== sanity test 398b: DIO and buffer IO race ============== 13:25:50 (1787851550) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.95348 s, 7.2 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=144757: Thu Aug 27 13:28:40 2026 read: IOPS=10, BW=41.0KiB/s (42.0kB/s)(5992KiB/145982msec) clat (usec): min=31, max=809249, avg=48691.90, stdev=42051.19 lat (usec): min=31, max=809250, avg=48694.29, stdev=42051.18 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 60], 10.00th=[ 4883], 20.00th=[ 22676], | 30.00th=[ 28705], 40.00th=[ 34866], 50.00th=[ 41681], 60.00th=[ 48497], | 70.00th=[ 58983], 80.00th=[ 71828], 90.00th=[ 91751], 95.00th=[111674], | 99.00th=[175113], 99.50th=[193987], 99.90th=[557843], 99.95th=[809501], | 99.99th=[809501] bw ( KiB/s): min= 7, max= 108, per=25.60%, avg=40.96, stdev=17.75, samples=285 iops : min= 1, max= 27, avg= 9.59, stdev= 4.47, samples=285 write: IOPS=10, BW=43.1KiB/s (44.2kB/s)(6296KiB/145982msec); 0 zone resets clat (usec): min=924, max=484998, avg=46063.81, stdev=50666.31 lat (usec): min=924, max=485000, avg=46068.97, stdev=50664.37 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1205], 10.00th=[ 1418], 20.00th=[ 4686], | 30.00th=[ 10290], 40.00th=[ 20055], 50.00th=[ 32637], 60.00th=[ 43779], | 70.00th=[ 57934], 80.00th=[ 80217], 90.00th=[109577], 95.00th=[141558], | 99.00th=[219153], 99.50th=[250610], 99.90th=[455082], 99.95th=[484443], | 99.99th=[484443] bw ( KiB/s): min= 7, max= 125, per=25.69%, avg=43.16, stdev=20.29, samples=284 iops : min= 1, max= 31, avg=10.15, stdev= 5.11, samples=284 lat (usec) : 50=0.49%, 100=3.74%, 250=0.36%, 500=0.10%, 1000=0.23% lat (msec) : 2=6.45%, 4=2.86%, 10=5.89%, 20=8.30%, 50=34.93% lat (msec) : 100=26.76%, 250=9.51%, 500=0.33%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=4.65%, ctx=6274, 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=144758: Thu Aug 27 13:28:40 2026 read: IOPS=10, BW=40.5KiB/s (41.5kB/s)(5940KiB/146727msec) clat (usec): min=32, max=437083, avg=47465.66, stdev=39623.58 lat (usec): min=32, max=437085, avg=47470.91, stdev=39621.15 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 63], 10.00th=[ 10290], 20.00th=[ 20841], | 30.00th=[ 26084], 40.00th=[ 33162], 50.00th=[ 39584], 60.00th=[ 46400], | 70.00th=[ 56361], 80.00th=[ 70779], 90.00th=[ 92799], 95.00th=[111674], | 99.00th=[177210], 99.50th=[225444], 99.90th=[413139], 99.95th=[438305], | 99.99th=[438305] bw ( KiB/s): min= 5, max= 103, per=25.26%, avg=40.42, stdev=19.14, samples=286 iops : min= 1, max= 25, avg= 9.44, stdev= 4.82, samples=286 write: IOPS=10, BW=43.3KiB/s (44.3kB/s)(6348KiB/146727msec); 0 zone resets clat (usec): min=820, max=527101, avg=47719.80, stdev=51646.79 lat (usec): min=822, max=527103, avg=47723.92, stdev=51648.26 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1188], 10.00th=[ 1418], 20.00th=[ 4752], | 30.00th=[ 9896], 40.00th=[ 21365], 50.00th=[ 32900], 60.00th=[ 46924], | 70.00th=[ 62653], 80.00th=[ 83362], 90.00th=[113771], 95.00th=[139461], | 99.00th=[217056], 99.50th=[274727], 99.90th=[463471], 99.95th=[526386], | 99.99th=[526386] bw ( KiB/s): min= 7, max= 110, per=25.64%, avg=43.07, stdev=19.23, samples=287 iops : min= 1, max= 27, avg=10.11, stdev= 4.84, samples=287 lat (usec) : 50=0.46%, 100=3.45%, 250=0.16%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=6.74%, 4=2.86%, 10=6.28%, 20=9.31%, 50=33.37% lat (msec) : 100=25.98%, 250=10.58%, 500=0.49%, 750=0.03% cpu : usr=0.06%, sys=4.70%, ctx=6305, 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=144759: Thu Aug 27 13:28:40 2026 read: IOPS=10, BW=40.3KiB/s (41.3kB/s)(6028KiB/149404msec) clat (usec): min=21, max=646306, avg=49295.28, stdev=40867.38 lat (usec): min=21, max=646308, avg=49305.39, stdev=40860.31 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 10028], 20.00th=[ 21890], | 30.00th=[ 27657], 40.00th=[ 34866], 50.00th=[ 42206], 60.00th=[ 49546], | 70.00th=[ 60031], 80.00th=[ 72877], 90.00th=[ 94897], 95.00th=[112722], | 99.00th=[170918], 99.50th=[225444], 99.90th=[467665], 99.95th=[650118], | 99.99th=[650118] bw ( KiB/s): min= 7, max= 95, per=24.98%, avg=39.97, stdev=17.98, samples=291 iops : min= 1, max= 23, avg= 9.35, stdev= 4.53, samples=291 write: IOPS=10, BW=41.9KiB/s (42.9kB/s)(6260KiB/149404msec); 0 zone resets clat (usec): min=842, max=344927, avg=47630.57, stdev=49766.68 lat (usec): min=843, max=344928, avg=47633.91, stdev=49767.14 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1172], 10.00th=[ 1434], 20.00th=[ 4178], | 30.00th=[ 9896], 40.00th=[ 21890], 50.00th=[ 34341], 60.00th=[ 46400], | 70.00th=[ 62653], 80.00th=[ 83362], 90.00th=[114820], 95.00th=[143655], | 99.00th=[208667], 99.50th=[256902], 99.90th=[337642], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 7, max= 110, per=24.73%, avg=41.55, stdev=18.64, samples=291 iops : min= 1, max= 27, avg= 9.74, stdev= 4.69, samples=291 lat (usec) : 50=0.81%, 100=3.26%, 250=0.39%, 500=0.26%, 1000=0.29% lat (msec) : 2=6.45%, 4=3.19%, 10=5.53%, 20=8.14%, 50=33.17% lat (msec) : 100=27.80%, 250=10.22%, 500=0.46%, 750=0.03% cpu : usr=0.08%, sys=4.71%, ctx=6237, 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=144760: Thu Aug 27 13:28:40 2026 read: IOPS=10, BW=40.7KiB/s (41.7kB/s)(6052KiB/148718msec) clat (usec): min=33, max=662022, avg=47087.77, stdev=37716.05 