== sanity test 398b: DIO and buffer IO race ============== 09:12:03 (1787317923) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.63096 s, 10.9 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=144210: Fri Aug 21 09:14:25 2026 read: IOPS=12, BW=48.4KiB/s (49.5kB/s)(5992KiB/123871msec) clat (usec): min=37, max=382037, avg=41343.14, stdev=29867.91 lat (usec): min=37, max=382038, avg=41353.37, stdev=29871.20 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 73], 10.00th=[ 13698], 20.00th=[ 21103], | 30.00th=[ 26346], 40.00th=[ 30540], 50.00th=[ 35914], 60.00th=[ 42730], | 70.00th=[ 50594], 80.00th=[ 58459], 90.00th=[ 72877], 95.00th=[ 89654], | 99.00th=[135267], 99.50th=[189793], 99.90th=[274727], 99.95th=[383779], | 99.99th=[383779] bw ( KiB/s): min= 7, max= 111, per=25.75%, avg=48.66, stdev=19.66, samples=241 iops : min= 1, max= 27, avg=11.49, stdev= 4.90, samples=241 write: IOPS=12, BW=50.8KiB/s (52.0kB/s)(6296KiB/123871msec); 0 zone resets clat (usec): min=1241, max=1089.9k, avg=39083.08, stdev=45943.33 lat (usec): min=1242, max=1089.9k, avg=39087.51, stdev=45942.28 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1680], 10.00th=[ 2638], | 20.00th=[ 5669], 30.00th=[ 10552], 40.00th=[ 20579], | 50.00th=[ 29492], 60.00th=[ 38536], 70.00th=[ 48497], | 80.00th=[ 64750], 90.00th=[ 87557], 95.00th=[ 109577], | 99.00th=[ 164627], 99.50th=[ 206570], 99.90th=[ 308282], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 127, per=25.47%, avg=50.43, stdev=20.13, samples=244 iops : min= 1, max= 31, avg=11.94, stdev= 5.05, samples=244 lat (usec) : 50=0.13%, 100=3.16%, 250=0.36%, 500=0.10%, 750=0.10% lat (usec) : 1000=0.10% lat (msec) : 2=3.94%, 4=3.52%, 10=7.78%, 20=9.77%, 50=41.37% lat (msec) : 100=24.58%, 250=4.92%, 500=0.16%, 2000=0.03% cpu : usr=0.09%, sys=6.03%, ctx=6808, 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=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=144211: Fri Aug 21 09:14:25 2026 read: IOPS=11, BW=46.9KiB/s (48.0kB/s)(5940KiB/126617msec) clat (usec): min=38, max=323707, avg=42680.49, stdev=30856.06 lat (usec): min=38, max=323709, avg=42694.53, stdev=30864.90 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 75], 10.00th=[ 14746], 20.00th=[ 21890], | 30.00th=[ 26608], 40.00th=[ 31589], 50.00th=[ 36439], 60.00th=[ 42730], | 70.00th=[ 50594], 80.00th=[ 60556], 90.00th=[ 78119], 95.00th=[ 93848], | 99.00th=[154141], 99.50th=[191890], 99.90th=[274727], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 7, max= 111, per=24.59%, avg=46.47, stdev=19.93, samples=249 iops : min= 1, max= 27, avg=10.94, stdev= 4.99, samples=249 write: IOPS=12, BW=50.1KiB/s (51.3kB/s)(6348KiB/126617msec); 0 zone resets clat (usec): min=1182, max=1057.8k, avg=39542.31, stdev=47619.86 lat (usec): min=1183, max=1057.8k, avg=39544.75, stdev=47619.52 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1598], 10.00th=[ 2704], | 20.00th=[ 5473], 30.00th=[ 10552], 40.00th=[ 19530], | 50.00th=[ 29230], 60.00th=[ 38536], 70.00th=[ 51119], | 80.00th=[ 66323], 90.00th=[ 86508], 95.00th=[ 108528], | 99.00th=[ 179307], 99.50th=[ 240124], 99.90th=[ 476054], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 7, max= 142, per=25.16%, avg=49.81, stdev=22.76, samples=248 iops : min= 1, max= 35, avg=11.77, stdev= 5.69, samples=248 lat (usec) : 50=0.16%, 100=2.93%, 250=0.39%, 500=0.10%, 750=0.07% lat (msec) : 2=3.87%, 4=3.68%, 10=7.94%, 20=9.70%, 50=40.49% lat (msec) : 100=25.36%, 250=5.01%, 500=0.26%, 2000=0.03% cpu : usr=0.09%, sys=6.09%, ctx=7082, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144212: Fri Aug 21 09:14:25 2026 read: IOPS=11, BW=47.6KiB/s (48.7kB/s)(6028KiB/126638msec) clat (usec): min=35, max=416636, avg=41283.18, stdev=29972.98 lat (usec): min=36, max=416637, avg=41285.80, stdev=29972.44 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 77], 10.00th=[ 13435], 20.00th=[ 20841], | 30.00th=[ 26084], 40.00th=[ 30802], 50.00th=[ 35914], 60.00th=[ 41681], | 70.00th=[ 49021], 80.00th=[ 59507], 90.00th=[ 76022], 95.00th=[ 90702], | 99.00th=[126354], 99.50th=[177210], 99.90th=[337642], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 7, max= 111, per=25.06%, avg=47.36, stdev=20.82, samples=248 iops : min= 1, max= 27, avg=11.17, stdev= 5.22, samples=248 write: IOPS=12, BW=49.4KiB/s (50.6kB/s)(6260KiB/126638msec); 0 zone resets clat (usec): min=1180, max=1043.5k, avg=40890.25, stdev=49667.40 lat (usec): min=1181, max=1043.5k, avg=40896.13, stdev=49670.74 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1582], 10.00th=[ 3032], | 20.00th=[ 6128], 30.00th=[ 11731], 40.00th=[ 22152], | 50.00th=[ 30802], 60.00th=[ 41157], 70.00th=[ 52691], | 80.00th=[ 66323], 90.00th=[ 89654], 95.00th=[ 111674], | 99.00th=[ 168821], 99.50th=[ 212861], 99.90th=[ 792724], | 99.95th=[1044382], 99.99th=[1044382] bw ( KiB/s): min= 7, max= 135, per=24.84%, avg=49.17, stdev=19.20, samples=248 iops : min= 1, max= 33, avg=11.62, stdev= 4.82, samples=248 lat (usec) : 50=0.13%, 100=2.96%, 250=0.59%, 500=0.07%, 750=0.07% lat (msec) : 2=3.65%, 4=3.52%, 10=7.42%, 20=9.67%, 50=41.34% lat (msec) : 100=25.62%, 250=4.72%, 500=0.20%, 1000=0.03%, 2000=0.03% cpu : usr=0.09%, sys=6.06%, ctx=6973, 