== sanity test 398b: DIO and buffer IO race ============== 06:58:23 (1787741903) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 9.53533 s, 5.3 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=179288: Wed Aug 26 07:01:48 2026 read: IOPS=8, BW=33.8KiB/s (34.6kB/s)(5992KiB/177399msec) clat (usec): min=46, max=1043.9k, avg=64259.86, stdev=51228.74 lat (usec): min=46, max=1043.9k, avg=64264.26, stdev=51231.09 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 13829], 10.00th=[ 20841], | 20.00th=[ 30540], 30.00th=[ 38011], 40.00th=[ 45351], | 50.00th=[ 53216], 60.00th=[ 62129], 70.00th=[ 76022], | 80.00th=[ 91751], 90.00th=[ 119014], 95.00th=[ 143655], | 99.00th=[ 233833], 99.50th=[ 261096], 99.90th=[ 346031], | 99.95th=[1044382], 99.99th=[1044382] bw ( KiB/s): min= 7, max= 120, per=25.17%, avg=33.72, stdev=17.44, samples=344 iops : min= 1, max= 30, avg= 7.75, stdev= 4.40, samples=344 write: IOPS=8, BW=35.5KiB/s (36.3kB/s)(6296KiB/177399msec); 0 zone resets clat (usec): min=816, max=520567, avg=51124.88, stdev=54905.56 lat (usec): min=817, max=520568, avg=51129.95, stdev=54907.27 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1303], 10.00th=[ 1516], 20.00th=[ 4948], | 30.00th=[ 11994], 40.00th=[ 23200], 50.00th=[ 36439], 60.00th=[ 49021], | 70.00th=[ 65799], 80.00th=[ 86508], 90.00th=[124257], 95.00th=[156238], | 99.00th=[233833], 99.50th=[291505], 99.90th=[383779], 99.95th=[522191], | 99.99th=[522191] bw ( KiB/s): min= 7, max= 110, per=25.36%, avg=35.51, stdev=17.96, samples=343 iops : min= 1, max= 27, avg= 8.20, stdev= 4.54, samples=343 lat (usec) : 50=0.03%, 100=1.66%, 250=0.26%, 1000=0.10% lat (msec) : 2=6.38%, 4=2.67%, 10=5.47%, 20=6.77%, 50=30.60% lat (msec) : 100=30.21%, 250=15.10%, 500=0.68%, 750=0.03%, 2000=0.03% cpu : usr=0.07%, sys=3.78%, ctx=6593, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179289: Wed Aug 26 07:01:48 2026 read: IOPS=8, BW=33.5KiB/s (34.3kB/s)(5940KiB/177359msec) clat (usec): min=43, max=877101, avg=65819.03, stdev=50972.65 lat (usec): min=44, max=877103, avg=65820.87, stdev=50972.54 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 15008], 10.00th=[ 21890], 20.00th=[ 31589], | 30.00th=[ 39060], 40.00th=[ 46924], 50.00th=[ 55313], 60.00th=[ 64750], | 70.00th=[ 77071], 80.00th=[ 93848], 90.00th=[117965], 95.00th=[147850], | 99.00th=[252707], 99.50th=[295699], 99.90th=[350225], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 7, max= 85, per=24.79%, avg=33.21, stdev=15.17, samples=346 iops : min= 1, max= 21, avg= 7.62, stdev= 3.81, samples=346 write: IOPS=8, BW=35.8KiB/s (36.7kB/s)(6348KiB/177359msec); 0 zone resets clat (usec): min=950, max=509794, avg=49714.29, stdev=53412.76 lat (usec): min=951, max=509795, avg=49725.72, stdev=53410.45 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1385], 10.00th=[ 2040], 20.00th=[ 5997], | 30.00th=[ 11863], 40.00th=[ 23200], 50.00th=[ 35390], 60.00th=[ 47449], | 70.00th=[ 60031], 80.00th=[ 83362], 90.00th=[120062], 95.00th=[152044], | 99.00th=[233833], 99.50th=[252707], 99.90th=[509608], 99.95th=[509608], | 99.99th=[509608] bw ( KiB/s): min= 7, max= 119, per=25.69%, avg=35.96, stdev=19.70, samples=342 iops : min= 1, max= 29, avg= 8.32, stdev= 4.96, samples=342 lat (usec) : 50=0.10%, 100=1.43%, 250=0.23%, 500=0.07%, 1000=0.07% lat (msec) : 2=5.05%, 4=3.29%, 10=6.12%, 20=6.77%, 50=30.21% lat (msec) : 100=31.09%, 250=14.81%, 500=0.68%, 750=0.07%, 1000=0.03% cpu : usr=0.09%, sys=3.85%, ctx=6557, 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=179290: Wed Aug 26 07:01:48 2026 read: IOPS=8, BW=34.5KiB/s (35.3kB/s)(6028KiB/174887msec) clat (usec): min=37, max=507065, avg=64646.66, stdev=47720.50 lat (usec): min=37, max=507099, avg=64653.36, stdev=47720.92 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 11600], 10.00th=[ 21103], 20.00th=[ 29754], | 30.00th=[ 38011], 40.00th=[ 45351], 50.00th=[ 53740], 60.00th=[ 62129], | 70.00th=[ 74974], 80.00th=[ 90702], 90.00th=[125305], 95.00th=[156238], | 99.00th=[233833], 99.50th=[254804], 99.90th=[413139], 99.95th=[505414], | 99.99th=[505414] bw ( KiB/s): min= 7, max= 88, per=25.90%, avg=34.71, stdev=15.55, samples=336 iops : min= 1, max= 22, avg= 8.00, stdev= 3.94, samples=336 write: IOPS=8, BW=35.8KiB/s (36.7kB/s)(6260KiB/174887msec); 0 zone resets clat (usec): min=1047, max=954134, avg=49021.38, stdev=56049.45 lat (usec): min=1048, max=954137, avg=49041.96, stdev=56056.96 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1336], 10.00th=[ 1762], 20.00th=[ 5276], | 30.00th=[ 10683], 40.00th=[ 21627], 50.00th=[ 34341], 60.00th=[ 45876], | 70.00th=[ 61080], 80.00th=[ 82314], 90.00th=[120062], 95.00th=[154141], | 99.00th=[219153], 99.50th=[261096], 99.90th=[346031], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 7, max= 102, per=25.61%, avg=35.85, stdev=19.66, samples=338 iops : min= 1, max= 25, avg= 8.29, stdev= 4.95, samples=338 lat (usec) : 50=0.20%, 100=1.66%, 250=0.10%, 500=0.03%, 750=0.07% lat (msec) : 2=5.63%, 4=2.90%, 10=6.45%, 20=7.10%, 50=30.34% lat (msec) : 100=29.92%, 250=15.10%, 500=0.46%, 750=0.03%, 1000=0.03% cpu : usr=0.07%, sys=3.73%, ctx=6524, 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=179291: Wed Aug 26 07:01:48 2026 read: IOPS=8, BW=33.9KiB/s (34.7kB/s)(6052KiB/178342msec) clat (usec): min=36, max=601553, avg=66080.21, stdev=46514.07 lat (usec): min=37, max=601555, avg=66082.03, stdev=46514.00 clat percentiles (usec): | 1.00th=[ 64], 5.00th=[ 16057], 10.00th=[ 23462], 20.00th=[ 32637], | 30.00th=[ 40633], 40.00th=[ 47973], 50.00th=[ 56361], 60.00th=[ 65799], | 70.00th=[ 78119], 80.00th=[ 93848], 90.00th=[115868], 95.00th=[143655], | 99.00th=[231736], 99.50th=[274727], 99.90th=[371196], 99.95th=[599786], | 99.99th=[599786] bw ( KiB/s): min= 7, max= 87, per=25.51%, avg=34.18, stdev=16.11, samples=343 iops : min= 1, max= 21, avg= 7.86, stdev= 4.06, samples=343 write: IOPS=8, BW=34.0KiB/s (35.8kB/s)(6236KiB/178342msec); 0 zone resets clat (usec): min=1009, max=995419, avg=49870.01, stdev=58012.35 lat (usec): min=1010, max=995424, avg=49872.58, stdev=58012.24 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1385], 10.00th=[ 1778], 20.00th=[ 4752], | 30.00th=[ 10945], 40.00th=[ 22152], 50.00th=[ 35390], 60.00th=[ 46400], | 70.00th=[ 61604], 80.00th=[ 87557], 90.00th=[119014], 95.00th=[154141], | 99.00th=[225444], 99.50th=[252707], 99.90th=[566232], 99.95th=[994051], | 99.99th=[994051] bw ( KiB/s): min= 7, max= 103, per=25.16%, avg=35.23, stdev=18.14, samples=343 iops : min= 1, max= 25, avg= 8.13, stdev= 4.58, samples=343 lat (usec) : 50=0.10%, 100=1.53%, 250=0.03%, 750=0.03% lat (msec) : 2=5.92%, 4=3.61%, 10=5.18%, 20=6.32%, 50=29.95% lat (msec) : 100=31.18%, 250=15.49%, 500=0.55%, 750=0.07%, 1000=0.03% cpu : usr=0.07%, sys=3.63%, ctx=6492, 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=135KiB/s (138kB/s), 33.5KiB/s-34.5KiB/s (34.3kB/s-35.3kB/s), io=23.4MiB (24.6MB), run=174887-178342msec WRITE: bw=141KiB/s (144kB/s), 34.0KiB/s-35.8KiB/s (35.8kB/s-36.7kB/s), io=24.6MiB (25.7MB), run=174887-178342msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179284: Wed Aug 26 07:02:39 2026 read: IOPS=6, BW=26.3KiB/s (26.0kB/s)(5992KiB/227514msec) clat (msec): min=6, max=1071, avg=60.99, stdev=65.98 lat (msec): min=6, max=1071, avg=61.00, stdev=65.98 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 40], 60.00th=[ 49], | 70.00th=[ 63], 80.00th=[ 85], 90.00th=[ 132], 95.00th=[ 188], | 99.00th=[ 309], 99.50th=[ 368], 99.90th=[ 575], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 102, per=26.78%, avg=27.85, stdev=20.55, samples=414 iops : min= 1, max= 25, avg= 6.29, stdev= 5.18, samples=414 write: IOPS=6, BW=27.7KiB/s (28.3kB/s)(6296KiB/227514msec); 0 zone resets clat (msec): min=11, max=634, avg=86.14, stdev=63.56 lat (msec): min=11, max=634, avg=86.14, stdev=63.57 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 30], 20.00th=[ 38], | 30.00th=[ 46], 40.00th=[ 55], 50.00th=[ 66], 60.00th=[ 81], | 70.00th=[ 100], 80.00th=[ 130], 90.00th=[ 171], 95.00th=[ 215], | 99.00th=[ 300], 99.50th=[ 351], 99.90th=[ 439], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 111, per=25.90%, avg=28.23, stdev=18.59, samples=429 iops : min= 1, max= 27, avg= 6.38, stdev= 4.69, samples=429 lat (msec) : 10=0.65%, 20=9.15%, 50=38.25%, 100=29.30%, 250=20.25% lat (msec) : 500=2.28%, 750=0.10%, 2000=0.03% cpu : usr=0.05%, sys=1.36%, ctx=4782, 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=179285: Wed Aug 26 07:02:39 2026 read: IOPS=6, BW=25.9KiB/s (26.6kB/s)(5940KiB/229056msec) clat (msec): min=6, max=943, avg=62.19, stdev=63.22 lat (msec): min=6, max=943, avg=62.20, stdev=63.22 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 22], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 66], 80.00th=[ 90], 90.00th=[ 142], 95.00th=[ 186], | 99.00th=[ 296], 99.50th=[ 330], 99.90th=[ 468], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 7, max= 111, per=26.96%, avg=28.04, stdev=20.24, samples=407 iops : min= 1, max= 27, avg= 6.34, stdev= 5.11, samples=407 write: IOPS=6, BW=27.7KiB/s (28.4kB/s)(6348KiB/229056msec); 0 zone resets clat (msec): min=10, max=800, avg=85.77, stdev=71.24 lat (msec): min=10, max=800, avg=85.77, stdev=71.25 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 24], 10.00th=[ 30], 20.00th=[ 37], | 30.00th=[ 44], 40.00th=[ 53], 50.00th=[ 63], 60.00th=[ 79], | 70.00th=[ 97], 80.00th=[ 124], 90.00th=[ 169], 95.00th=[ 224], | 99.00th=[ 342], 99.50th=[ 380], 99.90th=[ 735], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 119, per=25.77%, avg=28.09, stdev=19.23, samples=433 iops : min= 1, max= 29, avg= 6.34, stdev= 4.85, samples=433 lat (msec) : 10=0.88%, 20=9.44%, 50=37.92%, 100=28.52%, 250=20.48% lat (msec) : 500=2.60%, 750=0.10%, 1000=0.07% cpu : usr=0.06%, sys=1.39%, ctx=4761, 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=179286: Wed Aug 26 07:02:39 2026 read: IOPS=6, BW=26.4KiB/s (27.0kB/s)(6028KiB/228468msec) clat (msec): min=6, max=375, avg=59.85, stdev=53.77 lat (msec): min=6, max=375, avg=59.85, stdev=53.77 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 28], 40.00th=[ 34], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 65], 80.00th=[ 86], 90.00th=[ 136], 95.00th=[ 180], | 99.00th=[ 251], 99.50th=[ 284], 99.90th=[ 355], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 7, max= 143, per=26.19%, avg=27.24, stdev=19.66, samples=426 iops : min= 1, max= 35, avg= 6.12, stdev= 4.94, samples=426 write: IOPS=6, BW=27.4KiB/s (28.1kB/s)(6260KiB/228468msec); 0 zone resets clat (msec): min=12, max=960, avg=87.95, stdev=73.60 lat (msec): min=12, max=960, avg=87.96, stdev=73.60 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 39], | 30.00th=[ 45], 40.00th=[ 54], 50.00th=[ 65], 60.00th=[ 79], | 70.00th=[ 99], 80.00th=[ 128], 90.00th=[ 171], 95.00th=[ 224], | 99.00th=[ 330], 99.50th=[ 384], 99.90th=[ 776], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 103, per=25.32%, avg=27.60, stdev=19.07, samples=436 iops : min= 1, max= 25, avg= 6.22, stdev= 4.82, samples=436 lat (msec) : 10=1.04%, 20=8.20%, 50=38.18%, 100=29.79%, 250=20.61% lat (msec) : 500=2.02%, 750=0.10%, 1000=0.07% cpu : usr=0.05%, sys=1.40%, ctx=4744, 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=179287: Wed Aug 26 07:02:39 2026 read: IOPS=6, BW=26.5KiB/s (27.1kB/s)(6052KiB/228763msec) clat (msec): min=4, max=574, avg=62.20, stdev=61.97 lat (msec): min=4, max=574, avg=62.20, stdev=61.97 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 27], 40.00th=[ 33], 50.00th=[ 41], 60.00th=[ 51], | 70.00th=[ 64], 80.00th=[ 91], 90.00th=[ 148], 95.00th=[ 192], | 99.00th=[ 288], 99.50th=[ 368], 99.90th=[ 477], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 143, per=27.02%, avg=28.10, stdev=20.05, samples=415 iops : min= 1, max= 35, avg= 6.35, stdev= 5.05, samples=415 write: IOPS=6, BW=27.3KiB/s (27.9kB/s)(6236KiB/228763msec); 0 zone resets clat (msec): min=11, max=966, avg=85.97, stdev=67.47 lat (msec): min=11, max=966, avg=85.98, stdev=67.48 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 30], 20.00th=[ 37], | 30.00th=[ 45], 40.00th=[ 55], 50.00th=[ 65], 60.00th=[ 79], | 70.00th=[ 99], 80.00th=[ 125], 90.00th=[ 176], 95.00th=[ 215], | 99.00th=[ 313], 99.50th=[ 351], 99.90th=[ 584], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7, max= 103, per=25.76%, avg=28.08, stdev=18.76, samples=428 iops : min= 1, max= 25, avg= 6.34, stdev= 4.73, samples=428 lat (msec) : 10=0.94%, 20=8.92%, 50=37.53%, 100=29.33%, 250=20.96% lat (msec) : 500=2.21%, 750=0.07%, 1000=0.03% cpu : usr=0.05%, sys=1.28%, ctx=4741, 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=105KiB/s (107kB/s), 25.9KiB/s-26.5KiB/s (26.6kB/s-27.1kB/s), io=23.4MiB (24.6MB), run=227514-229056msec WRITE: bw=110KiB/s (112kB/s), 27.3KiB/s-27.7KiB/s (27.9kB/s-28.4kB/s), io=24.6MiB (25.7MB), run=227514-229056msec 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=179350: Wed Aug 26 07:03:30 2026 read: IOPS=8, BW=144KiB/s (147kB/s)(5920KiB/41164msec) clat (usec): min=41, max=317939, avg=55923.17, stdev=39375.78 lat (usec): min=42, max=317940, avg=55929.21, stdev=39373.85 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 77], 10.00th=[ 126], 20.00th=[ 28705], | 30.00th=[ 35390], 40.00th=[ 41681], 50.00th=[ 50070], 60.00th=[ 57934], | 70.00th=[ 68682], 80.00th=[ 82314], 90.00th=[ 99091], 95.00th=[126354], | 99.00th=[193987], 99.50th=[219153], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 31, max= 252, per=24.66%, avg=143.30, stdev=51.36, samples=81 iops : min= 1, max= 15, avg= 8.15, stdev= 3.27, samples=81 write: IOPS=9, BW=155KiB/s (158kB/s)(6368KiB/41164msec); 0 zone resets clat (usec): min=1359, max=270782, avg=50270.50, stdev=46431.31 lat (usec): min=1360, max=270782, avg=50273.29, stdev=46431.19 clat percentiles (usec): | 1.00th=[ 1647], 5.00th=[ 2073], 10.00th=[ 4555], 20.00th=[ 9765], | 30.00th=[ 16188], 40.00th=[ 28443], 50.00th=[ 38011], 60.00th=[ 49546], | 70.00th=[ 63177], 80.00th=[ 87557], 90.00th=[113771], 95.00th=[139461], | 99.00th=[202376], 99.50th=[233833], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 383, per=25.85%, avg=158.19, stdev=72.74, samples=79 iops : min= 1, max= 23, avg= 9.09, stdev= 4.60, samples=79 lat (usec) : 50=0.39%, 100=4.04%, 250=0.78% lat (msec) : 2=1.69%, 4=3.12%, 10=5.60%, 20=8.59%, 50=31.12% lat (msec) : 100=32.42%, 250=11.98%, 500=0.26% cpu : usr=0.07%, sys=4.32%, ctx=1682, 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=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=179351: Wed Aug 26 07:03:30 2026 read: IOPS=8, BW=140KiB/s (143kB/s)(5744KiB/41102msec) clat (usec): min=49, max=369843, avg=60264.25, stdev=40416.75 lat (usec): min=49, max=369844, avg=60272.38, stdev=40411.21 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 77], 10.00th=[ 20841], 20.00th=[ 31851], | 30.00th=[ 38011], 40.00th=[ 46400], 50.00th=[ 56886], 60.00th=[ 63701], | 70.00th=[ 72877], 80.00th=[ 86508], 90.00th=[106431], 95.00th=[121111], | 99.00th=[168821], 99.50th=[258999], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 31, max= 318, per=24.01%, avg=139.47, stdev=59.56, samples=81 iops : min= 1, max= 19, avg= 7.90, stdev= 3.74, samples=81 write: IOPS=9, BW=159KiB/s (163kB/s)(6544KiB/41102msec); 0 zone resets clat (usec): min=1471, max=312926, avg=46744.73, stdev=44870.26 lat (usec): min=1472, max=312928, avg=46748.45, stdev=44872.01 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 2245], 10.00th=[ 3523], 20.00th=[ 7701], | 30.00th=[ 15008], 40.00th=[ 25822], 50.00th=[ 34866], 60.00th=[ 46924], | 70.00th=[ 57934], 80.00th=[ 78119], 90.00th=[103285], 95.00th=[135267], | 99.00th=[193987], 99.50th=[198181], 99.90th=[312476], 99.95th=[312476], | 99.99th=[312476] bw ( KiB/s): min= 31, max= 316, per=26.24%, avg=160.59, stdev=67.60, samples=80 iops : min= 1, max= 