lat (usec): min=33, max=662023, avg=47093.12, stdev=37715.45 clat percentiles (usec): | 1.00th=[ 48], 5.00th=[ 61], 10.00th=[ 523], 20.00th=[ 20317], | 30.00th=[ 27657], 40.00th=[ 33817], 50.00th=[ 41157], 60.00th=[ 49546], | 70.00th=[ 56886], 80.00th=[ 68682], 90.00th=[ 89654], 95.00th=[111674], | 99.00th=[166724], 99.50th=[189793], 99.90th=[235930], 99.95th=[658506], | 99.99th=[658506] bw ( KiB/s): min= 5, max= 103, per=25.35%, avg=40.55, stdev=18.15, samples=288 iops : min= 1, max= 25, avg= 9.47, stdev= 4.58, samples=288 write: IOPS=10, BW=41.9KiB/s (42.9kB/s)(6236KiB/148718msec); 0 zone resets clat (usec): min=828, max=480066, avg=49339.81, stdev=51695.11 lat (usec): min=829, max=480066, avg=49343.45, stdev=51694.41 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1188], 10.00th=[ 1418], 20.00th=[ 4752], | 30.00th=[ 10552], 40.00th=[ 24249], 50.00th=[ 36439], 60.00th=[ 49021], | 70.00th=[ 65274], 80.00th=[ 84411], 90.00th=[116917], 95.00th=[145753], | 99.00th=[208667], 99.50th=[246416], 99.90th=[413139], 99.95th=[480248], | 99.99th=[480248] bw ( KiB/s): min= 7, max= 109, per=24.69%, avg=41.48, stdev=18.14, samples=290 iops : min= 1, max= 27, avg= 9.72, stdev= 4.58, samples=290 lat (usec) : 50=0.75%, 100=3.78%, 250=0.26%, 500=0.13%, 750=0.07% lat (usec) : 1000=0.26% lat (msec) : 2=6.22%, 4=3.09%, 10=5.86%, 20=8.07%, 50=31.93% lat (msec) : 100=28.81%, 250=10.51%, 500=0.23%, 750=0.03% cpu : usr=0.07%, sys=4.68%, ctx=6260, 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=161KiB/s (165kB/s), 40.3KiB/s-41.0KiB/s (41.3kB/s-42.0kB/s), io=23.4MiB (24.6MB), run=145982-149404msec WRITE: bw=168KiB/s (172kB/s), 41.9KiB/s-43.3KiB/s (42.9kB/s-44.3kB/s), io=24.6MiB (25.7MB), run=145982-149404msec fio: pid=144764, err=5/file:backend.c:481, func=full resid, error=Input/output error rand-rw: (groupid=0, jobs=1): err= 0: pid=144761: Thu Aug 27 13:31:34 2026 read: IOPS=4, BW=18.5KiB/s (18.0kB/s)(5992KiB/323252msec) clat (msec): min=5, max=591, avg=43.74, stdev=43.84 lat (msec): min=5, max=591, avg=43.75, stdev=43.84 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 25], 50.00th=[ 31], 60.00th=[ 37], | 70.00th=[ 45], 80.00th=[ 60], 90.00th=[ 95], 95.00th=[ 129], | 99.00th=[ 213], 99.50th=[ 253], 99.90th=[ 338], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 7, max= 87, per=30.69%, avg=22.41, stdev=14.93, samples=515 iops : min= 1, max= 21, avg= 4.98, stdev= 3.78, samples=515 write: IOPS=4, BW=19.5KiB/s (19.9kB/s)(6296KiB/323252msec); 0 zone resets clat (msec): min=33, max=822, avg=163.43, stdev=91.94 lat (msec): min=33, max=822, avg=163.44, stdev=91.94 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 58], 10.00th=[ 72], 20.00th=[ 90], | 30.00th=[ 105], 40.00th=[ 122], 50.00th=[ 140], 60.00th=[ 161], | 70.00th=[ 188], 80.00th=[ 230], 90.00th=[ 292], 95.00th=[ 338], | 99.00th=[ 451], 99.50th=[ 558], 99.90th=[ 676], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 63, per=25.71%, avg=19.54, stdev=10.56, samples=617 iops : min= 1, max= 15, avg= 4.26, stdev= 2.70, samples=617 lat (msec) : 10=2.70%, 20=11.85%, 50=22.88%, 100=20.64%, 250=33.56% lat (msec) : 500=8.07%, 750=0.26%, 1000=0.03% cpu : usr=0.04%, sys=1.04%, ctx=5438, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144762: Thu Aug 27 13:31:34 2026 read: IOPS=4, BW=18.5KiB/s (18.9kB/s)(5940KiB/321306msec) clat (msec): min=5, max=678, avg=40.45, stdev=40.89 lat (msec): min=5, max=678, avg=40.46, stdev=40.89 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 29], 60.00th=[ 36], | 70.00th=[ 43], 80.00th=[ 56], 90.00th=[ 81], 95.00th=[ 111], | 99.00th=[ 188], 99.50th=[ 209], 99.90th=[ 493], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 95, per=30.41%, avg=22.20, stdev=15.34, samples=515 iops : min= 1, max= 23, avg= 4.93, stdev= 3.90, samples=515 write: IOPS=4, BW=19.8KiB/s (20.2kB/s)(6348KiB/321306msec); 0 zone resets clat (msec): min=33, max=779, avg=164.31, stdev=90.02 lat (msec): min=33, max=779, avg=164.31, stdev=90.02 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 62], 10.00th=[ 71], 20.00th=[ 90], | 30.00th=[ 106], 40.00th=[ 124], 50.00th=[ 142], 60.00th=[ 165], | 70.00th=[ 192], 80.00th=[ 230], 90.00th=[ 288], 95.00th=[ 330], | 99.00th=[ 451], 99.50th=[ 523], 99.90th=[ 592], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 55, per=25.62%, avg=19.47, stdev=10.20, samples=624 iops : min= 1, max= 13, avg= 4.24, stdev= 2.61, samples=624 lat (msec) : 10=3.03%, 20=11.78%, 50=22.82%, 100=21.09%, 250=33.11% lat (msec) : 500=7.88%, 750=0.26%, 1000=0.03% cpu : usr=0.04%, sys=1.04%, ctx=5476, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144763: Thu Aug 27 13:31:34 2026 read: IOPS=4, BW=18.7KiB/s (19.2kB/s)(6028KiB/321524msec) clat (msec): min=5, max=758, avg=45.25, stdev=47.73 lat (msec): min=5, max=758, avg=45.26, stdev=47.73 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 21], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 62], 90.00th=[ 94], 95.00th=[ 133], | 99.00th=[ 213], 99.50th=[ 284], 99.90th=[ 481], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 102, per=29.17%, avg=21.29, stdev=14.90, samples=543 iops : min= 1, max= 25, avg= 4.69, stdev= 3.78, samples=543 write: IOPS=4, BW=19.5KiB/s (19.9kB/s)(6260KiB/321524msec); 0 zone resets clat (msec): min=28, max=759, avg=161.54, stdev=89.27 lat (msec): min=28, max=759, avg=161.55, stdev=89.27 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 61], 10.00th=[ 70], 20.00th=[ 90], | 30.00th=[ 105], 40.00th=[ 123], 50.00th=[ 140], 60.00th=[ 163], | 70.00th=[ 190], 80.00th=[ 224], 90.00th=[ 279], 95.00th=[ 342], | 99.00th=[ 464], 99.50th=[ 514], 99.90th=[ 600], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 63, per=25.53%, avg=19.40, stdev=10.35, samples=616 iops : min= 1, max= 15, avg= 4.22, stdev= 2.65, samples=616 lat (msec) : 10=2.12%, 20=11.65%, 50=22.79%, 100=22.01%, 250=33.76% lat (msec) : 500=7.32%, 750=0.29%, 1000=0.07% cpu : usr=0.04%, sys=1.06%, ctx=5388, 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=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 5 (file:backend.c:481, func=full resid, error=Input/output error): pid=144764: Thu Aug 27 13:31:34 2026 read: IOPS=4, BW=18.3KiB/s (18.7kB/s)(5704KiB/311812msec) clat (msec): min=4, max=462, avg=43.81, stdev=44.93 lat (msec): min=4, max=462, avg=43.81, stdev=44.93 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 24], 50.00th=[ 30], 60.00th=[ 38], | 70.00th=[ 48], 80.00th=[ 61], 90.00th=[ 93], 95.00th=[ 126], | 99.00th=[ 218], 99.50th=[ 257], 99.90th=[ 414], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 7, max= 79, per=30.35%, avg=22.15, stdev=15.87, samples=495 iops : min= 1, max= 19, avg= 4.92, stdev= 4.01, samples=495 write: IOPS=4, BW=18.8KiB/s (19.3kB/s)(5876KiB/311812msec); 0 zone resets clat (msec): min=32, max=876, avg=169.39, stdev=92.39 lat (msec): min=32, max=876, avg=169.40, stdev=92.39 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 62], 10.00th=[ 74], 20.00th=[ 95], | 30.00th=[ 110], 40.00th=[ 128], 50.00th=[ 150], 60.00th=[ 174], | 70.00th=[ 201], 80.00th=[ 236], 90.00th=[ 288], 95.00th=[ 347], | 99.00th=[ 460], 99.50th=[ 506], 99.90th=[ 818], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 56, per=24.59%, avg=18.69, stdev=10.14, samples=601 iops : min= 1, max= 14, avg= 4.04, stdev= 2.60, samples=601 lat (msec) : 10=3.18%, 20=13.16%, 50=19.82%, 100=20.72%, 250=34.67% lat (msec) : 500=8.15%, 750=0.21%, 1000=0.07% cpu : usr=0.03%, sys=0.98%, ctx=4799, majf=0, minf=21 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=1427,1469,0,0 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=73.2KiB/s (74.0kB/s), 18.3KiB/s-18.7KiB/s (18.7kB/s-19.2kB/s), io=23.1MiB (24.2MB), run=311812-323252msec WRITE: bw=76.7KiB/s (78.5kB/s), 18.8KiB/s-19.8KiB/s (19.3kB/s-20.2kB/s), io=24.2MiB (25.4MB), run=311812-323252msec 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=144828: Thu Aug 27 13:32:11 2026 read: IOPS=14, BW=237KiB/s (243kB/s)(5920KiB/24967msec) clat (usec): min=27, max=179639, avg=33742.37, stdev=27963.62 lat (usec): min=27, max=179639, avg=33752.03, stdev=27963.17 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 81], | 30.00th=[ 20579], 40.00th=[ 26346], 50.00th=[ 32375], 60.00th=[ 36963], | 70.00th=[ 45351], 80.00th=[ 52691], 90.00th=[ 66323], 95.00th=[ 82314], | 99.00th=[125305], 99.50th=[162530], 99.90th=[179307], 99.95th=[179307], | 99.99th=[179307] bw ( KiB/s): min= 122, max= 408, per=25.35%, avg=234.51, stdev=70.21, samples=49 iops : min= 7, max= 25, avg=13.94, stdev= 4.45, samples=49 write: IOPS=15, BW=255KiB/s (261kB/s)(6368KiB/24967msec); 0 zone resets clat (usec): min=1056, max=165468, avg=30873.86, stdev=32531.78 lat (usec): min=1058, max=165471, avg=30876.91, stdev=32531.26 clat percentiles (usec): | 1.00th=[ 1516], 5.00th=[ 1762], 10.00th=[ 2573], 20.00th=[ 4113], | 30.00th=[ 7701], 40.00th=[ 11207], 50.00th=[ 20055], 60.00th=[ 28181], | 70.00th=[ 38011], 80.00th=[ 52691], 90.00th=[ 82314], 95.00th=[ 99091], | 99.00th=[137364], 99.50th=[156238], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 30, max= 576, per=26.09%, avg=254.12, stdev=115.53, samples=49 iops : min= 1, max= 36, avg=15.16, stdev= 7.33, samples=49 lat (usec) : 50=1.43%, 100=9.11%, 250=0.26%, 750=0.13%, 1000=0.13% lat (msec) : 2=4.95%, 4=5.21%, 10=9.77%, 20=8.85%, 50=38.02% lat (msec) : 100=18.62%, 250=3.52% cpu : usr=0.07%, sys=6.22%, ctx=1367, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144829: Thu Aug 27 13:32:11 2026 read: IOPS=14, BW=230KiB/s (236kB/s)(5744KiB/24953msec) clat (usec): min=28, max=149015, avg=35695.43, stdev=27215.14 lat (usec): min=28, max=149018, avg=35696.85, stdev=27215.28 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 56], 10.00th=[ 64], 20.00th=[ 2474], | 30.00th=[ 22938], 40.00th=[ 28181], 50.00th=[ 34341], 60.00th=[ 39060], | 70.00th=[ 47449], 80.00th=[ 55837], 90.00th=[ 68682], 95.00th=[ 82314], | 99.00th=[121111], 99.50th=[143655], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 61, max= 448, per=24.77%, avg=229.16, stdev=75.30, samples=49 iops : min= 3, max= 28, avg=13.61, stdev= 4.77, samples=49 write: IOPS=16, BW=262KiB/s (269kB/s)(6544KiB/24953msec); 0 zone resets clat (usec): min=1185, max=142604, avg=29166.46, stdev=30562.75 lat (usec): min=1186, max=142606, avg=29168.93, stdev=30562.78 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1745], 10.00th=[ 2073], 20.00th=[ 4228], | 30.00th=[ 6521], 40.00th=[ 9372], 50.00th=[ 16581], 60.00th=[ 26608], | 70.00th=[ 38536], 80.00th=[ 54789], 90.00th=[ 76022], 95.00th=[ 95945], | 99.00th=[117965], 99.50th=[119014], 99.90th=[141558], 99.95th=[141558], | 