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=144213: Fri Aug 21 09:14:25 2026 read: IOPS=12, BW=48.1KiB/s (49.3kB/s)(6052KiB/125784msec) clat (usec): min=32, max=349584, avg=41302.19, stdev=29503.14 lat (usec): min=32, max=349585, avg=41305.03, stdev=29503.22 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 78], 10.00th=[ 13829], 20.00th=[ 20841], | 30.00th=[ 25560], 40.00th=[ 30802], 50.00th=[ 35914], 60.00th=[ 42730], | 70.00th=[ 50594], 80.00th=[ 60031], 90.00th=[ 74974], 95.00th=[ 89654], | 99.00th=[141558], 99.50th=[175113], 99.90th=[254804], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 7, max= 111, per=25.23%, avg=47.69, stdev=18.13, samples=247 iops : min= 1, max= 27, avg=11.25, stdev= 4.55, samples=247 write: IOPS=12, BW=49.6KiB/s (50.8kB/s)(6236KiB/125784msec); 0 zone resets clat (usec): min=1165, max=1123.9k, avg=40280.62, stdev=47828.20 lat (usec): min=1165, max=1123.9k, avg=40288.12, stdev=47826.40 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 1598], 10.00th=[ 2573], | 20.00th=[ 5932], 30.00th=[ 10552], 40.00th=[ 20317], | 50.00th=[ 30802], 60.00th=[ 40633], 70.00th=[ 53740], | 80.00th=[ 66847], 90.00th=[ 88605], 95.00th=[ 106431], | 99.00th=[ 175113], 99.50th=[ 204473], 99.90th=[ 446694], | 99.95th=[1115685], 99.99th=[1115685] bw ( KiB/s): min= 7, max= 111, per=24.91%, avg=49.31, stdev=20.63, samples=246 iops : min= 1, max= 27, avg=11.65, stdev= 5.17, samples=246 lat (usec) : 50=0.23%, 100=3.03%, 250=0.49%, 500=0.26%, 750=0.03% lat (usec) : 1000=0.03% lat (msec) : 2=3.97%, 4=3.78%, 10=7.03%, 20=10.58%, 50=38.74% lat (msec) : 100=26.92%, 250=4.65%, 500=0.23%, 2000=0.03% cpu : usr=0.10%, sys=6.06%, ctx=7008, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=190KiB/s (194kB/s), 46.9KiB/s-48.4KiB/s (48.0kB/s-49.5kB/s), io=23.4MiB (24.6MB), run=123871-126638msec WRITE: bw=199KiB/s (203kB/s), 49.4KiB/s-50.8KiB/s (50.6kB/s-52.0kB/s), io=24.6MiB (25.7MB), run=123871-126638msec fio: pid=144218, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=144215: Fri Aug 21 09:16:40 2026 read: IOPS=5, BW=23.1KiB/s (23.7kB/s)(5992KiB/259411msec) clat (msec): min=5, max=948, avg=38.27, stdev=39.87 lat (msec): min=5, max=948, avg=38.28, stdev=39.87 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 51], 90.00th=[ 72], 95.00th=[ 93], | 99.00th=[ 180], 99.50th=[ 215], 99.90th=[ 355], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 103, per=30.79%, avg=25.25, stdev=16.57, samples=458 iops : min= 1, max= 25, avg= 5.67, stdev= 4.18, samples=458 write: IOPS=6, BW=24.3KiB/s (24.9kB/s)(6296KiB/259411msec); 0 zone resets clat (msec): min=25, max=838, avg=128.24, stdev=60.59 lat (msec): min=25, max=838, avg=128.24, stdev=60.59 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 60], 10.00th=[ 68], 20.00th=[ 82], | 30.00th=[ 92], 40.00th=[ 104], 50.00th=[ 115], 60.00th=[ 129], | 70.00th=[ 144], 80.00th=[ 169], 90.00th=[ 211], 95.00th=[ 241], | 99.00th=[ 309], 99.50th=[ 342], 99.90th=[ 575], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 63, per=27.90%, avg=23.99, stdev=10.12, samples=505 iops : min= 1, max= 15, avg= 5.36, stdev= 2.59, samples=505 lat (msec) : 10=1.99%, 20=12.11%, 50=25.85%, 100=25.52%, 250=32.39% lat (msec) : 500=2.05%, 750=0.03%, 1000=0.07% cpu : usr=0.05%, sys=1.59%, ctx=5885, 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=144216: Fri Aug 21 09:16:40 2026 read: IOPS=5, BW=22.8KiB/s (23.3kB/s)(5940KiB/261042msec) clat (msec): min=5, max=1163, avg=38.73, stdev=44.46 lat (msec): min=5, max=1163, avg=38.73, stdev=44.46 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 21], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 41], 80.00th=[ 53], 90.00th=[ 72], 95.00th=[ 102], | 99.00th=[ 182], 99.50th=[ 213], 99.90th=[ 435], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 95, per=30.92%, avg=25.35, stdev=16.46, samples=453 iops : min= 1, max= 23, avg= 5.71, stdev= 4.17, samples=453 write: IOPS=6, BW=24.3KiB/s (24.9kB/s)(6348KiB/261042msec); 0 zone resets clat (msec): min=29, max=853, avg=128.11, stdev=63.53 lat (msec): min=29, max=853, avg=128.11, stdev=63.53 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 58], 10.00th=[ 68], 20.00th=[ 81], | 30.00th=[ 91], 40.00th=[ 103], 50.00th=[ 115], 60.00th=[ 129], | 70.00th=[ 146], 80.00th=[ 169], 90.00th=[ 203], 95.00th=[ 243], | 99.00th=[ 334], 99.50th=[ 384], 99.90th=[ 584], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 71, per=27.92%, avg=24.01, stdev=10.73, samples=510 iops : min= 1, max= 17, avg= 5.36, stdev= 2.75, samples=510 lat (msec) : 10=2.96%, 20=11.49%, 50=24.45%, 100=26.86%, 250=31.74% lat (msec) : 500=2.41%, 750=0.03%, 1000=0.03%, 2000=0.03% cpu : usr=0.04%, sys=1.64%, ctx=5975, 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=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=144217: Fri Aug 21 09:16:40 2026 read: IOPS=5, BW=23.3KiB/s (23.9kB/s)(6028KiB/258246msec) clat (msec): min=6, max=446, avg=38.85, stdev=35.07 lat (msec): min=6, max=446, avg=38.85, stdev=35.07 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 35], | 70.00th=[ 41], 80.00th=[ 51], 90.00th=[ 77], 95.00th=[ 104], | 99.00th=[ 169], 99.50th=[ 207], 99.90th=[ 422], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 103, per=30.32%, avg=24.87, stdev=16.42, samples=468 iops : min= 1, max= 25, avg= 5.59, stdev= 4.13, samples=468 write: IOPS=6, BW=24.2KiB/s (24.8kB/s)(6260KiB/258246msec); 0 zone resets clat (msec): min=30, max=1225, avg=127.47, stdev=63.66 lat (msec): min=30, max=1225, avg=127.47, stdev=63.66 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 61], 10.00th=[ 69], 20.00th=[ 82], | 30.00th=[ 93], 40.00th=[ 104], 50.00th=[ 113], 60.00th=[ 127], | 70.00th=[ 144], 80.00th=[ 167], 90.00th=[ 201], 95.00th=[ 232], | 99.00th=[ 330], 99.50th=[ 359], 99.90th=[ 584], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7, max= 72, per=27.95%, avg=24.03, stdev=10.69, samples=502 iops : min= 1, max= 18, avg= 5.37, stdev= 2.74, samples=502 lat (msec) : 10=1.79%, 20=12.14%, 50=26.27%, 100=24.80%, 250=32.88% lat (msec) : 500=2.05%, 750=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.67%, ctx=5982, 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= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=144218: Fri Aug 21 09:16:40 2026 read: IOPS=5, BW=20.1KiB/s (20.6kB/s)(3584KiB/178079msec) clat (msec): min=6, max=430, avg=46.24, stdev=45.72 lat (msec): min=6, max=430, avg=46.25, stdev=45.72 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 25], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 52], 80.00th=[ 71], 90.00th=[ 103], 95.00th=[ 138], | 99.00th=[ 226], 99.50th=[ 264], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 7, max= 111, per=28.55%, avg=23.41, stdev=16.24, samples=295 iops : min= 1, max= 27, avg= 5.20, stdev= 4.10, samples=295 write: IOPS=5, BW=20.7KiB/s (21.2kB/s)(3688KiB/178079msec); 0 zone resets clat (msec): min=27, max=1363, avg=148.00, stdev=76.82 lat (msec): min=27, max=1363, avg=148.01, stdev=76.83 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 66], 10.00th=[ 81], 20.00th=[ 95], | 30.00th=[ 108], 40.00th=[ 121], 50.00th=[ 133], 60.00th=[ 150], | 70.00th=[ 171], 80.00th=[ 192], 90.00th=[ 230], 95.00th=[ 268], | 99.00th=[ 334], 99.50th=[ 376], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 7, max= 64, per=23.72%, avg=20.40, stdev=10.06, samples=346 iops : min= 1, max= 16, avg= 4.43, stdev= 2.56, samples=346 lat (msec) : 10=2.31%, 20=12.97%, 50=19.46%, 100=21.55%, 250=39.53% lat (msec) : 500=4.01%, 1000=0.05%, 2000=0.05% cpu : usr=0.04%, sys=1.35%, ctx=2953, majf=0, minf=22 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=897,922,0,0 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=82.5KiB/s (84.5kB/s), 20.1KiB/s-23.3KiB/s (20.6kB/s-23.9kB/s), io=21.0MiB (22.1MB), run=178079-261042msec WRITE: bw=86.5KiB/s (88.6kB/s), 20.7KiB/s-24.3KiB/s (21.2kB/s-24.9kB/s), io=22.1MiB (23.1MB), run=178079-261042msec 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=144277: Fri Aug 21 09:17:20 2026 read: IOPS=14, BW=231KiB/s (237kB/s)(5920KiB/25609msec) clat (usec): min=34, max=170956, avg=34815.27, stdev=28604.26 lat (usec): min=34, max=170956, avg=34816.65, stdev=28604.30 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 63], 10.00th=[ 70], 20.00th=[ 120], | 30.00th=[ 19268], 40.00th=[ 27395], 50.00th=[ 33424], 60.00th=[ 40109], | 70.00th=[ 46924], 80.00th=[ 57410], 90.00th=[ 68682], 95.00th=[ 80217], | 99.00th=[127402], 99.50th=[158335], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 62, max= 415, per=25.73%, avg=227.68, stdev=81.71, samples=50 iops : min= 3, max= 25, avg=13.46, stdev= 5.16, samples=50 write: IOPS=15, BW=249KiB/s (255kB/s)(6368KiB/25609msec); 0 zone resets clat (usec): min=1528, max=228825, avg=31326.68, stdev=35432.60 lat (usec): min=1530, max=228827, avg=31346.84, stdev=35422.62 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 2606], 10.00th=[ 4113], 20.00th=[ 5538], | 30.00th=[ 8029], 40.00th=[ 10683], 50.00th=[ 16909], 60.00th=[ 27919], | 70.00th=[ 37487], 80.00th=[ 54264], 90.00th=[ 76022], 95.00th=[ 96994], | 99.00th=[173016], 99.50th=[206570], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 30, max= 446, per=26.53%, avg=247.24, stdev=87.27, samples=50 iops : min= 1, max= 27, avg=14.70, stdev= 5.52, samples=50 lat (usec) : 50=0.91%, 100=7.42%, 250=2.60%, 500=0.26%, 750=0.13% lat (msec) : 2=1.43%, 4=4.17%, 10=13.93%, 20=10.81%, 50=33.72% lat (msec) : 100=21.09%, 250=3.52% cpu : usr=0.10%, sys=8.15%, ctx=1556, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144278: Fri Aug 21 09:17:20 2026 read: IOPS=13, BW=215KiB/s (220kB/s)(5744KiB/26695msec) clat (usec): min=43, max=154770, avg=36719.14, stdev=27480.14 lat (usec): min=44, max=154771, avg=36724.75, stdev=27480.48 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 67], 10.00th=[ 74], 20.00th=[ 12256], | 30.00th=[ 23725], 40.00th=[ 28443], 50.00th=[ 35914], 60.00th=[ 40109], | 70.00th=[ 47449], 80.00th=[ 56361], 90.00th=[ 70779], 95.00th=[ 90702], | 99.00th=[116917], 99.50th=[127402], 99.90th=[154141], 99.95th=[154141], | 99.99th=[154141] bw ( KiB/s): min= 30, max= 383, per=24.24%, avg=214.54, stdev=91.32, samples=52 iops : min= 1, max= 23, avg=12.63, stdev= 5.77, samples=52 write: IOPS=15, BW=245KiB/s (251kB/s)(6544KiB/26695msec); 0 zone resets clat (usec): min=1571, max=277772, avg=32805.40, stdev=35556.35 lat (usec): min=1573, max=277774, avg=32808.22, stdev=35557.42 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 4], 20.00th=[ 7], | 30.00th=[ 10], 40.00th=[ 13], 50.00th=[ 23], 60.00th=[ 31], | 70.00th=[ 41], 80.00th=[ 56], 90.00th=[ 74], 95.00th=[ 99], | 99.00th=[ 163], 99.50th=[ 211], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 60, max= 446, per=26.17%, avg=243.88, stdev=91.23, samples=52 iops : min= 3, max= 27, avg=14.48, stdev= 5.70, samples=52 lat (usec) : 50=0.26%, 100=5.86%, 250=1.95%, 500=0.39%, 1000=0.13% lat (msec) : 2=0.78%, 4=5.08%, 10=11.85%, 20=10.68%, 50=37.76% lat (msec) : 100=21.48%, 250=3.65%, 500=0.13% cpu : usr=0.09%, sys=7.79%, ctx=1734, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144279: Fri Aug 21 09:17:20 2026 read: IOPS=14, BW=235KiB/s (241kB/s)(6256KiB/26590msec) clat (usec): min=37, max=189359, avg=35149.68, stdev=30735.48 lat (usec): min=37, max=189361, avg=35151.25, stdev=30735.56 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 60], 10.00th=[ 73], 20.00th=[ 123], | 30.00th=[ 19530], 40.00th=[ 26346], 50.00th=[ 33817], 60.00th=[ 39060], | 70.00th=[ 45876], 80.00th=[ 54264], 90.00th=[ 71828], 95.00th=[ 89654], | 99.00th=[160433], 99.50th=[181404], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 95, max= 446, per=27.40%, avg=242.47, stdev=77.19, samples=51 iops : min= 5, max= 27, avg=14.39, stdev= 4.85, samples=51 write: IOPS=14, BW=227KiB/s (232kB/s)(6032KiB/26590msec); 0 zone resets clat (usec): min=1684, max=261354, avg=33511.28, stdev=35016.75 lat (usec): min=1686, max=261356, avg=33521.32, stdev=35012.37 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2474], 10.00th=[ 3621], 20.00th=[ 6194], | 30.00th=[ 9634], 40.00th=[ 13042], 50.00th=[ 22938], 60.00th=[ 32113], | 70.00th=[ 44303], 80.00th=[ 58983], 90.00th=[ 76022], 95.00th=[ 90702], | 99.00th=[162530], 99.50th=[246416], 99.90th=[261096], 99.95th=[261096], | 99.99th=[261096] bw ( KiB/s): min= 61, max= 444, per=24.20%, avg=225.58, stdev=89.18, samples=52 iops : min= 3, max= 27, avg=13.33, stdev= 5.68, samples=52 lat (usec) : 50=1.82%, 100=7.03%, 250=2.34%, 500=0.65%, 750=0.13% lat (msec) : 2=2.08%, 4=4.69%, 10=10.29%, 20=9.90%, 50=35.81% lat (msec) : 100=22.01%, 250=3.12%, 500=0.13% cpu : usr=0.08%, sys=7.42%, ctx=1601, 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=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=144280: Fri Aug 21 09:17:20 2026 read: IOPS=13, BW=223KiB/s (228kB/s)(6032KiB/27038msec) clat (usec): min=40, max=139820, avg=34529.01, stdev=27838.14 lat (usec): min=40, max=139820, avg=34530.35, stdev=27838.09 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 64], 10.00th=[ 71], 20.00th=[ 116], | 30.00th=[ 20841], 40.00th=[ 27132], 50.00th=[ 32900], 60.00th=[ 38536], | 70.00th=[ 46924], 80.00th=[ 54789], 90.00th=[ 69731], 95.00th=[ 83362], | 99.00th=[122160], 99.50th=[129500], 99.90th=[139461], 99.95th=[139461], | 99.99th=[139461] bw ( KiB/s): min= 31, max= 382, per=25.42%, avg=225.00, stdev=78.70, samples=52 iops : min= 1, max= 23, avg=13.29, stdev= 4.95, samples=52 write: IOPS=14, BW=231KiB/s (237kB/s)(6256KiB/27038msec); 0 zone resets clat (usec): min=1509, max=286791, avg=35375.85, stdev=40827.98 lat (usec): min=1510, max=286794, avg=35381.47, stdev=40833.61 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 2704], 10.00th=[ 3752], 20.00th=[ 5669], | 30.00th=[ 8848], 40.00th=[ 14222], 50.00th=[ 22676], 60.00th=[ 32375], | 70.00th=[ 43779], 80.00th=[ 58459], 90.00th=[ 77071], 95.00th=[106431], | 99.00th=[227541], 99.50th=[283116], 99.90th=[287310], 99.95th=[287310], | 99.99th=[287310] bw ( KiB/s): min= 63, max= 415, per=24.70%, avg=230.23, stdev=97.45, samples=53 iops : min= 3, max= 25, avg=13.62, stdev= 6.14, samples=53 lat (usec) : 50=0.52%, 100=8.20%, 250=1.95%, 500=0.26%, 750=0.39% lat (msec) : 2=1.82%, 4=4.17%, 10=11.98%, 20=9.11%, 50=35.55% lat (msec) : 100=21.35%, 250=4.43%, 500=0.26% cpu : usr=0.08%, sys=7.82%, ctx=1593, majf=0, minf=18 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=886KiB/s (907kB/s), 215KiB/s-235KiB/s (220kB/s-241kB/s), io=23.4MiB (24.5MB), run=25609-27038msec WRITE: bw=932KiB/s (954kB/s), 227KiB/s-249KiB/s (232kB/s-255kB/s), io=24.6MiB (25.8MB), run=25609-27038msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144273: Fri Aug 21 09:17:58 2026 read: IOPS=5, BW=91.9KiB/s (94.1kB/s)(5920KiB/64399msec) clat (msec): min=6, max=222, avg=36.28, stdev=32.86 lat (msec): min=6, max=222, avg=36.28, stdev=32.86 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 36], 80.00th=[ 44], 90.00th=[ 66], 95.00th=[ 109], | 99.00th=[ 176], 99.50th=[ 197], 99.90th=[ 224], 99.95th=[ 224], | 99.99th=[ 224] bw ( KiB/s): min= 31, max= 317, per=25.96%, avg=95.26, stdev=59.17, samples=121 iops : min= 1, max= 19, avg= 5.19, stdev= 3.76, samples=121 write: IOPS=6, BW=98.9KiB/s (101kB/s)(6368KiB/64399msec); 0 zone resets clat (msec): min=42, max=359, avg=127.73, stdev=53.28 lat (msec): min=42, max=359, avg=127.73, stdev=53.28 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 67], 10.00th=[ 73], 20.00th=[ 84], | 30.00th=[ 95], 40.00th=[ 105], 50.00th=[ 115], 60.00th=[ 130], | 70.00th=[ 144], 80.00th=[ 167], 90.00th=[ 205], 