== sanity test 398b: DIO and buffer IO race ============== 12:30:34 (1787848234) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.29962 s, 9.5 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=146152: Thu Aug 27 12:32:42 2026 read: IOPS=13, BW=54.4KiB/s (55.7kB/s)(5992KiB/110245msec) clat (usec): min=34, max=533574, avg=35739.90, stdev=30353.30 lat (usec): min=35, max=533576, avg=35744.07, stdev=30354.92 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 56], 10.00th=[ 510], 20.00th=[ 16581], | 30.00th=[ 20579], 40.00th=[ 25035], 50.00th=[ 29492], 60.00th=[ 35914], | 70.00th=[ 41681], 80.00th=[ 53216], 90.00th=[ 68682], 95.00th=[ 86508], | 99.00th=[135267], 99.50th=[179307], 99.90th=[223347], 99.95th=[534774], | 99.99th=[534774] bw ( KiB/s): min= 7, max= 119, per=25.12%, avg=54.00, stdev=23.13, samples=217 iops : min= 1, max= 29, avg=12.84, stdev= 5.81, samples=217 write: IOPS=14, BW=57.1KiB/s (58.5kB/s)(6296KiB/110245msec); 0 zone resets clat (usec): min=919, max=324437, avg=35838.07, stdev=37741.33 lat (usec): min=920, max=324439, avg=35844.81, stdev=37744.39 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1188], 10.00th=[ 1680], 20.00th=[ 3851], | 30.00th=[ 8029], 40.00th=[ 16712], 50.00th=[ 26084], 60.00th=[ 35914], | 70.00th=[ 47449], 80.00th=[ 60031], 90.00th=[ 82314], 95.00th=[106431], | 99.00th=[173016], 99.50th=[202376], 99.90th=[291505], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 7, max= 143, per=25.23%, avg=57.03, stdev=22.34, samples=216 iops : min= 1, max= 35, avg=13.60, stdev= 5.63, samples=216 lat (usec) : 50=0.88%, 100=3.45%, 250=0.39%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.39% lat (msec) : 2=5.96%, 4=4.33%, 10=6.58%, 20=14.06%, 50=39.23% lat (msec) : 100=20.31%, 250=4.07%, 500=0.16%, 750=0.03% cpu : usr=0.08%, sys=6.06%, ctx=6668, 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=146153: Thu Aug 27 12:32:42 2026 read: IOPS=13, BW=54.6KiB/s (55.0kB/s)(5940KiB/108706msec) clat (usec): min=37, max=256839, avg=34456.14, stdev=25898.21 lat (usec): min=37, max=256840, avg=34459.80, stdev=25898.45 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 58], 10.00th=[ 4359], 20.00th=[ 16057], | 30.00th=[ 20055], 40.00th=[ 24511], 50.00th=[ 28967], 60.00th=[ 34341], | 70.00th=[ 42206], 80.00th=[ 51119], 90.00th=[ 66323], 95.00th=[ 80217], | 99.00th=[116917], 99.50th=[137364], 99.90th=[219153], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 7, max= 119, per=25.38%, avg=54.56, stdev=23.03, samples=213 iops : min= 1, max= 29, avg=12.98, stdev= 5.79, samples=213 write: IOPS=14, BW=58.4KiB/s (59.8kB/s)(6348KiB/108706msec); 0 zone resets clat (usec): min=995, max=527279, avg=36074.19, stdev=40641.83 lat (usec): min=996, max=527280, avg=36078.17, stdev=40641.58 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1254], 10.00th=[ 1729], 20.00th=[ 3851], | 30.00th=[ 7898], 40.00th=[ 16319], 50.00th=[ 26084], 60.00th=[ 35390], | 70.00th=[ 45876], 80.00th=[ 61604], 90.00th=[ 83362], 95.00th=[110625], | 99.00th=[158335], 99.50th=[193987], 99.90th=[438305], 99.95th=[526386], | 99.99th=[526386] bw ( KiB/s): min= 7, max= 128, per=25.71%, avg=58.10, stdev=22.83, samples=214 iops : min= 1, max= 32, avg=13.86, stdev= 5.74, samples=214 lat (usec) : 50=0.65%, 100=3.52%, 250=0.46%, 500=0.03%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=6.12%, 4=4.56%, 10=7.36%, 20=14.19%, 50=38.90% lat (msec) : 100=19.76%, 250=4.13%, 500=0.20%, 750=0.03% cpu : usr=0.09%, sys=5.97%, ctx=6467, 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=146154: Thu Aug 27 12:32:42 2026 read: IOPS=13, BW=54.0KiB/s (56.3kB/s)(6028KiB/109644msec) clat (usec): min=33, max=335460, avg=35290.65, stdev=29635.28 lat (usec): min=33, max=335461, avg=35292.10, stdev=29635.26 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 57], 10.00th=[ 110], 20.00th=[ 15926], | 30.00th=[ 20055], 40.00th=[ 23987], 50.00th=[ 28967], 60.00th=[ 35390], | 70.00th=[ 41681], 80.00th=[ 51643], 90.00th=[ 69731], 95.00th=[ 82314], | 99.00th=[143655], 99.50th=[193987], 99.90th=[267387], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 7, max= 126, per=25.69%, avg=55.24, stdev=22.54, samples=214 iops : min= 1, max= 31, avg=13.14, stdev= 5.69, samples=214 write: IOPS=14, BW=57.1KiB/s (58.5kB/s)(6260KiB/109644msec); 0 zone resets clat (usec): min=848, max=1005.0k, avg=35888.07, stdev=44299.55 lat (usec): min=849, max=1005.0k, avg=35891.59, stdev=44300.56 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1221], 10.00th=[ 1680], | 20.00th=[ 3556], 30.00th=[ 7439], 40.00th=[ 17433], | 50.00th=[ 26608], 60.00th=[ 34341], 70.00th=[ 44827], | 80.00th=[ 61080], 90.00th=[ 81265], 95.00th=[ 105382], | 99.00th=[ 158335], 99.50th=[ 183501], 99.90th=[ 375391], | 99.95th=[1002439], 99.99th=[1002439] bw ( KiB/s): min= 7, max= 136, per=25.26%, avg=57.09, stdev=23.65, samples=215 iops : min= 1, max= 34, avg=13.61, stdev= 5.97, samples=215 lat (usec) : 50=0.81%, 100=4.04%, 250=0.23%, 500=0.16%, 750=0.03% lat (usec) : 1000=0.23% lat (msec) : 2=5.86%, 4=4.95%, 10=6.48%, 20=13.77%, 50=39.75% lat (msec) : 100=19.21%, 250=4.33%, 500=0.13%, 2000=0.03% cpu : usr=0.06%, sys=5.92%, ctx=6607, 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=146155: Thu Aug 27 12:32:42 2026 