99.99th=[141558] bw ( KiB/s): min= 95, max= 670, per=26.84%, avg=261.47, stdev=96.16, samples=49 iops : min= 5, max= 41, avg=15.63, stdev= 6.07, samples=49 lat (usec) : 50=1.04%, 100=7.42%, 250=0.52%, 500=0.26% lat (msec) : 2=4.95%, 4=5.08%, 10=12.89%, 20=8.72%, 50=34.90% lat (msec) : 100=21.22%, 250=2.99% cpu : usr=0.10%, sys=6.85%, ctx=1410, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144830: Thu Aug 27 13:32:11 2026 read: IOPS=15, BW=242KiB/s (248kB/s)(6256KiB/25867msec) clat (usec): min=38, max=156089, avg=36186.39, stdev=28848.55 lat (usec): min=38, max=156091, avg=36187.94, stdev=28848.55 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 58], 10.00th=[ 64], 20.00th=[ 102], | 30.00th=[ 21627], 40.00th=[ 27395], 50.00th=[ 33817], 60.00th=[ 40109], | 70.00th=[ 49546], 80.00th=[ 56886], 90.00th=[ 73925], 95.00th=[ 86508], | 99.00th=[132645], 99.50th=[152044], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 31, max= 410, per=26.18%, avg=242.16, stdev=73.34, samples=51 iops : min= 1, max= 25, avg=14.43, stdev= 4.70, samples=51 write: IOPS=14, BW=233KiB/s (239kB/s)(6032KiB/25867msec); 0 zone resets clat (usec): min=1404, max=233456, avg=30604.03, stdev=33785.02 lat (usec): min=1404, max=233458, avg=30606.84, stdev=33785.07 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1745], 10.00th=[ 1876], 20.00th=[ 4817], | 30.00th=[ 7570], 40.00th=[ 12256], 50.00th=[ 19268], 60.00th=[ 28443], | 70.00th=[ 37487], 80.00th=[ 51643], 90.00th=[ 71828], 95.00th=[ 93848], | 99.00th=[156238], 99.50th=[200279], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 94, max= 510, per=23.79%, avg=231.71, stdev=84.85, samples=51 iops : min= 5, max= 31, avg=13.76, stdev= 5.34, samples=51 lat (usec) : 50=0.78%, 100=9.24%, 250=1.04% lat (msec) : 2=5.34%, 4=3.26%, 10=9.64%, 20=10.03%, 50=35.42% lat (msec) : 100=21.61%, 250=3.65% cpu : usr=0.12%, sys=6.52%, ctx=1404, 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=144831: Thu Aug 27 13:32:11 2026 read: IOPS=14, BW=235KiB/s (240kB/s)(6032KiB/25699msec) clat (usec): min=36, max=174830, avg=35977.64, stdev=31558.45 lat (usec): min=36, max=174831, avg=35981.88, stdev=31555.13 clat percentiles (usec): | 1.00th=[ 39], 5.00th=[ 55], 10.00th=[ 61], 20.00th=[ 75], | 30.00th=[ 19792], 40.00th=[ 26346], 50.00th=[ 33817], 60.00th=[ 39060], | 70.00th=[ 45351], 80.00th=[ 55837], 90.00th=[ 78119], 95.00th=[ 96994], | 99.00th=[135267], 99.50th=[166724], 99.90th=[175113], 99.95th=[175113], | 99.99th=[175113] bw ( KiB/s): min= 94, max= 416, per=25.25%, avg=233.56, stdev=72.42, samples=50 iops : min= 5, max= 26, avg=13.88, stdev= 4.65, samples=50 write: IOPS=15, BW=243KiB/s (249kB/s)(6256KiB/25699msec); 0 zone resets clat (usec): min=1017, max=219678, avg=30866.08, stdev=34221.15 lat (usec): min=1020, max=219680, avg=30869.32, stdev=34220.63 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1696], 10.00th=[ 2114], 20.00th=[ 4228], | 30.00th=[ 6783], 40.00th=[ 11863], 50.00th=[ 18220], 60.00th=[ 26084], | 70.00th=[ 37487], 80.00th=[ 54264], 90.00th=[ 76022], 95.00th=[ 95945], | 99.00th=[170918], 99.50th=[198181], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 63, max= 448, per=24.92%, avg=242.68, stdev=106.66, samples=50 iops : min= 3, max= 28, avg=14.44, stdev= 6.73, samples=50 lat (usec) : 50=1.30%, 100=10.03%, 250=0.39%, 750=0.13% lat (msec) : 2=5.21%, 4=4.95%, 10=8.85%, 20=10.42%, 50=35.29% lat (msec) : 100=19.01%, 250=4.43% cpu : usr=0.08%, sys=6.49%, ctx=1449, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=926KiB/s (948kB/s), 230KiB/s-242KiB/s (236kB/s-248kB/s), io=23.4MiB (24.5MB), run=24953-25867msec WRITE: bw=974KiB/s (998kB/s), 233KiB/s-262KiB/s (239kB/s-269kB/s), io=24.6MiB (25.8MB), run=24953-25867msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144833: Thu Aug 27 13:32:46 2026 read: IOPS=6, BW=99.7KiB/s (102kB/s)(5920KiB/59377msec) clat (msec): min=6, max=199, avg=31.80, stdev=32.47 lat (msec): min=6, max=199, avg=31.80, stdev=32.47 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 32], 80.00th=[ 41], 90.00th=[ 58], 95.00th=[ 104], | 99.00th=[ 169], 99.50th=[ 186], 99.90th=[ 201], 99.95th=[ 201], | 99.99th=[ 201] bw ( KiB/s): min= 31, max= 352, per=27.16%, avg=107.56, stdev=65.61, samples=108 iops : min= 1, max= 22, avg= 5.96, stdev= 4.15, samples=108 write: IOPS=6, BW=107KiB/s (110kB/s)(6368KiB/59377msec); 0 zone resets clat (msec): min=37, max=395, avg=119.51, stdev=62.65 lat (msec): min=38, max=395, avg=119.52, stdev=62.65 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 71], | 30.00th=[ 80], 40.00th=[ 90], 50.00th=[ 99], 60.00th=[ 114], | 70.00th=[ 136], 80.00th=[ 165], 90.00th=[ 203], 95.00th=[ 251], | 99.00th=[ 347], 99.50th=[ 380], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 27, max= 253, per=25.58%, avg=106.66, stdev=50.96, samples=117 iops : min= 1, max= 15, avg= 5.91, stdev= 3.22, samples=117 lat (msec) : 10=3.12%, 20=20.31%, 50=19.27%, 100=28.91%, 250=25.91% lat (msec) : 500=2.47% cpu : usr=0.06%, sys=1.45%, ctx=1307, 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=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=144834: Thu Aug 27 13:32:46 2026 read: IOPS=5, BW=95.2KiB/s (97.5kB/s)(5744KiB/60348msec) clat (msec): min=5, max=284, avg=31.83, stdev=35.52 lat (msec): min=5, max=284, avg=31.84, stdev=35.52 