== sanity test 398b: DIO and buffer IO race ============== 05:56:00 (1787392560) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.55904 s, 9.1 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=179664: Sat Aug 22 05:58:17 2026 read: IOPS=12, BW=51.2KiB/s (52.5kB/s)(5992KiB/116979msec) clat (usec): min=40, max=880758, avg=43063.77, stdev=33452.86 lat (usec): min=40, max=880759, avg=43065.07, stdev=33452.78 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 10552], 10.00th=[ 16712], 20.00th=[ 22152], | 30.00th=[ 26870], 40.00th=[ 32375], 50.00th=[ 38536], 60.00th=[ 44303], | 70.00th=[ 51643], 80.00th=[ 61080], 90.00th=[ 74974], 95.00th=[ 89654], | 99.00th=[129500], 99.50th=[152044], 99.90th=[183501], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 7, max= 111, per=25.06%, avg=51.12, stdev=18.96, samples=229 iops : min= 1, max= 27, avg=12.12, stdev= 4.78, samples=229 write: IOPS=13, BW=53.8KiB/s (55.1kB/s)(6296KiB/116979msec); 0 zone resets clat (usec): min=1109, max=370670, avg=33005.10, stdev=33893.22 lat (usec): min=1110, max=370672, avg=33012.68, stdev=33893.26 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1565], 10.00th=[ 2474], 20.00th=[ 4948], | 30.00th=[ 8717], 40.00th=[ 17171], 50.00th=[ 24773], 60.00th=[ 32113], | 70.00th=[ 41681], 80.00th=[ 53216], 90.00th=[ 77071], 95.00th=[ 95945], | 99.00th=[143655], 99.50th=[170918], 99.90th=[283116], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 7, max= 119, per=25.09%, avg=53.70, stdev=22.34, samples=229 iops : min= 1, max= 29, avg=12.77, stdev= 5.62, samples=229 lat (usec) : 50=0.13%, 100=1.60%, 250=0.26%, 1000=0.03% lat (msec) : 2=4.00%, 4=4.95%, 10=8.14%, 20=10.68%, 50=43.26% lat (msec) : 100=23.14%, 250=3.71%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=6.21%, ctx=6902, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179665: Sat Aug 22 05:58:17 2026 read: IOPS=12, BW=50.6KiB/s (51.8kB/s)(5940KiB/117354msec) clat (usec): min=42, max=271700, avg=43645.17, stdev=27461.03 lat (usec): min=43, max=271701, avg=43647.64, stdev=27460.55 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 11994], 10.00th=[ 16712], 20.00th=[ 22938], | 30.00th=[ 27657], 40.00th=[ 33162], 50.00th=[ 38536], 60.00th=[ 44303], | 70.00th=[ 52691], 80.00th=[ 62129], 90.00th=[ 76022], 95.00th=[ 90702], | 99.00th=[139461], 99.50th=[177210], 99.90th=[202376], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 103, per=24.62%, avg=50.23, stdev=19.88, samples=231 iops : min= 1, max= 25, avg=11.90, stdev= 5.00, samples=231 write: IOPS=13, BW=54.1KiB/s (55.4kB/s)(6348KiB/117354msec); 0 zone resets clat (usec): min=1127, max=874495, avg=32797.44, stdev=38396.15 lat (usec): min=1128, max=874496, avg=32799.04, stdev=38396.10 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 1450], 10.00th=[ 2180], 20.00th=[ 4424], | 30.00th=[ 8356], 40.00th=[ 16909], 50.00th=[ 23725], 60.00th=[ 31065], | 70.00th=[ 41157], 80.00th=[ 55313], 90.00th=[ 76022], 95.00th=[ 94897], | 99.00th=[141558], 99.50th=[160433], 99.90th=[304088], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 7, max= 149, per=25.14%, avg=53.80, stdev=22.34, samples=230 iops : min= 1, max= 37, avg=12.80, stdev= 5.62, samples=230 lat (usec) : 50=0.26%, 100=1.27%, 250=0.16% lat (msec) : 2=4.82%, 4=4.62%, 10=7.71%, 20=11.56%, 50=41.89% lat (msec) : 100=23.93%, 250=3.68%, 500=0.07%, 1000=0.03% cpu : usr=0.09%, sys=6.18%, ctx=6897, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179666: Sat Aug 22 05:58:17 2026 read: IOPS=13, BW=52.5KiB/s (53.7kB/s)(6028KiB/114850msec) clat (usec): min=32, max=210951, avg=41687.05, stdev=26291.60 lat (usec): min=32, max=210953, avg=41691.82, stdev=26294.42 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 11469], 10.00th=[ 16581], 20.00th=[ 21890], | 30.00th=[ 26608], 40.00th=[ 31065], 50.00th=[ 36439], 60.00th=[ 42730], | 70.00th=[ 49546], 80.00th=[ 58459], 90.00th=[ 72877], 95.00th=[ 90702], | 99.00th=[133694], 99.50th=[156238], 99.90th=[202376], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 7, max= 111, per=25.70%, avg=52.43, stdev=19.03, samples=225 iops : min= 1, max= 27, avg=12.46, stdev= 4.81, samples=225 write: IOPS=13, BW=54.5KiB/s (55.8kB/s)(6260KiB/114850msec); 0 zone resets clat (usec): min=1073, max=825942, avg=32934.25, stdev=38626.33 lat (usec): min=1074, max=825943, avg=32938.03, stdev=38625.08 clat percentiles (usec): | 1.00th=[ 1287], 5.00th=[ 1467], 10.00th=[ 2040], 20.00th=[ 4293], | 30.00th=[ 7308], 40.00th=[ 14746], 50.00th=[ 23462], 60.00th=[ 31851], | 70.00th=[ 42206], 80.00th=[ 55313], 90.00th=[ 79168], 95.00th=[ 96994], | 99.00th=[145753], 99.50th=[175113], 99.90th=[212861], 99.95th=[826278], | 99.99th=[826278] bw ( KiB/s): min= 7, max= 119, per=25.45%, avg=54.45, stdev=23.62, samples=225 iops : min= 1, max= 29, avg=12.96, stdev= 5.95, samples=225 lat (usec) : 50=0.16%, 100=1.56%, 250=0.23%, 500=0.03%, 750=0.07% lat (msec) : 2=4.75%, 4=4.82%, 10=8.50%, 20=10.84%, 50=42.51% lat (msec) : 100=22.66%, 250=3.84%, 1000=0.03% cpu : usr=0.08%, sys=6.41%, ctx=6792, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179667: Sat Aug 22 05:58:17 