== sanity test 398b: DIO and buffer IO race ============== 05:54:19 (1786355659) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.91076 s, 17.3 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=181510: Mon Aug 10 05:55:46 2026 read: IOPS=19, BW=78.3KiB/s (80.2kB/s)(5992KiB/76492msec) clat (usec): min=94, max=1304.1k, avg=27766.80, stdev=35676.46 lat (usec): min=95, max=1304.1k, avg=27767.56, stdev=35676.49 clat percentiles (usec): | 1.00th=[ 180], 5.00th=[ 9765], 10.00th=[ 12649], | 20.00th=[ 16057], 30.00th=[ 19006], 40.00th=[ 21627], | 50.00th=[ 24511], 60.00th=[ 27657], 70.00th=[ 32113], | 80.00th=[ 36963], 90.00th=[ 44827], 95.00th=[ 51119], | 99.00th=[ 69731], 99.50th=[ 76022], 99.90th=[ 100140], | 99.95th=[1300235], 99.99th=[1300235] bw ( KiB/s): min= 13, max= 152, per=25.15%, avg=78.46, stdev=23.26, samples=151 iops : min= 3, max= 38, avg=19.13, stdev= 5.87, samples=151 write: IOPS=20, BW=82.3KiB/s (84.3kB/s)(6296KiB/76492msec); 0 zone resets clat (usec): min=863, max=102832, avg=22006.79, stdev=15113.05 lat (usec): min=864, max=102832, avg=22007.70, stdev=15113.10 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 34], 90.00th=[ 43], 95.00th=[ 52], | 99.00th=[ 71], 99.50th=[ 79], 99.90th=[ 89], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 23, max= 160, per=25.38%, avg=82.99, stdev=28.81, samples=150 iops : min= 5, max= 40, avg=20.27, stdev= 7.29, samples=150 lat (usec) : 100=0.07%, 250=0.75%, 500=0.16%, 750=0.03%, 1000=0.23% lat (msec) : 2=0.23%, 4=1.82%, 10=12.04%, 20=28.35%, 50=50.91% lat (msec) : 100=5.31%, 250=0.07%, 2000=0.03% cpu : usr=0.08%, sys=26.42%, ctx=11229, 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=181511: Mon Aug 10 05:55:46 2026 read: IOPS=19, BW=78.3KiB/s (80.1kB/s)(5940KiB/75892msec) clat (usec): min=36, max=89149, avg=26924.52, stdev=12740.01 lat (usec): min=36, max=89149, avg=26925.29, stdev=12740.02 clat percentiles (usec): | 1.00th=[ 6521], 5.00th=[11600], 10.00th=[13435], 20.00th=[16581], | 30.00th=[19268], 40.00th=[21365], 50.00th=[24511], 60.00th=[27919], | 70.00th=[31327], 80.00th=[35914], 90.00th=[43779], 95.00th=[50594], | 99.00th=[68682], 99.50th=[79168], 99.90th=[87557], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 6, max= 144, per=25.15%, avg=78.45, stdev=26.16, samples=150 iops : min= 1, max= 36, avg=19.13, stdev= 6.57, samples=150 write: IOPS=20, BW=83.6KiB/s (85.7kB/s)(6348KiB/75892msec); 0 zone resets clat (usec): min=805, max=1297.1k, avg=22456.64, stdev=35462.18 lat (usec): min=805, max=1297.1k, avg=22457.59, stdev=35462.20 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 3982], 10.00th=[ 5276], | 20.00th=[ 7767], 30.00th=[ 11338], 40.00th=[ 15008], | 50.00th=[ 18220], 60.00th=[ 22938], 70.00th=[ 27395], | 80.00th=[ 34341], 90.00th=[ 42206], 95.00th=[ 49546], | 99.00th=[ 68682], 99.50th=[ 76022], 99.90th=[ 115868], | 99.95th=[1300235], 99.99th=[1300235] bw ( KiB/s): min= 6, max= 204, per=25.65%, avg=83.88, stdev=31.21, samples=150 iops : min= 1, max= 51, avg=20.49, stdev= 7.90, samples=150 lat (usec) : 50=0.03%, 100=0.03%, 250=0.16%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=0.49%, 4=2.05%, 10=11.95%, 20=29.62%, 50=50.36% lat (msec) : 100=4.88%, 250=0.10%, 2000=0.03% cpu : usr=0.09%, sys=26.56%, ctx=11107, 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=181512: Mon Aug 10 05:55:46 2026 read: IOPS=20, BW=80.2KiB/s (82.1kB/s)(6028KiB/75186msec) clat (usec): min=41, max=119378, avg=26396.68, stdev=13217.77 lat (usec): min=41, max=119379, avg=26397.58, stdev=13217.76 clat percentiles (usec): | 1.00th=[ 192], 5.00th=[ 9503], 10.00th=[ 12518], 20.00th=[ 16450], | 30.00th=[ 19006], 40.00th=[ 21365], 50.00th=[ 24249], 60.00th=[ 27132], | 70.00th=[ 31327], 80.00th=[ 35390], 90.00th=[ 42730], 95.00th=[ 49021], | 99.00th=[ 68682], 99.50th=[ 77071], 99.90th=[100140], 99.95th=[119014], | 99.99th=[119014] bw ( KiB/s): min= 39, max= 152, per=26.11%, avg=81.47, stdev=23.69, samples=146 iops : min= 9, max= 38, avg=19.88, stdev= 6.00, samples=146 write: IOPS=20, BW=83.3KiB/s (85.3kB/s)(6260KiB/75186msec); 0 zone resets clat (usec): min=840, max=1324.2k, avg=22462.09, stdev=35976.41 lat (usec): min=841, max=1324.2k, avg=22463.18, stdev=35976.42 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 12], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 33], 90.00th=[ 42], 95.00th=[ 50], | 99.00th=[ 66], 99.50th=[ 74], 99.90th=[ 89], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 15, max= 160, per=25.62%, avg=83.79, stdev=25.08, samples=147 iops : min= 3, max= 40, avg=20.46, stdev= 6.33, samples=147 lat (usec) : 50=0.03%, 100=0.07%, 250=0.68%, 500=0.26%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=0.46%, 4=1.99%, 10=12.63%, 20=27.21%, 50=52.12% lat (msec) : 100=4.33%, 250=0.10%, 2000=0.03% cpu : usr=0.09%, sys=26.52%, ctx=11196, 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=181513: Mon Aug 10 05:55:46 2026 read: IOPS=19, BW=78.9KiB/s (80.7kB/s)(6052KiB/76747msec) clat (usec): min=103, max=104103, avg=26845.45, stdev=13194.84 lat (usec): min=103, max=104103, avg=26846.21, stdev=13194.94 clat percentiles (usec): | 1.00th=[ 202], 5.00th=[ 10552], 10.00th=[ 13042], 20.00th=[ 16319], | 30.00th=[ 19006], 40.00th=[ 21365], 50.00th=[ 24249], 60.00th=[ 27919], | 70.00th=[ 31851], 80.00th=[ 36963], 90.00th=[ 43779], 95.00th=[ 50070], | 99.00th=[ 66847], 99.50th=[ 80217], 99.90th=[100140], 99.95th=[104334], | 99.99th=[104334] bw ( KiB/s): min= 31, max= 136, per=25.55%, avg=79.70, stdev=22.96, samples=149 iops : min= 7, max= 34, avg=19.44, stdev= 5.84, samples=149 write: IOPS=20, BW=81.3KiB/s (83.2kB/s)(6236KiB/76747msec); 0 zone resets clat (usec): min=937, max=1332.1k, avg=23015.72, stdev=36227.20 lat (usec): min=937, max=1332.1k, avg=23019.94, stdev=36226.25 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 9], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 34], 90.00th=[ 44], 95.00th=[ 51], | 99.00th=[ 65], 99.50th=[ 73], 99.90th=[ 85], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 15, max= 151, per=25.01%, avg=81.77, stdev=25.48, samples=150 iops : min= 3, max= 37, avg=19.96, stdev= 6.42, samples=150 lat (usec) : 250=0.85%, 500=0.10%, 1000=0.03% lat (msec) : 2=0.36%, 4=1.66%, 10=11.26%, 20=28.22%, 50=52.21% lat (msec) : 100=5.24%, 250=0.03%, 2000=0.03% cpu : usr=0.07%, sys=26.39%, ctx=11343, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=313KiB/s (320kB/s), 78.3KiB/s-80.2KiB/s (80.1kB/s-82.1kB/s), io=23.4MiB (24.6MB), run=75186-76747msec WRITE: bw=328KiB/s (335kB/s), 81.3KiB/s-83.6KiB/s (83.2kB/s-85.7kB/s), io=24.6MiB (25.7MB), run=75186-76747msec fio: pid=181507, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=181505: Mon Aug 10 05:55:54 2026 read: IOPS=17, BW=70.6KiB/s (72.3kB/s)(5992KiB/84822msec) clat (msec): min=2, max=1316, avg=26.05, stdev=37.09 lat (msec): min=2, max=1316, avg=26.05, stdev=37.09 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 9], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 30], 80.00th=[ 38], 90.00th=[ 49], 95.00th=[ 59], | 99.00th=[ 78], 99.50th=[ 84], 99.90th=[ 106], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 15, max= 280, per=25.69%, avg=70.91, stdev=42.57, samples=165 iops : min= 3, max= 70, avg=17.28, stdev=10.73, samples=165 write: IOPS=18, BW=74.2KiB/s (76.0kB/s)(6296KiB/84822msec); 0 zone resets clat (msec): min=4, max=129, avg=28.87, stdev=18.67 lat (msec): min=4, max=129, avg=28.87, stdev=18.67 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 43], 90.00th=[ 54], 95.00th=[ 65], | 99.00th=[ 96], 99.50th=[ 105], 99.90th=[ 124], 99.95th=[ 130], | 99.99th=[ 130] bw ( KiB/s): min= 15, max= 240, per=25.67%, avg=74.20, stdev=43.00, samples=165 iops : min= 3, max= 60, avg=18.10, stdev=10.81, samples=165 lat (msec) : 4=0.52%, 10=12.50%, 20=30.01%, 50=46.39%, 100=10.12% lat (msec) : 250=0.42%, 2000=0.03% cpu : usr=0.08%, sys=15.69%, ctx=7867, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181506: Mon Aug 10 05:55:54 2026 read: IOPS=17, BW=70.1KiB/s (71.8kB/s)(5940KiB/84763msec) clat (msec): min=3, max=1307, avg=26.04, stdev=37.24 lat (msec): min=3, max=1307, avg=26.05, stdev=37.24 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 37], 90.00th=[ 51], 95.00th=[ 60], | 99.00th=[ 80], 99.50th=[ 88], 99.90th=[ 106], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7, max= 288, per=25.52%, avg=70.43, stdev=41.21, samples=165 iops : min= 1, max= 72, avg=17.16, stdev=10.39, samples=165 write: IOPS=18, BW=74.9KiB/s (76.7kB/s)(6348KiB/84763msec); 0 zone resets clat (msec): min=4, max=142, avg=28.81, stdev=18.22 lat (msec): min=4, max=142, avg=28.81, stdev=18.22 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 35], 80.00th=[ 42], 90.00th=[ 53], 95.00th=[ 64], | 99.00th=[ 87], 99.50th=[ 108], 99.90th=[ 134], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 23, max= 263, per=25.94%, avg=74.98, stdev=41.42, samples=165 iops : min= 5, max= 65, avg=18.30, stdev=10.43, samples=165 lat (msec) : 4=0.16%, 10=12.11%, 20=31.41%, 50=45.18%, 100=10.74% lat (msec) : 250=0.36%, 2000=0.03% cpu : usr=0.09%, sys=15.73%, ctx=7966, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=181507: Mon Aug 10 05:55:54 2026 read: IOPS=16, BW=66.5KiB/s (68.1kB/s)(5496KiB/82588msec) clat (msec): min=3, max=110, avg=26.62, stdev=17.10 lat (msec): min=3, max=110, avg=26.62, stdev=17.10 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 38], 90.00th=[ 52], 95.00th=[ 64], | 99.00th=[ 81], 99.50th=[ 97], 99.90th=[ 110], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 16, max= 256, per=24.39%, avg=67.30, stdev=36.03, samples=161 iops : min= 4, max= 64, avg=16.37, stdev= 9.08, samples=161 write: IOPS=17, BW=68.0KiB/s (70.6kB/s)(5696KiB/82588msec); 0 zone resets clat (msec): min=5, max=1320, avg=32.06, stdev=38.59 lat (msec): min=5, max=1320, avg=32.06, stdev=38.59 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 38], 80.00th=[ 45], 90.00th=[ 56], 95.00th=[ 64], | 99.00th=[ 93], 99.50th=[ 103], 99.90th=[ 133], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 23, max= 248, per=24.12%, avg=69.70, stdev=33.06, samples=161 