== sanity test 398b: DIO and buffer IO race ============== 07:59:43 (1787745583) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.9314 s, 8.5 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=145061: Wed Aug 26 08:02:23 2026 read: IOPS=10, BW=42.4KiB/s (43.4kB/s)(5992KiB/141321msec) clat (usec): min=33, max=984821, avg=45397.59, stdev=43486.78 lat (usec): min=34, max=984822, avg=45400.36, stdev=43493.94 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 55], 10.00th=[ 89], 20.00th=[ 18220], | 30.00th=[ 25297], 40.00th=[ 31327], 50.00th=[ 37487], 60.00th=[ 44303], | 70.00th=[ 54264], 80.00th=[ 68682], 90.00th=[ 88605], 95.00th=[108528], | 99.00th=[179307], 99.50th=[217056], 99.90th=[258999], 99.95th=[985662], | 99.99th=[985662] bw ( KiB/s): min= 7, max= 103, per=25.06%, avg=42.35, stdev=20.28, samples=275 iops : min= 1, max= 25, avg= 9.93, stdev= 5.09, samples=275 write: IOPS=11, BW=44.6KiB/s (45.6kB/s)(6296KiB/141321msec); 0 zone resets clat (usec): min=961, max=407811, avg=46313.02, stdev=52028.45 lat (usec): min=961, max=407812, avg=46314.92, stdev=52029.39 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1139], 10.00th=[ 1319], 20.00th=[ 3458], | 30.00th=[ 7242], 40.00th=[ 16581], 50.00th=[ 31851], 60.00th=[ 43254], | 70.00th=[ 60031], 80.00th=[ 81265], 90.00th=[110625], 95.00th=[143655], | 99.00th=[221250], 99.50th=[256902], 99.90th=[404751], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 7, max= 119, per=24.92%, avg=44.11, stdev=20.79, samples=277 iops : min= 1, max= 29, avg=10.39, stdev= 5.23, samples=277 lat (usec) : 50=1.07%, 100=4.07%, 250=0.29%, 500=0.23%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=7.42%, 4=3.71%, 10=6.48%, 20=9.15%, 50=32.39% lat (msec) : 100=24.74%, 250=9.86%, 500=0.33%, 1000=0.03% cpu : usr=0.06%, sys=4.50%, ctx=6273, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145062: Wed Aug 26 08:02:23 2026 read: IOPS=10, BW=41.9KiB/s (42.9kB/s)(5940KiB/141676msec) clat (usec): min=28, max=629504, avg=43815.82, stdev=39188.05 lat (usec): min=28, max=629505, avg=43817.74, stdev=39188.42 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 56], 10.00th=[ 76], 20.00th=[ 17433], | 30.00th=[ 24249], 40.00th=[ 30016], 50.00th=[ 35914], 60.00th=[ 43254], | 70.00th=[ 52691], 80.00th=[ 67634], 90.00th=[ 88605], 95.00th=[109577], | 99.00th=[158335], 99.50th=[231736], 99.90th=[299893], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 7, max= 120, per=24.83%, avg=41.96, stdev=19.82, samples=274 iops : min= 1, max= 30, avg= 9.84, stdev= 5.01, samples=274 write: IOPS=11, BW=44.8KiB/s (45.9kB/s)(6348KiB/141676msec); 0 zone resets clat (usec): min=927, max=847149, avg=47995.62, stdev=55844.00 lat (usec): min=928, max=847150, avg=47998.74, stdev=55843.45 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1156], 10.00th=[ 1516], 20.00th=[ 3556], | 30.00th=[ 7701], 40.00th=[ 19268], 50.00th=[ 33424], 60.00th=[ 46924], | 70.00th=[ 62129], 80.00th=[ 83362], 90.00th=[116917], 95.00th=[143655], | 99.00th=[214959], 99.50th=[283116], 99.90th=[480248], 99.95th=[843056], | 99.99th=[843056] bw ( KiB/s): min= 7, max= 136, per=25.29%, avg=44.76, stdev=21.67, samples=274 iops : min= 1, max= 34, avg=10.54, stdev= 5.46, samples=274 lat (usec) : 50=0.81%, 100=4.59%, 250=0.46%, 500=0.20%, 750=0.10% lat (usec) : 1000=0.20% lat (msec) : 2=6.77%, 4=4.39%, 10=6.54%, 20=8.37%, 50=32.23% lat (msec) : 100=24.61%, 250=10.25%, 500=0.42%, 750=0.03%, 1000=0.03% cpu : usr=0.05%, sys=4.38%, ctx=6226, 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=145063: Wed Aug 26 08:02:23 2026 read: IOPS=10, BW=43.3KiB/s (44.4kB/s)(6028KiB/139129msec) clat (usec): min=29, max=869562, avg=44327.60, stdev=41241.49 lat (usec): min=29, max=869563, avg=44328.93, stdev=41241.51 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 54], 10.00th=[ 64], 20.00th=[ 17433], | 30.00th=[ 24249], 40.00th=[ 30540], 50.00th=[ 36963], 60.00th=[ 44827], | 70.00th=[ 54264], 80.00th=[ 69731], 90.00th=[ 91751], 95.00th=[110625], | 99.00th=[168821], 99.50th=[189793], 99.90th=[256902], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 7, max= 119, per=25.56%, avg=43.20, stdev=21.58, samples=271 iops : min= 1, max= 29, avg=10.16, stdev= 5.43, samples=271 write: IOPS=11, BW=44.0KiB/s (46.1kB/s)(6260KiB/139129msec); 0 zone resets clat (usec): min=838, max=512710, avg=45929.73, stdev=50544.97 lat (usec): min=838, max=512711, avg=45936.00, stdev=50541.68 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1156], 10.00th=[ 1287], 20.00th=[ 3621], | 30.00th=[ 8291], 40.00th=[ 17957], 50.00th=[ 32113], 60.00th=[ 44303], | 70.00th=[ 60556], 80.00th=[ 82314], 90.00th=[110625], 95.00th=[141558], | 99.00th=[208667], 99.50th=[250610], 99.90th=[467665], 99.95th=[513803], | 99.99th=[513803] bw ( KiB/s): min= 7, max= 128, per=25.27%, avg=44.72, stdev=20.77, samples=272 iops : min= 1, max= 32, avg=10.54, stdev= 5.22, samples=272 lat (usec) : 50=1.37%, 100=5.01%, 250=0.52%, 500=0.03%, 750=0.10% lat (usec) : 1000=0.16% lat (msec) : 2=7.39%, 4=3.61%, 10=5.60%, 20=9.08%, 50=32.68% lat (msec) : 