read: IOPS=13, BW=54.4KiB/s (55.7kB/s)(6052KiB/111216msec) clat (usec): min=32, max=246624, avg=34283.61, stdev=28210.11 lat (usec): min=32, max=246626, avg=34286.01, stdev=28210.23 clat percentiles (usec): | 1.00th=[ 46], 5.00th=[ 57], 10.00th=[ 281], 20.00th=[ 15401], | 30.00th=[ 19530], 40.00th=[ 23462], 50.00th=[ 27657], 60.00th=[ 32900], | 70.00th=[ 41681], 80.00th=[ 50594], 90.00th=[ 65274], 95.00th=[ 82314], | 99.00th=[141558], 99.50th=[187696], 99.90th=[242222], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 7, max= 134, per=25.65%, avg=55.14, stdev=21.27, samples=215 iops : min= 1, max= 33, avg=13.13, stdev= 5.38, samples=215 write: IOPS=14, BW=56.1KiB/s (57.4kB/s)(6236KiB/111216msec); 0 zone resets clat (usec): min=923, max=938370, avg=37868.05, stdev=47043.85 lat (usec): min=925, max=938373, avg=37869.98, stdev=47043.85 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1221], 10.00th=[ 1811], 20.00th=[ 4293], | 30.00th=[ 8848], 40.00th=[ 18220], 50.00th=[ 27657], 60.00th=[ 38011], | 70.00th=[ 49021], 80.00th=[ 63701], 90.00th=[ 84411], 95.00th=[104334], | 99.00th=[173016], 99.50th=[193987], 99.90th=[683672], 99.95th=[935330], | 99.99th=[935330] bw ( KiB/s): min= 7, max= 143, per=24.77%, avg=55.98, stdev=23.51, samples=218 iops : min= 1, max= 35, avg=13.34, stdev= 5.92, samples=218 lat (usec) : 50=0.98%, 100=3.52%, 250=0.42%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.16% lat (msec) : 2=5.40%, 4=4.17%, 10=7.55%, 20=14.62%, 50=37.92% lat (msec) : 100=20.90%, 250=4.10%, 500=0.10%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=6.05%, ctx=6639, 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=216KiB/s (221kB/s), 54.4KiB/s-54.0KiB/s (55.7kB/s-56.3kB/s), io=23.4MiB (24.6MB), run=108706-111216msec WRITE: bw=226KiB/s (231kB/s), 56.1KiB/s-58.4KiB/s (57.4kB/s-59.8kB/s), io=24.6MiB (25.7MB), run=108706-111216msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146147: Thu Aug 27 12:34:54 2026 read: IOPS=6, BW=24.7KiB/s (25.3kB/s)(5992KiB/242667msec) clat (msec): min=5, max=730, avg=34.56, stdev=36.35 lat (msec): min=5, max=730, avg=34.56, stdev=36.35 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 46], 90.00th=[ 66], 95.00th=[ 90], | 99.00th=[ 146], 99.50th=[ 182], 99.90th=[ 550], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 80, per=27.65%, avg=27.09, stdev=17.01, samples=430 iops : min= 1, max= 20, avg= 6.19, stdev= 4.30, samples=430 write: IOPS=6, BW=25.9KiB/s (26.6kB/s)(6296KiB/242667msec); 0 zone resets clat (msec): min=30, max=612, avg=121.06, stdev=58.95 lat (msec): min=30, max=612, avg=121.06, stdev=58.95 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 77], | 30.00th=[ 87], 40.00th=[ 96], 50.00th=[ 108], 60.00th=[ 120], | 70.00th=[ 133], 80.00th=[ 157], 90.00th=[ 197], 95.00th=[ 239], | 99.00th=[ 326], 99.50th=[ 384], 99.90th=[ 456], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 7, max= 56, per=25.01%, avg=25.76, stdev=10.63, samples=474 iops : min= 1, max= 14, avg= 5.86, stdev= 2.73, samples=474 lat (msec) : 10=3.16%, 20=13.74%, 50=24.67%, 100=27.64%, 250=28.42% lat (msec) : 500=2.28%, 750=0.10% cpu : usr=0.04%, sys=1.33%, ctx=5505, 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=146149: Thu Aug 27 12:34:54 2026 read: IOPS=6, BW=24.4KiB/s (24.0kB/s)(5940KiB/243308msec) clat (msec): min=5, max=876, avg=34.75, stdev=41.57 lat (msec): min=5, max=876, avg=34.75, stdev=41.57 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 22], 50.00th=[ 26], 60.00th=[ 30], | 70.00th=[ 36], 80.00th=[ 44], 90.00th=[ 66], 95.00th=[ 93], | 99.00th=[ 167], 99.50th=[ 226], 99.90th=[ 498], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 94, per=27.53%, avg=26.98, stdev=17.15, samples=427 iops : min= 1, max= 23, avg= 6.16, stdev= 4.32, samples=427 write: IOPS=6, BW=26.1KiB/s (26.7kB/s)(6348KiB/243308msec); 0 zone resets clat (msec): min=38, max=501, avg=120.57, stdev=55.74 lat (msec): min=38, max=501, avg=120.57, stdev=55.74 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 78], | 30.00th=[ 87], 40.00th=[ 97], 50.00th=[ 108], 60.00th=[ 121], | 70.00th=[ 134], 80.00th=[ 157], 90.00th=[ 192], 95.00th=[ 226], | 99.00th=[ 317], 99.50th=[ 347], 99.90th=[ 430], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 7, max= 56, per=25.03%, avg=25.78, stdev=10.70, samples=477 iops : min= 1, max= 14, avg= 5.86, stdev= 2.76, samples=477 lat (msec) : 10=2.99%, 20=14.81%, 50=23.96%, 100=26.40%, 250=29.95% lat (msec) : 500=1.82%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.31%, ctx=5503, 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=146150: Thu Aug 27 12:34:54 2026 read: IOPS=6, BW=24.8KiB/s (25.4kB/s)(6028KiB/242663msec) clat (msec): min=4, max=731, avg=34.69, stdev=36.71 lat (msec): min=4, max=731, avg=34.70, stdev=36.71 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 36], 80.00th=[ 45], 90.00th=[ 65], 95.00th=[ 89], | 99.00th=[ 155], 99.50th=[ 201], 99.90th=[ 439], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 120, per=26.97%, avg=26.43, stdev=17.14, samples=443 iops : min= 1, max= 30, avg= 6.03, stdev= 4.33, samples=443 write: IOPS=6, BW=25.8KiB/s (26.4kB/s)(6260KiB/242663msec); 0 zone resets clat (msec): min=35, max=989, avg=121.42, stdev=60.38 lat (msec): min=35, max=989, avg=121.42, stdev=60.38 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 79], | 30.00th=[ 88], 40.00th=[ 96], 50.00th=[ 107], 60.00th=[ 120], | 70.00th=[ 136], 80.00th=[ 157], 90.00th=[ 192], 95.00th=[ 232], | 99.00th=[ 330], 99.50th=[ 359], 99.90th=[ 468], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 56, per=24.65%, avg=25.39, stdev=11.09, samples=478 iops : min= 1, max= 14, avg= 5.77, stdev= 2.85, samples=478 lat (msec) : 10=3.81%, 20=13.09%, 50=25.00%, 100=27.73%, 250=28.29% lat (msec) : 500=2.02%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.26%, ctx=5562, 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=146151: Thu Aug 27 12:34:54 2026 read: IOPS=6, BW=25.3KiB/s (25.9kB/s)(6052KiB/239549msec) clat (msec): min=5, max=470, avg=34.01, stdev=32.27 lat (msec): min=5, max=470, avg=34.01, stdev=32.27 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 15], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 37], 80.00th=[ 46], 90.00th=[ 65], 95.00th=[ 87], | 99.00th=[ 146], 99.50th=[ 220], 99.90th=[ 439], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 7, max= 103, per=27.63%, avg=27.08, stdev=18.06, samples=433 iops : min= 1, max= 25, avg= 6.18, stdev= 4.56, samples=433 write: IOPS=6, BW=26.0KiB/s (26.7kB/s)(6236KiB/239549msec); 0 zone resets clat (msec): min=30, max=932, avg=120.42, stdev=59.46 lat (msec): min=30, max=932, avg=120.42, stdev=59.46 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 58], 10.00th=[ 66], 20.00th=[ 78], | 30.00th=[ 88], 40.00th=[ 96], 50.00th=[ 108], 60.00th=[ 120], | 70.00th=[ 134], 80.00th=[ 157], 90.00th=[ 192], 95.00th=[ 226], | 99.00th=[ 309], 99.50th=[ 351], 99.90th=[ 684], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 63, per=24.91%, avg=25.66, stdev=10.80, samples=470 iops : min= 1, max= 15, avg= 5.83, stdev= 2.76, samples=470 lat (msec) : 10=3.78%, 20=13.28%, 50=25.59%, 100=27.31%, 250=28.26% lat (msec) : 500=1.73%, 750=0.03%, 1000=0.03% cpu : usr=0.04%, sys=1.32%, ctx=5562, 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=98.7KiB/s (101kB/s), 24.4KiB/s-25.3KiB/s (24.0kB/s-25.9kB/s), io=23.4MiB (24.6MB), run=239549-243308msec WRITE: bw=103KiB/s (106kB/s), 25.8KiB/s-26.1KiB/s (26.4kB/s-26.7kB/s), io=24.6MiB (25.7MB), run=239549-243308msec 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=146208: Thu Aug 27 12:35:25 2026 read: IOPS=16, BW=267KiB/s (273kB/s)(5920KiB/22168msec) clat (usec): min=34, max=186892, avg=30170.81, stdev=27533.25 lat (usec): min=35, max=186892, avg=30172.05, stdev=27533.27 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 51], 10.00th=[ 59], 20.00th=[ 82], | 30.00th=[ 17171], 40.00th=[ 22676], 50.00th=[ 27657], 60.00th=[ 33162], | 70.00th=[ 38536], 80.00th=[ 47449], 90.00th=[ 61604], 95.00th=[ 77071], | 99.00th=[119014], 99.50th=[170918], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 94, max= 509, per=25.60%, avg=264.74, stdev=91.83, samples=43 iops : min= 5, max= 31, avg=15.79, stdev= 5.82, samples=43 write: IOPS=17, BW=287KiB/s (294kB/s)(6368KiB/22168msec); 0 zone resets clat (usec): min=1421, max=188629, avg=27030.89, stdev=28419.37 lat (usec): min=1423, max=188631, avg=27032.96, stdev=28419.57 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1811], 10.00th=[ 2606], 20.00th=[ 4228], | 30.00th=[ 6063], 40.00th=[ 9372], 50.00th=[ 17433], 60.00th=[ 26608], | 70.00th=[ 35914], 80.00th=[ 49546], 90.00th=[ 62129], 95.00th=[ 83362], | 99.00th=[115868], 99.50th=[183501], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 88, max= 540, per=26.46%, avg=287.88, stdev=95.38, samples=43 iops : min= 5, max= 33, avg=17.26, stdev= 5.99, samples=43 lat (usec) : 50=2.21%, 100=8.33%, 250=1.43%, 500=0.39%, 750=0.13% lat (msec) : 2=3.78%, 4=6.51%, 10=11.20%, 20=10.03%, 50=37.50% lat (msec) : 100=16.15%, 250=2.34% cpu : usr=0.08%, sys=7.31%, ctx=1462, 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=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=146210: Thu Aug 27 12:35:25 2026 read: IOPS=15, BW=248KiB/s (254kB/s)(5744KiB/23157msec) clat (usec): min=36, max=159218, avg=29831.62, stdev=24833.62 lat (usec): min=36, max=159220, avg=29832.83, stdev=24833.69 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 53], 10.00th=[ 60], 20.00th=[ 81], | 30.00th=[ 17171], 40.00th=[ 23725], 50.00th=[ 27395], 60.00th=[ 32900], | 70.00th=[ 40633], 80.00th=[ 47973], 90.00th=[ 62129], 95.00th=[ 70779], | 99.00th=[104334], 99.50th=[133694], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 43, max= 480, per=24.49%, avg=253.18, stdev=114.98, samples=44 iops : min= 2, max= 30, avg=15.07, stdev= 7.28, samples=44 write: IOPS=17, BW=283KiB/s (289kB/s)(6544KiB/23157msec); 0 zone resets clat (usec): min=1328, max=285043, avg=29932.65, stdev=35679.42 lat (usec): min=1330, max=285044, avg=29957.61, stdev=35670.39 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1827], 10.00th=[ 2409], 20.00th=[ 4621], | 30.00th=[ 6652], 40.00th=[ 9241], 50.00th=[ 15270], 60.00th=[ 26608], | 70.00th=[ 36439], 80.00th=[ 53216], 90.00th=[ 74974], 95.00th=[ 99091], | 99.00th=[164627], 99.50th=[210764], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 63, max= 508, per=25.93%, avg=282.11, stdev=105.43, samples=45 iops : min= 3, max= 31, avg=16.89, stdev= 