iops : min= 5, max= 62, avg=16.97, stdev= 8.35, samples=161 lat (msec) : 4=0.04%, 10=8.32%, 20=29.33%, 50=49.62%, 100=12.11% lat (msec) : 250=0.50%, 2000=0.04% cpu : usr=0.08%, sys=15.39%, ctx=7318, majf=0, minf=20 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=1375,1424,0,0 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=181508: Mon Aug 10 05:55:54 2026 read: IOPS=17, BW=71.4KiB/s (73.1kB/s)(6052KiB/84784msec) clat (msec): min=3, max=122, avg=25.38, stdev=17.47 lat (msec): min=3, max=122, avg=25.38, stdev=17.47 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 37], 90.00th=[ 51], 95.00th=[ 62], | 99.00th=[ 84], 99.50th=[ 94], 99.90th=[ 115], 99.95th=[ 123], | 99.99th=[ 123] bw ( KiB/s): min= 15, max= 224, per=25.87%, avg=71.39, stdev=39.83, samples=165 iops : min= 3, max= 56, avg=17.40, stdev=10.00, samples=165 write: IOPS=18, BW=73.6KiB/s (75.3kB/s)(6236KiB/84784msec); 0 zone resets clat (msec): min=4, max=1323, avg=29.53, stdev=37.77 lat (msec): min=4, max=1323, avg=29.53, stdev=37.77 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 13], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 43], 90.00th=[ 54], 95.00th=[ 65], | 99.00th=[ 95], 99.50th=[ 104], 99.90th=[ 136], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 23, max= 264, per=25.54%, avg=73.82, stdev=44.75, samples=165 iops : min= 5, max= 66, avg=18.01, stdev=11.28, samples=165 lat (msec) : 4=0.26%, 10=13.38%, 20=31.32%, 50=43.36%, 100=11.13% lat (msec) : 250=0.52%, 2000=0.03% cpu : usr=0.08%, sys=15.62%, ctx=8119, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=277KiB/s (283kB/s), 66.5KiB/s-71.4KiB/s (68.1kB/s-73.1kB/s), io=22.9MiB (24.0MB), run=82588-84822msec WRITE: bw=290KiB/s (297kB/s), 68.0KiB/s-74.9KiB/s (70.6kB/s-76.7kB/s), io=24.0MiB (25.2MB), run=82588-84822msec 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=181541: Mon Aug 10 05:56:23 2026 read: IOPS=16, BW=263KiB/s (270kB/s)(5920KiB/22476msec) clat (usec): min=57, max=81427, avg=30045.68, stdev=14553.17 lat (usec): min=58, max=81428, avg=30046.29, stdev=14553.21 clat percentiles (usec): | 1.00th=[ 174], 5.00th=[10683], 10.00th=[14353], 20.00th=[19530], | 30.00th=[22152], 40.00th=[24773], 50.00th=[28181], 60.00th=[31065], | 70.00th=[34341], 80.00th=[39584], 90.00th=[49546], 95.00th=[58459], | 99.00th=[78119], 99.50th=[81265], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 95, max= 512, per=25.20%, avg=259.55, stdev=90.10, samples=44 iops : min= 5, max= 32, avg=15.55, stdev= 5.72, samples=44 write: IOPS=17, BW=283KiB/s (290kB/s)(6368KiB/22476msec); 0 zone resets clat (usec): min=1768, max=107972, avg=28268.59, stdev=18180.22 lat (usec): min=1769, max=107974, avg=28270.08, stdev=18180.11 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 13], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 43], 90.00th=[ 54], 95.00th=[ 65], | 99.00th=[ 91], 99.50th=[ 93], 99.90th=[ 108], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 127, max= 510, per=26.03%, avg=281.86, stdev=88.43, samples=44 iops : min= 7, max= 31, avg=16.95, stdev= 5.59, samples=44 lat (usec) : 100=0.13%, 250=0.91%, 500=0.39% lat (msec) : 2=0.13%, 4=0.91%, 10=6.12%, 20=21.88%, 50=58.72% lat (msec) : 100=10.68%, 250=0.13% cpu : usr=0.07%, sys=29.19%, ctx=3434, 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=181543: Mon Aug 10 05:56:23 2026 read: IOPS=16, BW=258KiB/s (264kB/s)(5744KiB/22305msec) clat (usec): min=98, max=85241, avg=30442.03, stdev=14968.95 lat (usec): min=99, max=85242, avg=30443.16, stdev=14969.18 clat percentiles (usec): | 1.00th=[ 157], 5.00th=[ 8848], 10.00th=[14484], 20.00th=[18220], | 30.00th=[21627], 40.00th=[25822], 50.00th=[28705], 60.00th=[32113], | 70.00th=[35914], 80.00th=[42206], 90.00th=[49546], 95.00th=[57410], | 99.00th=[73925], 99.50th=[81265], 99.90th=[85459], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 91, max= 506, per=24.84%, avg=255.86, stdev=83.92, samples=44 iops : min= 5, max= 31, avg=15.32, stdev= 5.30, samples=44 write: IOPS=18, BW=293KiB/s (300kB/s)(6544KiB/22305msec); 0 zone resets clat (usec): min=1092, max=131765, avg=27518.33, stdev=16329.55 lat (usec): min=1093, max=131767, avg=27519.64, stdev=16329.67 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 14], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 34], 80.00th=[ 41], 90.00th=[ 50], 95.00th=[ 58], | 99.00th=[ 70], 99.50th=[ 74], 99.90th=[ 132], 99.95th=[ 132], | 99.99th=[ 132] bw ( KiB/s): min= 160, max= 638, per=26.95%, avg=291.89, stdev=92.49, samples=44 iops : min= 10, max= 39, avg=17.57, stdev= 5.76, samples=44 lat (usec) : 100=0.13%, 250=1.17%, 500=0.65% lat (msec) : 2=0.52%, 4=0.52%, 10=6.12%, 20=21.88%, 50=60.03% lat (msec) : 100=8.85%, 250=0.13% cpu : usr=0.08%, sys=29.73%, ctx=3451, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181546: Mon Aug 10 05:56:23 2026 read: IOPS=16, BW=269KiB/s (276kB/s)(6256KiB/23248msec) clat (usec): min=93, max=83526, avg=31551.97, stdev=15390.72 lat (usec): min=94, max=83527, avg=31562.37, stdev=15395.08 