95.00th=[ 232], | 99.00th=[ 309], 99.50th=[ 355], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 29, max= 192, per=25.61%, avg=98.86, stdev=40.19, samples=126 iops : min= 1, max= 12, avg= 5.42, stdev= 2.56, samples=126 lat (msec) : 10=1.30%, 20=14.45%, 50=24.48%, 100=23.70%, 250=34.51% lat (msec) : 500=1.56% cpu : usr=0.05%, sys=1.69%, ctx=1331, 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=144274: Fri Aug 21 09:17:58 2026 read: IOPS=5, BW=88.1KiB/s (90.2kB/s)(5744KiB/65192msec) clat (msec): min=8, max=236, avg=37.27, stdev=36.85 lat (msec): min=8, max=236, avg=37.28, stdev=36.85 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 21], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 50], 90.00th=[ 81], 95.00th=[ 117], | 99.00th=[ 205], 99.50th=[ 230], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 28, max= 380, per=27.39%, avg=100.50, stdev=66.20, samples=113 iops : min= 1, max= 23, avg= 5.53, stdev= 4.22, samples=113 write: IOPS=6, BW=100KiB/s (103kB/s)(6544KiB/65192msec); 0 zone resets clat (msec): min=39, max=397, avg=126.37, stdev=55.62 lat (msec): min=39, max=397, avg=126.38, stdev=55.62 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 60], 10.00th=[ 69], 20.00th=[ 81], | 30.00th=[ 94], 40.00th=[ 105], 50.00th=[ 116], 60.00th=[ 128], | 70.00th=[ 142], 80.00th=[ 163], 90.00th=[ 205], 95.00th=[ 239], | 99.00th=[ 305], 99.50th=[ 317], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 31, max= 256, per=26.24%, avg=101.30, stdev=43.60, samples=127 iops : min= 1, max= 16, avg= 5.58, stdev= 2.80, samples=127 lat (msec) : 10=1.56%, 20=16.54%, 50=20.70%, 100=23.57%, 250=35.68% lat (msec) : 500=1.95% cpu : usr=0.04%, sys=1.71%, ctx=1377, 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=144275: Fri Aug 21 09:17:58 2026 read: IOPS=6, BW=97.9KiB/s (100kB/s)(6256KiB/63915msec) clat (msec): min=8, max=276, avg=37.91, stdev=38.38 lat (msec): min=8, max=276, avg=37.91, stdev=38.38 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 47], 90.00th=[ 75], 95.00th=[ 101], | 99.00th=[ 239], 99.50th=[ 251], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 288, per=28.07%, avg=103.03, stdev=68.12, samples=120 iops : min= 1, max= 18, avg= 5.68, stdev= 4.30, samples=120 write: IOPS=5, BW=94.4KiB/s (96.6kB/s)(6032KiB/63915msec); 0 zone resets clat (msec): min=41, max=315, avg=129.88, stdev=49.55 lat (msec): min=41, max=315, avg=129.89, stdev=49.56 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 72], 10.00th=[ 81], 20.00th=[ 90], | 30.00th=[ 99], 40.00th=[ 109], 50.00th=[ 117], 60.00th=[ 130], | 70.00th=[ 146], 80.00th=[ 165], 90.00th=[ 192], 95.00th=[ 234], | 99.00th=[ 300], 99.50th=[ 309], 99.90th=[ 317], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 30, max= 191, per=24.62%, avg=95.02, stdev=36.79, samples=124 iops : min= 1, max= 11, avg= 5.17, stdev= 2.35, samples=124 lat (msec) : 10=0.78%, 20=16.67%, 50=23.96%, 100=22.92%, 250=33.85% lat (msec) : 500=1.82% cpu : usr=0.04%, sys=1.67%, ctx=1347, 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=144276: Fri Aug 21 09:17:58 2026 read: IOPS=5, BW=93.7KiB/s (95.9kB/s)(6032KiB/64405msec) clat (msec): min=7, max=273, avg=34.50, stdev=32.75 lat (msec): min=7, max=273, avg=34.50, stdev=32.75 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 16], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 47], 90.00th=[ 73], 95.00th=[ 100], | 99.00th=[ 171], 99.50th=[ 243], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 31, max= 288, per=27.77%, avg=101.92, stdev=67.79, samples=115 iops : min= 1, max= 18, avg= 5.63, stdev= 4.26, samples=115 write: IOPS=6, BW=97.1KiB/s (99.5kB/s)(6256KiB/64405msec); 0 zone resets clat (msec): min=42, max=390, avg=131.32, stdev=59.69 lat (msec): min=42, max=390, avg=131.33, stdev=59.69 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 85], | 30.00th=[ 93], 40.00th=[ 106], 50.00th=[ 118], 60.00th=[ 130], | 70.00th=[ 146], 80.00th=[ 171], 90.00th=[ 213], 95.00th=[ 255], | 99.00th=[ 342], 99.50th=[ 368], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 30, max= 190, per=25.41%, avg=98.09, stdev=39.26, samples=125 iops : min= 1, max= 11, avg= 5.37, stdev= 2.51, samples=125 lat (msec) : 10=0.91%, 20=17.97%, 50=22.79%, 100=23.70%, 250=31.64% lat (msec) : 500=2.99% cpu : usr=0.04%, sys=1.72%, ctx=1361, 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=367KiB/s (376kB/s), 88.1KiB/s-97.9KiB/s (90.2kB/s-100kB/s), io=23.4MiB (24.5MB), run=63915-65192msec WRITE: bw=387KiB/s (396kB/s), 94.4KiB/s-100KiB/s (96.6kB/s-103kB/s), io=24.6MiB (25.8MB), run=63915-65192msec 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=144296: Fri Aug 21 09:18:12 2026 read: IOPS=2, BW=2261KiB/s (2315kB/s)(7168KiB/3170msec) clat (usec): min=642, max=462519, avg=146928.35, stdev=185329.44 lat (usec): min=643, max=462520, avg=146929.79, stdev=185329.64 clat percentiles (usec): | 1.00th=[ 644], 5.00th=[ 644], 10.00th=[ 644], 20.00th=[ 1713], | 30.00th=[ 1713], 40.00th=[ 1713], 50.00th=[ 34341], 60.00th=[225444], | 70.00th=[225444], 80.00th=[304088], 90.00th=[463471], 95.00th=[463471], | 99.00th=[463471], 99.50th=[463471], 99.90th=[463471], 99.95th=[463471], | 99.99th=[463471] bw ( KiB/s): min= 