20, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.14%, sys=2.61%, ctx=68, 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=3825KiB/s (3917kB/s), 956KiB/s-3622KiB/s (979kB/s-3708kB/s), io=16.0MiB (16.8MB), run=3393-4283msec WRITE: bw=6380KiB/s (6533kB/s), 1913KiB/s-2448KiB/s (1959kB/s-2507kB/s), io=32.0MiB (33.6MB), run=4283-5136msec