2026 read: IOPS=13, BW=52.3KiB/s (53.5kB/s)(6052KiB/115742msec) clat (usec): min=32, max=271995, avg=41969.63, stdev=27300.25 lat (usec): min=32, max=271996, avg=41972.01, stdev=27299.64 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 9372], 10.00th=[ 16712], 20.00th=[ 21890], | 30.00th=[ 26608], 40.00th=[ 31589], 50.00th=[ 36963], 60.00th=[ 42730], | 70.00th=[ 49546], 80.00th=[ 58459], 90.00th=[ 73925], 95.00th=[ 88605], | 99.00th=[129500], 99.50th=[175113], 99.90th=[238027], 99.95th=[270533], | 99.99th=[270533] bw ( KiB/s): min= 7, max= 111, per=25.81%, avg=52.65, stdev=17.94, samples=225 iops : min= 1, max= 27, avg=12.51, stdev= 4.51, samples=225 write: IOPS=13, BW=53.9KiB/s (55.2kB/s)(6236KiB/115742msec); 0 zone resets clat (usec): min=1082, max=873384, avg=33215.29, stdev=39290.71 lat (usec): min=1083, max=873385, avg=33221.90, stdev=39287.68 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1418], 10.00th=[ 1958], 20.00th=[ 3949], | 30.00th=[ 7111], 40.00th=[ 14746], 50.00th=[ 23725], 60.00th=[ 32113], | 70.00th=[ 42206], 80.00th=[ 56361], 90.00th=[ 80217], 95.00th=[100140], | 99.00th=[141558], 99.50th=[154141], 99.90th=[256902], 99.95th=[876610], | 99.99th=[876610] bw ( KiB/s): min= 7, max= 127, per=25.13%, avg=53.77, stdev=21.57, samples=227 iops : min= 1, max= 31, avg=12.79, stdev= 5.44, samples=227 lat (usec) : 50=0.36%, 100=1.69%, 250=0.10%, 500=0.07%, 750=0.03% lat (msec) : 2=5.21%, 4=5.08%, 10=7.81%, 20=10.22%, 50=42.55% lat (msec) : 100=22.75%, 250=4.04%, 500=0.07%, 1000=0.03% cpu : usr=0.07%, sys=6.17%, ctx=6728, 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=205KiB/s (210kB/s), 50.6KiB/s-52.5KiB/s (51.8kB/s-53.7kB/s), io=23.4MiB (24.6MB), run=114850-117354msec WRITE: bw=214KiB/s (219kB/s), 53.8KiB/s-54.5KiB/s (55.1kB/s-55.8kB/s), io=24.6MiB (25.7MB), run=114850-117354msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179660: Sat Aug 22 05:58:55 2026 read: IOPS=9, BW=39.3KiB/s (40.2kB/s)(5992KiB/152510msec) clat (msec): min=6, max=905, avg=39.29, stdev=40.28 lat (msec): min=6, max=905, avg=39.29, stdev=40.28 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 56], 90.00th=[ 84], 95.00th=[ 110], | 99.00th=[ 174], 99.50th=[ 188], 99.90th=[ 271], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 151, per=25.88%, avg=39.85, stdev=26.48, samples=293 iops : min= 1, max= 37, avg= 9.30, stdev= 6.65, samples=293 write: IOPS=10, BW=41.3KiB/s (42.3kB/s)(6296KiB/152510msec); 0 zone resets clat (msec): min=9, max=486, avg=59.22, stdev=41.35 lat (msec): min=9, max=486, avg=59.23, stdev=41.35 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 22], 10.00th=[ 24], 20.00th=[ 29], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 87], 90.00th=[ 114], 95.00th=[ 136], | 99.00th=[ 192], 99.50th=[ 243], 99.90th=[ 368], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 7, max= 127, per=25.43%, avg=41.20, stdev=25.37, samples=298 iops : min= 1, max= 31, avg= 9.63, stdev= 6.39, samples=298 lat (msec) : 10=2.12%, 20=16.67%, 50=46.29%, 100=24.28%, 250=10.38% lat (msec) : 500=0.23%, 1000=0.03% cpu : usr=0.05%, sys=2.43%, ctx=5080, 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=179661: Sat Aug 22 05:58:55 2026 read: IOPS=9, BW=38.3KiB/s (39.2kB/s)(5940KiB/155160msec) clat (msec): min=5, max=777, avg=40.51, stdev=40.54 lat (msec): min=5, max=777, avg=40.51, stdev=40.54 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 33], | 70.00th=[ 43], 80.00th=[ 59], 90.00th=[ 88], 95.00th=[ 120], | 99.00th=[ 178], 99.50th=[ 201], 99.90th=[ 351], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 135, per=25.01%, avg=38.52, stdev=26.75, samples=300 iops : min= 1, max= 33, avg= 8.97, stdev= 6.72, samples=300 write: IOPS=10, BW=40.9KiB/s (41.9kB/s)(6348KiB/155160msec); 0 zone resets clat (msec): min=12, max=337, avg=59.58, stdev=40.99 lat (msec): min=12, max=337, avg=59.58, stdev=40.99 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 88], 90.00th=[ 112], 95.00th=[ 142], | 99.00th=[ 209], 99.50th=[ 232], 99.90th=[ 296], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 7, max= 124, per=24.93%, avg=40.39, stdev=24.68, samples=305 iops : min= 1, max= 31, avg= 9.44, stdev= 6.22, samples=305 lat (msec) : 10=2.25%, 20=15.72%, 50=46.78%, 100=23.67%, 250=11.36% lat (msec) : 500=0.20%, 1000=0.03% cpu : usr=0.06%, sys=2.41%, ctx=5157, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179662: Sat Aug 22 05:58:55 2026 read: IOPS=9, BW=39.2KiB/s (40.1kB/s)(6028KiB/153822msec) clat (msec): min=5, max=345, avg=39.44, stdev=34.28 lat (msec): min=5, max=345, avg=39.45, stdev=34.28 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 44], 80.00th=[ 58], 90.00th=[ 85], 95.00th=[ 114], | 99.00th=[ 161], 99.50th=[ 188], 99.90th=[ 279], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 167, per=25.73%, avg=39.63, stdev=27.55, samples=297 iops : min= 1, max= 41, avg= 9.25, stdev= 6.92, samples=297 write: IOPS=10, BW=40.7KiB/s (41.7kB/s)(6260KiB/153822msec); 0 zone resets clat (msec): min=12, max=803, avg=60.01, stdev=47.22 lat (msec): min=12, max=803, avg=60.02, stdev=47.22 