== sanity test 398b: DIO and buffer IO race ============== 16:03:44 (1788206624) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 7.78654 s, 6.5 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=179018: Mon Aug 31 16:06:41 2026 read: IOPS=10, BW=40.3KiB/s (41.3kB/s)(5992KiB/148699msec) clat (usec): min=41, max=319832, avg=56547.59, stdev=37493.24 lat (usec): min=42, max=319833, avg=56550.51, stdev=37494.07 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 13435], 10.00th=[ 21103], 20.00th=[ 27919], | 30.00th=[ 33817], 40.00th=[ 41681], 50.00th=[ 49021], 60.00th=[ 56886], | 70.00th=[ 67634], 80.00th=[ 80217], 90.00th=[103285], 95.00th=[124257], | 99.00th=[183501], 99.50th=[223347], 99.90th=[278922], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 7, max= 95, per=25.37%, avg=40.08, stdev=16.21, samples=290 iops : min= 1, max= 23, avg= 9.33, stdev= 4.08, samples=290 write: IOPS=10, BW=42.3KiB/s (43.4kB/s)(6296KiB/148700msec); 0 zone resets clat (usec): min=916, max=947386, avg=40371.64, stdev=49809.77 lat (usec): min=919, max=947388, avg=40376.00, stdev=49813.58 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1221], 10.00th=[ 1401], 20.00th=[ 3294], | 30.00th=[ 6783], 40.00th=[ 15139], 50.00th=[ 27395], 60.00th=[ 38536], | 70.00th=[ 50594], 80.00th=[ 68682], 90.00th=[ 99091], 95.00th=[125305], | 99.00th=[198181], 99.50th=[229639], 99.90th=[354419], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 7, max= 112, per=25.78%, avg=42.53, stdev=19.50, samples=287 iops : min= 1, max= 28, avg= 9.95, stdev= 4.93, samples=287 lat (usec) : 50=0.10%, 100=1.69%, 250=0.07%, 500=0.03%, 1000=0.13% lat (msec) : 2=7.10%, 4=4.10%, 10=7.03%, 20=6.41%, 50=33.98% lat (msec) : 100=28.84%, 250=10.06%, 500=0.42%, 1000=0.03% cpu : usr=0.08%, sys=4.38%, ctx=6172, 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=179019: Mon Aug 31 16:06:41 2026 read: IOPS=9, BW=39.4KiB/s (40.3kB/s)(5940KiB/150840msec) clat (usec): min=36, max=331305, avg=55909.43, stdev=37053.57 lat (usec): min=36, max=331308, avg=55911.27, stdev=37053.43 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 11863], 10.00th=[ 20579], 20.00th=[ 27657], | 30.00th=[ 34341], 40.00th=[ 41681], 50.00th=[ 48497], 60.00th=[ 57934], | 70.00th=[ 66847], 80.00th=[ 78119], 90.00th=[ 99091], 95.00th=[120062], | 99.00th=[198181], 99.50th=[219153], 99.90th=[295699], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 7, max= 94, per=24.57%, avg=38.83, stdev=16.12, samples=296 iops : min= 1, max= 23, avg= 9.02, stdev= 4.07, samples=296 write: IOPS=10, BW=42.1KiB/s (43.1kB/s)(6348KiB/150840msec); 0 zone resets clat (usec): min=1002, max=943888, avg=42417.48, stdev=50834.11 lat (usec): min=1003, max=943890, avg=42421.45, stdev=50836.69 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1237], 10.00th=[ 1434], 20.00th=[ 3818], | 30.00th=[ 8094], 40.00th=[ 16581], 50.00th=[ 29230], 60.00th=[ 39060], | 70.00th=[ 52691], 80.00th=[ 73925], 90.00th=[104334], 95.00th=[130548], | 99.00th=[204473], 99.50th=[229639], 99.90th=[341836], 99.95th=[943719], | 99.99th=[943719] bw ( KiB/s): min= 7, max= 111, per=25.54%, avg=42.14, stdev=19.73, samples=291 iops : min= 1, max= 27, avg= 9.86, stdev= 4.96, samples=291 lat (usec) : 50=0.20%, 100=1.86%, 250=0.03%, 500=0.03% lat (msec) : 2=6.84%, 4=3.81%, 10=6.41%, 20=7.06%, 50=34.11% lat (msec) : 100=29.07%, 250=10.32%, 500=0.23%, 1000=0.03% cpu : usr=0.08%, sys=4.38%, ctx=6243, 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=179020: Mon Aug 31 16:06:41 2026 read: IOPS=10, BW=40.3KiB/s (41.3kB/s)(6028KiB/149565msec) clat (usec): min=32, max=966454, avg=55729.40, stdev=45683.58 lat (usec): min=33, max=966455, avg=55732.30, stdev=45683.41 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 1385], 10.00th=[ 19792], 20.00th=[ 27132], | 30.00th=[ 33162], 40.00th=[ 39584], 50.00th=[ 46400], 60.00th=[ 53740], | 70.00th=[ 63701], 80.00th=[ 79168], 90.00th=[ 99091], 95.00th=[131597], | 99.00th=[206570], 99.50th=[242222], 99.90th=[354419], 99.95th=[968885], | 99.99th=[968885] bw ( KiB/s): min= 7, max= 95, per=25.29%, avg=39.96, stdev=17.17, samples=293 iops : min= 1, max= 23, avg= 9.30, stdev= 4.33, samples=293 write: IOPS=10, BW=41.9KiB/s (42.9kB/s)(6260KiB/149565msec); 0 zone resets clat (usec): min=971, max=401956, avg=41595.73, stdev=45300.28 lat (usec): min=972, max=401958, avg=41603.76, stdev=45299.13 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1237], 10.00th=[ 1450], 20.00th=[ 4015], | 30.00th=[ 7898], 40.00th=[ 16712], 50.00th=[ 28181], 60.00th=[ 38536], | 70.00th=[ 53740], 80.00th=[ 73925], 90.00th=[101188], 95.00th=[128451], | 99.00th=[187696], 99.50th=[208667], 99.90th=[354419], 99.95th=[400557], | 99.99th=[400557] bw ( KiB/s): min= 7, max= 120, per=25.23%, avg=41.63, stdev=19.53, samples=292 iops : min= 1, max= 30, avg= 9.73, stdev= 4.93, samples=292 lat (usec) : 50=0.16%, 100=2.12%, 250=0.13%, 500=0.03%, 1000=0.03% lat (msec) : 2=6.38%, 4=3.84%, 10=6.74%, 20=7.26%, 50=34.96% lat (msec) : 100=28.22%, 250=9.73%, 500=0.36%, 1000=0.03% cpu : usr=0.07%, sys=4.34%, ctx=6173, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179021: Mon Aug 31 16:06:41 2026 read: IOPS=9, BW=39.9KiB/s (40.9kB/s)(6052KiB/151536msec) clat (usec): min=42, max=303308, avg=55999.91, stdev=38851.43 lat (usec): min=43, max=303310, avg=56008.70, stdev=38851.05 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 2114], 10.00th=[ 19530], 20.00th=[ 27657], | 30.00th=[ 34341], 40.00th=[ 40633], 50.00th=[ 47973], 60.00th=[ 56886], | 70.00th=[ 66847], 80.00th=[ 79168], 90.00th=[102237], 95.00th=[124257], | 99.00th=[208667], 99.50th=[242222], 99.90th=[291505], 99.95th=[304088], | 99.99th=[304088] bw ( KiB/s): min= 7, max= 103, per=25.23%, avg=39.87, stdev=16.66, samples=295 iops : min= 1, max= 25, avg= 9.29, stdev= 4.21, samples=295 write: IOPS=10, BW=41.2KiB/s (42.1kB/s)(6236KiB/151536msec); 0 zone resets clat (usec): min=985, max=948599, avg=42452.13, stdev=50563.20 lat (usec): min=987, max=948602, avg=42455.47, stdev=50562.31 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1221], 10.00th=[ 1516], 20.00th=[ 3916], | 30.00th=[ 7504], 40.00th=[ 15533], 50.00th=[ 27919], 60.00th=[ 39584], | 70.00th=[ 54789], 80.00th=[ 74974], 90.00th=[104334], 95.00th=[128451], | 99.00th=[200279], 99.50th=[223347], 99.90th=[304088], 99.95th=[952108], | 99.99th=[952108] bw ( KiB/s): min= 7, max= 103, per=24.90%, avg=41.08, stdev=19.87, samples=295 iops : min= 1, max= 25, avg= 9.59, stdev= 5.01, samples=295 lat (usec) : 50=0.13%, 100=1.99%, 250=0.16%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=6.35%, 4=3.87%, 10=7.13%, 20=7.32%, 50=33.30% lat (msec) : 100=28.84%, 250=10.38%, 500=0.29%, 1000=0.03% cpu : usr=0.07%, sys=4.24%, ctx=6075, 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=158KiB/s (162kB/s), 39.4KiB/s-40.3KiB/s (40.3kB/s-41.3kB/s), io=23.4MiB (24.6MB), run=148699-151536msec WRITE: bw=166KiB/s (170kB/s), 41.2KiB/s-42.3KiB/s (42.1kB/s-43.4kB/s), io=24.6MiB (25.7MB), run=148700-151536msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179014: Mon Aug 31 16:07:31 2026 read: IOPS=7, BW=29.9KiB/s (30.6kB/s)(5992KiB/200574msec) clat (msec): min=5, max=1188, avg=51.96, stdev=57.08 lat (msec): min=5, max=1188, avg=51.97, stdev=57.08 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 43], | 70.00th=[ 55], 80.00th=[ 75], 90.00th=[ 116], 95.00th=[ 157], | 99.00th=[ 247], 99.50th=[ 271], 99.90th=[ 422], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 126, per=26.57%, avg=31.35, stdev=22.40, samples=371 iops : min= 1, max= 31, avg= 7.16, stdev= 5.64, samples=371 write: IOPS=7, BW=31.4KiB/s (32.1kB/s)(6296KiB/200574msec); 0 zone resets clat (msec): min=11, max=481, avg=77.65, stdev=57.94 lat (msec): min=11, max=481, avg=77.65, stdev=57.95 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 57], 60.00th=[ 70], | 70.00th=[ 89], 80.00th=[ 116], 90.00th=[ 159], 95.00th=[ 188], | 99.00th=[ 292], 99.50th=[ 359], 99.90th=[ 426], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 7, max= 102, per=25.46%, avg=31.57, stdev=20.93, samples=387 iops : min= 1, max= 25, avg= 7.21, stdev= 5.27, samples=387 lat (msec) : 10=1.40%, 20=11.69%, 50=41.47%, 100=26.04%, 250=18.03% lat (msec) : 500=1.33%, 2000=0.03% cpu : usr=0.06%, sys=1.47%, ctx=4867, 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=179015: Mon Aug 31 16:07:31 2026 read: IOPS=7, BW=29.4KiB/s (30.1kB/s)(5940KiB/201857msec) clat (msec): min=6, max=1033, avg=52.52, stdev=55.99 lat (msec): min=6, max=1033, avg=52.52, stdev=55.99 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 54], 80.00th=[ 77], 90.00th=[ 118], 95.00th=[ 157], | 99.00th=[ 239], 99.50th=[ 292], 99.90th=[ 430], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 119, per=25.84%, avg=30.49, stdev=21.83, samples=377 iops : min= 1, max= 29, avg= 6.94, stdev= 5.51, samples=377 write: IOPS=7, BW=31.4KiB/s (32.2kB/s)(6348KiB/201857msec); 0 zone resets clat (msec): min=14, max=454, avg=77.77, stdev=57.30 lat (msec): min=14, max=454, avg=77.77, stdev=57.30 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 49], 50.00th=[ 58], 60.00th=[ 70], | 70.00th=[ 89], 80.00th=[ 117], 90.00th=[ 157], 95.00th=[ 188], | 99.00th=[ 292], 99.50th=[ 334], 99.90th=[ 397], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 7, max= 103, per=25.57%, avg=31.71, stdev=20.95, samples=387 iops : min= 1, max= 25, avg= 7.24, stdev= 5.27, samples=387 lat (msec) : 10=1.27%, 20=10.90%, 50=42.35%, 100=25.52%, 250=18.68% lat (msec) : 500=1.24%, 2000=0.03% cpu : usr=0.06%, sys=1.39%, ctx=4806, 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=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=179016: Mon Aug 31 16:07:31 2026 read: IOPS=7, BW=30.0KiB/s (30.7kB/s)(6028KiB/200767msec) clat (msec): min=5, max=419, avg=53.12, stdev=48.35 lat (msec): min=5, max=419, avg=53.12, stdev=48.35 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 43], | 70.00th=[ 56], 80.00th=[ 82], 90.00th=[ 124], 95.00th=[ 159], | 99.00th=[ 226], 99.50th=[ 247], 99.90th=[ 376], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 111, per=26.18%, avg=30.89, stdev=21.39, samples=378 iops : min= 1, max= 27, avg= 7.04, stdev= 5.40, samples=378 write: IOPS=7, BW=31.2KiB/s (31.9kB/s)(6260KiB/200767msec); 0 zone resets clat (msec): min=12, max=1083, avg=76.83, stdev=60.37 lat (msec): min=12, max=1083, avg=76.83, stdev=60.37 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 49], 50.00th=[ 58], 60.00th=[ 70], | 70.00th=[ 89], 80.00th=[ 114], 90.00th=[ 150], 95.00th=[ 184], | 99.00th=[ 275], 99.50th=[ 326], 99.90th=[ 447], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 111, per=25.16%, avg=31.20, stdev=20.83, samples=388 iops : min= 1, max= 27, avg= 7.12, stdev= 5.25, samples=388 lat (msec) : 10=0.98%, 20=11.26%, 50=41.50%, 100=26.27%, 250=18.95% lat (msec) : 500=1.01%, 2000=0.03% cpu : usr=0.06%, sys=1.48%, ctx=4756, 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=179017: Mon Aug 31 16:07:31 2026 read: IOPS=7, BW=29.0KiB/s (30.7kB/s)(6052KiB/201906msec) clat (msec): min=6, max=422, avg=50.97, stdev=47.63 lat (msec): min=6, max=422, avg=50.97, stdev=47.63 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 56], 80.00th=[ 78], 90.00th=[ 114], 95.00th=[ 150], | 99.00th=[ 222], 99.50th=[ 257], 99.90th=[ 359], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 7, max= 119, per=26.24%, avg=30.97, stdev=22.89, samples=378 iops : min= 1, max= 29, avg= 7.06, stdev= 5.76, samples=378 write: IOPS=7, BW=30.9KiB/s (31.6kB/s)(6236KiB/201906msec); 0 zone resets clat (msec): min=14, max=1048, avg=79.75, stdev=62.61 lat (msec): min=14, max=1048, avg=79.75, stdev=62.61 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 49], 50.00th=[ 59], 60.00th=[ 74], | 70.00th=[ 94], 80.00th=[ 118], 90.00th=[ 159], 95.00th=[ 194], | 99.00th=[ 275], 99.50th=[ 338], 99.90th=[ 481], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 111, per=24.81%, avg=30.77, stdev=20.61, samples=391 iops : min= 1, max= 27, avg= 7.01, stdev= 5.19, samples=391 lat (msec) : 10=1.20%, 20=12.50%, 50=40.43%, 100=26.01%, 250=18.65% lat (msec) : 500=1.17%, 2000=0.03% cpu : usr=0.06%, sys=1.47%, ctx=4861, 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=119KiB/s (122kB/s), 29.4KiB/s-30.0KiB/s (30.1kB/s-30.7kB/s), io=23.4MiB (24.6MB), run=200574-201906msec WRITE: bw=125KiB/s (128kB/s), 30.9KiB/s-31.4KiB/s (31.6kB/s-32.2kB/s), io=24.6MiB (25.7MB), run=200574-201906msec 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=179069: Mon Aug 31 16:08:15 2026 read: IOPS=11, BW=182KiB/s (186kB/s)(5920KiB/32541msec) clat (usec): min=36, max=190515, avg=45730.15, stdev=29564.28 lat (usec): min=36, max=190516, avg=45731.39, stdev=29564.29 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 68], 10.00th=[ 16712], 20.00th=[ 22938], | 30.00th=[ 28967], 40.00th=[ 34341], 50.00th=[ 41157], 60.00th=[ 47973], | 70.00th=[ 54789], 80.00th=[ 66847], 90.00th=[ 82314], 95.00th=[100140], | 99.00th=[141558], 99.50th=[175113], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 61, max= 383, per=24.64%, avg=181.38, stdev=68.58, samples=63 iops : min= 3, max= 23, avg=10.54, stdev= 4.35, samples=63 write: IOPS=12, BW=196KiB/s (200kB/s)(6368KiB/32541msec); 0 zone resets clat (usec): min=1406, max=241504, avg=38386.55, stdev=35532.53 lat (usec): min=1409, max=241506, avg=38404.40, stdev=35547.37 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2507], 10.00th=[ 3654], 20.00th=[ 7111], | 30.00th=[ 13042], 40.00th=[ 22676], 50.00th=[ 28443], 60.00th=[ 35914], | 70.00th=[ 49021], 80.00th=[ 62653], 90.00th=[ 89654], 95.00th=[112722], | 99.00th=[147850], 99.50th=[152044], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 21, max= 476, per=25.85%, avg=200.10, stdev=93.40, samples=62 iops : min= 1, max= 29, avg=11.73, stdev= 5.90, samples=62 lat (usec) : 50=0.39%, 100=3.12%, 250=0.13%, 750=0.13%, 1000=0.13% lat (msec) : 2=1.43%, 4=4.43%, 10=7.16%, 20=8.59%, 50=41.15% lat (msec) : 100=26.82%, 250=6.51% cpu : usr=0.08%, sys=5.77%, ctx=1722, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179070: Mon Aug 31 16:08:15 2026 read: IOPS=11, BW=186KiB/s (191kB/s)(5744KiB/30850msec) clat (usec): min=51, max=157877, avg=43595.10, stdev=27473.77 lat (usec): min=51, max=157879, avg=43596.33, stdev=27473.76 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 67], 10.00th=[ 355], 20.00th=[ 23200], | 30.00th=[ 29230], 40.00th=[ 35390], 50.00th=[ 41157], 60.00th=[ 47973], | 70.00th=[ 53216], 80.00th=[ 62129], 90.00th=[ 81265], 95.00th=[ 95945], | 99.00th=[120062], 99.50th=[139461], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 31, max= 383, per=25.33%, avg=186.45, stdev=76.32, samples=60 iops : min= 1, max= 23, avg=10.87, stdev= 4.79, samples=60 write: IOPS=13, BW=212KiB/s (217kB/s)(6544KiB/30850msec); 0 zone resets clat (usec): min=1526, max=230062, avg=36589.82, stdev=35432.97 lat (usec): min=1527, max=230063, avg=36592.87, stdev=35434.39 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2442], 10.00th=[ 3916], 20.00th=[ 6325], | 30.00th=[ 10814], 40.00th=[ 19268], 50.00th=[ 25822], 60.00th=[ 35390], | 70.00th=[ 45351], 80.00th=[ 62653], 90.00th=[ 88605], 95.00th=[108528], | 99.00th=[158335], 99.50th=[168821], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 31, max= 411, per=27.39%, avg=212.03, stdev=82.47, samples=60 iops : min= 1, max= 25, avg=12.48, stdev= 5.21, samples=60 lat (usec) : 100=3.65%, 250=0.91%, 500=0.13% lat (msec) : 2=1.56%, 4=4.17%, 10=9.90%, 20=8.85%, 50=40.76% lat (msec) : 100=24.74%, 250=5.34% cpu : usr=0.06%, sys=5.96%, ctx=1681, 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=179071: Mon Aug 31 16:08:15 2026 read: IOPS=12, BW=207KiB/s (212kB/s)(6256KiB/30280msec) clat (usec): min=37, max=177627, avg=44679.38, stdev=29921.06 lat (usec): min=37, max=177629, avg=44680.61, stdev=29921.03 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 60], 10.00th=[ 355], 20.00th=[ 23200], | 30.00th=[ 28181], 40.00th=[ 34341], 50.00th=[ 40633], 60.00th=[ 47449], | 70.00th=[ 55837], 80.00th=[ 66323], 90.00th=[ 80217], 95.00th=[ 99091], | 99.00th=[149947], 99.50th=[175113], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 63, max= 412, per=28.24%, avg=207.81, stdev=67.51, samples=59 iops : min= 3, max= 25, avg=12.22, stdev= 4.24, samples=59 write: IOPS=12, BW=199KiB/s (204kB/s)(6032KiB/30280msec); 0 zone resets clat (usec): min=1518, max=191025, avg=33748.26, stdev=31930.52 lat (usec): min=1520, max=191036, avg=33752.87, stdev=31931.40 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2671], 10.00th=[ 3720], 20.00th=[ 6456], | 30.00th=[ 10683], 40.00th=[ 15664], 50.00th=[ 24249], 60.00th=[ 32900], | 70.00th=[ 44303], 80.00th=[ 60031], 90.00th=[ 74974], 95.00th=[ 90702], | 99.00th=[152044], 99.50th=[173016], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 63, max= 415, per=26.05%, avg=201.64, stdev=81.75, samples=58 iops : min= 3, max= 25, avg=11.83, stdev= 5.17, samples=58 lat (usec) : 50=0.65%, 100=3.78%, 250=0.65%, 500=0.13%, 750=0.13% lat (msec) : 2=1.30%, 4=4.04%, 10=8.85%, 20=10.16%, 50=39.45% lat (msec) : 100=26.56%, 250=4.30% cpu : usr=0.06%, sys=6.33%, ctx=1730, 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=179072: Mon Aug 31 16:08:15 2026 read: IOPS=12, BW=199KiB/s (204kB/s)(6032KiB/30315msec) clat (usec): min=40, max=180938, avg=41575.30, stdev=30311.71 lat (usec): min=41, max=180939, avg=41576.75, stdev=30311.75 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 61], 10.00th=[ 71], 20.00th=[ 20579], | 30.00th=[ 26870], 40.00th=[ 31851], 50.00th=[ 38011], 60.00th=[ 43254], | 70.00th=[ 50070], 80.00th=[ 62129], 90.00th=[ 77071], 95.00th=[ 96994], | 99.00th=[135267], 99.50th=[166724], 99.90th=[181404], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 22, max= 381, per=27.10%, avg=199.49, stdev=75.06, samples=59 iops : min= 1, max= 23, avg=11.69, stdev= 4.70, samples=59 write: IOPS=12, BW=206KiB/s (211kB/s)(6256KiB/30315msec); 0 zone resets clat (usec): min=1347, max=212714, avg=36580.56, stdev=37620.76 lat (usec): min=1348, max=212716, avg=36584.35, stdev=37619.79 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1844], 10.00th=[ 2835], 20.00th=[ 5735], | 30.00th=[ 8586], 40.00th=[ 17171], 50.00th=[ 24773], 60.00th=[ 34866], | 70.00th=[ 45876], 80.00th=[ 61604], 90.00th=[ 83362], 95.00th=[111674], | 99.00th=[173016], 99.50th=[206570], 99.90th=[212861], 99.95th=[212861], | 99.99th=[212861] bw ( KiB/s): min= 31, max= 444, per=26.96%, avg=208.64, stdev=87.50, samples=59 iops : min= 1, max= 27, avg=12.27, stdev= 5.50, samples=59 lat (usec) : 50=0.52%, 100=5.73%, 250=0.39%, 750=0.26% lat (msec) : 2=2.86%, 4=4.17%, 10=9.64%, 20=8.46%, 50=38.67% lat (msec) : 100=23.31%, 250=5.99% cpu : usr=0.06%, sys=5.77%, ctx=1583, 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=736KiB/s (754kB/s), 182KiB/s-207KiB/s (186kB/s-212kB/s), io=23.4MiB (24.5MB), run=30280-32541msec WRITE: bw=774KiB/s (793kB/s), 196KiB/s-212KiB/s (200kB/s-217kB/s), io=24.6MiB (25.8MB), run=30280-32541msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179073: Mon Aug 31 16:08:27 2026 read: IOPS=8, BW=133KiB/s (136kB/s)(5920KiB/44477msec) clat (msec): min=7, max=263, avg=46.41, stdev=38.41 lat (msec): min=7, max=263, avg=46.42, stdev=38.41 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 35], 60.00th=[ 40], | 70.00th=[ 50], 80.00th=[ 65], 90.00th=[ 96], 95.00th=[ 132], | 99.00th=[ 211], 99.50th=[ 220], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 31, max= 416, per=24.52%, avg=131.67, stdev=80.13, samples=87 iops : min= 1, max= 26, avg= 7.46, stdev= 5.12, samples=87 write: IOPS=8, BW=143KiB/s (147kB/s)(6368KiB/44477msec); 0 zone resets clat (msec): min=16, max=359, avg=68.34, stdev=44.61 lat (msec): min=16, max=359, avg=68.35, stdev=44.61 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 48], 50.00th=[ 54], 60.00th=[ 66], | 70.00th=[ 79], 80.00th=[ 96], 90.00th=[ 127], 95.00th=[ 161], | 99.00th=[ 213], 99.50th=[ 268], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 29, max= 348, per=25.20%, avg=142.36, stdev=74.72, samples=87 iops : min= 1, max= 21, avg= 8.13, stdev= 4.77, samples=87 lat (msec) : 10=0.39%, 20=10.29%, 50=45.83%, 100=29.30%, 250=13.80% lat (msec) : 500=0.39% cpu : usr=0.04%, sys=1.88%, ctx=1208, 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=179074: Mon Aug 31 16:08:27 2026 read: IOPS=8, BW=129KiB/s (132kB/s)(5744KiB/44563msec) clat (msec): min=8, max=262, avg=47.53, stdev=42.34 lat (msec): min=8, max=262, avg=47.53, stdev=42.34 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 47], 80.00th=[ 66], 90.00th=[ 111], 95.00th=[ 140], | 99.00th=[ 205], 99.50th=[ 264], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 30, max= 443, per=25.13%, avg=134.95, stdev=87.29, samples=84 iops : min= 1, max= 27, avg= 7.67, stdev= 5.57, samples=84 write: IOPS=9, BW=147KiB/s (150kB/s)(6544KiB/44563msec); 0 zone resets clat (msec): min=14, max=374, avg=66.63, stdev=43.15 lat (msec): min=14, max=374, avg=66.63, stdev=43.15 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 65], | 70.00th=[ 74], 80.00th=[ 91], 90.00th=[ 125], 95.00th=[ 153], | 99.00th=[ 197], 99.50th=[ 239], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 30, max= 410, per=26.47%, avg=149.57, stdev=79.73, samples=86 iops : min= 1, max= 25, avg= 8.58, stdev= 5.04, samples=86 lat (msec) : 10=0.39%, 20=9.38%, 50=48.18%, 100=28.65%, 250=12.89% lat (msec) : 500=0.52% cpu : usr=0.06%, sys=1.76%, ctx=1120, 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=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=179075: Mon Aug 31 16:08:27 2026 read: IOPS=9, BW=144KiB/s (148kB/s)(6256KiB/43376msec) clat (msec): min=7, max=200, avg=45.65, stdev=36.21 lat (msec): min=7, max=200, avg=45.65, stdev=36.21 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 35], 60.00th=[ 42], | 70.00th=[ 51], 80.00th=[ 65], 90.00th=[ 94], 95.00th=[ 128], | 99.00th=[ 190], 99.50th=[ 197], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 31, max= 410, per=27.91%, avg=149.85, stdev=88.09, samples=82 iops : min= 1, max= 25, avg= 8.61, stdev= 5.60, samples=82 write: IOPS=8, BW=139KiB/s (142kB/s)(6032KiB/43376msec); 0 zone resets clat (msec): min=11, max=283, avg=66.65, stdev=41.62 lat (msec): min=11, max=283, avg=66.66, stdev=41.62 clat percentiles (msec): | 1.00th=[ 16], 5.00th=[ 24], 10.00th=[ 26], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 55], 60.00th=[ 66], | 70.00th=[ 81], 80.00th=[ 94], 90.00th=[ 124], 95.00th=[ 146], | 99.00th=[ 218], 99.50th=[ 251], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 30, max= 473, per=24.19%, avg=136.66, stdev=78.27, samples=85 iops : min= 1, max= 29, avg= 7.78, stdev= 5.02, samples=85 lat (msec) : 10=0.78%, 20=12.63%, 50=44.92%, 100=28.52%, 250=12.89% lat (msec) : 500=0.26% cpu : usr=0.05%, sys=1.93%, ctx=1222, 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=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=179076: Mon Aug 31 16:08:27 2026 read: IOPS=8, BW=138KiB/s (141kB/s)(6032KiB/43695msec) clat (msec): min=5, max=344, avg=48.83, stdev=41.42 lat (msec): min=5, max=344, avg=48.83, stdev=41.42 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 31], 50.00th=[ 37], 60.00th=[ 46], | 70.00th=[ 54], 80.00th=[ 70], 90.00th=[ 101], 95.00th=[ 125], | 99.00th=[ 199], 99.50th=[ 271], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 31, max= 384, per=25.68%, avg=137.89, stdev=70.83, samples=85 iops : min= 1, max= 24, avg= 7.85, stdev= 4.55, samples=85 write: IOPS=8, BW=143KiB/s (147kB/s)(6256KiB/43695msec); 0 zone resets clat (msec): min=14, max=266, avg=63.62, stdev=39.76 lat (msec): min=14, max=266, avg=63.63, stdev=39.76 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 28], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 52], 60.00th=[ 60], | 70.00th=[ 71], 80.00th=[ 91], 90.00th=[ 111], 95.00th=[ 146], | 99.00th=[ 207], 99.50th=[ 234], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 31, max= 384, per=26.19%, avg=147.99, stdev=79.89, samples=83 iops : min= 1, max= 24, avg= 8.49, stdev= 5.11, samples=83 lat (msec) : 10=0.65%, 20=10.55%, 50=46.74%, 100=28.65%, 250=13.02% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=1.93%, ctx=1163, 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=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=537KiB/s (550kB/s), 129KiB/s-144KiB/s (132kB/s-148kB/s), io=23.4MiB (24.5MB), run=43376-44563msec WRITE: bw=565KiB/s (579kB/s), 139KiB/s-147KiB/s (142kB/s-150kB/s), io=24.6MiB (25.8MB), run=43376-44563msec 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=179093: Mon Aug 31 16:08:45 2026 read: IOPS=1, BW=1227KiB/s (1256kB/s)(7168KiB/5843msec) clat (usec): min=558, max=3420.1k, avg=597576.49, stdev=1251465.14 lat (usec): min=559, max=3420.1k, avg=597577.77, stdev=1251465.21 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], | 20.00th=[ 635], 30.00th=[ 791], 40.00th=[ 791], | 50.00th=[ 193987], 60.00th=[ 258999], 70.00th=[ 258999], | 80.00th=[ 308282], 90.00th=[3405775], 95.00th=[3405775], | 99.00th=[3405775], 99.50th=[3405775], 99.90th=[3405775], | 99.95th=[3405775], 99.99th=[3405775] bw ( KiB/s): min= 2748, max= 6131, per=100.00%, avg=4439.50, stdev=2392.14, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=0, BW=876KiB/s (897kB/s)(5120KiB/5843msec); 0 zone resets clat (msec): min=165, max=598, avg=331.59, stdev=164.48 lat (msec): min=165, max=598, avg=331.67, stdev=164.50 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 347], 80.00th=[ 347], 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= 2043, max= 4087, per=63.21%, avg=3065.00, stdev=1445.33, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (usec) : 750=16.67%, 1000=8.33% lat (msec) : 250=25.00%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.65%, ctx=263, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179094: Mon Aug 31 16:08:45 2026 read: IOPS=0, BW=346KiB/s (355kB/s)(2048KiB/5912msec) clat (msec): min=245, max=352, avg=298.93, stdev=75.68 lat (msec): min=245, max=352, avg=298.93, stdev=75.68 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 247], | 30.00th=[ 247], 40.00th=[ 247], 50.00th=[ 247], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 1378, max= 2035, per=49.26%, avg=1706.50, stdev=464.57, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1732KiB/s (1774kB/s)(10.0MiB/5912msec); 0 zone resets clat (msec): min=235, max=1654, avg=530.09, stdev=451.06 lat (msec): min=235, max=1654, avg=530.24, stdev=451.04 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 247], | 30.00th=[ 275], 40.00th=[ 317], 50.00th=[ 330], 60.00th=[ 368], | 70.00th=[ 397], 80.00th=[ 506], 90.00th=[ 978], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 1809, max= 4079, per=53.17%, avg=2578.29, stdev=1017.54, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=25.00%, 500=50.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=12.93%, ctx=196, 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=179095: Mon Aug 31 16:08:45 2026 read: IOPS=1, BW=1125KiB/s (1152kB/s)(6144KiB/5460msec) clat (usec): min=764, max=295051, avg=170729.86, stdev=124974.34 lat (usec): min=765, max=295052, avg=170731.29, stdev=124974.76 clat percentiles (usec): | 1.00th=[ 766], 5.00th=[ 766], 10.00th=[ 766], 20.00th=[ 35914], | 30.00th=[ 35914], 40.00th=[175113], 50.00th=[175113], 60.00th=[258999], | 70.00th=[258999], 80.00th=[258999], 90.00th=[295699], 95.00th=[295699], | 99.00th=[295699], 99.50th=[295699], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 2039, max= 4063, per=97.35%, avg=3372.33, stdev=1154.95, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1125KiB/s (1152kB/s)(6144KiB/5460msec); 0 zone resets clat (msec): min=221, max=2074, avg=738.75, stdev=688.48 lat (msec): min=221, max=2074, avg=738.98, stdev=688.39 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 498], | 70.00th=[ 852], 80.00th=[ 852], 90.00th=[ 2072], 95.00th=[ 2072], | 99.00th=[ 2072], 99.50th=[ 2072], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 2007, max= 2048, per=41.89%, avg=2031.20, stdev=16.50, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (usec) : 1000=8.33% lat (msec) : 50=8.33%, 250=16.67%, 500=50.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.10%, ctx=195, 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=179096: Mon Aug 31 16:08:45 2026 read: IOPS=0, BW=887KiB/s (909kB/s)(5120KiB/5770msec) clat (usec): min=601, max=505393, avg=150934.97, stdev=223909.30 lat (usec): min=603, max=505395, avg=150936.47, stdev=223909.49 clat percentiles (usec): | 1.00th=[ 603], 5.00th=[ 603], 10.00th=[ 603], 20.00th=[ 603], | 30.00th=[ 857], 40.00th=[ 857], 50.00th=[ 4948], 60.00th=[ 4948], | 70.00th=[242222], 80.00th=[242222], 90.00th=[505414], 95.00th=[505414], | 99.00th=[505414], 99.50th=[505414], 99.90th=[505414], 99.95th=[505414], | 99.99th=[505414] bw ( KiB/s): min= 2031, max= 6023, per=100.00%, avg=4027.00, stdev=2822.77, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1242KiB/s (1272kB/s)(7168KiB/5770msec); 0 zone resets clat (msec): min=269, max=2301, avg=715.90, stdev=715.75 lat (msec): min=269, max=2301, avg=716.00, stdev=715.75 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 502], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 718], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 1838, max= 4071, per=49.50%, avg=2400.40, stdev=937.64, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 10=8.33%, 250=8.33%, 500=25.00%, 750=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.96%, ctx=166, 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=3464KiB/s (3547kB/s), 346KiB/s-1227KiB/s (355kB/s-1256kB/s), io=20.0MiB (20.0MB), run=5460-5912msec WRITE: bw=4850KiB/s (4966kB/s), 876KiB/s-1732KiB/s (897kB/s-1774kB/s), io=28.0MiB (29.4MB), run=5460-5912msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179088: Mon Aug 31 16:08:45 2026 read: IOPS=1, BW=1842KiB/s (1886kB/s)(7168KiB/3891msec) clat (msec): min=105, max=1054, avg=268.54, stdev=348.39 lat (msec): min=105, max=1054, avg=268.54, stdev=348.39 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 106], 10.00th=[ 106], 20.00th=[ 111], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 140], 60.00th=[ 148], | 70.00th=[ 148], 80.00th=[ 209], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 1921, max= 4557, per=85.23%, avg=2631.00, stdev=1284.90, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1316KiB/s (1347kB/s)(5120KiB/3891msec); 0 zone resets clat (msec): min=131, max=1202, avg=397.44, stdev=453.03 lat (msec): min=131, max=1202, avg=397.54, stdev=453.03 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 132], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 205], 60.00th=[ 205], | 70.00th=[ 275], 80.00th=[ 275], 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= 1519, max= 2023, per=43.71%, avg=1889.25, stdev=247.27, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 250=75.00%, 500=8.33%, 2000=16.67% cpu : usr=0.00%, sys=5.45%, ctx=89, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179089: Mon Aug 31 16:08:45 2026 read: IOPS=0, BW=326KiB/s (334kB/s)(2048KiB/6281msec) clat (msec): min=140, max=729, avg=434.96, stdev=415.92 lat (msec): min=140, max=729, avg=434.96, stdev=415.92 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 142], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 142], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 1494, max= 1992, per=56.46%, avg=1743.00, stdev=352.14, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1630KiB/s (1669kB/s)(10.0MiB/6281msec); 0 zone resets clat (msec): min=141, max=1715, avg=525.38, stdev=502.33 lat (msec): min=141, max=1716, avg=525.49, stdev=502.32 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 146], | 30.00th=[ 150], 40.00th=[ 155], 50.00th=[ 330], 60.00th=[ 368], | 70.00th=[ 542], 80.00th=[ 844], 90.00th=[ 869], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 2023, max= 4087, per=70.43%, avg=3044.20, stdev=1025.49, samples=5 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=5 lat (msec) : 250=41.67%, 500=16.67%, 750=16.67%, 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=4.68%, ctx=142, 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=179090: Mon Aug 31 16:08:45 2026 read: IOPS=0, BW=926KiB/s (949kB/s)(6144KiB/6633msec) clat (msec): min=137, max=1020, avg=421.54, stdev=351.76 lat (msec): min=137, max=1020, avg=421.54, stdev=351.76 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 186], 50.00th=[ 186], 60.00th=[ 351], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 1954, max= 2039, per=64.99%, avg=2006.20, stdev=33.79, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=0, BW=926KiB/s (949kB/s)(6144KiB/6633msec); 0 zone resets clat (msec): min=128, max=2455, avg=663.51, stdev=896.42 lat (msec): min=128, max=2455, avg=663.80, stdev=896.33 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 129], 10.00th=[ 129], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 241], 50.00th=[ 241], 60.00th=[ 363], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 2467], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 1954, max= 4401, per=60.39%, avg=2610.25, stdev=1194.57, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 250=50.00%, 500=16.67%, 750=16.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.29%, ctx=82, 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=179091: Mon Aug 31 16:08:45 2026 read: IOPS=0, BW=847KiB/s (868kB/s)(5120KiB/6043msec) clat (msec): min=152, max=519, avg=307.71, stdev=166.68 lat (msec): min=152, max=519, avg=307.71, stdev=166.68 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 213], 60.00th=[ 213], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] bw ( KiB/s): min= 1992, max= 2043, per=65.57%, avg=2024.25, stdev=23.17, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1186KiB/s (1215kB/s)(7168KiB/6043msec); 0 zone resets clat (msec): min=126, max=1915, avg=631.50, stdev=649.71 lat (msec): min=126, max=1915, avg=631.61, stdev=649.72 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 127], 10.00th=[ 127], 20.00th=[ 161], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 275], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 953], 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= 1921, max= 3271, per=52.35%, avg=2262.60, stdev=566.08, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 250=50.00%, 500=16.67%, 750=8.33%, 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=3.51%, ctx=106, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3088KiB/s (3162kB/s), 326KiB/s-1842KiB/s (334kB/s-1886kB/s), io=20.0MiB (20.0MB), run=3891-6633msec WRITE: bw=4323KiB/s (4426kB/s), 926KiB/s-1630KiB/s (949kB/s-1669kB/s), io=28.0MiB (29.4MB), run=3891-6633msec 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=179106: Mon Aug 31 16:09:04 2026 read: IOPS=0, BW=2328KiB/s (2384kB/s)(12.0MiB/5279msec) clat (msec): min=767, max=3566, avg=1705.16, stdev=1611.73 lat (msec): min=767, max=3566, avg=1705.16, stdev=1611.73 clat percentiles (msec): | 1.00th=[ 768], 5.00th=[ 768], 10.00th=[ 768], 20.00th=[ 768], | 30.00th=[ 768], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 3574], 80.00th=[ 3574], 90.00th=[ 3574], 95.00th=[ 3574], | 99.00th=[ 3574], 99.50th=[ 3574], 99.90th=[ 3574], 99.95th=[ 3574], | 99.99th=[ 3574] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=9.23%, ctx=753, 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=179108: Mon Aug 31 16:09:04 2026 read: IOPS=0, BW=806KiB/s (826kB/s)(4096KiB/5079msec) clat (nsec): min=3555.7M, max=3555.7M, avg=3555708585.00, stdev= 0.00 lat (nsec): min=3555.7M, max=3555.7M, avg=3555710890.