2007, max= 6023, per=100.00%, avg=3979.33, stdev=2008.95, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 write: IOPS=1, BW=1615KiB/s (1654kB/s)(5120KiB/3170msec); 0 zone resets clat (msec): min=169, max=627, avg=335.55, stdev=189.39 lat (msec): min=169, max=627, avg=335.64, stdev=189.40 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 169], | 30.00th=[ 224], 40.00th=[ 224], 50.00th=[ 234], 60.00th=[ 234], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 4015, max= 4015, per=75.19%, avg=4015.00, stdev= 0.00, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 lat (usec) : 750=8.33% lat (msec) : 2=16.67%, 50=8.33%, 250=33.33%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=17.23%, ctx=323, 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=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=144298: Fri Aug 21 09:18:12 2026 read: IOPS=0, BW=438KiB/s (449kB/s)(2048KiB/4674msec) clat (msec): min=189, max=327, avg=258.53, stdev=96.95 lat (msec): min=189, max=327, avg=258.53, stdev=96.95 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 190], 60.00th=[ 326], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 326], 95.00th=[ 326], | 99.00th=[ 326], 99.50th=[ 326], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 1954, max= 1996, per=51.78%, avg=1975.00, stdev=29.70, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2191KiB/s (2243kB/s)(10.0MiB/4674msec); 0 zone resets clat (msec): min=81, max=634, avg=379.40, stdev=147.37 lat (msec): min=81, max=634, avg=379.49, stdev=147.37 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 264], | 30.00th=[ 296], 40.00th=[ 334], 50.00th=[ 418], 60.00th=[ 426], | 70.00th=[ 430], 80.00th=[ 439], 90.00th=[ 472], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1954, max= 4063, per=43.06%, avg=2299.57, stdev=778.09, samples=7 iops : min= 1, max= 3, avg= 1.29, stdev= 0.76, samples=7 lat (msec) : 100=8.33%, 250=8.33%, 500=75.00%, 750=8.33% cpu : usr=0.02%, sys=16.56%, ctx=211, 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=144299: Fri Aug 21 09:18:12 2026 read: IOPS=2, BW=2266KiB/s (2321kB/s)(6144KiB/2711msec) clat (usec): min=590, max=332933, avg=190129.86, stdev=134854.03 lat (usec): min=591, max=332934, avg=190131.23, stdev=134854.26 clat percentiles (usec): | 1.00th=[ 594], 5.00th=[ 594], 10.00th=[ 594], 20.00th=[ 69731], | 30.00th=[ 69731], 40.00th=[200279], 50.00th=[200279], 60.00th=[204473], | 70.00th=[329253], 80.00th=[329253], 90.00th=[333448], 95.00th=[333448], | 99.00th=[333448], 99.50th=[333448], 99.90th=[333448], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 2007, max= 4015, per=86.79%, avg=3310.00, stdev=1129.70, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=2, BW=2266KiB/s (2321kB/s)(6144KiB/2711msec); 0 zone resets clat (msec): min=155, max=549, avg=254.22, stdev=147.20 lat (msec): min=155, max=549, avg=254.30, stdev=147.20 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 197], 50.00th=[ 197], 60.00th=[ 224], | 70.00th=[ 228], 80.00th=[ 228], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 2007, max= 4770, per=54.96%, avg=2934.67, stdev=1589.48, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=58.33%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=22.03%, ctx=166, 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=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=144300: Fri Aug 21 09:18:12 2026 read: IOPS=0, BW=954KiB/s (977kB/s)(5120KiB/5369msec) clat (usec): min=905, max=343302, avg=187191.62, stdev=133983.21 lat (usec): min=907, max=343303, avg=187193.18, stdev=133983.32 clat percentiles (usec): | 1.00th=[ 906], 5.00th=[ 906], 10.00th=[ 906], 20.00th=[ 906], | 30.00th=[139461], 40.00th=[139461], 50.00th=[166724], 60.00th=[166724], | 70.00th=[287310], 80.00th=[287310], 90.00th=[341836], 95.00th=[341836], | 99.00th=[341836], 99.50th=[341836], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 4023, max= 4087, per=100.00%, avg=4055.00, stdev=45.25, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1335KiB/s (1367kB/s)(7168KiB/5369msec); 0 zone resets clat (msec): min=159, max=971, avg=595.23, stdev=317.77 lat (msec): min=159, max=971, avg=595.32, stdev=317.77 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 380], | 30.00th=[ 409], 40.00th=[ 409], 50.00th=[ 481], 60.00th=[ 810], | 70.00th=[ 810], 80.00th=[ 961], 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= 1996, max= 2039, per=37.74%, avg=2015.17, stdev=16.35, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (usec) : 1000=8.33% lat (msec) : 250=25.00%, 500=41.67%, 1000=25.00% cpu : usr=0.06%, sys=12.02%, ctx=180, 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=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=3814KiB/s (3906kB/s), 438KiB/s-2266KiB/s (449kB/s-2321kB/s), io=20.0MiB (20.0MB), run=2711-5369msec WRITE: bw=5340KiB/s (5468kB/s), 1335KiB/s-2266KiB/s (1367kB/s-2321kB/s), io=28.0MiB (29.4MB), run=2711-5369msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144301: Fri Aug 21 09:18:12 2026 read: IOPS=1, BW=1675KiB/s (1715kB/s)(7168KiB/4280msec) clat (msec): min=60, max=682, avg=329.90, stdev=242.90 lat (msec): min=60, max=682, avg=329.91, stdev=242.90 