6.69, samples=45 lat (usec) : 50=1.43%, 100=8.59%, 250=0.78%, 500=0.26% lat (msec) : 2=4.04%, 4=5.60%, 10=13.41%, 20=11.46%, 50=34.77% lat (msec) : 100=16.67%, 250=2.86%, 500=0.13% cpu : usr=0.09%, sys=7.11%, ctx=1470, 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=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=146211: Thu Aug 27 12:35:25 2026 read: IOPS=16, BW=272KiB/s (278kB/s)(6256KiB/23020msec) clat (usec): min=25, max=316653, avg=30849.10, stdev=28824.58 lat (usec): min=25, max=316654, avg=30851.18, stdev=28824.44 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 86], | 30.00th=[ 17695], 40.00th=[ 23200], 50.00th=[ 28705], 60.00th=[ 33817], | 70.00th=[ 40633], 80.00th=[ 49021], 90.00th=[ 62653], 95.00th=[ 74974], | 99.00th=[113771], 99.50th=[139461], 99.90th=[316670], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 95, max= 477, per=26.37%, avg=272.64, stdev=91.89, samples=45 iops : min= 5, max= 29, avg=16.31, stdev= 5.80, samples=45 write: IOPS=16, BW=262KiB/s (268kB/s)(6032KiB/23020msec); 0 zone resets clat (usec): min=1486, max=254274, avg=28848.01, stdev=30104.41 lat (usec): min=1489, max=254275, avg=28850.13, stdev=30104.25 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1909], 10.00th=[ 3261], 20.00th=[ 5538], | 30.00th=[ 8029], 40.00th=[ 13960], 50.00th=[ 19792], 60.00th=[ 26870], | 70.00th=[ 36439], 80.00th=[ 48497], 90.00th=[ 67634], 95.00th=[ 80217], | 99.00th=[147850], 99.50th=[204473], 99.90th=[254804], 99.95th=[254804], | 99.99th=[254804] bw ( KiB/s): min= 94, max= 472, per=23.88%, avg=259.84, stdev=97.37, samples=45 iops : min= 5, max= 29, avg=15.49, stdev= 6.18, samples=45 lat (usec) : 50=1.17%, 100=9.51%, 250=0.91%, 500=0.39%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=2.99%, 4=4.30%, 10=9.90%, 20=12.11%, 50=39.71% lat (msec) : 100=17.06%, 250=1.30%, 500=0.26% cpu : usr=0.08%, sys=7.22%, ctx=1536, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146212: Thu Aug 27 12:35:25 2026 read: IOPS=16, BW=271KiB/s (278kB/s)(6032KiB/22254msec) clat (usec): min=37, max=145222, avg=29829.25, stdev=26122.63 lat (usec): min=37, max=145223, avg=29831.00, stdev=26122.58 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 53], 10.00th=[ 60], 20.00th=[ 78], | 30.00th=[ 15008], 40.00th=[ 22938], 50.00th=[ 27395], 60.00th=[ 34341], | 70.00th=[ 40633], 80.00th=[ 48497], 90.00th=[ 63177], 95.00th=[ 72877], | 99.00th=[123208], 99.50th=[137364], 99.90th=[145753], 99.95th=[145753], | 99.99th=[145753] bw ( KiB/s): min= 63, max= 446, per=26.62%, avg=275.29, stdev=82.34, samples=42 iops : min= 3, max= 27, avg=16.45, stdev= 5.13, samples=42 write: IOPS=17, BW=281KiB/s (288kB/s)(6256KiB/22254msec); 0 zone resets clat (usec): min=1351, max=204528, avg=27555.02, stdev=29595.59 lat (usec): min=1353, max=204530, avg=27560.39, stdev=29593.19 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1795], 10.00th=[ 2671], 20.00th=[ 4228], | 30.00th=[ 6456], 40.00th=[ 10421], 50.00th=[ 16909], 60.00th=[ 25035], | 70.00th=[ 36439], 80.00th=[ 50594], 90.00th=[ 64750], 95.00th=[ 81265], | 99.00th=[147850], 99.50th=[181404], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 87, max= 507, per=25.72%, avg=279.86, stdev=95.94, samples=43 iops : min= 5, max= 31, avg=16.74, stdev= 6.05, samples=43 lat (usec) : 50=1.30%, 100=10.03%, 250=0.91%, 500=0.39%, 1000=0.13% lat (msec) : 2=3.52%, 4=6.64%, 10=10.68%, 20=10.94%, 50=35.94% lat (msec) : 100=17.32%, 250=2.21% cpu : usr=0.10%, sys=7.43%, ctx=1442, 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=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=1034KiB/s (1059kB/s), 248KiB/s-272KiB/s (254kB/s-278kB/s), io=23.4MiB (24.5MB), run=22168-23157msec WRITE: bw=1088KiB/s (1114kB/s), 262KiB/s-287KiB/s (268kB/s-294kB/s), io=24.6MiB (25.8MB), run=22168-23157msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146205: Thu Aug 27 12:35:58 2026 read: IOPS=6, BW=106KiB/s (109kB/s)(5920KiB/55826msec) clat (msec): min=6, max=263, avg=32.88, stdev=32.39 lat (msec): min=6, max=263, avg=32.88, stdev=32.39 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 33], 80.00th=[ 44], 90.00th=[ 70], 95.00th=[ 94], | 99.00th=[ 155], 99.50th=[ 236], 99.90th=[ 264], 99.95th=[ 264], | 99.99th=[ 264] bw ( KiB/s): min= 31, max= 348, per=26.09%, avg=111.65, stdev=63.51, samples=103 iops : min= 1, max= 21, avg= 6.31, stdev= 4.00, samples=103 write: IOPS=7, BW=114KiB/s (117kB/s)(6368KiB/55826msec); 0 zone resets clat (msec): min=41, max=295, avg=109.36, stdev=43.65 lat (msec): min=41, max=295, avg=109.37, stdev=43.65 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 60], 10.00th=[ 65], 20.00th=[ 77], | 30.00th=[ 84], 40.00th=[ 91], 50.00th=[ 101], 60.00th=[ 109], | 70.00th=[ 121], 80.00th=[ 138], 90.00th=[ 165], 95.00th=[ 209], | 99.00th=[ 253], 99.50th=[ 279], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 31, max= 223, per=25.12%, avg=113.27, stdev=45.66, samples=110 iops : min= 1, max= 13, avg= 6.39, stdev= 2.93, samples=110 lat (msec) : 10=2.99%, 20=19.14%, 50=18.75%, 100=31.12%, 250=27.08% lat (msec) : 500=0.91% cpu : usr=0.04%, sys=1.45%, ctx=1331, 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=146206: Thu Aug 27 12:35:58 2026 read: IOPS=6, BW=103KiB/s (105kB/s)(5744KiB/55858msec) clat (msec): min=5, max=348, avg=30.15, stdev=33.95 lat (msec): min=5, max=348, avg=30.16, stdev=33.95 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 37], 90.00th=[ 61], 95.00th=[ 83], | 99.00th=[ 180], 99.50th=[ 232], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 31, max= 317, per=27.31%, avg=116.91, stdev=71.84, samples=96 iops : min= 1, max= 19, avg= 6.65, stdev= 4.58, samples=96 write: IOPS=7, BW=117KiB/s (120kB/s)(6544KiB/55858msec); 0 zone resets clat (msec): min=34, max=328, avg=110.01, stdev=46.21 lat (msec): min=34, max=328, avg=110.01, stdev=46.21 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 59], 10.00th=[ 65], 20.00th=[ 74], | 30.00th=[ 82], 40.00th=[ 89], 50.00th=[ 97], 60.00th=[ 111], | 70.00th=[ 122], 80.00th=[ 142], 90.00th=[ 169], 95.00th=[ 207], | 99.00th=[ 259], 99.50th=[ 284], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 31, max= 222, per=25.75%, avg=116.15, stdev=45.20, samples=110 iops : min= 1, max= 13, avg= 6.57, stdev= 2.87, samples=110 lat (msec) : 10=4.30%, 20=19.79%, 50=16.41%, 100=31.90%, 250=26.69% lat (msec) : 500=0.91% cpu : usr=0.04%, sys=1.48%, ctx=1365, 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=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=146207: Thu Aug 27 12:35:58 2026 read: IOPS=7, BW=116KiB/s (119kB/s)(6256KiB/53915msec) clat (msec): min=6, max=359, avg=29.23, stdev=29.33 lat (msec): min=6, max=359, avg=29.23, stdev=29.33 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 39], 90.00th=[ 58], 95.00th=[ 77], | 99.00th=[ 142], 99.50th=[ 171], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 319, per=28.41%, avg=121.58, stdev=75.54, samples=102 iops : min= 1, max= 19, avg= 6.91, stdev= 4.75, samples=102 write: IOPS=6, BW=112KiB/s (115kB/s)(6032KiB/53915msec); 0 zone resets clat (msec): min=49, max=345, avg=112.28, stdev=46.08 lat (msec): min=49, max=345, avg=112.29, stdev=46.09 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 73], | 30.00th=[ 83], 40.00th=[ 94], 50.00th=[ 102], 60.00th=[ 114], | 70.00th=[ 126], 80.00th=[ 146], 90.00th=[ 174], 95.00th=[ 207], | 99.00th=[ 245], 99.50th=[ 275], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 31, max= 224, per=24.69%, avg=111.36, stdev=43.06, samples=107 iops : min= 1, max= 14, avg= 6.27, stdev= 2.77, samples=107 lat (msec) : 10=3.39%, 20=23.05%, 50=17.32%, 100=29.56%, 250=26.17% lat (msec) : 500=0.52% cpu : usr=0.03%, sys=1.55%, ctx=1315, 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=146209: Thu Aug 27 12:35:58 2026 read: IOPS=6, BW=109KiB/s (111kB/s)(6032KiB/55407msec) clat (msec): min=5, max=261, avg=32.31, stdev=30.20 lat (msec): min=5, max=261, avg=32.31, stdev=30.20 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 34], 80.00th=[ 43], 90.00th=[ 62], 95.00th=[ 85], | 99.00th=[ 186], 99.50th=[ 215], 99.90th=[ 262], 99.95th=[ 262], | 99.99th=[ 262] bw ( KiB/s): min= 31, max= 316, per=27.77%, avg=118.87, stdev=68.36, samples=100 iops : min= 1, max= 19, avg= 6.75, stdev= 4.30, samples=100 write: IOPS=7, BW=113KiB/s (116kB/s)(6256KiB/55407msec); 0 zone resets clat (msec): min=41, max=344, avg=110.28, stdev=46.09 lat (msec): min=41, max=344, avg=110.28, stdev=46.09 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 73], | 30.00th=[ 83], 40.00th=[ 92], 50.00th=[ 104], 60.00th=[ 112], | 70.00th=[ 124], 80.00th=[ 136], 90.00th=[ 174], 95.00th=[ 197], | 99.00th=[ 288], 99.50th=[ 296], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 31, max= 221, per=24.99%, avg=112.70, stdev=44.92, samples=110 iops : min= 1, max= 13, avg= 6.35, stdev= 2.88, samples=110 lat (msec) : 10=2.60%, 20=17.58%, 50=23.31%, 100=28.13%, 250=27.60% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=1.47%, ctx=1412, 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=429KiB/s (439kB/s), 103KiB/s-116KiB/s (105kB/s-119kB/s), io=23.4MiB (24.5MB), run=53915-55858msec WRITE: bw=451KiB/s (462kB/s), 112KiB/s-117KiB/s (115kB/s-120kB/s), io=24.6MiB (25.8MB), run=53915-55858msec 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=146228: Thu Aug 27 12:36:15 2026 read: IOPS=1, BW=1198KiB/s (1226kB/s)(7168KiB/5985msec) clat (msec): min=87, max=3015, avg=611.13, stdev=1067.41 lat (msec): min=87, max=3015, avg=611.13, stdev=1067.41 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 88], 10.00th=[ 88], 20.00th=[ 142], | 30.00th=[ 169], 40.00th=[ 169], 50.00th=[ 192], 60.00th=[ 197], | 70.00th=[ 197], 80.00th=[ 477], 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= 1976, max= 4031, per=91.25%, avg=2421.80, stdev=899.98, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=0, BW=855KiB/s (876kB/s)(5120KiB/5985msec); 0 zone resets clat (msec): min=176, max=537, avg=311.06, stdev=134.25 lat (msec): min=176, max=537, avg=311.16, stdev=134.22 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 279], 60.00th=[ 279], | 70.00th=[ 288], 80.00th=[ 288], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 1976, max= 4071, per=72.08%, avg=2678.33, stdev=1206.10, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.02%, sys=3.74%, ctx=84, 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=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=146229: Thu Aug 27 12:36:15 2026 read: IOPS=0, BW=265KiB/s (272kB/s)(2048KiB/7715msec) clat (msec): min=93, max=141, avg=117.39, stdev=34.09 lat (msec): min=93, max=141, avg=117.39, stdev=34.09 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 93], | 30.00th=[ 93], 40.00th=[ 93], 50.00th=[ 93], 60.00th=[ 142], | 70.00th=[ 142], 80.00th=[ 142], 90.00th=[ 142], 95.00th=[ 142], | 99.00th=[ 142], 99.50th=[ 142], 99.90th=[ 142], 99.95th=[ 142], | 99.99th=[ 142] bw ( KiB/s): min= 1984, max= 2035, per=75.72%, avg=2009.50, stdev=36.