100=23.96%, 250=10.16%, 500=0.26%, 750=0.03%, 1000=0.03% cpu : usr=0.07%, sys=4.58%, ctx=6238, 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=145064: Wed Aug 26 08:02:23 2026 read: IOPS=10, BW=42.6KiB/s (43.6kB/s)(6052KiB/142004msec) clat (usec): min=25, max=865890, avg=44834.67, stdev=42561.81 lat (usec): min=25, max=865892, avg=44836.37, stdev=42562.51 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 53], 10.00th=[ 64], 20.00th=[ 17957], | 30.00th=[ 23725], 40.00th=[ 30016], 50.00th=[ 36439], 60.00th=[ 44827], | 70.00th=[ 54789], 80.00th=[ 69731], 90.00th=[ 93848], 95.00th=[110625], | 99.00th=[156238], 99.50th=[196084], 99.90th=[383779], 99.95th=[868221], | 99.99th=[868221] bw ( KiB/s): min= 7, max= 95, per=25.31%, avg=42.77, stdev=19.32, samples=275 iops : min= 1, max= 23, avg=10.04, stdev= 4.87, samples=275 write: IOPS=10, BW=43.9KiB/s (44.0kB/s)(6236KiB/142004msec); 0 zone resets clat (usec): min=931, max=393210, avg=47268.71, stdev=51271.67 lat (usec): min=932, max=393211, avg=47273.16, stdev=51269.42 clat percentiles (usec): | 1.00th=[ 1045], 5.00th=[ 1172], 10.00th=[ 1582], 20.00th=[ 3785], | 30.00th=[ 8160], 40.00th=[ 20055], 50.00th=[ 34341], 60.00th=[ 46400], | 70.00th=[ 62653], 80.00th=[ 82314], 90.00th=[110625], 95.00th=[143655], | 99.00th=[235930], 99.50th=[256902], 99.90th=[350225], 99.95th=[392168], | 99.99th=[392168] bw ( KiB/s): min= 7, max= 111, per=24.87%, avg=44.01, stdev=19.67, samples=275 iops : min= 1, max= 27, avg=10.36, stdev= 4.95, samples=275 lat (usec) : 50=1.40%, 100=4.82%, 250=0.33%, 750=0.03%, 1000=0.29% lat (msec) : 2=6.25%, 4=4.20%, 10=6.12%, 20=8.04%, 50=32.75% lat (msec) : 100=25.55%, 250=9.80%, 500=0.39%, 1000=0.03% cpu : usr=0.06%, sys=4.54%, ctx=6334, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=169KiB/s (173kB/s), 41.9KiB/s-43.3KiB/s (42.9kB/s-44.4kB/s), io=23.4MiB (24.6MB), run=139129-142004msec WRITE: bw=177KiB/s (181kB/s), 43.9KiB/s-44.0KiB/s (44.0kB/s-46.1kB/s), io=24.6MiB (25.7MB), run=139129-142004msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145066: Wed Aug 26 08:05:16 2026 read: IOPS=4, BW=19.2KiB/s (19.6kB/s)(5992KiB/312329msec) clat (msec): min=4, max=917, avg=38.12, stdev=48.04 lat (msec): min=4, max=917, avg=38.12, stdev=48.04 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 50], 90.00th=[ 82], 95.00th=[ 124], | 99.00th=[ 218], 99.50th=[ 279], 99.90th=[ 592], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 95, per=29.42%, avg=22.36, stdev=15.29, samples=516 iops : min= 1, max= 23, avg= 4.97, stdev= 3.86, samples=516 write: IOPS=5, BW=20.2KiB/s (20.6kB/s)(6296KiB/312329msec); 0 zone resets clat (msec): min=32, max=726, avg=162.08, stdev=76.77 lat (msec): min=32, max=726, avg=162.08, stdev=76.78 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 69], 10.00th=[ 83], 20.00th=[ 100], | 30.00th=[ 116], 40.00th=[ 131], 50.00th=[ 148], 60.00th=[ 165], | 70.00th=[ 188], 80.00th=[ 213], 90.00th=[ 255], 95.00th=[ 305], | 99.00th=[ 414], 99.50th=[ 472], 99.90th=[ 651], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 63, per=25.18%, avg=19.89, stdev= 9.08, samples=606 iops : min= 1, max= 15, avg= 4.35, stdev= 2.32, samples=606 lat (msec) : 10=4.39%, 20=14.88%, 50=20.64%, 100=15.79%, 250=38.38% lat (msec) : 500=5.70%, 750=0.20%, 1000=0.03% cpu : usr=0.03%, sys=0.92%, ctx=4995, 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=145067: Wed Aug 26 08:05:16 2026 read: IOPS=4, BW=18.9KiB/s (19.4kB/s)(5940KiB/314213msec) clat (msec): min=5, max=1024, avg=37.63, stdev=45.14 lat (msec): min=5, max=1024, avg=37.64, stdev=45.14 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 50], 90.00th=[ 84], 95.00th=[ 118], | 99.00th=[ 197], 99.50th=[ 232], 99.90th=[ 376], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 95, per=29.71%, avg=22.58, stdev=15.45, samples=506 iops : min= 1, max= 23, avg= 5.02, stdev= 3.89, samples=506 write: IOPS=5, BW=20.2KiB/s (20.7kB/s)(6348KiB/314213msec); 0 zone resets clat (msec): min=37, max=570, avg=162.69, stdev=76.19 lat (msec): min=37, max=570, avg=162.69, stdev=76.19 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 69], 10.00th=[ 82], 20.00th=[ 103], | 30.00th=[ 118], 40.00th=[ 133], 50.00th=[ 148], 60.00th=[ 167], | 70.00th=[ 186], 80.00th=[ 213], 90.00th=[ 262], 95.00th=[ 305], | 99.00th=[ 422], 99.50th=[ 489], 99.90th=[ 567], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 63, per=25.16%, avg=19.87, stdev= 9.20, samples=612 iops : min= 1, max= 15, avg= 4.34, stdev= 2.37, samples=612 lat (msec) : 10=3.39%, 20=16.57%, 50=19.43%, 100=15.33%, 250=38.90% lat (msec) : 500=6.15%, 750=0.20%, 2000=0.03% cpu : usr=0.03%, sys=0.89%, ctx=4946, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145068: Wed Aug 26 08:05:16 2026 read: IOPS=4, BW=19.2KiB/s (19.6kB/s)(6028KiB/314679msec) clat (msec): min=4, max=502, avg=39.32, stdev=40.52 lat (msec): min=4, max=502, avg=39.32, stdev=40.52 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 56], 90.00th=[ 85], 95.00th=[ 121], | 99.00th=[ 201], 99.50th=[ 230], 99.90th=[ 384], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 