19, avg= 9.24, stdev= 4.29, samples=80 lat (usec) : 50=0.13%, 100=2.73%, 250=0.26%, 500=0.13% lat (msec) : 2=1.82%, 4=4.56%, 10=7.03%, 20=6.51%, 50=30.21% lat (msec) : 100=34.51%, 250=11.72%, 500=0.39% cpu : usr=0.06%, sys=4.32%, ctx=1704, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179352: Wed Aug 26 07:03:30 2026 read: IOPS=9, BW=155KiB/s (158kB/s)(6256KiB/40419msec) clat (usec): min=50, max=218999, avg=60594.07, stdev=36701.17 lat (usec): min=51, max=219001, avg=60595.61, stdev=36701.18 clat percentiles (usec): | 1.00th=[ 61], 5.00th=[ 83], 10.00th=[ 22938], 20.00th=[ 32900], | 30.00th=[ 40109], 40.00th=[ 46924], 50.00th=[ 53740], 60.00th=[ 64226], | 70.00th=[ 72877], 80.00th=[ 87557], 90.00th=[107480], 95.00th=[131597], | 99.00th=[179307], 99.50th=[189793], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 31, max= 315, per=26.70%, avg=155.14, stdev=58.52, samples=79 iops : min= 1, max= 19, avg= 8.89, stdev= 3.69, samples=79 write: IOPS=9, BW=149KiB/s (153kB/s)(6032KiB/40419msec); 0 zone resets clat (usec): min=1379, max=198172, avg=43969.73, stdev=41225.52 lat (usec): min=1381, max=198175, avg=43975.80, stdev=41225.92 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2147], 10.00th=[ 3687], 20.00th=[ 8094], | 30.00th=[ 14091], 40.00th=[ 22152], 50.00th=[ 30802], 60.00th=[ 42730], | 70.00th=[ 57410], 80.00th=[ 72877], 90.00th=[106431], 95.00th=[132645], | 99.00th=[175113], 99.50th=[193987], 99.90th=[198181], 99.95th=[198181], | 99.99th=[198181] bw ( KiB/s): min= 30, max= 345, per=24.03%, avg=147.09, stdev=67.97, samples=79 iops : min= 1, max= 21, avg= 8.38, stdev= 4.29, samples=79 lat (usec) : 100=3.12%, 250=0.26% lat (msec) : 2=1.69%, 4=3.52%, 10=6.51%, 20=7.29%, 50=31.77% lat (msec) : 100=33.46%, 250=12.37% cpu : usr=0.07%, sys=4.45%, ctx=1814, 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=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=179353: Wed Aug 26 07:03:30 2026 read: IOPS=10, BW=161KiB/s (165kB/s)(6032KiB/37503msec) clat (usec): min=50, max=253567, avg=54611.72, stdev=35141.74 lat (usec): min=51, max=253570, avg=54614.87, stdev=35139.16 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 75], 10.00th=[ 1123], 20.00th=[ 26084], | 30.00th=[ 35390], 40.00th=[ 43254], 50.00th=[ 52167], 60.00th=[ 60031], | 70.00th=[ 70779], 80.00th=[ 80217], 90.00th=[ 99091], 95.00th=[114820], | 99.00th=[154141], 99.50th=[193987], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 31, max= 375, per=27.75%, avg=161.25, stdev=70.21, samples=72 iops : min= 1, max= 23, avg= 9.28, stdev= 4.47, samples=72 write: IOPS=10, BW=167KiB/s (171kB/s)(6256KiB/37503msec); 0 zone resets clat (usec): min=1559, max=294999, avg=42483.66, stdev=45583.24 lat (usec): min=1561, max=295002, avg=42486.77, stdev=45583.22 clat percentiles (usec): | 1.00th=[ 1696], 5.00th=[ 2040], 10.00th=[ 3949], 20.00th=[ 6915], | 30.00th=[ 10814], 40.00th=[ 17957], 50.00th=[ 27395], 60.00th=[ 38536], | 70.00th=[ 54789], 80.00th=[ 72877], 90.00th=[ 98042], 95.00th=[117965], | 99.00th=[233833], 99.50th=[265290], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 63, max= 349, per=27.21%, avg=166.53, stdev=64.12, samples=73 iops : min= 3, max= 21, avg= 9.60, stdev= 4.03, samples=73 lat (usec) : 100=4.04%, 250=0.65%, 500=0.13% lat (msec) : 2=2.60%, 4=2.99%, 10=8.98%, 20=8.59%, 50=29.69% lat (msec) : 100=32.81%, 250=9.11%, 500=0.39% cpu : usr=0.08%, sys=4.59%, ctx=1697, majf=0, minf=18 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=582KiB/s (596kB/s), 140KiB/s-161KiB/s (143kB/s-165kB/s), io=23.4MiB (24.5MB), run=37503-41164msec WRITE: bw=612KiB/s (627kB/s), 149KiB/s-167KiB/s (153kB/s-171kB/s), io=24.6MiB (25.8MB), run=37503-41164msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179354: Wed Aug 26 07:03:44 2026 read: IOPS=6, BW=110KiB/s (112kB/s)(5920KiB/53946msec) clat (msec): min=8, max=317, avg=55.54, stdev=47.12 lat (msec): min=8, max=317, avg=55.54, stdev=47.12 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 23], | 30.00th=[ 28], 40.00th=[ 33], 50.00th=[ 41], 60.00th=[ 48], | 70.00th=[ 59], 80.00th=[ 80], 90.00th=[ 117], 95.00th=[ 161], | 99.00th=[ 222], 99.50th=[ 271], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 31, max= 445, per=26.20%, avg=115.03, stdev=79.94, samples=100 iops : min= 1, max= 27, avg= 6.40, stdev= 5.08, samples=100 write: IOPS=7, BW=118KiB/s (121kB/s)(6368KiB/53946msec); 0 zone resets clat (msec): min=14, max=381, avg=83.09, stdev=55.41 lat (msec): min=14, max=381, avg=83.09, stdev=55.41 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 29], 20.00th=[ 37], | 30.00th=[ 47], 40.00th=[ 58], 50.00th=[ 70], 60.00th=[ 82], | 70.00th=[ 100], 80.00th=[ 120], 90.00th=[ 159], 95.00th=[ 192], | 99.00th=[ 271], 99.50th=[ 292], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 29, max= 447, per=25.63%, avg=118.39, stdev=70.67, samples=105 iops : min= 1, max= 27, avg= 6.60, stdev= 4.46, samples=105 lat (msec) : 10=0.39%, 20=8.85%, 50=37.63%, 100=31.38%, 250=20.70% lat (msec) : 500=1.04% cpu : usr=0.06%, sys=1.51%, ctx=1195, 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=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=179355: Wed Aug 26 07:03:44 2026 read: IOPS=6, BW=106KiB/s (108kB/s)(5744KiB/54441msec) clat (msec): min=7, max=334, avg=59.76, stdev=54.14 lat (msec): min=7, max=334, avg=59.76, stdev=54.14 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 21], | 30.00th=[ 28], 40.00th=[ 34], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 66], 80.00th=[ 95], 90.00th=[ 129], 95.00th=[ 176], | 99.00th=[ 268], 99.50th=[ 317], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 29, max= 478, per=25.78%, avg=113.17, stdev=82.38, samples=99 iops : min= 1, max= 29, avg= 6.28, stdev= 5.19, samples=99 write: IOPS=7, BW=120KiB/s (123kB/s)(6544KiB/54441msec); 0 zone resets clat (msec): min=12, max=393, avg=79.74, stdev=52.89 lat (msec): min=12, max=393, avg=79.75, stdev=52.89 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 22], 10.00th=[ 27], 20.00th=[ 39], | 30.00th=[ 45], 40.00th=[ 58], 50.00th=[ 67], 60.00th=[ 80], | 70.00th=[ 93], 80.00th=[ 113], 90.00th=[ 150], 95.00th=[ 184], | 99.00th=[ 249], 99.50th=[ 262], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 31, max= 415, per=26.30%, avg=121.52, stdev=74.70, samples=105 iops : min= 1, max= 25, avg= 6.80, stdev= 4.75, samples=105 lat (msec) : 10=1.43%, 20=9.38%, 50=34.90%, 100=31.77%, 250=21.48% lat (msec) : 500=1.04% cpu : usr=0.04%, sys=1.35%, ctx=1183, 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=179356: Wed Aug 26 07:03:44 2026 read: IOPS=7, BW=118KiB/s (121kB/s)(6256KiB/53052msec) clat (msec): min=6, max=338, avg=57.32, stdev=47.93 lat (msec): min=6, max=338, avg=57.32, stdev=47.94 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 18], 20.00th=[ 25], | 30.00th=[ 30], 40.00th=[ 36], 50.00th=[ 43], 60.00th=[ 51], | 70.00th=[ 60], 80.00th=[ 79], 90.00th=[ 126], 95.00th=[ 153], | 99.00th=[ 266], 99.50th=[ 292], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 29, max= 320, per=27.13%, avg=119.09, stdev=69.50, samples=102 iops : min= 1, max= 20, avg= 6.64, stdev= 4.40, samples=102 write: IOPS=7, BW=114KiB/s (116kB/s)(6032KiB/53052msec); 0 zone resets clat (msec): min=14, max=392, avg=81.03, stdev=54.19 lat (msec): min=14, max=392, avg=81.04, stdev=54.19 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 23], 10.00th=[ 29], 20.00th=[ 37], | 30.00th=[ 48], 40.00th=[ 55], 50.00th=[ 65], 60.00th=[ 80], | 70.00th=[ 100], 80.00th=[ 118], 90.00th=[ 157], 95.00th=[ 190], | 99.00th=[ 266], 99.50th=[ 300], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 30, max= 509, per=24.20%, avg=111.79, stdev=68.11, samples=103 iops : min= 1, max= 31, avg= 6.18, stdev= 4.32, samples=103 lat (msec) : 10=1.04%, 20=7.55%, 50=37.37%, 100=32.29%, 250=20.57% lat (msec) : 500=1.17% cpu : usr=0.04%, sys=1.43%, ctx=1189, 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=179357: Wed Aug 26 07:03:44 2026 read: IOPS=7, BW=112KiB/s (115kB/s)(6032KiB/53754msec) clat (msec): min=7, max=226, avg=59.03, stdev=45.74 lat (msec): min=7, max=226, avg=59.03, stdev=45.74 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 17], 20.00th=[ 24], | 30.00th=[ 31], 40.00th=[ 37], 50.00th=[ 45], 60.00th=[ 54], | 70.00th=[ 64], 80.00th=[ 90], 90.00th=[ 136], 95.00th=[ 161], | 99.00th=[ 199], 99.50th=[ 222], 99.90th=[ 226], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 30, max= 480, per=26.11%, avg=114.62, stdev=75.38, samples=103 iops : min= 1, max= 30, avg= 6.36, stdev= 4.79, samples=103 write: IOPS=7, BW=116KiB/s (119kB/s)(6256KiB/53754msec); 0 zone resets clat (msec): min=11, max=421, avg=79.46, stdev=56.91 lat (msec): min=11, max=421, avg=79.46, stdev=56.91 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 22], 10.00th=[ 26], 20.00th=[ 37], | 30.00th=[ 44], 40.00th=[ 53], 50.00th=[ 64], 60.00th=[ 77], | 70.00th=[ 97], 80.00th=[ 117], 90.00th=[ 150], 95.00th=[ 180], | 99.00th=[ 275], 99.50th=[ 363], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 31, max= 478, per=25.42%, avg=117.45, stdev=79.03, samples=105 iops : min= 1, max= 29, avg= 6.54, stdev= 4.98, samples=105 lat (msec) : 10=1.04%, 20=7.94%, 50=38.02%, 100=30.21%, 250=21.88% lat (msec) : 500=0.91% cpu : usr=0.06%, sys=1.45%, ctx=1148, 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=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=440KiB/s (451kB/s), 106KiB/s-118KiB/s (108kB/s-121kB/s), io=23.4MiB (24.5MB), run=53052-54441msec WRITE: bw=463KiB/s (474kB/s), 114KiB/s-120KiB/s (116kB/s-123kB/s), io=24.6MiB (25.8MB), run=53052-54441msec 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=179373: Wed Aug 26 07:04:00 2026 read: IOPS=1, BW=1926KiB/s (1972kB/s)(7168KiB/3722msec) clat (usec): min=789, max=812442, avg=234105.81, stdev=280428.27 lat (usec): min=789, max=812444, avg=234107.37, stdev=280428.32 clat percentiles (usec): | 1.00th=[ 791], 5.00th=[ 791], 10.00th=[ 791], 20.00th=[ 807], | 30.00th=[ 85459], 40.00th=[ 85459], 50.00th=[196084], 60.00th=[238027], | 70.00th=[238027], 80.00th=[304088], 90.00th=[809501], 95.00th=[809501], | 99.00th=[809501], 99.50th=[809501], 99.90th=[809501], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 2035, max= 3878, per=69.91%, avg=2728.00, stdev=878.42, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1376KiB/s (1409kB/s)(5120KiB/3722msec); 0 zone resets clat (msec): min=201, max=688, avg=412.18, stdev=196.27 lat (msec): min=201, max=688, avg=412.31, stdev=196.24 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 