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1327KiB/s (1359kB/s)(10.0MiB/7715msec); 0 zone resets clat (msec): min=141, max=3059, avg=736.35, stdev=853.96 lat (msec): min=141, max=3059, avg=736.56, stdev=853.92 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 215], | 30.00th=[ 224], 40.00th=[ 481], 50.00th=[ 485], 60.00th=[ 498], | 70.00th=[ 558], 80.00th=[ 726], 90.00th=[ 978], 95.00th=[ 3071], | 99.00th=[ 3071], 99.50th=[ 3071], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3071] bw ( KiB/s): min= 1976, max= 4063, per=69.76%, avg=2592.43, stdev=975.46, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 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=3.51%, ctx=100, 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=146230: Thu Aug 27 12:36:15 2026 read: IOPS=0, BW=843KiB/s (863kB/s)(6144KiB/7287msec) clat (msec): min=131, max=810, avg=318.74, stdev=254.38 lat (msec): min=131, max=810, avg=318.74, stdev=254.38 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 180], | 30.00th=[ 180], 40.00th=[ 205], 50.00th=[ 205], 60.00th=[ 213], | 70.00th=[ 376], 80.00th=[ 376], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 2039, max= 4071, per=100.00%, avg=3354.33, stdev=1140.64, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=0, BW=843KiB/s (863kB/s)(6144KiB/7287msec); 0 zone resets clat (msec): min=140, max=3403, avg=871.44, stdev=1259.90 lat (msec): min=140, max=3403, avg=871.60, stdev=1259.85 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 140], 10.00th=[ 140], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 468], | 70.00th=[ 751], 80.00th=[ 751], 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= 2015, max= 2832, per=60.02%, avg=2230.25, stdev=401.30, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.42%, ctx=75, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146231: Thu Aug 27 12:36:15 2026 read: IOPS=0, BW=738KiB/s (756kB/s)(5120KiB/6939msec) clat (msec): min=86, max=1010, avg=331.71, stdev=388.11 lat (msec): min=86, max=1010, avg=331.71, stdev=388.11 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 87], 10.00th=[ 87], 20.00th=[ 87], | 30.00th=[ 127], 40.00th=[ 127], 50.00th=[ 133], 60.00th=[ 133], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 1011], 95.00th=[ 1011], | 99.00th=[ 1011], 99.50th=[ 1011], 99.90th=[ 1011], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 1976, max= 4063, per=100.00%, avg=2686.00, stdev=1192.71, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1033KiB/s (1058kB/s)(7168KiB/6939msec); 0 zone resets clat (msec): min=198, max=3088, avg=750.21, stdev=1035.09 lat (msec): min=198, max=3088, avg=750.34, stdev=1035.07 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 313], | 30.00th=[ 355], 40.00th=[ 355], 50.00th=[ 393], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 485], 90.00th=[ 3104], 95.00th=[ 3104], | 99.00th=[ 3104], 99.50th=[ 3104], 99.90th=[ 3104], 99.95th=[ 3104], | 99.99th=[ 3104] bw ( KiB/s): min= 1988, max= 4079, per=65.11%, avg=2419.40, stdev=927.83, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=50.00%, 2000=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=2.78%, ctx=94, 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=2655KiB/s (2718kB/s), 265KiB/s-1198KiB/s (272kB/s-1226kB/s), io=20.0MiB (20.0MB), run=5985-7715msec WRITE: bw=3716KiB/s (3806kB/s), 843KiB/s-1327KiB/s (863kB/s-1359kB/s), io=28.0MiB (29.4MB), run=5985-7715msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146232: Thu Aug 27 12:36:16 2026 read: IOPS=1, BW=1372KiB/s (1405kB/s)(7168KiB/5225msec) clat (usec): min=466, max=2791.0k, avg=531929.43, stdev=1003078.08 lat (usec): min=468, max=2791.0k, avg=531930.94, stdev=1003078.16 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 465], 10.00th=[ 465], | 20.00th=[ 106431], 30.00th=[ 120062], 40.00th=[ 120062], | 50.00th=[ 145753], 60.00th=[ 168821], 70.00th=[ 168821], | 80.00th=[ 387974], 90.00th=[2801796], 95.00th=[2801796], | 99.00th=[2801796], 99.50th=[2801796], 99.90th=[2801796], | 99.95th=[2801796], 99.99th=[2801796] bw ( KiB/s): min= 1430, max= 4096, per=100.00%, avg=3201.67, stdev=1534.33, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=0, BW=980KiB/s (1003kB/s)(5120KiB/5225msec); 0 zone resets clat (msec): min=162, max=413, avg=282.32, stdev=104.68 lat (msec): min=162, max=414, avg=282.39, stdev=104.70 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 163], | 30.00th=[ 226], 40.00th=[ 226], 50.00th=[ 241], 60.00th=[ 241], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 414], 95.00th=[ 414], | 99.00th=[ 414], 99.50th=[ 414], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 2039, max= 4096, per=83.22%, avg=2724.67, stdev=1187.61, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (usec) : 500=8.33% lat (msec) : 