7, max= 86, per=29.12%, avg=22.13, stdev=15.53, samples=524 iops : min= 1, max= 21, avg= 4.92, stdev= 3.91, samples=524 write: IOPS=4, BW=19.9KiB/s (20.4kB/s)(6260KiB/314679msec); 0 zone resets clat (msec): min=28, max=1249, avg=163.12, stdev=87.44 lat (msec): min=28, max=1249, avg=163.12, stdev=87.44 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 67], 10.00th=[ 78], 20.00th=[ 96], | 30.00th=[ 115], 40.00th=[ 129], 50.00th=[ 144], 60.00th=[ 163], | 70.00th=[ 186], 80.00th=[ 218], 90.00th=[ 271], 95.00th=[ 309], | 99.00th=[ 460], 99.50th=[ 527], 99.90th=[ 852], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7, max= 64, per=25.00%, avg=19.75, stdev= 9.69, samples=607 iops : min= 1, max= 16, avg= 4.32, stdev= 2.48, samples=607 lat (msec) : 10=3.39%, 20=14.45%, 50=21.22%, 100=17.15%, 250=36.75% lat (msec) : 500=6.61%, 750=0.36%, 1000=0.03%, 2000=0.03% cpu : usr=0.03%, sys=0.88%, ctx=4941, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145069: Wed Aug 26 08:05:16 2026 read: IOPS=4, BW=19.3KiB/s (19.8kB/s)(6052KiB/313597msec) clat (msec): min=5, max=597, avg=38.08, stdev=40.42 lat (msec): min=5, max=597, avg=38.08, stdev=40.42 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 39], 80.00th=[ 54], 90.00th=[ 82], 95.00th=[ 113], | 99.00th=[ 182], 99.50th=[ 224], 99.90th=[ 518], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 7, max= 104, per=29.98%, avg=22.79, stdev=15.49, samples=512 iops : min= 1, max= 26, avg= 5.08, stdev= 3.93, samples=512 write: IOPS=4, BW=19.9KiB/s (20.4kB/s)(6236KiB/313597msec); 0 zone resets clat (msec): min=35, max=1228, avg=164.09, stdev=84.14 lat (msec): min=35, max=1228, avg=164.09, stdev=84.14 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 71], 10.00th=[ 84], 20.00th=[ 103], | 30.00th=[ 116], 40.00th=[ 132], 50.00th=[ 146], 60.00th=[ 165], | 70.00th=[ 186], 80.00th=[ 215], 90.00th=[ 266], 95.00th=[ 309], | 99.00th=[ 439], 99.50th=[ 542], 99.90th=[ 852], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7, max= 63, per=24.88%, avg=19.66, stdev= 9.22, samples=608 iops : min= 1, max= 15, avg= 4.29, stdev= 2.37, samples=608 lat (msec) : 10=3.19%, 20=15.49%, 50=20.57%, 100=16.18%, 250=37.99% lat (msec) : 500=6.15%, 750=0.36%, 1000=0.03%, 2000=0.03% cpu : usr=0.03%, sys=0.88%, ctx=4974, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=76.3KiB/s (78.1kB/s), 18.9KiB/s-19.3KiB/s (19.4kB/s-19.8kB/s), io=23.4MiB (24.6MB), run=312329-314679msec WRITE: bw=79.9KiB/s (81.8kB/s), 19.9KiB/s-20.2KiB/s (20.4kB/s-20.7kB/s), io=24.6MiB (25.7MB), run=312329-314679msec 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=145141: Wed Aug 26 08:05:56 2026 read: IOPS=11, BW=186KiB/s (191kB/s)(5920KiB/31766msec) clat (usec): min=22, max=318727, avg=45072.31, stdev=40523.09 lat (usec): min=22, max=318728, avg=45104.23, stdev=40512.79 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 53], 10.00th=[ 60], 20.00th=[ 253], | 30.00th=[ 23725], 40.00th=[ 31065], 50.00th=[ 39060], 60.00th=[ 46400], | 70.00th=[ 57934], 80.00th=[ 70779], 90.00th=[ 90702], 95.00th=[121111], | 99.00th=[164627], 99.50th=[229639], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 62, max= 380, per=24.53%, avg=184.98, stdev=76.06, samples=62 iops : min= 3, max= 23, avg=10.81, stdev= 4.81, samples=62 write: IOPS=12, BW=200KiB/s (205kB/s)(6368KiB/31766msec); 0 zone resets clat (usec): min=1430, max=206753, avg=37436.33, stdev=39278.73 lat (usec): min=1431, max=206756, avg=37438.18, stdev=39278.71 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 1778], 10.00th=[ 3064], 20.00th=[ 5538], | 30.00th=[ 9241], 40.00th=[ 14484], 50.00th=[ 23200], 60.00th=[ 35914], | 70.00th=[ 47449], 80.00th=[ 66847], 90.00th=[ 89654], 95.00th=[123208], | 99.00th=[177210], 99.50th=[189793], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 31, max= 375, per=25.26%, avg=200.31, stdev=83.42, samples=62 iops : min= 1, max= 23, avg=11.77, stdev= 5.21, samples=62 lat (usec) : 50=1.82%, 100=6.77%, 250=0.91%, 500=0.39%, 750=0.13% lat (msec) : 2=3.26%, 4=4.04%, 10=8.98%, 20=10.42%, 50=30.08% lat (msec) : 100=26.04%, 250=7.03%, 500=0.13% cpu : usr=0.06%, sys=5.21%, ctx=1481, 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=145142: Wed Aug 26 08:05:56 2026 read: IOPS=11, BW=182KiB/s (187kB/s)(5744KiB/31523msec) clat (usec): min=39, max=386123, avg=46099.16, stdev=42244.42 lat (usec): min=39, max=386124, avg=46100.26, stdev=42244.45 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 66], 20.00th=[ 12649], | 30.00th=[ 24511], 40.00th=[ 32900], 50.00th=[ 39060], 60.00th=[ 47449], | 70.00th=[ 56886], 80.00th=[ 70779], 90.00th=[ 98042], 95.00th=[117965], | 99.00th=[183501], 99.50th=[229639], 99.90th=[387974], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 62, max= 415, per=24.05%, avg=181.31, stdev=78.28, samples=62 iops : min= 3, max= 25, avg=10.58, stdev= 4.94, samples=62 write: IOPS=12, BW=208KiB/s (213kB/s)(6544KiB/31523msec); 0 zone resets clat (usec): min=1452, max=272060, avg=36502.58, stdev=42339.42 lat (usec): min=1453, max=272062, avg=36509.04, stdev=42336.88 