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 23], 20.00th=[ 28], | 30.00th=[ 33], 40.00th=[ 38], 50.00th=[ 44], 60.00th=[ 55], | 70.00th=[ 68], 80.00th=[ 88], 90.00th=[ 114], 95.00th=[ 144], | 99.00th=[ 224], 99.50th=[ 268], 99.90th=[ 376], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 127, per=24.99%, avg=40.49, stdev=25.79, samples=302 iops : min= 1, max= 31, avg= 9.46, stdev= 6.50, samples=302 lat (msec) : 10=2.44%, 20=16.83%, 50=46.13%, 100=23.63%, 250=10.51% lat (msec) : 500=0.42%, 1000=0.03% cpu : usr=0.05%, sys=2.47%, ctx=5118, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179663: Sat Aug 22 05:58:55 2026 read: IOPS=9, BW=39.2KiB/s (40.1kB/s)(6052KiB/154391msec) clat (msec): min=5, max=232, avg=39.46, stdev=34.11 lat (msec): min=5, max=232, avg=39.46, stdev=34.11 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 42], 80.00th=[ 58], 90.00th=[ 89], 95.00th=[ 116], | 99.00th=[ 159], 99.50th=[ 174], 99.90th=[ 213], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 7, max= 183, per=25.83%, avg=39.78, stdev=27.75, samples=297 iops : min= 1, max= 45, avg= 9.28, stdev= 6.97, samples=297 write: IOPS=10, BW=40.4KiB/s (41.4kB/s)(6236KiB/154391msec); 0 zone resets clat (msec): min=11, max=810, avg=60.42, stdev=47.05 lat (msec): min=11, max=810, avg=60.43, stdev=47.04 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 21], 10.00th=[ 24], 20.00th=[ 28], | 30.00th=[ 34], 40.00th=[ 39], 50.00th=[ 46], 60.00th=[ 56], | 70.00th=[ 69], 80.00th=[ 88], 90.00th=[ 116], 95.00th=[ 138], | 99.00th=[ 213], 99.50th=[ 268], 99.90th=[ 485], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 119, per=24.80%, avg=40.17, stdev=24.51, samples=303 iops : min= 1, max= 29, avg= 9.38, stdev= 6.18, samples=303 lat (msec) : 10=2.54%, 20=16.54%, 50=45.87%, 100=23.63%, 250=11.10% lat (msec) : 500=0.29%, 1000=0.03% cpu : usr=0.06%, sys=2.51%, ctx=5142, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=155KiB/s (158kB/s), 38.3KiB/s-39.3KiB/s (39.2kB/s-40.2kB/s), io=23.4MiB (24.6MB), run=152510-155160msec WRITE: bw=162KiB/s (166kB/s), 40.4KiB/s-41.3KiB/s (41.4kB/s-42.3kB/s), io=24.6MiB (25.7MB), run=152510-155160msec 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=179711: Sat Aug 22 05:59:36 2026 read: IOPS=12, BW=192KiB/s (197kB/s)(5920KiB/30800msec) clat (usec): min=36, max=191875, avg=45284.61, stdev=30506.26 lat (usec): min=36, max=191876, avg=45285.84, stdev=30506.21 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 90], 20.00th=[ 22938], | 30.00th=[ 30802], 40.00th=[ 35390], 50.00th=[ 42730], 60.00th=[ 49546], | 70.00th=[ 56886], 80.00th=[ 64750], 90.00th=[ 77071], 95.00th=[ 94897], | 99.00th=[152044], 99.50th=[181404], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 93, max= 376, per=26.28%, avg=190.77, stdev=67.23, samples=60 iops : min= 5, max= 23, avg=11.23, stdev= 4.20, samples=60 write: IOPS=12, BW=207KiB/s (212kB/s)(6368KiB/30800msec); 0 zone resets clat (usec): min=1557, max=176117, avg=34655.22, stdev=32428.48 lat (usec): min=1559, max=176119, avg=34670.19, stdev=32420.13 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 2114], 10.00th=[ 3359], 20.00th=[ 6390], | 30.00th=[ 10945], 40.00th=[ 17433], 50.00th=[ 23987], 60.00th=[ 33817], | 70.00th=[ 44303], 80.00th=[ 59507], 90.00th=[ 82314], 95.00th=[100140], | 99.00th=[131597], 99.50th=[154141], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 29, max= 413, per=27.04%, avg=206.57, stdev=92.02, samples=60 iops : min= 1, max= 25, avg=12.23, stdev= 5.86, samples=60 lat (usec) : 50=0.52%, 100=4.56%, 250=0.52%, 500=0.13% lat (msec) : 2=2.21%, 4=4.43%, 10=8.46%, 20=8.98%, 50=38.54% lat (msec) : 100=26.95%, 250=4.69% cpu : usr=0.06%, sys=6.06%, ctx=1699, 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=179712: Sat Aug 22 05:59:36 2026 read: IOPS=10, BW=174KiB/s (178kB/s)(5744KiB/32975msec) clat (usec): min=43, max=217357, avg=46425.72, stdev=32388.99 lat (usec): min=43, max=217358, avg=46427.10, stdev=32388.80 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 63], 10.00th=[ 79], 20.00th=[ 22152], | 30.00th=[ 28443], 40.00th=[ 36439], 50.00th=[ 42730], 60.00th=[ 49546], | 70.00th=[ 59507], 80.00th=[ 69731], 90.00th=[ 88605], 95.00th=[103285], | 99.00th=[152044], 99.50th=[164627], 99.90th=[217056], 99.95th=[217056], | 99.99th=[217056] bw ( KiB/s): min= 29, max= 382, per=24.04%, avg=174.51, stdev=72.13, samples=65 iops : min= 1, max= 23, avg=10.22, stdev= 4.55, samples=65 write: IOPS=12, BW=198KiB/s (203kB/s)(6544KiB/32975msec); 0 zone resets clat (usec): min=1566, max=223619, avg=39690.53, stdev=37351.70 lat (usec): min=1567, max=223621, avg=39692.69, stdev=37351.83 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2507], 10.00th=[ 4047], 20.00th=[ 7111], | 30.00th=[ 11731], 40.00th=[ 19792], 50.00th=[ 28705], 60.00th=[ 40109], | 70.00th=[ 52167], 80.00th=[ 67634], 90.00th=[ 90702], 95.00th=[110625], | 99.00th=[156238], 99.50th=[181404], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 62, max= 533, per=25.88%, avg=197.74, stdev=87.72, samples=65 iops : min= 3, max= 33, avg=11.69, stdev= 5.57, samples=65 lat (usec) : 50=0.13%, 100=5.08%, 