250=58.33%, 500=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=11.96%, ctx=671, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146233: Thu Aug 27 12:36:16 2026 read: IOPS=0, BW=262KiB/s (268kB/s)(2048KiB/7831msec) clat (usec): min=850, max=244174, avg=122512.83, stdev=172056.14 lat (usec): min=851, max=244177, avg=122514.55, stdev=172057.31 clat percentiles (usec): | 1.00th=[ 848], 5.00th=[ 848], 10.00th=[ 848], 20.00th=[ 848], | 30.00th=[ 848], 40.00th=[ 848], 50.00th=[ 848], 60.00th=[244319], | 70.00th=[244319], 80.00th=[244319], 90.00th=[244319], 95.00th=[244319], | 99.00th=[244319], 99.50th=[244319], 99.90th=[244319], 99.95th=[244319], | 99.99th=[244319] bw ( KiB/s): min= 1456, max= 2027, per=74.45%, avg=1741.50, stdev=403.76, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1308KiB/s (1339kB/s)(10.0MiB/7831msec); 0 zone resets clat (msec): min=121, max=2893, avg=729.01, stdev=802.05 lat (msec): min=122, max=2893, avg=729.19, stdev=801.95 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 122], 10.00th=[ 122], 20.00th=[ 264], | 30.00th=[ 422], 40.00th=[ 439], 50.00th=[ 447], 60.00th=[ 493], | 70.00th=[ 550], 80.00th=[ 558], 90.00th=[ 1116], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 2023, max= 4087, per=70.01%, avg=2292.13, stdev=725.29, samples=8 iops : min= 1, max= 3, avg= 1.37, stdev= 0.74, samples=8 lat (usec) : 1000=8.33% lat (msec) : 250=16.67%, 500=41.67%, 750=16.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.99%, ctx=256, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146234: Thu Aug 27 12:36:16 2026 read: IOPS=0, BW=702KiB/s (719kB/s)(6144KiB/8755msec) clat (msec): min=173, max=1450, avg=460.07, stdev=490.31 lat (msec): min=173, max=1450, avg=460.08, stdev=490.31 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 241], 50.00th=[ 241], 60.00th=[ 330], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 1452], 95.00th=[ 1452], | 99.00th=[ 1452], 99.50th=[ 1452], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 2023, max= 4087, per=100.00%, avg=2546.00, stdev=1027.37, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=702KiB/s (719kB/s)(6144KiB/8755msec); 0 zone resets clat (msec): min=190, max=3781, avg=975.56, stdev=1392.43 lat (msec): min=190, max=3781, avg=975.63, stdev=1392.44 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 489], | 70.00th=[ 810], 80.00th=[ 810], 90.00th=[ 3775], 95.00th=[ 3775], | 99.00th=[ 3775], 99.50th=[ 3775], 99.90th=[ 3775], 99.95th=[ 3775], | 99.99th=[ 3775] bw ( KiB/s): min= 2023, max= 2955, per=67.68%, avg=2216.00, stdev=413.24, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (msec) : 250=41.67%, 500=33.33%, 1000=8.33%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=7.57%, ctx=517, 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=146235: Thu Aug 27 12:36:16 2026 read: IOPS=0, BW=805KiB/s (824kB/s)(5120KiB/6359msec) clat (usec): min=982, max=574546, avg=249768.88, stdev=207447.33 lat (usec): min=984, max=574548, avg=249770.19, stdev=207447.44 clat percentiles (usec): | 1.00th=[ 979], 5.00th=[ 979], 10.00th=[ 979], 20.00th=[ 979], | 30.00th=[185598], 40.00th=[185598], 50.00th=[227541], 60.00th=[227541], | 70.00th=[261096], 80.00th=[261096], 90.00th=[574620], 95.00th=[574620], | 99.00th=[574620], 99.50th=[574620], 99.90th=[574620], 99.95th=[574620], | 99.99th=[574620] bw ( KiB/s): min= 2043, max= 4055, per=100.00%, avg=2715.33, stdev=1160.19, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1127KiB/s (1154kB/s)(7168KiB/6359msec); 0 zone resets clat (msec): min=143, max=3210, avg=724.75, stdev=1105.58 lat (msec): min=143, max=3210, avg=724.82, stdev=1105.58 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 230], | 30.00th=[ 249], 40.00th=[ 249], 50.00th=[ 313], 60.00th=[ 330], | 70.00th=[ 330], 80.00th=[ 600], 90.00th=[ 3205], 95.00th=[ 3205], | 99.00th=[ 3205], 99.50th=[ 3205], 99.90th=[ 3205], 99.95th=[ 3205], | 99.99th=[ 3205] bw ( KiB/s): min= 1398, max= 6071, per=83.05%, avg=2719.00, stdev=1894.46, samples=5 iops : min= 1, max= 5, avg= 2.00, stdev= 1.73, samples=5 lat (usec) : 1000=8.33% lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=10.32%, ctx=210, 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=2339KiB/s (2395kB/s), 262KiB/s-1372KiB/s (268kB/s-1405kB/s), io=20.0MiB (20.0MB), run=5225-8755msec WRITE: bw=3275KiB/s (3354kB/s), 702KiB/s-1308KiB/s (719kB/s-1339kB/s), io=28.0MiB (29.4MB), run=5225-8755msec 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=146244: Thu Aug 27 12:36:29 2026 read: IOPS=1, BW=5129KiB/s (5252kB/s)(12.0MiB/2396msec) clat (msec): min=554, max=947, avg=774.89, stdev=201.00 lat (msec): min=554, max=947, avg=774.89, stdev=201.00 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 827], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 6320, max= 8143, per=100.00%, avg=7231.50, stdev=1289.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=15.53%, ctx=280, 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=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=146245: Thu Aug 27 12:36:29 2026 read: IOPS=0, BW=1420KiB/s (1454kB/s)(4096KiB/2884msec) clat (nsec): min=663671k, max=663671k, avg=663671458.00, stdev= 0.00 lat (nsec): min=663672k, max=663672k, avg=663672342.