203], 10.00th=[ 203], 20.00th=[ 203], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 321], 60.00th=[ 321], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1946, max= 4071, per=49.21%, avg=2688.33, stdev=1198.51, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (usec) : 1000=16.67% lat (msec) : 100=8.33%, 250=25.00%, 500=25.00%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=11.96%, ctx=309, 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=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=179374: Wed Aug 26 07:04:00 2026 read: IOPS=0, BW=390KiB/s (400kB/s)(2048KiB/5248msec) clat (usec): min=876, max=695226, avg=348051.70, stdev=490979.83 lat (usec): min=878, max=695229, avg=348053.73, stdev=490980.34 clat percentiles (usec): | 1.00th=[ 873], 5.00th=[ 873], 10.00th=[ 873], 20.00th=[ 873], | 30.00th=[ 873], 40.00th=[ 873], 50.00th=[ 873], 60.00th=[692061], | 70.00th=[692061], 80.00th=[692061], 90.00th=[692061], 95.00th=[692061], | 99.00th=[692061], 99.50th=[692061], 99.90th=[692061], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 2043, max= 2048, per=52.42%, avg=2045.50, stdev= 3.54, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1951KiB/s (1998kB/s)(10.0MiB/5248msec); 0 zone resets clat (msec): min=169, max=1049, avg=439.15, stdev=255.94 lat (msec): min=169, max=1049, avg=439.28, stdev=255.93 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 232], | 30.00th=[ 266], 40.00th=[ 296], 50.00th=[ 363], 60.00th=[ 418], | 70.00th=[ 439], 80.00th=[ 542], 90.00th=[ 625], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 1939, max= 4096, per=48.93%, avg=2673.00, stdev=1068.85, samples=6 iops : min= 1, max= 4, avg= 1.83, stdev= 1.33, samples=6 lat (usec) : 1000=8.33% lat (msec) : 250=16.67%, 500=41.67%, 750=25.00%, 2000=8.33% cpu : usr=0.04%, sys=11.93%, ctx=154, 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=179375: Wed Aug 26 07:04:00 2026 read: IOPS=1, BW=1445KiB/s (1479kB/s)(6144KiB/4253msec) clat (usec): min=1427, max=768823, avg=268894.29, stdev=323023.40 lat (usec): min=1428, max=768825, avg=268895.75, stdev=323023.64 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1434], 10.00th=[ 1434], 20.00th=[ 1680], | 30.00th=[ 1680], 40.00th=[ 3163], 50.00th=[ 3163], 60.00th=[337642], | 70.00th=[501220], 80.00th=[501220], 90.00th=[767558], 95.00th=[767558], | 99.00th=[767558], 99.50th=[767558], 99.90th=[767558], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 2035, max= 3893, per=83.77%, avg=3268.67, stdev=1068.41, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1445KiB/s (1479kB/s)(6144KiB/4253msec); 0 zone resets clat (msec): min=148, max=761, avg=421.82, stdev=218.41 lat (msec): min=148, max=761, avg=421.97, stdev=218.47 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 317], 50.00th=[ 317], 60.00th=[ 489], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 1428, max= 2048, per=35.23%, avg=1924.67, stdev=246.47, samples=6 iops : min= 1, max= 2, avg= 1.33, stdev= 0.52, samples=6 lat (msec) : 2=16.67%, 4=8.33%, 250=8.33%, 500=33.33%, 750=16.67% lat (msec) : 1000=16.67% cpu : usr=0.00%, sys=9.97%, ctx=133, 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=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=179376: Wed Aug 26 07:04:00 2026 read: IOPS=1, BW=1027KiB/s (1052kB/s)(5120KiB/4984msec) clat (usec): min=1975, max=335100, avg=187512.21, stdev=124355.10 lat (usec): min=1977, max=335102, avg=187513.87, stdev=124355.02 clat percentiles (usec): | 1.00th=[ 1975], 5.00th=[ 1975], 10.00th=[ 1975], 20.00th=[ 1975], | 30.00th=[168821], 40.00th=[168821], 50.00th=[173016], 60.00th=[173016], | 70.00th=[258999], 80.00th=[258999], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 4007, max= 4087, per=100.00%, avg=4047.00, stdev=56.57, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1438KiB/s (1473kB/s)(7168KiB/4984msec); 0 zone resets clat (msec): min=162, max=1147, avg=562.32, stdev=350.13 lat (msec): min=162, max=1147, avg=562.47, stdev=350.20 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 305], | 30.00th=[ 380], 40.00th=[ 380], 50.00th=[ 397], 60.00th=[ 684], | 70.00th=[ 684], 80.00th=[ 860], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 1939, max= 4071, per=55.25%, avg=3018.25, stdev=1184.34, samples=4 iops : min= 1, max= 3, avg= 2.25, stdev= 0.96, samples=4 lat (msec) : 2=8.33%, 250=25.00%, 500=41.67%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=8.19%, ctx=204, 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=3902KiB/s (3996kB/s), 390KiB/s-1926KiB/s (400kB/s-1972kB/s), io=20.0MiB (20.0MB), run=3722-5248msec WRITE: bw=5463KiB/s (5595kB/s), 1376KiB/s-1951KiB/s (1409kB/s-1998kB/s), io=28.0MiB (29.4MB), run=3722-5248msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179378: Wed Aug 26 07:04:01 2026 read: IOPS=1, BW=1258KiB/s (1288kB/s)(7168KiB/5697msec) clat (msec): min=90, max=1434, avg=519.15, stdev=483.21 lat (msec): min=90, max=1434, avg=519.15, stdev=483.21 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 140], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 401], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 835], 90.00th=[ 1435], 95.00th=[ 1435], | 99.00th=[ 1435], 99.50th=[ 1435], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 