250=0.78%, 750=0.13% lat (msec) : 2=1.69%, 4=3.52%, 10=9.24%, 20=8.98%, 50=35.16% lat (msec) : 100=28.52%, 250=6.77% cpu : usr=0.06%, sys=6.09%, ctx=1774, 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=179713: Sat Aug 22 05:59:36 2026 read: IOPS=11, BW=192KiB/s (197kB/s)(6256KiB/32590msec) clat (usec): min=37, max=337764, avg=48290.75, stdev=36178.50 lat (usec): min=37, max=337765, avg=48291.89, stdev=36178.50 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 62], 10.00th=[ 750], 20.00th=[ 24773], | 30.00th=[ 30278], 40.00th=[ 36963], 50.00th=[ 42730], 60.00th=[ 49021], | 70.00th=[ 56886], 80.00th=[ 69731], 90.00th=[ 90702], 95.00th=[107480], | 99.00th=[164627], 99.50th=[219153], 99.90th=[337642], 99.95th=[337642], | 99.99th=[337642] bw ( KiB/s): min= 29, max= 316, per=26.53%, avg=192.61, stdev=63.61, samples=64 iops : min= 1, max= 19, avg=11.36, stdev= 4.03, samples=64 write: IOPS=11, BW=185KiB/s (190kB/s)(6032KiB/32590msec); 0 zone resets clat (usec): min=1522, max=183069, avg=35866.26, stdev=32646.98 lat (usec): min=1524, max=183072, avg=35874.53, stdev=32645.87 clat percentiles (usec): | 1.00th=[ 1795], 5.00th=[ 2245], 10.00th=[ 3818], 20.00th=[ 5473], | 30.00th=[ 10814], 40.00th=[ 19006], 50.00th=[ 27132], 60.00th=[ 35914], | 70.00th=[ 46924], 80.00th=[ 65799], 90.00th=[ 80217], 95.00th=[ 98042], | 99.00th=[143655], 99.50th=[158335], 99.90th=[183501], 99.95th=[183501], | 99.99th=[183501] bw ( KiB/s): min= 31, max= 372, per=24.10%, avg=184.11, stdev=73.33, samples=64 iops : min= 1, max= 23, avg=10.83, stdev= 4.71, samples=64 lat (usec) : 50=0.26%, 100=4.17%, 250=0.39%, 500=0.13%, 750=0.26% lat (msec) : 2=1.43%, 4=3.91%, 10=9.38%, 20=7.68%, 50=39.32% lat (msec) : 100=27.73%, 250=5.21%, 500=0.13% cpu : usr=0.03%, sys=6.20%, ctx=1784, 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=179714: Sat Aug 22 05:59:36 2026 read: IOPS=12, BW=196KiB/s (201kB/s)(6032KiB/30749msec) clat (usec): min=34, max=163944, avg=46350.81, stdev=30502.93 lat (usec): min=34, max=163945, avg=46352.10, stdev=30502.77 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 104], 20.00th=[ 20841], | 30.00th=[ 29492], 40.00th=[ 36963], 50.00th=[ 44303], 60.00th=[ 52167], | 70.00th=[ 61080], 80.00th=[ 70779], 90.00th=[ 85459], 95.00th=[ 98042], | 99.00th=[132645], 99.50th=[143655], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 29, max= 350, per=26.94%, avg=195.57, stdev=69.61, samples=60 iops : min= 1, max= 21, avg=11.53, stdev= 4.38, samples=60 write: IOPS=12, BW=203KiB/s (208kB/s)(6256KiB/30749msec); 0 zone resets clat (usec): min=1517, max=165625, avg=33133.03, stdev=31124.63 lat (usec): min=1518, max=165628, avg=33144.78, stdev=31115.76 clat percentiles (usec): | 1.00th=[ 1598], 5.00th=[ 2180], 10.00th=[ 3458], 20.00th=[ 6390], | 30.00th=[ 9765], 40.00th=[ 14877], 50.00th=[ 23987], 60.00th=[ 32375], | 70.00th=[ 42206], 80.00th=[ 58983], 90.00th=[ 76022], 95.00th=[ 94897], | 99.00th=[132645], 99.50th=[137364], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 61, max= 474, per=26.71%, avg=204.07, stdev=88.24, samples=60 iops : min= 3, max= 29, avg=12.07, stdev= 5.59, samples=60 lat (usec) : 50=0.39%, 100=4.30%, 250=1.04%, 500=0.13%, 750=0.39% lat (msec) : 2=2.47%, 4=3.91%, 10=9.90%, 20=9.77%, 50=34.38% lat (msec) : 100=29.43%, 250=3.91% cpu : usr=0.05%, sys=6.07%, ctx=1652, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=726KiB/s (744kB/s), 174KiB/s-196KiB/s (178kB/s-201kB/s), io=23.4MiB (24.5MB), run=30749-32975msec WRITE: bw=764KiB/s (783kB/s), 185KiB/s-207KiB/s (190kB/s-212kB/s), io=24.6MiB (25.8MB), run=30749-32975msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179707: Sat Aug 22 05:59:49 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(5920KiB/45475msec) clat (msec): min=7, max=234, avg=47.05, stdev=37.58 lat (msec): min=7, max=234, avg=47.05, stdev=37.58 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 25], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 53], 80.00th=[ 70], 90.00th=[ 97], 95.00th=[ 130], | 99.00th=[ 182], 99.50th=[ 215], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 31, max= 415, per=25.13%, avg=132.20, stdev=78.38, samples=86 iops : min= 1, max= 25, avg= 7.44, stdev= 4.94, samples=86 write: IOPS=8, BW=140KiB/s (143kB/s)(6368KiB/45475msec); 0 zone resets clat (msec): min=15, max=241, avg=70.14, stdev=43.16 lat (msec): min=15, max=241, avg=70.15, stdev=43.16 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 41], 40.00th=[ 47], 50.00th=[ 55], 60.00th=[ 69], | 70.00th=[ 83], 80.00th=[ 102], 90.00th=[ 142], 95.00th=[ 163], | 99.00th=[ 199], 99.50th=[ 232], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 31, max= 376, per=25.35%, avg=140.42, stdev=79.29, samples=88 iops : min= 1, max= 23, avg= 7.97, stdev= 4.99, samples=88 lat (msec) : 10=0.91%, 20=9.51%, 50=46.09%, 100=28.13%, 250=15.36% cpu : usr=0.05%, sys=2.14%, ctx=1221, 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=179708: Sat Aug 22 05:59:49 2026 read: IOPS=7, BW=127KiB/s (130kB/s)(5744KiB/45078msec) clat (msec): min=8, max=267, avg=46.43, stdev=38.72 lat (msec): min=8, max=267, avg=46.43, stdev=38.72 