clat percentiles (usec): | 1.00th=[ 143], 5.00th=[ 7570], 10.00th=[12649], 20.00th=[19268], | 30.00th=[23725], 40.00th=[27919], 50.00th=[31065], 60.00th=[34866], | 70.00th=[37487], 80.00th=[42730], 90.00th=[50070], 95.00th=[57410], | 99.00th=[79168], 99.50th=[83362], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 127, max= 638, per=26.12%, avg=269.00, stdev=105.80, samples=46 iops : min= 7, max= 39, avg=16.15, stdev= 6.70, samples=46 write: IOPS=16, BW=259KiB/s (266kB/s)(6032KiB/23248msec); 0 zone resets clat (usec): min=1915, max=96679, avg=28837.05, stdev=16110.27 lat (usec): min=1916, max=96682, avg=28838.44, stdev=16110.38 clat percentiles (usec): | 1.00th=[ 3884], 5.00th=[ 8455], 10.00th=[10552], 20.00th=[15270], | 30.00th=[17957], 40.00th=[22152], 50.00th=[26084], 60.00th=[31327], | 70.00th=[34866], 80.00th=[41157], 90.00th=[51119], 95.00th=[60031], | 99.00th=[73925], 99.50th=[82314], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 95, max= 640, per=23.49%, avg=254.43, stdev=91.56, samples=46 iops : min= 5, max= 40, avg=15.24, stdev= 5.84, samples=46 lat (usec) : 100=0.13%, 250=1.17%, 500=0.91% lat (msec) : 2=0.13%, 4=0.52%, 10=4.95%, 20=20.70%, 50=60.81% lat (msec) : 100=10.68% cpu : usr=0.07%, sys=28.36%, ctx=3545, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181547: Mon Aug 10 05:56:23 2026 read: IOPS=16, BW=266KiB/s (273kB/s)(6032KiB/22667msec) clat (usec): min=67, max=122405, avg=30530.75, stdev=15654.85 lat (usec): min=68, max=122406, avg=30531.39, stdev=15654.88 clat percentiles (usec): | 1.00th=[ 114], 5.00th=[ 273], 10.00th=[ 13698], 20.00th=[ 18744], | 30.00th=[ 22414], 40.00th=[ 25560], 50.00th=[ 29230], 60.00th=[ 33162], | 70.00th=[ 37487], 80.00th=[ 42206], 90.00th=[ 47973], 95.00th=[ 54789], | 99.00th=[ 73925], 99.50th=[ 92799], 99.90th=[122160], 99.95th=[122160], | 99.99th=[122160] bw ( KiB/s): min= 95, max= 512, per=25.68%, avg=264.47, stdev=88.53, samples=45 iops : min= 5, max= 32, avg=15.84, stdev= 5.60, samples=45 write: IOPS=17, BW=276KiB/s (283kB/s)(6256KiB/22667msec); 0 zone resets clat (msec): min=2, max=101, avg=28.17, stdev=16.76 lat (msec): min=2, max=101, avg=28.22, stdev=16.73 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 43], 90.00th=[ 52], 95.00th=[ 59], | 99.00th=[ 78], 99.50th=[ 92], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 157, max= 538, per=25.51%, avg=276.31, stdev=93.84, samples=45 iops : min= 9, max= 33, avg=16.60, stdev= 5.90, samples=45 lat (usec) : 100=0.39%, 250=1.69%, 500=0.65%, 750=0.13% lat (msec) : 4=0.52%, 10=6.77%, 20=19.66%, 50=60.29%, 100=9.64% lat (msec) : 250=0.26% cpu : usr=0.07%, sys=28.54%, ctx=3418, 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=1030KiB/s (1055kB/s), 258KiB/s-269KiB/s (264kB/s-276kB/s), io=23.4MiB (24.5MB), run=22305-23248msec WRITE: bw=1084KiB/s (1110kB/s), 259KiB/s-293KiB/s (266kB/s-300kB/s), io=24.6MiB (25.8MB), run=22305-23248msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181540: Mon Aug 10 05:56:24 2026 read: IOPS=15, BW=246KiB/s (252kB/s)(5920KiB/24038msec) clat (usec): min=4056, max=96455, avg=28652.82, stdev=19631.21 lat (usec): min=4057, max=96456, avg=28653.53, stdev=19631.44 clat percentiles (usec): | 1.00th=[ 5211], 5.00th=[ 6718], 10.00th=[ 7898], 20.00th=[12911], | 30.00th=[16450], 40.00th=[19530], 50.00th=[23462], 60.00th=[28181], | 70.00th=[31851], 80.00th=[40109], 90.00th=[62129], 95.00th=[70779], | 99.00th=[89654], 99.50th=[93848], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 64, max= 768, per=23.68%, avg=233.49, stdev=115.17, samples=47 iops : min= 4, max= 48, avg=14.04, stdev= 7.31, samples=47 write: IOPS=16, BW=265KiB/s (271kB/s)(6368KiB/24038msec); 0 zone resets clat (msec): min=6, max=155, avg=33.59, stdev=20.87 lat (msec): min=6, max=155, avg=33.59, stdev=20.87 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 29], 60.00th=[ 34], | 70.00th=[ 42], 80.00th=[ 48], 90.00th=[ 64], 95.00th=[ 73], | 99.00th=[ 94], 99.50th=[ 124], 99.90th=[ 157], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 62, max= 736, per=24.27%, avg=251.94, stdev=113.50, samples=47 iops : min= 3, max= 46, avg=15.19, stdev= 7.18, samples=47 lat (msec) : 10=10.68%, 20=24.09%, 50=47.66%, 100=17.19%, 250=0.39% cpu : usr=0.07%, sys=15.75%, ctx=2169, 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=181542: Mon Aug 10 05:56:24 2026 read: IOPS=14, BW=237KiB/s (242kB/s)(5744KiB/24268msec) clat (msec): min=3, max=150, avg=27.77, stdev=21.51 lat (msec): min=3, max=150, avg=27.77, stdev=21.51 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 7], 20.00th=[ 11], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 33], 80.00th=[ 40], 90.00th=[ 62], 95.00th=[ 73], | 99.00th=[ 90], 99.50th=[ 121], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 64, max= 1120, per=23.55%, avg=232.19, stdev=169.25, samples=48 iops : min= 4, max= 70, avg=13.96, stdev=10.65, samples=48 write: IOPS=16, BW=270KiB/s (276kB/s)(6544KiB/24268msec); 0 zone resets clat (msec): min=4, max=150, avg=34.81, stdev=24.25 lat (msec): min=4, max=150, avg=34.81, stdev=24.25 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 9], 20.00th=[ 14], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 53], 90.00th=[ 68], 95.00th=[ 85], | 99.00th=[ 111], 99.50th=[ 123], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 64, max= 1120, per=24.97%, avg=259.19, stdev=186.27, samples=48 iops : min= 4, max= 70, avg=15.65, stdev=11.79, samples=48 lat (msec) : 4=1.56%, 10=14.45%, 20=21.35%, 50=43.75%, 100=17.84% lat (msec) : 250=1.04% cpu : usr=0.05%, sys=15.11%, ctx=2196, 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=181544: Mon Aug 10 05:56:24 2026 read: IOPS=16, BW=261KiB/s (267kB/s)(6256KiB/23994msec) clat (usec): min=4534, max=96399, avg=27467.53, stdev=18835.27 lat (usec): min=4535, max=96401, avg=27468.27, stdev=18835.32 clat percentiles (usec): | 1.00th=[ 5211], 5.00th=[ 6718], 10.00th=[ 8225], 20.00th=[13173], | 30.00th=[16319], 40.00th=[19268], 50.00th=[22414], 60.00th=[25035], | 70.00th=[30540], 80.00th=[39584], 90.00th=[55313], 95.00th=[69731], | 99.00th=[89654], 99.50th=[92799], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 95, max= 1120, per=25.67%, avg=253.13, stdev=156.70, samples=47 iops : min= 5, max= 70, avg=15.26, stdev= 9.88, samples=47 write: IOPS=15, BW=251KiB/s (257kB/s)(6032KiB/23994msec); 0 zone resets clat (msec): min=6, max=127, avg=35.08, stdev=19.96 lat (msec): min=6, max=127, avg=35.08, stdev=19.96 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 12], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 37], | 70.00th=[ 42], 80.00th=[ 50], 90.00th=[ 62], 95.00th=[ 74], | 99.00th=[ 96], 99.50th=[ 118], 99.90th=[ 128], 99.95th=[ 128], | 99.99th=[ 128] bw ( KiB/s): min= 95, max= 544, per=22.81%, avg=236.81, stdev=82.73, samples=47 iops : min= 5, max= 34, avg=14.23, stdev= 5.32, samples=47 lat (msec) : 10=10.42%, 20=22.66%, 50=50.78%, 100=15.89%, 250=0.26% cpu : usr=0.08%, sys=15.68%, ctx=2161, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181545: Mon Aug 10 05:56:24 2026 read: IOPS=15, BW=250KiB/s (256kB/s)(6032KiB/24156msec) clat (msec): min=3, max=106, avg=28.24, stdev=20.42 lat (msec): min=3, max=106, avg=28.24, stdev=20.42 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 19], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 43], 90.00th=[ 58], 95.00th=[ 74], | 99.00th=[ 97], 99.50th=[ 104], 99.90th=[ 107], 99.95th=[ 107], | 99.99th=[ 107] bw ( KiB/s): min= 32, max= 1120, per=25.16%, avg=248.06, stdev=185.55, samples=48 iops : min= 2, max= 70, avg=14.96, stdev=11.71, samples=48 write: IOPS=16, BW=259KiB/s (265kB/s)(6256KiB/24156msec); 0 zone resets clat (msec): min=5, max=161, avg=34.32, stdev=22.46 lat (msec): min=5, max=161, avg=34.32, stdev=22.46 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 10], 20.00th=[ 15], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 30], 60.00th=[ 36], | 70.00th=[ 44], 80.00th=[ 53], 90.00th=[ 61], 95.00th=[ 73], | 99.00th=[ 116], 99.50th=[ 155], 99.90th=[ 163], 99.95th=[ 163], | 99.99th=[ 163] bw ( KiB/s): min= 95, max= 1152, per=24.98%, avg=259.25, stdev=176.56, samples=48 iops : min= 5, max= 72, avg=15.65, stdev=11.16, samples=48 lat (msec) : 4=0.26%, 10=15.63%, 20=19.79%, 50=45.96%, 100=17.58% lat (msec) : 250=0.78% cpu : usr=0.06%, sys=15.21%, ctx=2228, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=987KiB/s (1011kB/s), 237KiB/s-261KiB/s (242kB/s-267kB/s), io=23.4MiB (24.5MB), run=23994-24268msec WRITE: bw=1038KiB/s (1063kB/s), 251KiB/s-270KiB/s (257kB/s-276kB/s), io=24.6MiB (25.8MB), run=23994-24268msec 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=181557: Mon Aug 10 05:56:37 2026 read: IOPS=1, BW=1877KiB/s (1922kB/s)(7168KiB/3818msec) clat (usec): min=677, max=484244, avg=215739.63, stdev=168350.83 lat (usec): min=678, max=484245, avg=215741.20, stdev=168350.81 clat percentiles (usec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 24773], | 30.00th=[191890], 40.00th=[191890], 50.00th=[231736], 60.00th=[246416], | 70.00th=[246416], 80.00th=[333448], 90.00th=[484443], 95.00th=[484443], | 99.00th=[484443], 99.50th=[484443], 99.90th=[484443], 99.95th=[484443], | 99.99th=[484443] bw ( KiB/s): min= 1903, max= 3580, per=80.53%, avg=2765.25, stdev=921.13, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1341KiB/s (1373kB/s)(5120KiB/3818msec); 0 zone resets clat (msec): min=229, max=876, avg=453.95, stdev=261.07 lat (msec): min=229, max=876, avg=454.02, stdev=261.07 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 230], | 30.00th=[ 279], 40.00th=[ 279], 50.00th=[ 363], 60.00th=[ 363], | 70.00th=[ 523], 80.00th=[ 523], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1617, max= 2035, per=38.09%, avg=1831.50, stdev=179.07, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 lat (usec) : 750=8.33% lat (msec) : 50=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 1000=8.33% cpu : usr=0.03%, sys=50.04%, ctx=434, 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=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=181558: Mon Aug 10 05:56:37 