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 130], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 268], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 542], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 2003, max= 3900, per=65.75%, avg=2493.25, stdev=937.96, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1196KiB/s (1225kB/s)(5120KiB/4280msec); 0 zone resets clat (msec): min=156, max=471, avg=327.73, stdev=118.58 lat (msec): min=156, max=471, avg=327.88, stdev=118.58 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 296], 40.00th=[ 296], 50.00th=[ 317], 60.00th=[ 317], | 70.00th=[ 401], 80.00th=[ 401], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 1851, max= 4087, per=55.92%, avg=2969.00, stdev=1581.09, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 750=16.67% cpu : usr=0.00%, sys=6.01%, ctx=101, 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=144302: Fri Aug 21 09:18:12 2026 read: IOPS=0, BW=379KiB/s (388kB/s)(2048KiB/5400msec) clat (msec): min=310, max=630, avg=470.45, stdev=225.77 lat (msec): min=310, max=630, avg=470.46, stdev=225.77 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 313], 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= 2031, max= 2035, per=53.61%, avg=2033.00, stdev= 2.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1896KiB/s (1942kB/s)(10.0MiB/5400msec); 0 zone resets clat (msec): min=188, max=835, avg=433.50, stdev=217.97 lat (msec): min=188, max=835, avg=433.61, stdev=217.96 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 253], | 30.00th=[ 292], 40.00th=[ 313], 50.00th=[ 321], 60.00th=[ 368], | 70.00th=[ 422], 80.00th=[ 609], 90.00th=[ 735], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 1851, max= 4087, per=48.60%, avg=2580.14, stdev=1031.46, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.95, samples=7 lat (msec) : 250=8.33%, 500=58.33%, 750=25.00%, 1000=8.33% cpu : usr=0.02%, sys=6.22%, ctx=128, 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=144303: Fri Aug 21 09:18:12 2026 read: IOPS=1, BW=1363KiB/s (1396kB/s)(6144KiB/4508msec) clat (msec): min=108, max=280, avg=151.24, stdev=66.03 lat (msec): min=108, max=280, avg=151.24, stdev=66.03 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 111], | 30.00th=[ 111], 40.00th=[ 122], 50.00th=[ 122], 60.00th=[ 126], | 70.00th=[ 161], 80.00th=[ 161], 90.00th=[ 279], 95.00th=[ 279], | 99.00th=[ 279], 99.50th=[ 279], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 2035, max= 4087, per=89.67%, avg=3400.33, stdev=1182.42, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1363KiB/s (1396kB/s)(6144KiB/4508msec); 0 zone resets clat (msec): min=193, max=1192, avg=582.83, stdev=375.50 lat (msec): min=193, max=1192, avg=582.94, stdev=375.49 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 584], | 70.00th=[ 844], 80.00th=[ 844], 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= 1950, max= 2043, per=37.91%, avg=2012.40, stdev=38.00, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=6.15%, ctx=88, 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=144304: Fri Aug 21 09:18:12 2026 read: IOPS=1, BW=1082KiB/s (1108kB/s)(5120KiB/4731msec) clat (msec): min=85, max=277, avg=142.94, stdev=78.76 lat (msec): min=85, max=277, avg=142.94, stdev=78.76 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 86], | 30.00th=[ 87], 40.00th=[ 87], 50.00th=[ 131], 60.00th=[ 131], | 70.00th=[ 136], 80.00th=[ 136], 90.00th=[ 279], 95.00th=[ 279], | 99.00th=[ 279], 99.50th=[ 279], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 2035, max= 6131, per=100.00%, avg=4083.00, stdev=2896.31, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1515KiB/s (1551kB/s)(7168KiB/4731msec); 0 zone resets clat (msec): min=217, max=915, avg=552.28, stdev=289.24 lat (msec): min=218, max=915, avg=552.74, stdev=288.79 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 232], | 30.00th=[ 401], 40.00th=[ 401], 50.00th=[ 514], 60.00th=[ 709], | 70.00th=[ 709], 80.00th=[ 877], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 1851, max= 2039, per=37.52%, avg=1991.80, stdev=79.97, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=16.67%, 750=16.67%, 1000=16.67% cpu : usr=0.11%, sys=4.67%, ctx=65, 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=3793KiB/s (3884kB/s), 379KiB/s-1675KiB/s (388kB/s-1715kB/s), io=20.0MiB (20.0MB), run=4280-5400msec WRITE: bw=5310KiB/s (5437kB/s), 1196KiB/s-1896KiB/s (1225kB/s-1942kB/s), io=28.0MiB (29.4MB), run=4280-5400msec 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=144311: Fri Aug 21 09:18:27 2026 read: IOPS=0, BW=3972KiB/s (4067kB/s)(12.0MiB/3094msec) clat (msec): min=798, max=1094, avg=975.68, stdev=156.21 lat (msec): min=798, max=1094, avg=975.69, stdev=156.21 clat percentiles (msec): | 1.00th=[ 802], 5.00th=[ 802], 10.00th=[ 802], 20.00th=[ 802], | 30.00th=[ 802], 40.00th=[ 1036], 50.00th=[ 1036], 60.00th=[ 1036], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8094, max= 8159, per=100.00%, avg=8126.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=3.62%, ctx=61, 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=144312: Fri Aug 21 09:18:27 2026 read: IOPS=0, BW=1147KiB/s (1175kB/s)(4096KiB/3571msec) clat (nsec): min=1323.0M, max=1323.0M, avg=1323990553.00, stdev= 0.00 lat (nsec): min=1323.0M, max=1323.0M, avg=1323992716.