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 51], 80.00th=[ 65], 90.00th=[ 96], 95.00th=[ 124], | 99.00th=[ 209], 99.50th=[ 220], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 28, max= 415, per=24.85%, avg=130.71, stdev=86.59, samples=85 iops : min= 1, max= 25, avg= 7.32, stdev= 5.43, samples=85 write: IOPS=9, BW=145KiB/s (149kB/s)(6544KiB/45078msec); 0 zone resets clat (msec): min=15, max=293, avg=69.31, stdev=43.33 lat (msec): min=15, max=293, avg=69.32, stdev=43.35 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 36], | 30.00th=[ 42], 40.00th=[ 48], 50.00th=[ 55], 60.00th=[ 65], | 70.00th=[ 83], 80.00th=[ 105], 90.00th=[ 130], 95.00th=[ 155], | 99.00th=[ 194], 99.50th=[ 251], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 31, max= 376, per=26.00%, avg=144.05, stdev=78.46, samples=87 iops : min= 1, max= 23, avg= 8.18, stdev= 4.93, samples=87 lat (msec) : 10=0.26%, 20=10.55%, 50=44.92%, 100=28.39%, 250=15.36% lat (msec) : 500=0.52% cpu : usr=0.05%, sys=2.20%, ctx=1231, 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=179709: Sat Aug 22 05:59:49 2026 read: IOPS=8, BW=138KiB/s (141kB/s)(6256KiB/45426msec) clat (msec): min=6, max=277, avg=47.95, stdev=42.69 lat (msec): min=6, max=277, avg=47.95, stdev=42.69 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 51], 80.00th=[ 71], 90.00th=[ 103], 95.00th=[ 138], | 99.00th=[ 230], 99.50th=[ 262], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 31, max= 478, per=26.51%, avg=139.43, stdev=100.19, samples=88 iops : min= 1, max= 29, avg= 7.90, stdev= 6.30, samples=88 write: IOPS=8, BW=133KiB/s (136kB/s)(6032KiB/45426msec); 0 zone resets clat (msec): min=17, max=299, avg=70.38, stdev=45.37 lat (msec): min=17, max=299, avg=70.39, stdev=45.37 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 34], | 30.00th=[ 42], 40.00th=[ 47], 50.00th=[ 56], 60.00th=[ 67], | 70.00th=[ 82], 80.00th=[ 102], 90.00th=[ 136], 95.00th=[ 167], | 99.00th=[ 218], 99.50th=[ 234], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 315, per=24.07%, avg=133.32, stdev=71.31, samples=87 iops : min= 1, max= 19, avg= 7.52, stdev= 4.48, samples=87 lat (msec) : 10=0.65%, 20=10.68%, 50=45.44%, 100=27.73%, 250=15.10% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=2.28%, ctx=1286, 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=179710: Sat Aug 22 05:59:49 2026 read: IOPS=8, BW=133KiB/s (136kB/s)(6032KiB/45262msec) clat (msec): min=7, max=211, avg=48.31, stdev=38.35 lat (msec): min=7, max=211, avg=48.31, stdev=38.35 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 21], | 30.00th=[ 26], 40.00th=[ 31], 50.00th=[ 34], 60.00th=[ 42], | 70.00th=[ 50], 80.00th=[ 66], 90.00th=[ 109], 95.00th=[ 140], | 99.00th=[ 184], 99.50th=[ 197], 99.90th=[ 211], 99.95th=[ 211], | 99.99th=[ 211] bw ( KiB/s): min= 31, max= 380, per=25.85%, avg=135.98, stdev=82.99, samples=86 iops : min= 1, max= 23, avg= 7.67, stdev= 5.23, samples=86 write: IOPS=8, BW=138KiB/s (142kB/s)(6256KiB/45262msec); 0 zone resets clat (msec): min=16, max=252, avg=68.80, stdev=44.85 lat (msec): min=16, max=252, avg=68.80, stdev=44.85 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 25], 10.00th=[ 29], 20.00th=[ 35], | 30.00th=[ 40], 40.00th=[ 46], 50.00th=[ 53], 60.00th=[ 63], | 70.00th=[ 80], 80.00th=[ 107], 90.00th=[ 134], 95.00th=[ 157], | 99.00th=[ 218], 99.50th=[ 249], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 31, max= 351, per=25.16%, avg=139.39, stdev=82.67, samples=88 iops : min= 1, max= 21, avg= 7.90, stdev= 5.21, samples=88 lat (msec) : 10=1.04%, 20=8.46%, 50=49.22%, 100=24.61%, 250=16.54% lat (msec) : 500=0.13% cpu : usr=0.05%, sys=2.29%, ctx=1305, 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=527KiB/s (539kB/s), 127KiB/s-138KiB/s (130kB/s-141kB/s), io=23.4MiB (24.5MB), run=45078-45475msec WRITE: bw=554KiB/s (567kB/s), 133KiB/s-145KiB/s (136kB/s-149kB/s), io=24.6MiB (25.8MB), run=45078-45475msec 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=179731: Sat Aug 22 06:00:06 2026 read: IOPS=1, BW=1347KiB/s (1379kB/s)(7168KiB/5321msec) clat (usec): min=572, max=404736, avg=185935.58, stdev=124291.08 lat (usec): min=572, max=404738, avg=186208.57, stdev=124415.99 clat percentiles (usec): | 1.00th=[ 570], 5.00th=[ 570], 10.00th=[ 570], 20.00th=[135267], | 30.00th=[141558], 40.00th=[141558], 50.00th=[152044], 60.00th=[233833], | 70.00th=[233833], 80.00th=[233833], 90.00th=[404751], 95.00th=[404751], | 99.00th=[404751], 99.50th=[404751], 99.90th=[404751], 99.95th=[404751], | 99.99th=[404751] bw ( KiB/s): min= 1858, max= 4047, per=82.47%, avg=2387.60, stdev=930.76, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=0, BW=962KiB/s (985kB/s)(5120KiB/5321msec); 0 zone resets clat (msec): min=182, max=2544, avg=756.42, stdev=1009.21 lat (msec): min=182, max=2544, avg=756.58, stdev=1009.18 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 182], | 30.00th=[ 228], 40.00th=[ 228], 50.00th=[ 284], 60.00th=[ 284], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 2534], 95.00th=[ 2534], | 99.00th=[ 2534], 99.50th=[ 2534], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min= 