2026 read: IOPS=0, BW=343KiB/s (352kB/s)(2048KiB/5963msec) clat (usec): min=617, max=242490, avg=121553.55, stdev=171030.02 lat (usec): min=618, max=242491, avg=121554.93, stdev=171030.20 clat percentiles (usec): | 1.00th=[ 619], 5.00th=[ 619], 10.00th=[ 619], 20.00th=[ 619], | 30.00th=[ 619], 40.00th=[ 619], 50.00th=[ 619], 60.00th=[242222], | 70.00th=[242222], 80.00th=[242222], 90.00th=[242222], 95.00th=[242222], | 99.00th=[242222], 99.50th=[242222], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 1771, max= 1903, per=53.49%, avg=1837.00, stdev=93.34, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1717KiB/s (1758kB/s)(10.0MiB/5963msec); 0 zone resets clat (msec): min=257, max=1007, avg=568.53, stdev=287.64 lat (msec): min=257, max=1007, avg=568.59, stdev=287.63 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 284], | 30.00th=[ 321], 40.00th=[ 326], 50.00th=[ 342], 60.00th=[ 735], | 70.00th=[ 751], 80.00th=[ 785], 90.00th=[ 877], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 1617, max= 4096, per=52.29%, avg=2514.29, stdev=996.17, samples=7 iops : min= 1, max= 4, avg= 1.71, stdev= 1.25, samples=7 lat (usec) : 750=8.33% lat (msec) : 250=8.33%, 500=41.67%, 750=16.67%, 1000=16.67%, 2000=8.33% cpu : usr=0.00%, sys=43.43%, ctx=314, 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=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=181559: Mon Aug 10 05:56:37 2026 read: IOPS=1, BW=1310KiB/s (1341kB/s)(6144KiB/4690msec) clat (usec): min=723, max=559054, avg=349331.97, stdev=208742.61 lat (usec): min=725, max=559055, avg=349333.21, stdev=208742.47 clat percentiles (usec): | 1.00th=[ 725], 5.00th=[ 725], 10.00th=[ 725], 20.00th=[270533], | 30.00th=[270533], 40.00th=[287310], 50.00th=[287310], 60.00th=[450888], | 70.00th=[526386], 80.00th=[526386], 90.00th=[557843], 95.00th=[557843], | 99.00th=[557843], 99.50th=[557843], 99.90th=[557843], 99.95th=[557843], | 99.99th=[557843] bw ( KiB/s): min= 1617, max= 3961, per=67.36%, avg=2313.00, stdev=1104.87, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1310KiB/s (1341kB/s)(6144KiB/4690msec); 0 zone resets clat (msec): min=234, max=857, avg=430.55, stdev=237.40 lat (msec): min=234, max=857, avg=430.63, stdev=237.38 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 234], 10.00th=[ 234], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 397], | 70.00th=[ 535], 80.00th=[ 535], 90.00th=[ 860], 95.00th=[ 860], | 99.00th=[ 860], 99.50th=[ 860], 99.90th=[ 860], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 1617, max= 3500, per=46.40%, avg=2231.00, stdev=730.07, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=16.67%, 500=41.67%, 750=25.00%, 1000=8.33% cpu : usr=0.02%, sys=49.95%, ctx=443, 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=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=181560: Mon Aug 10 05:56:37 2026 read: IOPS=1, BW=1092KiB/s (1119kB/s)(5120KiB/4687msec) clat (usec): min=593, max=416776, avg=210990.29, stdev=196377.80 lat (usec): min=596, max=416778, avg=210991.90, stdev=196377.81 clat percentiles (usec): | 1.00th=[ 594], 5.00th=[ 594], 10.00th=[ 594], 20.00th=[ 594], | 30.00th=[ 676], 40.00th=[ 676], 50.00th=[304088], 60.00th=[304088], | 70.00th=[329253], 80.00th=[329253], 90.00th=[417334], 95.00th=[417334], | 99.00th=[417334], 99.50th=[417334], 99.90th=[417334], 99.95th=[417334], | 99.99th=[417334] bw ( KiB/s): min= 3806, max= 3849, per=100.00%, avg=3827.50, stdev=30.41, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1529KiB/s (1566kB/s)(7168KiB/4687msec); 0 zone resets clat (msec): min=242, max=815, avg=516.28, stdev=215.52 lat (msec): min=242, max=815, avg=516.35, stdev=215.55 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 338], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 485], 60.00th=[ 523], | 70.00th=[ 523], 80.00th=[ 785], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 1617, max= 2023, per=38.52%, avg=1851.83, stdev=152.14, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (usec) : 750=16.67% lat (msec) : 250=8.33%, 500=50.00%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=51.32%, ctx=672, 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=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=3435KiB/s (3517kB/s), 343KiB/s-1877KiB/s (352kB/s-1922kB/s), io=20.0MiB (20.0MB), run=3818-5963msec WRITE: bw=4808KiB/s (4924kB/s), 1310KiB/s-1717KiB/s (1341kB/s-1758kB/s), io=28.0MiB (29.4MB), run=3818-5963msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181562: Mon Aug 10 05:56:37 2026 read: IOPS=1, BW=1272KiB/s (1303kB/s)(7168KiB/5635msec) clat (msec): min=59, max=1116, avg=321.43, stdev=380.60 lat (msec): min=59, max=1116, avg=321.43, stdev=380.60 clat percentiles (msec): | 1.00th=[ 60], 5.00th=[ 60], 10.00th=[ 60], 20.00th=[ 77], | 30.00th=[ 107], 40.00th=[ 107], 50.00th=[ 190], 60.00th=[ 205], | 70.00th=[ 205], 80.00th=[ 498], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 1464, max= 3961, per=65.30%, avg=2373.00, stdev=1092.24, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=909KiB/s (930kB/s)(5120KiB/5635msec); 0 zone resets clat (msec): min=106, max=1510, avg=608.30, stdev=548.53 lat (msec): min=106, max=1510, avg=608.38, stdev=548.52 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 107], 10.00th=[ 107], 20.00th=[ 107], | 30.00th=[ 305], 40.00th=[ 305], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 1519], 95.00th=[ 1519], | 99.00th=[ 1519], 99.50th=[ 1519], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 1889, max= 4096, per=58.81%, avg=2992.50, stdev=1560.58, samples=2 iops : min= 1, max= 4, avg= 2.50, stdev= 2.12, samples=2 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=8.33%, 2000=16.67% cpu : usr=0.00%, sys=19.05%, ctx=168, 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=181563: Mon Aug 10 05:56:37 2026 read: IOPS=0, BW=363KiB/s (372kB/s)(2048KiB/5635msec) clat (msec): min=85, max=630, avg=358.06, stdev=385.61 lat (msec): min=85, max=630, avg=358.06, stdev=385.61 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 86], | 30.00th=[ 86], 40.00th=[ 86], 50.00th=[ 86], 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= 1892, max= 2048, per=54.21%, avg=1970.00, stdev=110.31, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1817KiB/s (1861kB/s)(10.0MiB/5635msec); 0 zone resets clat (msec): min=50, max=1649, avg=465.79, stdev=464.86 lat (msec): min=50, max=1649, avg=465.85, stdev=464.85 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 126], | 30.00th=[ 128], 40.00th=[ 159], 50.00th=[ 376], 60.00th=[ 498], | 70.00th=[ 514], 80.00th=[ 518], 90.00th=[ 651], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 2019, max= 4096, per=46.74%, avg=2378.17, stdev=841.64, samples=6 iops : min= 1, max= 4, avg= 1.83, stdev= 1.17, samples=6 lat (msec) : 100=16.67%, 250=25.00%, 500=16.67%, 750=33.33%, 2000=8.33% cpu : usr=0.00%, sys=27.46%, ctx=468, 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=181564: Mon Aug 10 05:56:37 2026 read: IOPS=1, BW=1158KiB/s (1186kB/s)(6144KiB/5306msec) clat (msec): min=156, max=583, avg=266.00, stdev=164.22 lat (msec): min=156, max=583, avg=266.01, stdev=164.22 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 190], 50.00th=[ 190], 60.00th=[ 205], | 70.00th=[ 300], 80.00th=[ 300], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1889, max= 4096, per=73.68%, avg=2677.67, stdev=1230.88, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 write: IOPS=1, BW=1158KiB/s (1186kB/s)(6144KiB/5306msec); 0 zone resets clat (msec): min=114, max=1342, avg=565.92, stdev=479.56 lat (msec): min=114, max=1342, avg=565.99, stdev=479.57 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 115], 10.00th=[ 115], 20.00th=[ 213], | 30.00th=[ 213], 40.00th=[ 218], 50.00th=[ 218], 60.00th=[ 634], | 70.00th=[ 869], 80.00th=[ 869], 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= 1892, max= 3778, per=47.99%, avg=2441.50, stdev=894.03, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 250=58.33%, 500=8.33%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=15.55%, ctx=177, 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=181565: Mon Aug 10 05:56:37 2026 read: IOPS=0, BW=993KiB/s (1017kB/s)(5120KiB/5155msec) clat (msec): min=96, max=597, avg=240.19, stdev=209.85 lat (msec): min=96, max=597, avg=240.20, stdev=209.85 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 107], 40.00th=[ 107], 50.00th=[ 142], 60.00th=[ 142], | 70.00th=[ 259], 80.00th=[ 259], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 2027, max= 4096, per=74.95%, avg=2723.67, stdev=1188.52, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 write: IOPS=1, BW=1390KiB/s (1424kB/s)(7168KiB/5155msec); 0 zone resets clat (msec): min=168, max=1282, avg=523.63, stdev=397.17 lat (msec): min=168, max=1283, avg=523.71, stdev=397.18 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 241], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 330], 60.00th=[ 625], | 70.00th=[ 625], 80.00th=[ 751], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 1889, max= 2048, per=38.66%, avg=1967.20, stdev=74.23, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=20.08%, ctx=191, 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=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=3634KiB/s (3722kB/s), 363KiB/s-1272KiB/s (372kB/s-1303kB/s), io=20.0MiB (20.0MB), run=5155-5635msec WRITE: bw=5088KiB/s (5210kB/s), 909KiB/s-1817KiB/s (930kB/s-1861kB/s), io=28.0MiB (29.4MB), run=5155-5635msec 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=181576: Mon Aug 10 05:56:49 2026 read: IOPS=1, BW=4695KiB/s (4808kB/s)(12.0MiB/2617msec) clat (msec): min=814, max=905, avg=871.52, stdev=49.95 lat (msec): min=814, max=905, avg=871.52, stdev=49.95 clat percentiles (msec): | 1.00th=[ 818], 5.00th=[ 818], 10.00th=[ 818], 20.00th=[ 818], | 30.00th=[ 818], 40.00th=[ 894], 50.00th=[ 894], 60.00th=[ 894], | 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= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=61.54%, ctx=2630, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181577: Mon Aug 10 05:56:49 2026 read: IOPS=0, BW=1280KiB/s (1311kB/s)(4096KiB/3200msec) clat (nsec): min=865287k, max=865287k, avg=865287040.00, stdev= 0.00 lat (nsec): min=865289k, max=865289k, avg=865288808.