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] 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=2840KiB/s (2909kB/s)(8192KiB/2884msec); 0 zone resets clat (msec): min=981, max=1082, avg=1031.73, stdev=71.45 lat (msec): min=983, max=1083, avg=1033.57, stdev=70.73 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 978], 50.00th=[ 978], 60.00th=[ 1083], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 8192, max= 8192, per=85.13%, 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%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.52%, ctx=90, 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=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=146247: Thu Aug 27 12:36:29 2026 write: IOPS=0, BW=3609KiB/s (3695kB/s)(12.0MiB/3405msec); 0 zone resets clat (msec): min=333, max=2107, avg=1116.38, stdev=905.31 lat (msec): min=333, max=2107, avg=1116.74, stdev=905.25 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 911], 50.00th=[ 911], 60.00th=[ 911], | 70.00th=[ 2106], 80.00th=[ 2106], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 8175, max= 8175, per=84.95%, avg=8175.00, stdev= 0.00, 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=4.29%, ctx=52, 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=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=146249: Thu Aug 27 12:36:29 2026 write: IOPS=1, BW=4778KiB/s (4892kB/s)(12.0MiB/2572msec); 0 zone resets clat (msec): min=367, max=1244, avg=837.70, stdev=441.95 lat (msec): min=367, max=1245, avg=838.44, stdev=442.13 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 902], 50.00th=[ 902], 60.00th=[ 902], | 70.00th=[ 1250], 80.00th=[ 1250], 90.00th=[ 1250], 95.00th=[ 1250], | 99.00th=[ 1250], 99.50th=[ 1250], 99.90th=[ 1250], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 5542, max= 8143, per=71.11%, avg=6842.50, stdev=1839.18, 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=5.41%, ctx=66, 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=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=5681KiB/s (5817kB/s), 1420KiB/s-5129KiB/s (1454kB/s-5252kB/s), io=16.0MiB (16.8MB), run=2396-2884msec WRITE: bw=9623KiB/s (9854kB/s), 2840KiB/s-4778KiB/s (2909kB/s-4892kB/s), io=32.0MiB (33.6MB), run=2572-3405msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146243: Thu Aug 27 12:36:29 2026 read: IOPS=2, BW=9387KiB/s (9613kB/s)(12.0MiB/1309msec) clat (msec): min=255, max=648, avg=412.41, stdev=207.71 lat (msec): min=255, max=648, avg=412.41, stdev=207.71 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 257], | 30.00th=[ 257], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 651], 80.00th=[ 651], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 8031, max= 8159, per=100.00%, avg=8095.00, stdev=90.51, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 750=33.33% cpu : usr=0.00%, sys=10.24%, ctx=75, 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=146246: Thu Aug 27 12:36:29 2026 read: IOPS=0, BW=1215KiB/s (1244kB/s)(4096KiB/3371msec) clat (nsec): min=1793.9M, max=1793.9M, avg=1793855432.00, stdev= 0.00 lat (nsec): min=1793.9M, max=1793.9M, avg=1793858051.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1787], 5.00th=[ 1787], 10.00th=[ 1787], 20.00th=[ 1787], | 30.00th=[ 1787], 40.00th=[ 1787], 50.00th=[ 1787], 60.00th=[ 1787], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2430KiB/s (2488kB/s)(8192KiB/3371msec); 0 zone resets clat (msec): min=658, max=814, avg=736.80, stdev=110.07 lat (msec): min=659, max=814, avg=737.20, stdev=109.95 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 818], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 8192, max= 8192, per=84.28%, 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%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.39%, ctx=73, 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=146248: Thu Aug 27 12:36:29 2026 write: IOPS=0, BW=4017KiB/s (4113kB/s)(12.0MiB/3059msec); 0 zone resets clat (msec): min=595, max=1636, avg=1001.11, stdev=557.39 lat (msec): min=595, max=1636, avg=1001.39, stdev=557.29 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 768], 50.00th=[ 768], 60.00th=[ 768], | 70.00th=[ 1636], 80.00th=[ 1636], 90.00th=[ 1636], 95.00th=[ 1636], | 99.00th=[ 1636], 99.50th=[ 1636], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 7984, max= 8094, per=82.71%, avg=8039.00, stdev=77.78, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.02%, ctx=47, 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=146250: Thu Aug 27 12:36:29 2026 write: IOPS=1, BW=4331KiB/s (4435kB/s)(12.0MiB/2837msec); 0 zone resets clat (msec): min=676, max=1178, avg=932.27, stdev=251.19 lat (msec): min=677, max=1179, avg=932.59, stdev=251.17 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 944], 50.00th=[ 944], 60.00th=[ 944], | 70.00th=[ 1183], 80.00th=[ 1183], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 8094, max= 8159, per=83.61%, avg=8126.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.32%, ctx=57, 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=4860KiB/s (4977kB/s), 1215KiB/s-9387KiB/s (1244kB/s-9613kB/s), io=16.0MiB (16.8MB), run=1309-3371msec WRITE: bw=9721KiB/s (9954kB/s), 2430KiB/s-4331KiB/s (2488kB/s-4435kB/s), io=32.0MiB (33.6MB), run=2837-3371msec