1858, max= 2048, per=48.49%, avg=1965.75, stdev=82.31, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=58.33%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.08%, sys=11.86%, ctx=241, 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=179732: Sat Aug 22 06:00:06 2026 read: IOPS=0, BW=303KiB/s (310kB/s)(2048KiB/6755msec) clat (msec): min=5, max=2844, avg=1424.61, stdev=2007.37 lat (msec): min=5, max=2844, avg=1424.62, stdev=2007.37 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 6], | 30.00th=[ 6], 40.00th=[ 6], 50.00th=[ 6], 60.00th=[ 2836], | 70.00th=[ 2836], 80.00th=[ 2836], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 2035, max= 2048, per=70.52%, avg=2041.50, stdev= 9.19, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1516KiB/s (1552kB/s)(10.0MiB/6755msec); 0 zone resets clat (msec): min=179, max=700, avg=383.57, stdev=164.51 lat (msec): min=179, max=700, avg=383.65, stdev=164.51 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 213], | 30.00th=[ 251], 40.00th=[ 300], 50.00th=[ 359], 60.00th=[ 393], | 70.00th=[ 409], 80.00th=[ 447], 90.00th=[ 592], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1858, max= 4079, per=62.64%, avg=2539.57, stdev=993.63, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.95, samples=7 lat (msec) : 10=8.33%, 250=16.67%, 500=50.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=12.13%, ctx=527, 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=179733: Sat Aug 22 06:00:06 2026 read: IOPS=0, BW=869KiB/s (890kB/s)(6144KiB/7072msec) clat (usec): min=990, max=322545, avg=178900.60, stdev=104782.89 lat (usec): min=991, max=322545, avg=178901.81, stdev=104782.80 clat percentiles (usec): | 1.00th=[ 988], 5.00th=[ 988], 10.00th=[ 988], 20.00th=[164627], | 30.00th=[164627], 40.00th=[173016], 50.00th=[173016], 60.00th=[183501], | 70.00th=[227541], 80.00th=[227541], 90.00th=[320865], 95.00th=[320865], | 99.00th=[320865], 99.50th=[320865], 99.90th=[320865], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 1957, max= 3856, per=85.22%, avg=2467.00, stdev=926.75, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=0, BW=869KiB/s (890kB/s)(6144KiB/7072msec); 0 zone resets clat (msec): min=167, max=3398, avg=977.54, stdev=1209.96 lat (msec): min=167, max=3399, avg=977.62, stdev=1209.97 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 735], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 3406], 95.00th=[ 3406], | 99.00th=[ 3406], 99.50th=[ 3406], 99.90th=[ 3406], 99.95th=[ 3406], | 99.99th=[ 3406] bw ( KiB/s): min= 1950, max= 2039, per=49.27%, avg=1997.60, stdev=42.18, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 1000=8.33% lat (msec) : 250=41.67%, 500=16.67%, 750=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=7.18%, ctx=247, 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=179734: Sat Aug 22 06:00:06 2026 read: IOPS=0, BW=810KiB/s (829kB/s)(5120KiB/6321msec) clat (usec): min=544, max=323809, avg=136027.03, stdev=130425.00 lat (usec): min=545, max=323810, avg=136028.29, stdev=130425.14 clat percentiles (usec): | 1.00th=[ 545], 5.00th=[ 545], 10.00th=[ 545], 20.00th=[ 545], | 30.00th=[ 28443], 40.00th=[ 28443], 50.00th=[137364], 60.00th=[137364], | 70.00th=[189793], 80.00th=[189793], 90.00th=[325059], 95.00th=[325059], | 99.00th=[325059], 99.50th=[325059], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1134KiB/s (1161kB/s)(7168KiB/6321msec); 0 zone resets clat (msec): min=182, max=3020, avg=771.58, stdev=1023.12 lat (msec): min=182, max=3020, avg=775.10, stdev=1021.73 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 182], 10.00th=[ 182], 20.00th=[ 218], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 405], 60.00th=[ 414], | 70.00th=[ 414], 80.00th=[ 927], 90.00th=[ 3037], 95.00th=[ 3037], | 99.00th=[ 3037], 99.50th=[ 3037], 99.90th=[ 3037], 99.95th=[ 3037], | 99.99th=[ 3037] bw ( KiB/s): min= 2003, max= 2043, per=49.94%, avg=2024.60, stdev=18.46, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 750=8.33% lat (msec) : 50=8.33%, 250=41.67%, 500=25.00%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.02%, ctx=167, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=2896KiB/s (2965kB/s), 303KiB/s-1347KiB/s (310kB/s-1379kB/s), io=20.0MiB (20.0MB), run=5321-7072msec WRITE: bw=4054KiB/s (4152kB/s), 869KiB/s-1516KiB/s (890kB/s-1552kB/s), io=28.0MiB (29.4MB), run=5321-7072msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179727: Sat Aug 22 06:00:06 2026 read: IOPS=1, BW=1175KiB/s (1203kB/s)(7168KiB/6101msec) clat (msec): min=88, max=208, avg=137.26, stdev=38.63 lat (msec): min=88, max=208, avg=137.26, stdev=38.63 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 89], 10.00th=[ 89], 20.00th=[ 106], | 30.00th=[ 126], 40.00th=[ 126], 50.00th=[ 134], 60.00th=[ 148], | 70.00th=[ 148], 80.00th=[ 153], 90.00th=[ 209], 95.00th=[ 209], | 99.00th=[ 209], 99.50th=[ 209], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 1822, max= 4047, per=100.00%, avg=2883.25, stdev=1158.68, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=839KiB/s (859kB/s)(5120KiB/6101msec); 0 zone resets clat (msec): min=326, max=2867, avg=983.28, stdev=1061.23 lat (msec): min=326, max=2868, avg=983.52, stdev=1061.38 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 326], 10.00th=[ 326], 20.00th=[ 326], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 535], 60.00th=[ 535], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 1946, max= 2048, per=49.71%, avg=1983.00, stdev=46.32, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=50.00%, 500=8.33%, 750=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=4.87%, ctx=148, 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=179728: Sat Aug 22 06:00:06 2026 read: IOPS=0, BW=295KiB/s (302kB/s)(2048KiB/6938msec) clat (msec): min=122, max=2783, avg=1452.78, stdev=1881.87 lat (msec): min=122, max=2783, avg=1452.78, stdev=1881.87 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 123], 60.00th=[ 2769], | 70.00th=[ 2769], 80.00th=[ 2769], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 2019, max= 2043, per=71.29%, avg=2031.00, stdev=16.97, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1476KiB/s (1511kB/s)(10.0MiB/6938msec); 0 zone resets clat (msec): min=91, max=774, avg=383.41, stdev=245.34 lat (msec): min=91, max=774, avg=383.49, stdev=245.34 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 92], 10.00th=[ 92], 20.00th=[ 153], | 30.00th=[ 169], 40.00th=[ 211], 50.00th=[ 213], 60.00th=[ 464], | 70.00th=[ 493], 80.00th=[ 609], 90.00th=[ 659], 95.00th=[ 776], | 99.00th=[ 776], 99.50th=[ 776], 99.90th=[ 776], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 1855, max= 4096, per=66.73%, avg=2661.83, stdev=1090.67, samples=6 iops : min= 1, max= 4, avg= 1.83, stdev= 1.33, samples=6 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=16.67%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=5.03%, ctx=152, 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=179729: Sat Aug 22 06:00:06 2026 read: IOPS=0, BW=874KiB/s (895kB/s)(6144KiB/7033msec) clat (msec): min=108, max=483, avg=300.13, stdev=140.44 lat (msec): min=108, max=483, avg=300.13, stdev=140.45 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 159], | 30.00th=[ 159], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 342], | 70.00th=[ 372], 80.00th=[ 372], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 1855, max= 3908, per=85.91%, avg=2447.50, stdev=976.83, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=874KiB/s (895kB/s)(6144KiB/7033msec); 0 zone resets clat (msec): min=148, max=2987, avg=862.72, stdev=1071.58 lat (msec): min=148, max=2987, avg=862.80, stdev=1071.57 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 550], | 70.00th=[ 860], 80.00th=[ 860], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 1486, max= 2048, per=47.39%, avg=1890.20, stdev=239.51, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.62%, ctx=72, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179730: Sat Aug 22 06:00:06 2026 read: IOPS=0, BW=712KiB/s (729kB/s)(5120KiB/7187msec) clat (msec): min=52, max=703, avg=266.03, stdev=252.98 lat (msec): min=52, max=703, avg=266.03, stdev=252.98 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 53], 10.00th=[ 53], 20.00th=[ 53], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 197], 60.00th=[ 197], | 70.00th=[ 224], 80.00th=[ 224], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1954, max= 4096, per=94.41%, avg=2689.67, stdev=1218.35, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=0, BW=997KiB/s (1021kB/s)(7168KiB/7187msec); 0 zone resets clat (msec): min=92, max=2954, avg=808.05, stdev=992.28 lat (msec): min=92, max=2954, avg=808.37, stdev=992.25 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 107], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 726], 60.00th=[ 751], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 2970], 95.00th=[ 2970], | 99.00th=[ 2970], 99.50th=[ 2970], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 2970] bw ( KiB/s): min= 1984, max= 3710, per=61.29%, avg=2445.00, stdev=843.79, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=33.33%, 500=8.33%, 750=16.67%, 1000=16.67% lat (msec) : >=2000=8.33% cpu : usr=0.01%, sys=2.18%, ctx=70, 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=2850KiB/s (2918kB/s), 295KiB/s-1175KiB/s (302kB/s-1203kB/s), io=20.0MiB (20.0MB), run=6101-7187msec WRITE: bw=3989KiB/s (4085kB/s), 839KiB/s-1476KiB/s (859kB/s-1511kB/s), io=28.0MiB (29.4MB), run=6101-7187msec 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=179742: Sat Aug 22 06:00:19 2026 read: IOPS=1, BW=5980KiB/s (6123kB/s)(12.0MiB/2055msec) clat (msec): min=624, max=722, avg=668.50, stdev=49.71 lat (msec): min=624, max=722, avg=668.51, stdev=49.71 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 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) : 750=100.00% cpu : usr=0.00%, sys=18.74%, ctx=329, 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=179743: Sat Aug 22 06:00:19 2026 read: IOPS=0, BW=1719KiB/s (1760kB/s)(4096KiB/2383msec) clat (nsec): min=617757k, max=617757k, avg=617757458.00, stdev= 0.00 lat (nsec): min=617760k, max=617760k, avg=617760163.