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2560KiB/s (2621kB/s)(8192KiB/3200msec); 0 zone resets clat (msec): min=1135, max=1196, avg=1166.19, stdev=43.42 lat (msec): min=1135, max=1197, avg=1166.49, stdev=43.48 clat percentiles (msec): | 1.00th=[ 1133], 5.00th=[ 1133], 10.00th=[ 1133], 20.00th=[ 1133], | 30.00th=[ 1133], 40.00th=[ 1133], 50.00th=[ 1133], 60.00th=[ 1200], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8175, max= 8175, per=81.48%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=13.25%, ctx=690, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181578: Mon Aug 10 05:56:49 2026 write: IOPS=0, BW=3762KiB/s (3853kB/s)(12.0MiB/3266msec); 0 zone resets clat (msec): min=438, max=1915, avg=1087.57, stdev=754.93 lat (msec): min=438, max=1915, avg=1087.84, stdev=754.79 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 439], 10.00th=[ 439], 20.00th=[ 439], | 30.00th=[ 439], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 1921], 80.00th=[ 1921], 90.00th=[ 1921], 95.00th=[ 1921], | 99.00th=[ 1921], 99.50th=[ 1921], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 8175, max= 8192, per=81.57%, 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=16.14%, ctx=74, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181579: Mon Aug 10 05:56:49 2026 write: IOPS=1, BW=4334KiB/s (4438kB/s)(12.0MiB/2835msec); 0 zone resets clat (msec): min=396, max=1698, avg=943.91, stdev=674.92 lat (msec): min=397, max=1698, avg=944.28, stdev=675.05 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 397], 10.00th=[ 397], 20.00th=[ 397], | 30.00th=[ 397], 40.00th=[ 735], 50.00th=[ 735], 60.00th=[ 735], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 8192, max= 8192, per=81.65%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.04%, sys=21.45%, ctx=121, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5120KiB/s (5243kB/s), 1280KiB/s-4695KiB/s (1311kB/s-4808kB/s), io=16.0MiB (16.8MB), run=2617-3200msec WRITE: bw=9.80MiB/s (10.3MB/s), 2560KiB/s-4334KiB/s (2621kB/s-4438kB/s), io=32.0MiB (33.6MB), run=2835-3266msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181571: Mon Aug 10 05:56:49 2026 read: IOPS=1, BW=6946KiB/s (7113kB/s)(12.0MiB/1769msec) clat (msec): min=265, max=1131, avg=585.36, stdev=475.23 lat (msec): min=265, max=1131, avg=585.36, stdev=475.23 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 1133], 80.00th=[ 1133], 90.00th=[ 1133], 95.00th=[ 1133], | 99.00th=[ 1133], 99.50th=[ 1133], 99.90th=[ 1133], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7713, max= 7937, per=100.00%, avg=7825.00, stdev=158.39, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=27.88%, ctx=112, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181572: Mon Aug 10 05:56:49 2026 read: IOPS=0, BW=1085KiB/s (1111kB/s)(4096KiB/3774msec) clat (nsec): min=1358.6M, max=1358.6M, avg=1358627174.00, stdev= 0.00 lat (nsec): min=1358.6M, max=1358.6M, avg=1358630920.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1351], 5.00th=[ 1351], 10.00th=[ 1351], 20.00th=[ 1351], | 30.00th=[ 1351], 40.00th=[ 1351], 50.00th=[ 1351], 60.00th=[ 1351], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2171KiB/s (2223kB/s)(8192KiB/3774msec); 0 zone resets clat (msec): min=521, max=1796, avg=1159.09, stdev=901.28 lat (msec): min=522, max=1796, avg=1159.40, stdev=901.31 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 523], 50.00th=[ 523], 60.00th=[ 1804], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 8192, max= 8192, per=94.36%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=17.97%, ctx=140, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181573: Mon Aug 10 05:56:49 2026 write: IOPS=0, BW=3527KiB/s (3612kB/s)(12.0MiB/3484msec); 0 zone resets clat (msec): min=746, max=1482, avg=1152.51, stdev=373.92 lat (msec): min=746, max=1482, avg=1152.81, stdev=373.93 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 8192, max= 8192, per=94.36%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=13.38%, ctx=111, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181574: Mon Aug 10 05:56:49 2026 write: IOPS=1, BW=4271KiB/s (4374kB/s)(12.0MiB/2877msec); 0 zone resets clat (msec): min=261, max=1609, avg=947.44, stdev=674.76 lat (msec): min=261, max=1610, avg=947.78, stdev=674.75 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 262], | 30.00th=[ 262], 40.00th=[ 969], 50.00th=[ 969], 60.00th=[ 969], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 8000, max= 8175, per=93.15%, avg=8087.50, stdev=123.74, 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=20.83%, ctx=88, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=4341KiB/s (4445kB/s), 1085KiB/s-6946KiB/s (1111kB/s-7113kB/s), io=16.0MiB (16.8MB), run=1769-3774msec WRITE: bw=8683KiB/s (8891kB/s), 2171KiB/s-4271KiB/s (2223kB/s-4374kB/s), io=32.0MiB (33.6MB), run=2877-3774msec