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 44], 90.00th=[ 67], 95.00th=[ 104], | 99.00th=[ 184], 99.50th=[ 257], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 27, max= 349, per=26.98%, avg=106.84, stdev=70.49, samples=105 iops : min= 1, max= 21, avg= 5.90, stdev= 4.43, samples=105 write: IOPS=6, BW=108KiB/s (111kB/s)(6544KiB/60348msec); 0 zone resets clat (msec): min=30, max=356, avg=119.41, stdev=62.34 lat (msec): min=30, max=356, avg=119.41, stdev=62.34 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 53], 10.00th=[ 62], 20.00th=[ 72], | 30.00th=[ 82], 40.00th=[ 92], 50.00th=[ 102], 60.00th=[ 113], | 70.00th=[ 131], 80.00th=[ 161], 90.00th=[ 207], 95.00th=[ 253], | 99.00th=[ 342], 99.50th=[ 347], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 30, max= 255, per=26.08%, avg=108.75, stdev=52.17, samples=118 iops : min= 1, max= 15, avg= 6.03, stdev= 3.32, samples=118 lat (msec) : 10=4.82%, 20=20.31%, 50=16.15%, 100=28.65%, 250=26.95% lat (msec) : 500=3.12% cpu : usr=0.05%, sys=1.32%, ctx=1270, 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=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=144835: Thu Aug 27 13:32:46 2026 read: IOPS=6, BW=109KiB/s (111kB/s)(6256KiB/57621msec) clat (msec): min=6, max=283, avg=30.59, stdev=30.82 lat (msec): min=6, max=283, avg=30.60, stdev=30.82 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 29], 80.00th=[ 39], 90.00th=[ 63], 95.00th=[ 89], | 99.00th=[ 167], 99.50th=[ 228], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 381, per=30.87%, avg=122.24, stdev=79.62, samples=101 iops : min= 1, max= 23, avg= 6.87, stdev= 4.99, samples=101 write: IOPS=6, BW=105KiB/s (107kB/s)(6032KiB/57621msec); 0 zone resets clat (msec): min=40, max=403, avg=120.94, stdev=63.90 lat (msec): min=40, max=403, avg=120.95, stdev=63.90 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 57], 10.00th=[ 63], 20.00th=[ 71], | 30.00th=[ 81], 40.00th=[ 89], 50.00th=[ 104], 60.00th=[ 118], | 70.00th=[ 138], 80.00th=[ 161], 90.00th=[ 199], 95.00th=[ 249], | 99.00th=[ 342], 99.50th=[ 388], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] bw ( KiB/s): min= 30, max= 223, per=25.45%, avg=106.11, stdev=47.76, samples=111 iops : min= 1, max= 13, avg= 5.87, stdev= 3.05, samples=111 lat (msec) : 10=2.99%, 20=22.01%, 50=20.18%, 100=27.73%, 250=24.74% lat (msec) : 500=2.34% cpu : usr=0.04%, sys=1.43%, ctx=1353, 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=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=144836: Thu Aug 27 13:32:46 2026 read: IOPS=6, BW=101KiB/s (104kB/s)(6032KiB/59475msec) clat (msec): min=6, max=270, avg=32.17, stdev=32.96 lat (msec): min=6, max=270, avg=32.18, stdev=32.96 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 23], | 70.00th=[ 32], 80.00th=[ 43], 90.00th=[ 72], 95.00th=[ 101], | 99.00th=[ 188], 99.50th=[ 205], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 30, max= 352, per=27.69%, avg=109.64, stdev=69.88, samples=107 iops : min= 1, max= 22, avg= 6.10, stdev= 4.42, samples=107 write: IOPS=6, BW=105KiB/s (108kB/s)(6256KiB/59475msec); 0 zone resets clat (msec): min=41, max=352, avg=120.97, stdev=63.19 lat (msec): min=41, max=352, avg=120.97, stdev=63.19 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 57], 10.00th=[ 65], 20.00th=[ 75], | 30.00th=[ 84], 40.00th=[ 92], 50.00th=[ 102], 60.00th=[ 113], | 70.00th=[ 132], 80.00th=[ 155], 90.00th=[ 207], 95.00th=[ 275], | 99.00th=[ 342], 99.50th=[ 351], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 30, max= 224, per=25.12%, avg=104.77, stdev=52.00, samples=117 iops : min= 1, max= 14, avg= 5.79, stdev= 3.29, samples=117 lat (msec) : 10=3.39%, 20=22.01%, 50=16.80%, 100=29.43%, 250=24.87% lat (msec) : 500=3.52% cpu : usr=0.05%, sys=1.36%, ctx=1263, 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=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=397KiB/s (406kB/s), 95.2KiB/s-109KiB/s (97.5kB/s-111kB/s), io=23.4MiB (24.5MB), run=57621-60348msec WRITE: bw=418KiB/s (428kB/s), 105KiB/s-108KiB/s (107kB/s-111kB/s), io=24.6MiB (25.8MB), run=57621-60348msec 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=144854: Thu Aug 27 13:32:57 2026 read: IOPS=2, BW=2280KiB/s (2335kB/s)(7168KiB/3144msec) clat (usec): min=1250, max=551072, avg=197863.74, stdev=175712.18 lat (usec): min=1251, max=551073, avg=197865.44, stdev=175711.86 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 1254], 10.00th=[ 1254], 20.00th=[108528], | 30.00th=[114820], 40.00th=[114820], 50.00th=[145753], 60.00th=[202376], | 70.00th=[202376], 80.00th=[261096], 90.00th=[549454], 95.00th=[549454], | 99.00th=[549454], 99.50th=[549454], 99.90th=[549454], 99.95th=[549454], | 99.99th=[549454] bw ( KiB/s): min= 1950, max= 4134, per=52.63%, avg=2541.50, stdev=1062.53, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1628KiB/s (1668kB/s)(5120KiB/3144msec); 0 zone resets clat (msec): min=189, max=626, avg=342.41, stdev=194.84 lat (msec): min=189, max=626, avg=342.49, stdev=194.85 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 245], 60.00th=[ 245], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 1378, max= 4047, per=36.82%, avg=2489.33, stdev=1389.35, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 2=8.33%, 250=58.33%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=20.17%, ctx=200, 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=144855: Thu Aug 27 13:32:57 2026 read: IOPS=0, BW=483KiB/s (494kB/s)(2048KiB/4241msec) clat (usec): min=529, max=94856, avg=47693.04, stdev=66699.43 lat (usec): min=530, max=94859, avg=47695.05, stdev=66700.06 clat percentiles (usec): | 1.00th=[ 529], 5.00th=[ 529], 10.00th=[ 529], 20.00th=[ 529], | 30.00th=[ 529], 40.00th=[ 529], 50.00th=[ 529], 60.00th=[94897], | 70.00th=[94897], 80.00th=[94897], 90.00th=[94897], 95.00th=[94897], | 99.00th=[94897], 99.50th=[94897], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 1514, max= 2043, per=36.83%, avg=1778.50, stdev=374.