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] 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=3438KiB/s (3520kB/s)(8192KiB/2383msec); 0 zone resets clat (msec): min=830, max=888, avg=859.56, stdev=40.82 lat (msec): min=831, max=889, avg=860.15, stdev=40.98 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 885], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 885], 95.00th=[ 885], | 99.00th=[ 885], 99.50th=[ 885], 99.90th=[ 885], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7876, max= 7876, per=71.80%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=7.30%, ctx=108, 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=179744: Sat Aug 22 06:00:19 2026 write: IOPS=1, BW=4114KiB/s (4213kB/s)(12.0MiB/2987msec); 0 zone resets clat (msec): min=243, max=1715, avg=987.18, stdev=736.07 lat (msec): min=244, max=1716, avg=987.60, stdev=736.21 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 245], 10.00th=[ 245], 20.00th=[ 245], | 30.00th=[ 245], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1720], 80.00th=[ 1720], 90.00th=[ 1720], 95.00th=[ 1720], | 99.00th=[ 1720], 99.50th=[ 1720], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 7876, max= 7876, per=71.80%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.03%, sys=6.03%, ctx=46, 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=179746: Sat Aug 22 06:00:19 2026 write: IOPS=1, BW=6260KiB/s (6410kB/s)(12.0MiB/1963msec); 0 zone resets clat (msec): min=547, max=695, avg=644.45, stdev=84.40 lat (msec): min=547, max=696, avg=644.73, stdev=84.51 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 5550, max= 7937, per=61.47%, avg=6743.50, stdev=1687.86, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=9.43%, ctx=93, 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=6875KiB/s (7040kB/s), 1719KiB/s-5980KiB/s (1760kB/s-6123kB/s), io=16.0MiB (16.8MB), run=2055-2383msec WRITE: bw=10.7MiB/s (11.2MB/s), 3438KiB/s-6260KiB/s (3520kB/s-6410kB/s), io=32.0MiB (33.6MB), run=1963-2987msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179745: Sat Aug 22 06:00:19 2026 read: IOPS=1, BW=5185KiB/s (5309kB/s)(12.0MiB/2370msec) clat (msec): min=352, max=1122, avg=745.71, stdev=385.19 lat (msec): min=352, max=1122, avg=745.71, stdev=385.19 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 1116], 80.00th=[ 1116], 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= 7953, max= 8175, per=100.00%, avg=8064.00, stdev=156.98, 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=4.90%, ctx=52, 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=179747: Sat Aug 22 06:00:19 2026 read: IOPS=0, BW=1396KiB/s (1430kB/s)(4096KiB/2934msec) clat (nsec): min=956525k, max=956525k, avg=956524618.00, stdev= 0.00 lat (nsec): min=956528k, max=956528k, avg=956527603.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 961], 5.00th=[ 961], 10.00th=[ 961], 20.00th=[ 961], | 30.00th=[ 961], 40.00th=[ 961], 50.00th=[ 961], 60.00th=[ 961], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] 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=2792KiB/s (2859kB/s)(8192KiB/2934msec); 0 zone resets clat (msec): min=813, max=1132, avg=972.89, stdev=225.46 lat (msec): min=814, max=1132, avg=973.73, stdev=224.56 clat percentiles (msec): | 1.00th=[ 810], 5.00th=[ 810], 10.00th=[ 810], 20.00th=[ 810], | 30.00th=[ 810], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 1133], | 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= 8110, max= 8110, per=72.62%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=6.96%, ctx=55, 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=179748: Sat Aug 22 06:00:19 2026 write: IOPS=1, BW=4563KiB/s (4672kB/s)(12.0MiB/2693msec); 0 zone resets clat (msec): min=195, max=1397, avg=837.65, stdev=604.99 lat (msec): min=196, max=1397, avg=837.98, stdev=605.03 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 197], 10.00th=[ 197], 20.00th=[ 197], | 30.00th=[ 197], 40.00th=[ 919], 50.00th=[ 919], 60.00th=[ 919], | 70.00th=[ 1401], 80.00th=[ 1401], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 8143, max= 8143, per=72.91%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.22%, ctx=66, 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=179749: Sat Aug 22 06:00:19 2026 write: IOPS=1, BW=5899KiB/s (6041kB/s)(12.0MiB/2083msec); 0 zone resets clat (msec): min=444, max=981, avg=639.78, stdev=297.26 lat (msec): min=445, max=982, avg=640.34, stdev=296.93 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 447], 10.00th=[ 447], 20.00th=[ 447], | 30.00th=[ 447], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 493], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 986], 95.00th=[ 986], | 99.00th=[ 986], 99.50th=[ 986], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 8143, max= 8175, per=73.06%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=7.88%, ctx=84, 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=5584KiB/s (5718kB/s), 1396KiB/s-5185KiB/s (1430kB/s-5309kB/s), io=16.0MiB (16.8MB), run=2370-2934msec WRITE: bw=10.9MiB/s (11.4MB/s), 2792KiB/s-5899KiB/s (2859kB/s-6041kB/s), io=32.0MiB (33.6MB), run=2083-2934msec