2011, max= 2043, per=57.23%, avg=2032.33, stdev=12.04, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=0, BW=899KiB/s (920kB/s)(5120KiB/5697msec); 0 zone resets clat (msec): min=132, max=689, avg=412.10, stdev=258.91 lat (msec): min=132, max=689, avg=412.21, stdev=258.91 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 133], 10.00th=[ 133], 20.00th=[ 133], | 30.00th=[ 192], 40.00th=[ 192], 50.00th=[ 384], 60.00th=[ 384], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1984, max= 4071, per=54.24%, avg=2696.67, stdev=1190.48, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=33.33%, 500=16.67%, 750=25.00%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=2.48%, ctx=86, 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=179379: Wed Aug 26 07:04:01 2026 read: IOPS=0, BW=363KiB/s (371kB/s)(2048KiB/5647msec) clat (msec): min=102, max=458, avg=280.66, stdev=251.43 lat (msec): min=102, max=458, avg=280.67, stdev=251.43 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 104], 60.00th=[ 460], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 1756, max= 1984, per=52.66%, avg=1870.00, stdev=161.22, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1813KiB/s (1857kB/s)(10.0MiB/5647msec); 0 zone resets clat (msec): min=104, max=815, avg=503.98, stdev=199.27 lat (msec): min=105, max=815, avg=504.32, stdev=199.64 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 372], | 30.00th=[ 443], 40.00th=[ 447], 50.00th=[ 493], 60.00th=[ 523], | 70.00th=[ 527], 80.00th=[ 542], 90.00th=[ 776], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1984, max= 2043, per=40.54%, avg=2015.71, stdev=20.45, samples=7 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=7 lat (msec) : 250=16.67%, 500=41.67%, 750=25.00%, 1000=16.67% cpu : usr=0.00%, sys=5.38%, ctx=117, 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=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=179380: Wed Aug 26 07:04:01 2026 read: IOPS=1, BW=1168KiB/s (1196kB/s)(6144KiB/5260msec) clat (msec): min=164, max=600, avg=296.53, stdev=201.96 lat (msec): min=164, max=600, avg=296.53, stdev=201.96 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 169], 60.00th=[ 169], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 2035, max= 4055, per=94.93%, avg=3371.00, stdev=1157.12, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1168KiB/s (1196kB/s)(6144KiB/5260msec); 0 zone resets clat (msec): min=120, max=1532, avg=549.48, stdev=557.71 lat (msec): min=120, max=1532, avg=549.58, stdev=557.71 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 131], | 30.00th=[ 131], 40.00th=[ 163], 50.00th=[ 163], 60.00th=[ 518], | 70.00th=[ 827], 80.00th=[ 827], 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= 1523, max= 4071, per=46.91%, avg=2332.60, stdev=995.67, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=58.33%, 750=25.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.08%, sys=3.33%, 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=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=179381: Wed Aug 26 07:04:01 2026 read: IOPS=0, BW=888KiB/s (909kB/s)(5120KiB/5766msec) clat (msec): min=103, max=550, avg=217.24, stdev=188.25 lat (msec): min=103, max=550, avg=217.24, stdev=188.25 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 148], 60.00th=[ 148], | 70.00th=[ 169], 80.00th=[ 169], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1984, max= 4087, per=75.87%, avg=2694.00, stdev=1206.45, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1243KiB/s (1273kB/s)(7168KiB/5766msec); 0 zone resets clat (msec): min=333, max=1656, avg=656.31, stdev=486.05 lat (msec): min=333, max=1656, avg=656.43, stdev=486.05 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 342], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 422], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 911], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 1984, max= 4071, per=57.04%, avg=2836.00, stdev=1120.30, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=2.77%, ctx=80, 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=3552KiB/s (3637kB/s), 363KiB/s-1258KiB/s (371kB/s-1288kB/s), io=20.0MiB (20.0MB), run=5260-5766msec WRITE: bw=4973KiB/s (5092kB/s), 899KiB/s-1813KiB/s (920kB/s-1857kB/s), io=28.0MiB (29.4MB), run=5260-5766msec 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=179394: Wed Aug 26 07:04:23 2026 read: IOPS=0, BW=2955KiB/s (3025kB/s)(12.0MiB/4159msec) clat (msec): min=1284, max=1565, avg=1385.72, stdev=156.16 lat (msec): min=1284, max=1565, avg=1385.72, stdev=156.16 clat percentiles (msec): | 1.00th=[ 1284], 5.00th=[ 1284], 10.00th=[ 1284], 20.00th=[ 1284], | 30.00th=[ 1284], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 7861, max= 8015, per=100.00%, avg=7938.00, stdev=108.89, 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=7.94%, ctx=256, 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=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=179395: Wed Aug 26 07:04:23 2026 read: IOPS=0, BW=1123KiB/s (1150kB/s)(4096KiB/3648msec) clat (nsec): min=1262.6M, max=1262.6M, avg=1262553841.00, stdev= 0.00 lat (nsec): min=1262.6M, max=1262.6M, avg=1262555584.