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3540], 5.00th=[ 3540], 10.00th=[ 3540], 20.00th=[ 3540], | 30.00th=[ 3540], 40.00th=[ 3540], 50.00th=[ 3540], 60.00th=[ 3540], | 70.00th=[ 3540], 80.00th=[ 3540], 90.00th=[ 3540], 95.00th=[ 3540], | 99.00th=[ 3540], 99.50th=[ 3540], 99.90th=[ 3540], 99.95th=[ 3540], | 99.99th=[ 3540] 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=1613KiB/s (1652kB/s)(8192KiB/5079msec); 0 zone resets clat (msec): min=329, max=994, avg=662.11, stdev=470.11 lat (msec): min=330, max=995, avg=662.94, stdev=469.76 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 330], 10.00th=[ 330], 20.00th=[ 330], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 330], 60.00th=[ 995], | 70.00th=[ 995], 80.00th=[ 995], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.68%, ctx=147, 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=179109: Mon Aug 31 16:09:04 2026 write: IOPS=0, BW=2127KiB/s (2178kB/s)(12.0MiB/5777msec); 0 zone resets clat (msec): min=270, max=4894, avg=1858.71, stdev=2629.61 lat (msec): min=272, max=4897, avg=1860.50, stdev=2630.69 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 414], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 4866], 80.00th=[ 4866], 90.00th=[ 4866], 95.00th=[ 4866], | 99.00th=[ 4866], 99.50th=[ 4866], 99.90th=[ 4866], 99.95th=[ 4866], | 99.99th=[ 4866] bw ( KiB/s): min= 7922, max= 8031, per=100.00%, avg=7976.50, stdev=77.07, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=2.11%, ctx=58, 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=179112: Mon Aug 31 16:09:04 2026 write: IOPS=0, BW=2307KiB/s (2363kB/s)(12.0MiB/5326msec); 0 zone resets clat (msec): min=866, max=3091, avg=1733.77, stdev=1190.88 lat (msec): min=866, max=3092, avg=1734.55, stdev=1191.46 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 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= 8110, max= 8159, per=100.00%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.85%, ctx=83, 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=3104KiB/s (3178kB/s), 806KiB/s-2328KiB/s (826kB/s-2384kB/s), io=16.0MiB (16.8MB), run=5079-5279msec WRITE: bw=5672KiB/s (5808kB/s), 1613KiB/s-2307KiB/s (1652kB/s-2363kB/s), io=32.0MiB (33.6MB), run=5079-5777msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179105: Mon Aug 31 16:09:04 2026 read: IOPS=0, BW=3087KiB/s (3162kB/s)(12.0MiB/3980msec) clat (msec): min=389, max=3055, avg=1284.38, stdev=1534.09 lat (msec): min=389, max=3055, avg=1284.38, stdev=1534.09 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 409], 50.00th=[ 409], 60.00th=[ 409], | 70.00th=[ 3071], 80.00th=[ 3071], 90.00th=[ 3071], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min=16351, max=16351, per=100.00%, avg=16351.00, stdev= 0.00, samples=1 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.64%, ctx=55, 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=179107: Mon Aug 31 16:09:04 2026 read: IOPS=0, BW=713KiB/s (730kB/s)(4096KiB/5748msec) clat (nsec): min=4205.2M, max=4205.2M, avg=4205174007.00, stdev= 0.00 lat (nsec): min=4205.2M, max=4205.2M, avg=4205176592.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4212], 5.00th=[ 4212], 10.00th=[ 4212], 20.00th=[ 4212], | 30.00th=[ 4212], 40.00th=[ 4212], 50.00th=[ 4212], 60.00th=[ 4212], | 70.00th=[ 4212], 80.00th=[ 4212], 90.00th=[ 4212], 95.00th=[ 4212], | 99.00th=[ 4212], 99.50th=[ 4212], 99.90th=[ 4212], 99.95th=[ 4212], | 99.99th=[ 4212] bw ( KiB/s): min= 7787, max= 7787, per=100.00%, avg=7787.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1425KiB/s (1459kB/s)(8192KiB/5748msec); 0 zone resets clat (msec): min=374, max=817, avg=596.01, stdev=313.34 lat (msec): min=374, max=820, avg=597.75, stdev=315.42 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 376], 10.00th=[ 376], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 376], 50.00th=[ 376], 60.00th=[ 818], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 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) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.85%, ctx=69, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179110: Mon Aug 31 16:09:04 2026 write: IOPS=0, BW=2004KiB/s (2052kB/s)(12.0MiB/6132msec); 0 zone resets clat (msec): min=168, max=5206, avg=1942.74, stdev=2830.29 lat (msec): min=168, max=5207, avg=1943.20, stdev=2830.23 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 5201], 80.00th=[ 5201], 90.00th=[ 5201], 95.00th=[ 5201], | 99.00th=[ 5201], 99.50th=[ 5201], 99.90th=[ 5201], 99.95th=[ 5201], | 99.99th=[ 5201] 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) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.27%, ctx=64, 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=179111: Mon Aug 31 16:09:04 2026 write: IOPS=0, BW=2123KiB/s (2174kB/s)(12.0MiB/5788msec); 0 zone resets clat (msec): min=1002, max=3295, avg=1848.84, stdev=1259.03 lat (msec): min=1002, max=3296, avg=1849.52, stdev=1259.58 clat percentiles (msec): | 1.00th=[ 1003], 5.00th=[ 1003], 10.00th=[ 1003], 20.00th=[ 1003], | 30.00th=[ 1003], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 3306], 80.00th=[ 3306], 90.00th=[ 3306], 95.00th=[ 3306], | 99.00th=[ 3306], 99.50th=[ 3306], 99.90th=[ 3306], 99.95th=[ 3306], | 99.99th=[ 3306] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, 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=2.06%, ctx=76, 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 Run status group 0 (all jobs): READ: bw=2850KiB/s (2919kB/s), 713KiB/s-3087KiB/s (730kB/s-3162kB/s), io=16.0MiB (16.8MB), run=3980-5748msec WRITE: bw=5344KiB/s (5472kB/s), 1425KiB/s-2123KiB/s (1459kB/s-2174kB/s), io=32.0MiB (33.6MB), run=5748-6132msec