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2415KiB/s (2472kB/s)(10.0MiB/4241msec); 0 zone resets clat (msec): min=194, max=978, avg=407.93, stdev=221.30 lat (msec): min=194, max=978, avg=408.03, stdev=221.31 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 207], | 30.00th=[ 313], 40.00th=[ 347], 50.00th=[ 351], 60.00th=[ 368], | 70.00th=[ 388], 80.00th=[ 418], 90.00th=[ 514], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 1514, max= 4079, per=37.50%, avg=2534.71, stdev=1068.81, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=16.67%, 500=50.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=10.90%, ctx=168, 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=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=144856: Thu Aug 27 13:32:57 2026 read: IOPS=1, BW=2034KiB/s (2083kB/s)(6144KiB/3020msec) clat (usec): min=481, max=168918, avg=30177.78, stdev=68027.69 lat (usec): min=483, max=168918, avg=30178.98, stdev=68027.43 clat percentiles (usec): | 1.00th=[ 482], 5.00th=[ 482], 10.00th=[ 482], 20.00th=[ 586], | 30.00th=[ 586], 40.00th=[ 1156], 50.00th=[ 1156], 60.00th=[ 1926], | 70.00th=[ 8029], 80.00th=[ 8029], 90.00th=[168821], 95.00th=[168821], | 99.00th=[168821], 99.50th=[168821], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 2031, max= 3900, per=54.99%, avg=2655.33, stdev=1077.91, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=2034KiB/s (2083kB/s)(6144KiB/3020msec); 0 zone resets clat (msec): min=251, max=568, avg=435.65, stdev=121.41 lat (msec): min=252, max=569, avg=435.90, stdev=121.52 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 253], 10.00th=[ 253], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 443], 50.00th=[ 443], 60.00th=[ 447], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1950, max= 4079, per=39.76%, avg=2688.00, stdev=1205.39, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=16.67%, 10=8.33%, 250=8.33%, 500=33.33%, 750=16.67% cpu : usr=0.03%, sys=13.22%, ctx=134, 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=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=144857: Thu Aug 27 13:32:57 2026 read: IOPS=1, BW=1423KiB/s (1457kB/s)(5120KiB/3599msec) clat (usec): min=419, max=164629, avg=63268.41, stdev=85586.31 lat (usec): min=420, max=164631, avg=63269.68, stdev=85586.17 clat percentiles (usec): | 1.00th=[ 420], 5.00th=[ 420], 10.00th=[ 420], 20.00th=[ 420], | 30.00th=[ 627], 40.00th=[ 627], 50.00th=[ 1647], 60.00th=[ 1647], | 70.00th=[149947], 80.00th=[149947], 90.00th=[164627], 95.00th=[164627], | 99.00th=[164627], 99.50th=[164627], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] 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=1992KiB/s (2039kB/s)(7168KiB/3599msec); 0 zone resets clat (msec): min=246, max=624, avg=405.68, stdev=143.69 lat (msec): min=246, max=624, avg=406.12, stdev=143.88 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 251], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 430], 60.00th=[ 443], | 70.00th=[ 443], 80.00th=[ 531], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 1950, max= 4047, per=37.27%, avg=2519.75, stdev=1019.07, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 250=33.33%, 500=25.00%, 750=16.67% cpu : usr=0.00%, sys=14.54%, ctx=120, 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=4829KiB/s (4945kB/s), 483KiB/s-2280KiB/s (494kB/s-2335kB/s), io=20.0MiB (20.0MB), run=3020-4241msec WRITE: bw=6761KiB/s (6923kB/s), 1628KiB/s-2415KiB/s (1668kB/s-2472kB/s), io=28.0MiB (29.4MB), run=3020-4241msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144858: Thu Aug 27 13:32:58 2026 read: IOPS=1, BW=1462KiB/s (1497kB/s)(7168KiB/4902msec) clat (msec): min=64, max=794, avg=421.80, stdev=318.46 lat (msec): min=64, max=794, avg=421.80, stdev=318.46 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 105], | 30.00th=[ 107], 40.00th=[ 107], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 726], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1872, max= 4079, per=57.63%, avg=2407.20, stdev=937.02, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1044KiB/s (1070kB/s)(5120KiB/4902msec); 0 zone resets clat (msec): min=217, max=394, avg=309.14, stdev=79.23 lat (msec): min=219, max=397, avg=310.06, stdev=79.53 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 218], | 30.00th=[ 234], 40.00th=[ 234], 50.00th=[ 334], 60.00th=[ 334], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 2027, max= 4071, per=46.35%, avg=2711.00, stdev=1177.80, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=2.16%, ctx=62, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144859: Thu Aug 27 13:32:58 2026 read: IOPS=0, BW=428KiB/s (438kB/s)(2048KiB/4790msec) clat (msec): min=170, max=342, avg=256.74, stdev=121.54 lat (msec): min=170, max=342, avg=256.74, stdev=121.54 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 171], | 30.00th=[ 171], 40.00th=[ 171], 50.00th=[ 171], 60.00th=[ 342], | 70.00th=[ 342], 80.00th=[ 342], 90.00th=[ 342], 95.00th=[ 342], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 1432, max= 2011, per=41.21%, avg=1721.50, stdev=409.41, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2138KiB/s (2189kB/s)(10.0MiB/4790msec); 0 zone resets clat (msec): min=205, max=619, avg=390.00, stdev=136.71 lat (msec): min=205, max=619, avg=390.12, stdev=136.70 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 245], | 30.00th=[ 251], 40.00th=[ 342], 50.00th=[ 380], 60.00th=[ 388], | 70.00th=[ 426], 80.00th=[ 489], 90.00th=[ 558], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 1872, max= 2048, per=34.35%, avg=2009.00, stdev=61.57, samples=7 iops : min= 1, max= 2, avg= 1.14, stdev= 0.38, samples=7 lat (msec) : 250=33.33%, 500=50.00%, 750=16.67% cpu : usr=0.02%, sys=5.22%, 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=144860: Thu Aug 27 13:32:58 2026 read: IOPS=1, BW=1286KiB/s (1317kB/s)(6144KiB/4778msec) clat (msec): min=75, max=396, avg=215.98, stdev=124.51 lat (msec): min=75, max=396, avg=215.98, stdev=124.51 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 128], | 30.00th=[ 128], 40.00th=[ 136], 50.00th=[ 136], 60.00th=[ 245], | 70.00th=[ 317], 80.00th=[ 317], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 2011, max= 2039, per=48.60%, avg=2030.00, stdev=12.81, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1286KiB/s (1317kB/s)(6144KiB/4778msec); 0 zone resets clat (msec): min=220, max=877, avg=523.22, stdev=275.23 lat (msec): min=220, max=877, avg=523.38, stdev=275.27 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 443], | 70.00th=[ 844], 80.00th=[ 844], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 2023, max= 2048, per=34.81%, avg=2036.25, stdev=10.37, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 1000=16.67% cpu : usr=0.00%, sys=3.77%, ctx=79, 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=144861: Thu Aug 27 13:32:58 2026 read: IOPS=1, BW=1186KiB/s (1214kB/s)(5120KiB/4318msec) clat (msec): min=174, max=246, avg=207.72, stdev=34.20 lat (msec): min=174, max=246, avg=207.72, stdev=34.20 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 176], 10.00th=[ 176], 20.00th=[ 176], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 207], 60.00th=[ 207], | 70.00th=[ 239], 80.00th=[ 239], 90.00th=[ 247], 95.00th=[ 247], | 99.00th=[ 247], 99.50th=[ 247], 99.90th=[ 247], 99.95th=[ 247], | 99.99th=[ 247] bw ( KiB/s): min= 3744, max= 4071, per=93.55%, avg=3907.50, stdev=231.22, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1660KiB/s (1700kB/s)(7168KiB/4318msec); 0 zone resets clat (msec): min=178, max=1009, avg=452.34, stdev=288.38 lat (msec): min=182, max=1010, avg=453.02, stdev=287.94 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 268], | 30.00th=[ 288], 40.00th=[ 288], 50.00th=[ 342], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 651], 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= 1467, max= 4096, per=46.83%, avg=2739.20, stdev=1248.63, samples=5 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=5 lat (msec) : 250=50.00%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=4.75%, ctx=92, 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=4178KiB/s (4278kB/s), 428KiB/s-1462KiB/s (438kB/s-1497kB/s), io=20.0MiB (20.0MB), run=4318-4902msec WRITE: bw=5849KiB/s (5989kB/s), 1044KiB/s-2138KiB/s (1070kB/s-2189kB/s), io=28.0MiB (29.4MB), run=4318-4902msec 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=144868: Thu Aug 27 13:33:19 2026 read: IOPS=0, BW=2745KiB/s (2811kB/s)(12.0MiB/4477msec) clat (msec): min=1335, max=1534, avg=1465.66, stdev=112.99 lat (msec): min=1335, max=1534, avg=1465.66, stdev=112.99 clat percentiles (msec): | 1.00th=[ 1334], 5.00th=[ 1334], 10.00th=[ 1334], 20.00th=[ 1334], | 30.00th=[ 1334], 40.00th=[ 1536], 50.00th=[ 1536], 60.00th=[ 1536], | 70.00th=[ 1536], 80.00th=[ 1536], 90.00th=[ 1536], 95.00th=[ 1536], | 99.00th=[ 1536], 99.50th=[ 1536], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8094, max= 8175, per=100.00%, avg=8134.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=100.00% cpu : usr=0.02%, sys=6.64%, ctx=205, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144870: Thu Aug 27 13:33:19 2026 read: IOPS=0, BW=829KiB/s (849kB/s)(4096KiB/4942msec) clat (nsec): min=1388.5M, max=1388.5M, avg=1388453964.00, stdev= 0.00 lat (nsec): min=1388.5M, max=1388.5M, avg=1388456224.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1385], 5.00th=[ 1385], 10.00th=[ 1385], 20.00th=[ 1385], | 30.00th=[ 1385], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] 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=1658KiB/s (1697kB/s)(8192KiB/4942msec); 0 zone resets clat (msec): min=502, max=2654, avg=1578.51, stdev=1521.97 lat (msec): min=596, max=2655, avg=1625.68, stdev=1455.69 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 502], 50.00th=[ 502], 60.00th=[ 2668], | 70.00th=[ 2668], 80.00th=[ 2668], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 8000, max= 8000, per=100.00%, avg=8000.