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1267], 5.00th=[ 1267], 10.00th=[ 1267], 20.00th=[ 1267], | 30.00th=[ 1267], 40.00th=[ 1267], 50.00th=[ 1267], 60.00th=[ 1267], | 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= 8015, max= 8015, per=100.00%, avg=8015.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2246KiB/s (2300kB/s)(8192KiB/3648msec); 0 zone resets clat (msec): min=457, max=1925, avg=1191.50, stdev=1037.93 lat (msec): min=458, max=1925, avg=1192.02, stdev=1037.88 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 460], 10.00th=[ 460], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 1921], | 70.00th=[ 1921], 80.00th=[ 1921], 90.00th=[ 1921], 95.00th=[ 1921], | 99.00th=[ 1921], 99.50th=[ 1921], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] 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%, 2000=66.67% cpu : usr=0.00%, sys=5.98%, 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=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=179396: Wed Aug 26 07:04:23 2026 write: IOPS=0, BW=2392KiB/s (2449kB/s)(12.0MiB/5138msec); 0 zone resets clat (msec): min=211, max=3740, avg=1711.14, stdev=1823.35 lat (msec): min=211, max=3741, avg=1712.15, stdev=1823.12 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 1183], 50.00th=[ 1183], 60.00th=[ 1183], | 70.00th=[ 3742], 80.00th=[ 3742], 90.00th=[ 3742], 95.00th=[ 3742], | 99.00th=[ 3742], 99.50th=[ 3742], 99.90th=[ 3742], 99.95th=[ 3742], | 99.99th=[ 3742] 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) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.63%, ctx=31, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=179397: Wed Aug 26 07:04:23 2026 write: IOPS=0, BW=2516KiB/s (2576kB/s)(12.0MiB/4884msec); 0 zone resets clat (msec): min=552, max=3664, avg=1623.57, stdev=1768.00 lat (msec): min=552, max=3666, avg=1627.43, stdev=1766.97 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 3675], 80.00th=[ 3675], 90.00th=[ 3675], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 6564, max= 8015, per=100.00%, avg=7289.50, stdev=1026.01, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=1.86%, ctx=47, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3939KiB/s (4034kB/s), 1123KiB/s-2955KiB/s (1150kB/s-3025kB/s), io=16.0MiB (16.8MB), run=3648-4159msec WRITE: bw=6378KiB/s (6531kB/s), 2246KiB/s-2516KiB/s (2300kB/s-2576kB/s), io=32.0MiB (33.6MB), run=3648-5138msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179389: Wed Aug 26 07:04:23 2026 read: IOPS=0, BW=2556KiB/s (2618kB/s)(12.0MiB/4807msec) clat (msec): min=1299, max=2041, avg=1565.30, stdev=413.72 lat (msec): min=1299, max=2041, avg=1565.30, stdev=413.72 clat percentiles (msec): | 1.00th=[ 1301], 5.00th=[ 1301], 10.00th=[ 1301], 20.00th=[ 1301], | 30.00th=[ 1301], 40.00th=[ 1351], 50.00th=[ 1351], 60.00th=[ 1351], | 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= 7922, max= 8126, per=100.00%, avg=8024.00, stdev=144.25, 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=0.00%, sys=2.18%, ctx=48, 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=179390: Wed Aug 26 07:04:23 2026 read: IOPS=0, BW=1889KiB/s (1935kB/s)(4096KiB/2168msec) clat (nsec): min=515089k, max=515089k, avg=515089110.00, stdev= 0.00 lat (nsec): min=515091k, max=515091k, avg=515090802.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 514], 50.00th=[ 514], 60.00th=[ 514], | 70.00th=[ 514], 80.00th=[ 514], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] 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=3779KiB/s (3869kB/s)(8192KiB/2168msec); 0 zone resets clat (msec): min=445, max=1099, avg=772.27, stdev=462.80 lat (msec): min=445, max=1102, avg=774.09, stdev=464.32 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 447], 50.00th=[ 447], 60.00th=[ 1099], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] 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 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.32%, ctx=62, 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=179391: Wed Aug 26 07:04:23 2026 write: IOPS=0, BW=2268KiB/s (2322kB/s)(12.0MiB/5419msec); 0 zone resets clat (msec): min=380, max=2880, avg=1780.08, stdev=1276.56 lat (msec): min=380, max=2880, avg=1780.58, stdev=1276.56 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 2072], 50.00th=[ 2072], 60.00th=[ 2072], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=2.10%, ctx=46, 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=179393: Wed Aug 26 07:04:23 2026 write: IOPS=0, BW=2506KiB/s (2566kB/s)(12.0MiB/4903msec); 0 zone resets clat (msec): min=400, max=3891, avg=1606.76, stdev=1980.01 lat (msec): min=400, max=3892, avg=1607.18, stdev=1980.03 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 527], 50.00th=[ 527], 60.00th=[ 527], | 70.00th=[ 3876], 80.00th=[ 3876], 90.00th=[ 3876], 95.00th=[ 3876], | 99.00th=[ 3876], 99.50th=[ 3876], 99.90th=[ 3876], 99.95th=[ 3876], | 99.99th=[ 3876] bw ( KiB/s): min= 6930, max= 8159, per=100.00%, avg=7544.50, stdev=869.03, 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=0.00%, sys=2.31%, ctx=44, 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=3408KiB/s (3490kB/s), 1889KiB/s-2556KiB/s (1935kB/s-2618kB/s), io=16.0MiB (16.8MB), run=2168-4807msec WRITE: bw=6047KiB/s (6192kB/s), 2268KiB/s-3779KiB/s (2322kB/s-3869kB/s), io=32.0MiB (33.6MB), run=2168-5419msec