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1762], 10.00th=[ 2474], 20.00th=[ 4555], | 30.00th=[ 7701], 40.00th=[ 11731], 50.00th=[ 19006], 60.00th=[ 30016], | 70.00th=[ 46400], 80.00th=[ 64226], 90.00th=[ 91751], 95.00th=[116917], | 99.00th=[183501], 99.50th=[193987], 99.90th=[270533], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 31, max= 506, per=26.07%, avg=206.74, stdev=110.69, samples=62 iops : min= 1, max= 31, avg=12.18, stdev= 7.00, samples=62 lat (usec) : 50=0.65%, 100=6.51%, 250=0.65%, 500=0.52% lat (msec) : 2=3.52%, 4=6.25%, 10=10.03%, 20=10.42%, 50=28.65% lat (msec) : 100=24.09%, 250=8.46%, 500=0.26% cpu : usr=0.05%, sys=5.34%, ctx=1478, 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=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=145143: Wed Aug 26 08:05:56 2026 read: IOPS=12, BW=200KiB/s (205kB/s)(6256KiB/31277msec) clat (usec): min=34, max=295315, avg=43739.75, stdev=40410.00 lat (usec): min=34, max=295317, avg=43740.91, stdev=40410.29 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 61], 20.00th=[ 137], | 30.00th=[ 21890], 40.00th=[ 29754], 50.00th=[ 37487], 60.00th=[ 46400], | 70.00th=[ 57934], 80.00th=[ 72877], 90.00th=[ 89654], 95.00th=[107480], | 99.00th=[179307], 99.50th=[267387], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 63, max= 477, per=26.73%, avg=201.51, stdev=87.80, samples=61 iops : min= 3, max= 29, avg=11.84, stdev= 5.54, samples=61 write: IOPS=12, BW=193KiB/s (197kB/s)(6032KiB/31277msec); 0 zone resets clat (usec): min=1356, max=184214, avg=37344.42, stdev=37408.54 lat (usec): min=1358, max=184216, avg=37359.84, stdev=37424.25 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1745], 10.00th=[ 2180], 20.00th=[ 5997], | 30.00th=[ 9765], 40.00th=[ 16319], 50.00th=[ 24773], 60.00th=[ 34341], | 70.00th=[ 50594], 80.00th=[ 65274], 90.00th=[ 89654], 95.00th=[117965], | 99.00th=[173016], 99.50th=[177210], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 31, max= 510, per=24.09%, avg=191.05, stdev=93.93, samples=61 iops : min= 1, max= 31, avg=11.18, stdev= 5.95, samples=61 lat (usec) : 50=1.04%, 100=8.46%, 250=1.30%, 500=0.26%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=4.56%, 4=3.12%, 10=7.81%, 20=8.98%, 50=30.73% lat (msec) : 100=26.43%, 250=6.64%, 500=0.26% cpu : usr=0.07%, sys=5.35%, ctx=1443, 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=145144: Wed Aug 26 08:05:56 2026 read: IOPS=12, BW=195KiB/s (200kB/s)(6032KiB/30926msec) clat (usec): min=34, max=218666, avg=40418.06, stdev=35485.94 lat (usec): min=34, max=218666, avg=40420.46, stdev=35486.06 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 63], 20.00th=[ 85], | 30.00th=[ 18220], 40.00th=[ 30278], 50.00th=[ 37487], 60.00th=[ 43254], | 70.00th=[ 54264], 80.00th=[ 67634], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[143655], 99.50th=[170918], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 31, max= 372, per=25.76%, avg=194.21, stdev=69.26, samples=61 iops : min= 1, max= 23, avg=11.39, stdev= 4.39, samples=61 write: IOPS=12, BW=202KiB/s (207kB/s)(6256KiB/30926msec); 0 zone resets clat (usec): min=1333, max=254563, avg=39916.55, stdev=42122.00 lat (usec): min=1335, max=254595, avg=39918.56, stdev=42122.36 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1795], 10.00th=[ 2835], 20.00th=[ 5407], | 30.00th=[ 10028], 40.00th=[ 15664], 50.00th=[ 25822], 60.00th=[ 34866], | 70.00th=[ 52167], 80.00th=[ 68682], 90.00th=[ 98042], 95.00th=[124257], | 99.00th=[181404], 99.50th=[208667], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 31, max= 512, per=25.47%, avg=201.95, stdev=81.67, samples=61 iops : min= 1, max= 32, avg=11.87, stdev= 5.16, samples=61 lat (usec) : 50=0.91%, 100=9.38%, 250=1.43%, 500=0.39%, 1000=0.13% lat (msec) : 2=3.12%, 4=4.82%, 10=8.07%, 20=9.24%, 50=30.60% lat (msec) : 100=23.70%, 250=8.07%, 500=0.13% cpu : usr=0.07%, sys=5.68%, ctx=1432, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=754KiB/s (772kB/s), 182KiB/s-200KiB/s (187kB/s-205kB/s), io=23.4MiB (24.5MB), run=30926-31766msec WRITE: bw=793KiB/s (812kB/s), 193KiB/s-208KiB/s (197kB/s-213kB/s), io=24.6MiB (25.8MB), run=30926-31766msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145145: Wed Aug 26 08:06:41 2026 read: IOPS=4, BW=77.7KiB/s (79.6kB/s)(5920KiB/76181msec) clat (msec): min=7, max=356, avg=44.35, stdev=48.94 lat (msec): min=7, max=356, avg=44.35, stdev=48.94 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 57], 90.00th=[ 94], 95.00th=[ 150], | 99.00th=[ 275], 99.50th=[ 338], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 411, per=28.03%, avg=86.89, stdev=57.33, samples=133 iops : min= 1, max= 25, avg= 4.62, stdev= 3.62, samples=133 write: IOPS=5, BW=83.6KiB/s (85.6kB/s)(6368KiB/76181msec); 0 zone resets clat (msec): min=35, max=507, avg=149.78, stdev=70.03 lat (msec): min=35, max=507, avg=149.78, stdev=70.04 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 71], 10.00th=[ 83], 20.00th=[ 97], | 30.00th=[ 107], 40.00th=[ 122], 50.00th=[ 134], 60.00th=[ 150], | 70.00th=[ 167], 