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1318], 5.00th=[ 1318], 10.00th=[ 1318], 20.00th=[ 1318], | 30.00th=[ 1318], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 1318], | 70.00th=[ 1318], 80.00th=[ 1318], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2294KiB/s (2349kB/s)(8192KiB/3571msec); 0 zone resets clat (msec): min=600, max=1549, avg=1074.90, stdev=671.59 lat (msec): min=600, max=1550, avg=1075.44, stdev=671.59 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 1552], | 70.00th=[ 1552], 80.00th=[ 1552], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8078, max= 8078, per=88.03%, avg=8078.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.09%, ctx=65, 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=144314: Fri Aug 21 09:18:27 2026 write: IOPS=1, BW=4977KiB/s (5096kB/s)(12.0MiB/2469msec); 0 zone resets clat (msec): min=401, max=1001, avg=787.23, stdev=335.03 lat (msec): min=401, max=1001, avg=787.64, stdev=334.92 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 1003], 80.00th=[ 1003], 90.00th=[ 1003], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 6671, max= 8094, per=80.45%, avg=7382.50, stdev=1006.21, 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=0.00%, sys=4.86%, ctx=58, 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=144315: Fri Aug 21 09:18:27 2026 write: IOPS=1, BW=4757KiB/s (4871kB/s)(12.0MiB/2583msec); 0 zone resets clat (msec): min=332, max=1413, avg=799.76, stdev=555.35 lat (msec): min=333, max=1414, avg=800.12, stdev=555.35 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 5919, max= 7907, per=75.34%, avg=6913.00, stdev=1405.73, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.58%, ctx=72, 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=4588KiB/s (4698kB/s), 1147KiB/s-3972KiB/s (1175kB/s-4067kB/s), io=16.0MiB (16.8MB), run=3094-3571msec WRITE: bw=9176KiB/s (9396kB/s), 2294KiB/s-4977KiB/s (2349kB/s-5096kB/s), io=32.0MiB (33.6MB), run=2469-3571msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144316: Fri Aug 21 09:18:28 2026 read: IOPS=1, BW=4665KiB/s (4777kB/s)(12.0MiB/2634msec) clat (msec): min=739, max=1009, avg=858.87, stdev=137.84 lat (msec): min=739, max=1009, avg=858.87, stdev=137.84 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 1011], 80.00th=[ 1011], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 8000, max= 8192, per=100.00%, avg=8096.00, stdev=135.76, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=11.81%, ctx=326, 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=144317: Fri Aug 21 09:18:28 2026 read: IOPS=0, BW=1690KiB/s (1731kB/s)(4096KiB/2423msec) clat (nsec): min=714136k, max=714136k, avg=714135605.00, stdev= 0.00 lat (nsec): min=714138k, max=714138k, avg=714138190.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 718], 5.00th=[ 718], 10.00th=[ 718], 20.00th=[ 718], | 30.00th=[ 718], 40.00th=[ 718], 50.00th=[ 718], 60.00th=[ 718], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] 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=3381KiB/s (3462kB/s)(8192KiB/2423msec); 0 zone resets clat (msec): min=329, max=1241, avg=785.52, stdev=645.37 lat (msec): min=329, max=1242, avg=786.02, stdev=645.66 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=[ 1250], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 8192, max= 8192, per=98.96%, 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%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=8.09%, ctx=113, 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=144318: Fri Aug 21 09:18:28 2026 write: IOPS=0, BW=3105KiB/s (3179kB/s)(12.0MiB/3958msec); 0 zone resets clat (msec): min=365, max=1830, avg=1304.33, stdev=815.28 lat (msec): min=365, max=1831, avg=1304.62, stdev=815.37 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 1720], 50.00th=[ 1720], 60.00th=[ 1720], | 70.00th=[ 1838], 80.00th=[ 1838], 90.00th=[ 1838], 95.00th=[ 1838], | 99.00th=[ 1838], 99.50th=[ 1838], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 8000, max= 8159, per=97.60%, avg=8079.50, stdev=112.43, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.40%, ctx=49, 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=144319: Fri Aug 21 09:18:28 2026 write: IOPS=0, BW=3701KiB/s (3790kB/s)(12.0MiB/3320msec); 0 zone resets clat (msec): min=344, max=2135, avg=1093.42, stdev=930.92 lat (msec): min=344, max=2136, avg=1093.88, stdev=931.06 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 802], 50.00th=[ 802], 60.00th=[ 802], | 70.00th=[ 2140], 80.00th=[ 2140], 90.00th=[ 2140], 95.00th=[ 2140], | 99.00th=[ 2140], 99.50th=[ 2140], 99.90th=[ 2140], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 8159, max= 8175, per=98.66%, avg=8167.00, stdev=11.31, 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=0.00%, sys=4.43%, ctx=74, 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=6220KiB/s (6369kB/s), 1690KiB/s-4665KiB/s (1731kB/s-4777kB/s), io=16.0MiB (16.8MB), run=2423-2634msec WRITE: bw=8279KiB/s (8478kB/s), 3105KiB/s-3701KiB/s (3179kB/s-3790kB/s), io=32.0MiB (33.6MB), run=2423-3958msec