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.77%, ctx=134, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144871: Thu Aug 27 13:33:19 2026 write: IOPS=0, BW=2192KiB/s (2245kB/s)(12.0MiB/5606msec); 0 zone resets clat (msec): min=1011, max=2309, avg=1752.67, stdev=668.37 lat (msec): min=1011, max=2309, avg=1754.88, stdev=669.14 clat percentiles (msec): | 1.00th=[ 1011], 5.00th=[ 1011], 10.00th=[ 1011], 20.00th=[ 1011], | 30.00th=[ 1011], 40.00th=[ 1938], 50.00th=[ 1938], 60.00th=[ 1938], | 70.00th=[ 2299], 80.00th=[ 2299], 90.00th=[ 2299], 95.00th=[ 2299], | 99.00th=[ 2299], 99.50th=[ 2299], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7670, max= 8047, per=100.00%, avg=7858.50, stdev=266.58, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=1.80%, ctx=69, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144872: Thu Aug 27 13:33:19 2026 write: IOPS=0, BW=3152KiB/s (3228kB/s)(12.0MiB/3898msec); 0 zone resets clat (msec): min=745, max=2078, avg=1281.97, stdev=703.31 lat (msec): min=745, max=2078, avg=1282.91, stdev=703.08 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 1020], 50.00th=[ 1020], 60.00th=[ 1020], | 70.00th=[ 2072], 80.00th=[ 2072], 90.00th=[ 2072], 95.00th=[ 2072], | 99.00th=[ 2072], 99.50th=[ 2072], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 7757, max= 8159, per=100.00%, avg=7958.00, stdev=284.26, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.03%, ctx=43, 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 Run status group 0 (all jobs): READ: bw=3315KiB/s (3395kB/s), 829KiB/s-2745KiB/s (849kB/s-2811kB/s), io=16.0MiB (16.8MB), run=4477-4942msec WRITE: bw=5845KiB/s (5985kB/s), 1658KiB/s-3152KiB/s (1697kB/s-3228kB/s), io=32.0MiB (33.6MB), run=3898-5606msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144873: Thu Aug 27 13:33:20 2026 read: IOPS=0, BW=2237KiB/s (2290kB/s)(12.0MiB/5494msec) clat (msec): min=657, max=2745, avg=1815.35, stdev=1062.34 lat (msec): min=657, max=2745, avg=1815.36, stdev=1062.34 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 2039], 50.00th=[ 2039], 60.00th=[ 2039], | 70.00th=[ 2735], 80.00th=[ 2735], 90.00th=[ 2735], 95.00th=[ 2735], | 99.00th=[ 2735], 99.50th=[ 2735], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 8143, max= 8175, per=100.00%, avg=8159.00, stdev=22.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, >=2000=66.67% cpu : usr=0.38%, sys=3.26%, ctx=57, 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=144874: Thu Aug 27 13:33:20 2026 read: IOPS=0, BW=679KiB/s (696kB/s)(4096KiB/6028msec) clat (nsec): min=2673.1M, max=2673.1M, avg=2673116914.00, stdev= 0.00 lat (nsec): min=2673.1M, max=2673.1M, avg=2673119628.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2668], 5.00th=[ 2668], 10.00th=[ 2668], 20.00th=[ 2668], | 30.00th=[ 2668], 40.00th=[ 2668], 50.00th=[ 2668], 60.00th=[ 2668], | 70.00th=[ 2668], 80.00th=[ 2668], 90.00th=[ 2668], 95.00th=[ 2668], | 99.00th=[ 2668], 99.50th=[ 2668], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 7846, max= 7846, per=100.00%, avg=7846.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1359KiB/s (1392kB/s)(8192KiB/6028msec); 0 zone resets clat (msec): min=1530, max=1731, avg=1631.33, stdev=142.32 lat (msec): min=1533, max=1732, avg=1632.79, stdev=140.68 clat percentiles (msec): | 1.00th=[ 1536], 5.00th=[ 1536], 10.00th=[ 1536], 20.00th=[ 1536], | 30.00th=[ 1536], 40.00th=[ 1536], 50.00th=[ 1536], 60.00th=[ 1737], | 70.00th=[ 1737], 80.00th=[ 1737], 90.00th=[ 1737], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=2.80%, ctx=49, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144875: Thu Aug 27 13:33:20 2026 write: IOPS=0, BW=1995KiB/s (2043kB/s)(12.0MiB/6160msec); 0 zone resets clat (msec): min=688, max=2918, avg=2017.82, stdev=1175.15 lat (msec): min=691, max=2919, avg=2019.18, stdev=1173.76 clat percentiles (msec): | 1.00th=[ 693], 5.00th=[ 693], 10.00th=[ 693], 20.00th=[ 693], | 30.00th=[ 693], 40.00th=[ 2433], 50.00th=[ 2433], 60.00th=[ 2433], | 70.00th=[ 2903], 80.00th=[ 2903], 90.00th=[ 2903], 95.00th=[ 2903], | 99.00th=[ 2903], 99.50th=[ 2903], 99.90th=[ 2903], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 7757, max= 8000, per=100.00%, avg=7878.50, stdev=171.83, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.53%, ctx=43, 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=144876: Thu Aug 27 13:33:20 2026 write: IOPS=0, BW=2917KiB/s (2987kB/s)(12.0MiB/4212msec); 0 zone resets clat (msec): min=866, max=1883, avg=1356.80, stdev=509.12 lat (msec): min=868, max=1883, avg=1358.50, stdev=508.20 clat percentiles (msec): | 1.00th=[ 869], 5.00th=[ 869], 10.00th=[ 869], 20.00th=[ 869], | 30.00th=[ 869], 40.00th=[ 1318], 50.00th=[ 1318], 60.00th=[ 1318], | 70.00th=[ 1888], 80.00th=[ 1888], 90.00th=[ 1888], 95.00th=[ 1888], | 99.00th=[ 1888], 99.50th=[ 1888], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 7861, max= 8192, per=100.00%, avg=8026.50, stdev=234.05, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.52%, ctx=50, 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=2718KiB/s (2783kB/s), 679KiB/s-2237KiB/s (696kB/s-2290kB/s), io=16.0MiB (16.8MB), run=5494-6028msec WRITE: bw=5319KiB/s (5447kB/s), 1359KiB/s-2917KiB/s (1392kB/s-2987kB/s), io=32.0MiB (33.6MB), run=4212-6160msec