80.00th=[ 190], 90.00th=[ 232], 95.00th=[ 284], | 99.00th=[ 418], 99.50th=[ 468], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 30, max= 192, per=26.04%, avg=84.88, stdev=36.73, samples=147 iops : min= 1, max= 12, avg= 4.49, stdev= 2.39, samples=147 lat (msec) : 10=1.69%, 20=12.63%, 50=23.57%, 100=17.84%, 250=39.71% lat (msec) : 500=4.43%, 750=0.13% cpu : usr=0.02%, sys=1.06%, ctx=1259, 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=145146: Wed Aug 26 08:06:41 2026 read: IOPS=4, BW=74.4KiB/s (76.2kB/s)(5744KiB/77209msec) clat (msec): min=6, max=446, avg=40.62, stdev=45.75 lat (msec): min=6, max=446, avg=40.63, stdev=45.75 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 40], 80.00th=[ 53], 90.00th=[ 87], 95.00th=[ 123], | 99.00th=[ 239], 99.50th=[ 305], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 21, max= 319, per=28.98%, avg=89.84, stdev=59.65, samples=126 iops : min= 1, max= 19, avg= 4.82, stdev= 3.74, samples=126 write: IOPS=5, BW=84.8KiB/s (86.8kB/s)(6544KiB/77209msec); 0 zone resets clat (msec): min=43, max=602, avg=152.98, stdev=75.93 lat (msec): min=43, max=602, avg=152.98, stdev=75.93 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 72], 10.00th=[ 80], 20.00th=[ 94], | 30.00th=[ 111], 40.00th=[ 122], 50.00th=[ 136], 60.00th=[ 148], | 70.00th=[ 174], 80.00th=[ 197], 90.00th=[ 251], 95.00th=[ 296], | 99.00th=[ 409], 99.50th=[ 456], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 29, max= 192, per=26.73%, avg=87.15, stdev=35.66, samples=147 iops : min= 1, max= 12, avg= 4.64, stdev= 2.31, samples=147 lat (msec) : 10=3.26%, 20=14.19%, 50=19.27%, 100=19.53%, 250=38.02% lat (msec) : 500=5.60%, 750=0.13% cpu : usr=0.04%, sys=0.98%, ctx=1238, 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=145147: Wed Aug 26 08:06:41 2026 read: IOPS=5, BW=83.3KiB/s (85.3kB/s)(6256KiB/75065msec) clat (msec): min=6, max=400, avg=39.43, stdev=43.11 lat (msec): min=6, max=400, avg=39.43, stdev=43.11 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 38], 80.00th=[ 48], 90.00th=[ 81], 95.00th=[ 115], | 99.00th=[ 218], 99.50th=[ 368], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 29, max= 310, per=29.70%, avg=92.07, stdev=63.93, samples=134 iops : min= 1, max= 19, avg= 4.96, stdev= 4.06, samples=134 write: IOPS=5, BW=80.4KiB/s (82.3kB/s)(6032KiB/75065msec); 0 zone resets clat (msec): min=41, max=579, avg=157.63, stdev=73.69 lat (msec): min=41, max=579, avg=157.63, stdev=73.69 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 72], 10.00th=[ 86], 20.00th=[ 103], | 30.00th=[ 116], 40.00th=[ 128], 50.00th=[ 140], 60.00th=[ 161], | 70.00th=[ 178], 80.00th=[ 201], 90.00th=[ 245], 95.00th=[ 313], | 99.00th=[ 409], 99.50th=[ 485], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 31, max= 159, per=25.39%, avg=82.76, stdev=33.03, samples=143 iops : min= 1, max= 9, avg= 4.36, stdev= 2.15, samples=143 lat (msec) : 10=2.47%, 20=14.58%, 50=24.61%, 100=14.71%, 250=39.06% lat (msec) : 500=4.43%, 750=0.13% cpu : usr=0.04%, sys=1.04%, ctx=1321, 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=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=145148: Wed Aug 26 08:06:41 2026 read: IOPS=4, BW=78.8KiB/s (80.7kB/s)(6032KiB/76529msec) clat (msec): min=6, max=450, avg=41.01, stdev=46.40 lat (msec): min=6, max=450, avg=41.01, stdev=46.40 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 53], 90.00th=[ 82], 95.00th=[ 121], | 99.00th=[ 259], 99.50th=[ 368], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 29, max= 319, per=31.56%, avg=97.83, stdev=62.18, samples=121 iops : min= 1, max= 19, avg= 5.31, stdev= 3.96, samples=121 write: IOPS=5, BW=81.7KiB/s (83.7kB/s)(6256KiB/76529msec); 0 zone resets clat (msec): min=38, max=522, avg=155.72, stdev=72.85 lat (msec): min=38, max=522, avg=155.72, stdev=72.85 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 67], 10.00th=[ 81], 20.00th=[ 97], | 30.00th=[ 113], 40.00th=[ 127], 50.00th=[ 144], 60.00th=[ 157], | 70.00th=[ 176], 80.00th=[ 205], 90.00th=[ 247], 95.00th=[ 292], | 99.00th=[ 430], 99.50th=[ 456], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 30, max= 191, per=25.87%, avg=84.34, stdev=33.35, samples=146 iops : min= 1, max= 11, avg= 4.46, stdev= 2.16, samples=146 lat (msec) : 10=1.82%, 20=13.54%, 50=23.57%, 100=17.32%, 250=38.54% lat (msec) : 500=5.08%, 750=0.13% cpu : usr=0.03%, sys=1.03%, ctx=1308, 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=310KiB/s (318kB/s), 74.4KiB/s-83.3KiB/s (76.2kB/s-85.3kB/s), io=23.4MiB (24.5MB), run=75065-77209msec WRITE: bw=326KiB/s (334kB/s), 80.4KiB/s-84.8KiB/s (82.3kB/s-86.8kB/s), io=24.6MiB (25.8MB), run=75065-77209msec 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=145167: Wed Aug 26 08:06:58 2026 read: IOPS=1, BW=1701KiB/s (1742kB/s)(7168KiB/4213msec) clat (msec): min=86, max=321, avg=155.99, stdev=90.39 lat (msec): min=86, max=321, avg=155.99, stdev=90.39 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 92], | 30.00th=[ 94], 40.00th=[ 94], 50.00th=[ 115], 60.00th=[ 144], | 70.00th=[ 144], 80.00th=[ 241], 90.00th=[ 321], 95.00th=[ 321], | 99.00th=[ 321], 99.50th=[ 321], 99.90th=[ 321], 99.95th=[ 321], | 99.99th=[ 321] bw ( KiB/s): min= 1868, max= 4129, per=89.30%, avg=3316.67, stdev=1257.66, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1215KiB/s (1244kB/s)(5120KiB/4213msec); 0 zone resets clat (msec): min=207, max=1460, avg=590.06, stdev=508.03 lat (msec): min=207, max=1460, avg=590.15, stdev=508.02 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 207], 10.00th=[ 207], 20.00th=[ 207], | 30.00th=[ 326], 40.00th=[ 326], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 1376, max= 1996, per=34.69%, avg=1804.00, stdev=290.82, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (msec) : 100=25.00%, 250=33.33%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=3.44%, ctx=73, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145168: Wed Aug 26 08:06:58 2026 read: IOPS=0, BW=371KiB/s (380kB/s)(2048KiB/5513msec) clat (msec): min=129, max=492, avg=311.00, stdev=256.58 lat (msec): min=129, max=492, avg=311.00, stdev=256.58 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 130], 10.00th=[ 130], 20.00th=[ 130], | 30.00th=[ 130], 40.00th=[ 130], 50.00th=[ 130], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] bw ( KiB/s): min= 2003, max= 2043, per=54.47%, avg=2023.00, stdev=28.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1857KiB/s (1902kB/s)(10.0MiB/5513msec); 0 zone resets clat (msec): min=146, max=1235, avg=472.73, stdev=416.70 lat (msec): min=146, max=1235, avg=472.85, stdev=416.67 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 169], | 30.00th=[ 180], 40.00th=[ 288], 50.00th=[ 300], 60.00th=[ 305], | 70.00th=[ 338], 80.00th=[ 535], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 1969, max= 4087, per=50.02%, avg=2601.14, stdev=1007.26, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 2000=16.67% cpu : usr=0.04%, sys=3.83%, ctx=74, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145169: Wed Aug 26 08:06:58 2026 read: IOPS=1, BW=1289KiB/s (1320kB/s)(6144KiB/4765msec) clat (msec): min=91, max=833, avg=346.65, stdev=259.48 lat (msec): min=91, max=833, avg=346.65, stdev=259.48 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 330], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 1969, max= 2039, per=53.97%, avg=2004.40, stdev=30.64, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1289KiB/s (1320kB/s)(6144KiB/4765msec); 0 zone resets clat (msec): min=149, max=1327, avg=438.63, stdev=443.72 lat (msec): min=149, max=1327, avg=438.72, stdev=443.73 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 150], 10.00th=[ 150], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 226], 50.00th=[ 226], 60.00th=[ 334], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 1954, max= 4023, per=48.13%, avg=2502.75, stdev=1014.00, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.04%, sys=2.71%, ctx=62, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=145170: Wed Aug 26 08:06:58 2026 read: IOPS=1, BW=1155KiB/s (1182kB/s)(5120KiB/4434msec) clat (msec): min=113, max=525, avg=253.34, stdev=163.88 lat (msec): min=113, max=525, avg=253.34, stdev=163.88 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 114], | 30.00th=[ 157], 40.00th=[ 157], 50.00th=[ 192], 60.00th=[ 192], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 527], 95.00th=[ 527], | 99.00th=[ 527], 99.50th=[ 527], 99.90th=[ 527], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 3953, max= 3992, per=100.00%, avg=3972.50, stdev=27.58, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1617KiB/s (1655kB/s)(7168KiB/4434msec); 0 zone resets clat (msec): min=98, max=971, avg=428.50, stdev=292.54 lat (msec): min=98, max=971, avg=428.59, stdev=292.53 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 201], | 30.00th=[ 317], 40.00th=[ 317], 50.00th=[ 330], 60.00th=[ 472], | 70.00th=[ 472], 80.00th=[ 609], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1976, max= 3737, per=48.57%, avg=2525.40, stdev=773.30, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=3.27%, ctx=104, 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=3715KiB/s (3804kB/s), 371KiB/s-1701KiB/s (380kB/s-1742kB/s), io=20.0MiB (20.0MB), run=4213-5513msec WRITE: bw=5201KiB/s (5326kB/s), 1215KiB/s-1857KiB/s (1244kB/s-1902kB/s), io=28.0MiB (29.4MB), run=4213-5513msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145172: Wed Aug 26 08:06:58 2026 read: IOPS=1, BW=1948KiB/s (1995kB/s)(7168KiB/3679msec) clat (usec): min=1594, max=384800, avg=210149.51, stdev=127472.60 lat (usec): min=1596, max=384802, avg=210150.92, stdev=127472.79 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 1598], 10.00th=[ 1598], 20.00th=[116917], | 30.00th=[175113], 40.00th=[175113], 50.00th=[229639], 60.00th=[244319], | 70.00th=[244319], 80.00th=[320865], 90.00th=[383779], 95.00th=[383779], | 99.00th=[383779], 99.50th=[383779], 99.90th=[383779], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 2007, max= 4079, per=74.49%, avg=3098.67, stdev=1040.48, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1392KiB/s (1425kB/s)(5120KiB/3679msec); 0 zone resets clat (msec): min=191, max=812, avg=440.73, stdev=236.69 lat (msec): min=191, max=812, avg=440.80, stdev=236.68 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 192], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 2035, max= 3878, per=45.51%, avg=2650.67, stdev=1062.90, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.16%, sys=13.13%, ctx=201, 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=145173: Wed Aug 26 08:06:58 2026 read: IOPS=0, BW=416KiB/s (426kB/s)(2048KiB/4922msec) clat (msec): min=114, max=741, avg=427.57, stdev=443.32 lat (msec): min=114, max=741, avg=427.57, stdev=443.32 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 114], | 30.00th=[ 114], 40.00th=[ 114], 50.00th=[ 114], 60.00th=[ 743], | 70.00th=[ 743], 80.00th=[ 743], 90.00th=[ 743], 95.00th=[ 743], | 99.00th=[ 743], 99.50th=[ 743], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 1939, max= 2007, per=47.43%, avg=1973.00, stdev=48.08, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2080KiB/s (2130kB/s)(10.0MiB/4922msec); 0 zone resets clat (msec): min=142, max=1031, avg=404.12, stdev=268.74 lat (msec): min=142, max=1031, avg=404.28, stdev=268.72 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 157], | 30.00th=[ 230], 40.00th=[ 271], 50.00th=[ 338], 60.00th=[ 380], | 70.00th=[ 405], 80.00th=[ 414], 90.00th=[ 676], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 1932, max= 4079, per=45.24%, avg=2635.50, stdev=1019.44, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 1.03, samples=6 lat (msec) : 250=33.33%, 500=41.67%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=12.27%, ctx=184, 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=145174: Wed Aug 26 08:06:58 2026 read: IOPS=1, BW=1259KiB/s (1289kB/s)(6144KiB/4880msec) clat (msec): min=78, max=544, avg=276.45, stdev=171.65 lat (msec): min=78, max=544, avg=276.45, stdev=171.65 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 101], | 30.00th=[ 101], 40.00th=[ 288], 50.00th=[ 288], 60.00th=[ 317], | 70.00th=[ 334], 80.00th=[ 334], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1906, max= 4079, per=60.40%, avg=2512.75, stdev=1045.88, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1259KiB/s (1289kB/s)(6144KiB/4880msec); 0 zone resets clat (msec): min=210, max=1229, avg=536.66, stdev=387.60 lat (msec): min=210, max=1229, avg=536.75, stdev=387.59 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 228], | 30.00th=[ 228], 40.00th=[ 326], 50.00th=[ 326], 60.00th=[ 542], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 1932, max= 3195, per=38.25%, avg=2228.00, stdev=542.95, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=16.67%, 500=33.33%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=11.38%, ctx=167, 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=145175: Wed Aug 26 08:06:58 2026 read: IOPS=1, BW=1132KiB/s (1159kB/s)(5120KiB/4524msec) clat (usec): min=485, max=792769, avg=219067.31, stdev=343275.70 lat (usec): min=486, max=792770, avg=219068.39, stdev=343275.55 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[ 486], | 30.00th=[ 1532], 40.00th=[ 1532], 50.00th=[ 13042], 60.00th=[ 13042], | 70.00th=[287310], 80.00th=[287310], 90.00th=[792724], 95.00th=[792724], | 99.00th=[792724], 99.50th=[792724], 99.90th=[792724], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 3878, max= 4063, per=95.44%, avg=3970.50, stdev=130.81, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1584KiB/s (1622kB/s)(7168KiB/4524msec); 0 zone resets clat (msec): min=153, max=928, avg=488.69, stdev=266.40 lat (msec): min=153, max=928, avg=488.92, stdev=266.49 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 241], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 472], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 676], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 1799, max= 4087, per=40.63%, avg=2366.80, stdev=966.10, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=8.33% lat (msec) : 2=8.33%, 20=8.33%, 250=16.67%, 500=25.00%, 750=16.67% lat (msec) : 1000=16.67% cpu : usr=0.00%, sys=8.98%, ctx=119, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4161KiB/s (4261kB/s), 416KiB/s-1948KiB/s (426kB/s-1995kB/s), io=20.0MiB (20.0MB), run=3679-4922msec WRITE: bw=5825KiB/s (5965kB/s), 1259KiB/s-2080KiB/s (1289kB/s-2130kB/s), io=28.0MiB (29.4MB), run=3679-4922msec 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=145187: Wed Aug 26 08:07:11 2026 read: IOPS=1, BW=5483KiB/s (5615kB/s)(12.0MiB/2241msec) clat (msec): min=557, max=759, avg=686.80, stdev=111.96 lat (msec): min=557, max=759, avg=686.80, stdev=111.96 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 743], 50.00th=[ 743], 60.00th=[ 743], | 70.00th=[ 760], 80.00th=[ 760], 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= 8143, max= 8175, per=100.00%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=9.24%, ctx=83, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=145189: Wed Aug 26 08:07:11 2026 read: IOPS=0, BW=1932KiB/s (1978kB/s)(4096KiB/2120msec) clat (nsec): min=168585k, max=168585k, avg=168585245.00, stdev= 0.00 lat (nsec): min=168588k, max=168588k, avg=168587901.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 169], 60.00th=[ 169], | 70.00th=[ 169], 80.00th=[ 169], 90.00th=[ 169], 95.00th=[ 169], | 99.00th=[ 169], 99.50th=[ 169], 99.90th=[ 169], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 7340, max= 7340, per=100.00%, avg=7340.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3864KiB/s (3957kB/s)(8192KiB/2120msec); 0 zone resets clat (msec): min=888, max=897, avg=892.90, stdev= 6.75 lat (msec): min=888, max=902, avg=895.31, stdev= 9.76 clat percentiles (msec): | 1.00th=[ 885], 5.00th=[ 885], 10.00th=[ 885], 20.00th=[ 885], | 30.00th=[ 885], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 902], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 8175, max= 8175, per=69.76%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=66.67% cpu : usr=0.00%, sys=11.70%, ctx=128, 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=145190: Wed Aug 26 08:07:11 2026 write: IOPS=1, BW=4395KiB/s (4500kB/s)(12.0MiB/2796msec); 0 zone resets clat (msec): min=332, max=1190, avg=835.18, stdev=447.57 lat (msec): min=332, max=1190, avg=835.52, stdev=447.55 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 986], 50.00th=[ 986], 60.00th=[ 986], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8175, max= 8192, per=69.83%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.19%, 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 rand-rw: (groupid=0, jobs=1): err= 0: pid=145191: Wed Aug 26 08:07:11 2026 write: IOPS=1, BW=8116KiB/s (8311kB/s)(12.0MiB/1514msec); 0 zone resets clat (msec): min=300, max=701, avg=452.09, stdev=217.79 lat (msec): min=300, max=701, avg=452.51, stdev=217.54 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 300], | 30.00th=[ 300], 40.00th=[ 355], 50.00th=[ 355], 60.00th=[ 355], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7393, max= 8143, per=66.29%, avg=7768.00, stdev=530.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=12.49%, ctx=68, 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=7311KiB/s (7486kB/s), 1932KiB/s-5483KiB/s (1978kB/s-5615kB/s), io=16.0MiB (16.8MB), run=2120-2241msec WRITE: bw=11.4MiB/s (12.0MB/s), 3864KiB/s-8116KiB/s (3957kB/s-8311kB/s), io=32.0MiB (33.6MB), run=1514-2796msec rand-rw: (groupid=0, jobs=1): err= 0: pid=145184: Wed Aug 26 08:07:12 2026 read: IOPS=1, BW=5882KiB/s (6023kB/s)(12.0MiB/2089msec) clat (msec): min=510, max=735, avg=602.59, stdev=118.01 lat (msec): min=510, max=735, avg=602.59, stdev=118.01 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=26.77%, ctx=453, 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=145185: Wed Aug 26 08:07:12 2026 read: IOPS=0, BW=1461KiB/s (1496kB/s)(4096KiB/2803msec) clat (nsec): min=633933k, max=633933k, avg=633933389.00, stdev= 0.00 lat (nsec): min=633936k, max=633936k, avg=633935954.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 634], 50.00th=[ 634], 60.00th=[ 634], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] 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=2923KiB/s (2993kB/s)(8192KiB/2803msec); 0 zone resets clat (msec): min=682, max=1273, avg=978.21, stdev=418.15 lat (msec): min=682, max=1274, avg=978.58, stdev=418.24 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 684], 50.00th=[ 684], 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= 8159, max= 8159, per=83.31%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.00%, ctx=189, 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=145186: Wed Aug 26 08:07:12 2026 write: IOPS=0, BW=3672KiB/s (3761kB/s)(12.0MiB/3346msec); 0 zone resets clat (msec): min=324, max=1956, avg=1062.30, stdev=827.49 lat (msec): min=324, max=1957, avg=1063.48, stdev=827.21 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 326], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 1955], 80.00th=[ 1955], 90.00th=[ 1955], 95.00th=[ 1955], | 99.00th=[ 1955], 99.50th=[ 1955], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 8126, max= 8175, per=83.23%, avg=8150.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.03%, sys=4.45%, ctx=60, 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=145188: Wed Aug 26 08:07:12 2026 write: IOPS=1, BW=4894KiB/s (5011kB/s)(12.0MiB/2511msec); 0 zone resets clat (msec): min=626, max=1027, avg=769.92, stdev=223.56 lat (msec): min=626, max=1027, avg=770.22, stdev=223.61 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 1028], 80.00th=[ 1028], 90.00th=[ 1028], 95.00th=[ 1028], | 99.00th=[ 1028], 99.50th=[ 1028], 99.90th=[ 1028], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 8110, max= 8159, per=83.06%, avg=8134.50, stdev=34.65, 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=9.08%, ctx=68, 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=5845KiB/s (5985kB/s), 1461KiB/s-5882KiB/s (1496kB/s-6023kB/s), io=16.0MiB (16.8MB), run=2089-2803msec WRITE: bw=9793KiB/s (10.0MB/s), 2923KiB/s-4894KiB/s (2993kB/s-5011kB/s), io=32.0MiB (33.6MB), run=2511-3346msec