== sanity test 398b: DIO and buffer IO race ============== 10:57:18 (1786373838) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 3.02566 s, 16.6 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=183281: Mon Aug 10 10:58:26 2026 read: IOPS=25, BW=101KiB/s (104kB/s)(5992KiB/59057msec) clat (usec): min=30, max=730137, avg=21324.04, stdev=21647.95 lat (usec): min=31, max=730138, avg=21324.91, stdev=21647.98 clat percentiles (usec): | 1.00th=[ 111], 5.00th=[ 7373], 10.00th=[ 9241], 20.00th=[ 11600], | 30.00th=[ 14091], 40.00th=[ 16450], 50.00th=[ 18744], 60.00th=[ 21365], | 70.00th=[ 24511], 80.00th=[ 28705], 90.00th=[ 35390], 95.00th=[ 41157], | 99.00th=[ 59507], 99.50th=[ 73925], 99.90th=[ 88605], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 31, max= 198, per=24.80%, avg=100.68, stdev=27.15, samples=117 iops : min= 7, max= 49, avg=24.77, stdev= 6.82, samples=117 write: IOPS=26, BW=107KiB/s (109kB/s)(6296KiB/59057msec); 0 zone resets clat (usec): min=799, max=108360, avg=17095.24, stdev=13324.39 lat (usec): min=799, max=108361, avg=17098.86, stdev=13324.97 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 2671], 10.00th=[ 3261], 20.00th=[ 5211], | 30.00th=[ 8356], 40.00th=[ 11076], 50.00th=[ 13829], 60.00th=[ 17433], | 70.00th=[ 21365], 80.00th=[ 27132], 90.00th=[ 35390], 95.00th=[ 42730], | 99.00th=[ 56361], 99.50th=[ 63701], 99.90th=[102237], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 40, max= 216, per=24.87%, avg=105.69, stdev=34.82, samples=117 iops : min= 10, max= 54, avg=26.03, stdev= 8.76, samples=117 lat (usec) : 50=0.03%, 100=0.29%, 250=0.72%, 500=0.16%, 1000=0.16% lat (msec) : 2=1.01%, 4=6.61%, 10=15.56%, 20=36.95%, 50=36.30% lat (msec) : 100=2.12%, 250=0.07%, 750=0.03% cpu : usr=0.08%, sys=24.09%, ctx=9985, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183282: Mon Aug 10 10:58:26 2026 read: IOPS=25, BW=104KiB/s (106kB/s)(5940KiB/57325msec) clat (usec): min=51, max=90858, avg=20554.41, stdev=10752.92 lat (usec): min=52, max=90858, avg=20556.06, stdev=10751.88 clat percentiles (usec): | 1.00th=[ 125], 5.00th=[ 7767], 10.00th=[ 9896], 20.00th=[12125], | 30.00th=[13960], 40.00th=[16057], 50.00th=[18482], 60.00th=[21103], | 70.00th=[24249], 80.00th=[28181], 90.00th=[34341], 95.00th=[40109], | 99.00th=[56886], 99.50th=[59507], 99.90th=[74974], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 24, max= 176, per=25.48%, avg=103.43, stdev=26.89, samples=114 iops : min= 6, max= 44, avg=25.46, stdev= 6.73, samples=114 write: IOPS=27, BW=111KiB/s (113kB/s)(6348KiB/57325msec); 0 zone resets clat (usec): min=741, max=713018, avg=16762.90, stdev=21833.65 lat (usec): min=741, max=713018, avg=16763.89, stdev=21833.68 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 2606], 10.00th=[ 3163], 20.00th=[ 4424], | 30.00th=[ 7046], 40.00th=[ 10552], 50.00th=[ 13435], 60.00th=[ 16581], | 70.00th=[ 20317], 80.00th=[ 26084], 90.00th=[ 34341], 95.00th=[ 41681], | 99.00th=[ 56886], 99.50th=[ 62653], 99.90th=[115868], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 40, max= 263, per=26.01%, avg=110.54, stdev=35.22, samples=114 iops : min= 10, max= 65, avg=27.24, stdev= 8.83, samples=114 lat (usec) : 100=0.36%, 250=0.65%, 500=0.03%, 750=0.03%, 1000=0.13% lat (msec) : 2=1.14%, 4=7.98%, 10=14.62%, 20=37.86%, 50=35.45% lat (msec) : 100=1.66%, 250=0.07%, 750=0.03% cpu : usr=0.09%, sys=24.56%, ctx=9550, 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=183283: Mon Aug 10 10:58:26 2026 read: IOPS=25, BW=103KiB/s (106kB/s)(6028KiB/58429msec) clat (usec): min=72, max=730909, avg=21008.99, stdev=21284.48 lat (usec): min=72, max=730910, avg=21009.91, stdev=21284.46 clat percentiles (usec): | 1.00th=[ 153], 5.00th=[ 7767], 10.00th=[ 9765], 20.00th=[ 11863], | 30.00th=[ 13829], 40.00th=[ 16319], 50.00th=[ 18744], 60.00th=[ 21103], | 70.00th=[ 24249], 80.00th=[ 27919], 90.00th=[ 33817], 95.00th=[ 41681], | 99.00th=[ 53216], 99.50th=[ 68682], 99.90th=[ 94897], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 32, max= 207, per=25.29%, avg=102.67, stdev=30.94, samples=116 iops : min= 8, max= 51, avg=25.27, stdev= 7.79, samples=116 write: IOPS=26, BW=107KiB/s (110kB/s)(6260KiB/58429msec); 0 zone resets clat (usec): min=774, max=119967, avg=16973.05, stdev=13207.76 lat (usec): min=775, max=119968, avg=16974.08, stdev=13207.79 clat percentiles (usec): | 1.00th=[ 1336], 5.00th=[ 2704], 10.00th=[ 3359], 20.00th=[ 4948], | 30.00th=[ 8029], 40.00th=[ 11207], 50.00th=[ 13960], 60.00th=[ 16909], | 70.00th=[ 21103], 80.00th=[ 26870], 90.00th=[ 35390], 95.00th=[ 42730], | 99.00th=[ 57934], 99.50th=[ 63177], 99.90th=[ 80217], 99.95th=[120062], | 99.99th=[120062] bw ( KiB/s): min= 24, max= 216, per=25.02%, avg=106.35, stdev=31.26, samples=116 iops : min= 6, max= 54, avg=26.19, stdev= 7.83, samples=116 lat (usec) : 100=0.29%, 250=0.68%, 500=0.03%, 1000=0.13% lat (msec) : 2=1.01%, 4=6.18%, 10=15.46%, 20=37.53%, 50=36.75% lat (msec) : 100=1.86%, 250=0.03%, 750=0.03% cpu : usr=0.10%, sys=24.06%, ctx=9895, 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=183284: Mon Aug 10 10:58:26 2026 read: IOPS=25, BW=104KiB/s (106kB/s)(6052KiB/58344msec) clat (usec): min=44, max=108514, avg=20932.27, stdev=11042.25 lat (usec): min=45, max=108515, avg=20933.07, stdev=11042.33 clat percentiles (usec): | 1.00th=[ 105], 5.00th=[ 7898], 10.00th=[ 9503], 20.00th=[ 12256], | 30.00th=[ 14353], 40.00th=[ 16909], 50.00th=[ 19006], 60.00th=[ 21365], | 70.00th=[ 24511], 80.00th=[ 28967], 90.00th=[ 34866], 95.00th=[ 39584], | 99.00th=[ 56886], 99.50th=[ 68682], 99.90th=[ 96994], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 24, max= 184, per=25.46%, avg=103.37, stdev=29.52, samples=116 iops : min= 6, max= 46, avg=25.44, stdev= 7.41, samples=116 write: IOPS=26, BW=107KiB/s (109kB/s)(6236KiB/58344msec); 0 zone resets clat (usec): min=662, max=722359, avg=16979.73, stdev=22000.99 lat (usec): min=662, max=722360, avg=16981.48, stdev=22000.83 clat percentiles (usec): | 1.00th=[ 1385], 5.00th=[ 2671], 10.00th=[ 3326], 20.00th=[ 4752], | 30.00th=[ 7439], 40.00th=[ 11207], 50.00th=[ 13829], 60.00th=[ 16712], | 70.00th=[ 20317], 80.00th=[ 25822], 90.00th=[ 34866], 95.00th=[ 41681], | 99.00th=[ 56886], 99.50th=[ 64226], 99.90th=[ 85459], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 32, max= 200, per=25.05%, avg=106.45, stdev=34.72, samples=116 iops : min= 8, max= 50, avg=26.22, stdev= 8.71, samples=116 lat (usec) : 50=0.07%, 100=0.36%, 250=0.68%, 750=0.03%, 1000=0.13% lat (msec) : 2=1.14%, 4=6.80%, 10=15.20%, 20=37.34%, 50=36.30% lat (msec) : 100=1.89%, 250=0.03%, 750=0.03% cpu : usr=0.09%, sys=24.12%, ctx=9789, 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=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=407KiB/s (416kB/s), 101KiB/s-104KiB/s (104kB/s-106kB/s), io=23.4MiB (24.6MB), run=57325-59057msec WRITE: bw=426KiB/s (436kB/s), 107KiB/s-111KiB/s (109kB/s-113kB/s), io=24.6MiB (25.7MB), run=57325-59057msec rand-rw: (groupid=0, jobs=1): err= 0: pid=183286: Mon Aug 10 10:58:35 2026 read: IOPS=22, BW=88.2KiB/s (90.3kB/s)(5992KiB/67971msec) clat (msec): min=2, max=747, avg=19.76, stdev=23.98 lat (msec): min=2, max=747, avg=19.76, stdev=23.98 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 23], 80.00th=[ 29], 90.00th=[ 41], 95.00th=[ 48], | 99.00th=[ 68], 99.50th=[ 83], 99.90th=[ 134], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 24, max= 296, per=24.89%, avg=87.85, stdev=59.35, samples=134 iops : min= 6, max= 74, avg=21.54, stdev=14.95, samples=134 write: IOPS=23, BW=92.6KiB/s (94.8kB/s)(6296KiB/67971msec); 0 zone resets clat (msec): min=4, max=156, avg=24.35, stdev=16.92 lat (msec): min=4, max=156, avg=24.35, stdev=16.92 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 38], 90.00th=[ 49], 95.00th=[ 56], | 99.00th=[ 74], 99.50th=[ 79], 99.90th=[ 120], 99.95th=[ 157], | 99.99th=[ 157] bw ( KiB/s): min= 31, max= 272, per=24.95%, avg=92.08, stdev=58.00, samples=134 iops : min= 7, max= 68, avg=22.60, stdev=14.65, samples=134 lat (msec) : 4=0.65%, 10=24.84%, 20=32.32%, 50=35.71%, 100=6.22% lat (msec) : 250=0.23%, 750=0.03% cpu : usr=0.09%, sys=13.09%, ctx=6599, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183287: Mon Aug 10 10:58:35 2026 read: IOPS=21, BW=87.5KiB/s (89.6kB/s)(5940KiB/67913msec) clat (msec): min=3, max=740, avg=19.79, stdev=24.23 lat (msec): min=3, max=740, avg=19.79, stdev=24.23 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 29], 90.00th=[ 41], 95.00th=[ 52], | 99.00th=[ 77], 99.50th=[ 82], 99.90th=[ 138], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 287, per=24.75%, avg=87.37, stdev=58.85, samples=134 iops : min= 1, max= 71, avg=21.42, stdev=14.84, samples=134 write: IOPS=23, BW=93.5KiB/s (95.7kB/s)(6348KiB/67913msec); 0 zone resets clat (msec): min=4, max=136, avg=24.25, stdev=17.06 lat (msec): min=4, max=136, avg=24.25, stdev=17.06 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 36], 90.00th=[ 47], 95.00th=[ 56], | 99.00th=[ 83], 99.50th=[ 97], 99.90th=[ 131], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 31, max= 296, per=25.23%, avg=93.10, stdev=59.89, samples=134 iops : min= 7, max= 74, avg=22.85, stdev=15.11, samples=134 lat (msec) : 4=0.65%, 10=25.68%, 20=31.54%, 50=35.58%, 100=6.22% lat (msec) : 250=0.29%, 750=0.03% cpu : usr=0.08%, sys=13.14%, ctx=6568, 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=183288: Mon Aug 10 10:58:35 2026 read: IOPS=22, BW=89.5KiB/s (91.6kB/s)(6028KiB/67360msec) clat (msec): min=2, max=134, avg=18.88, stdev=14.18 lat (msec): min=2, max=134, avg=18.88, stdev=14.18 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 5], 10.00th=[ 6], 20.00th=[ 8], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 28], 90.00th=[ 39], 95.00th=[ 49], | 99.00th=[ 65], 99.50th=[ 75], 99.90th=[ 84], 99.95th=[ 134], | 99.99th=[ 134] bw ( KiB/s): min= 23, max= 336, per=25.41%, avg=89.71, stdev=59.16, samples=133 iops : min= 5, max= 84, avg=22.00, stdev=14.92, samples=133 write: IOPS=23, BW=92.9KiB/s (95.2kB/s)(6260KiB/67360msec); 0 zone resets clat (msec): min=4, max=745, avg=24.83, stdev=24.89 lat (msec): min=4, max=745, avg=24.83, stdev=24.89 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 37], 90.00th=[ 47], 95.00th=[ 56], | 99.00th=[ 78], 99.50th=[ 99], 99.90th=[ 159], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 23, max= 288, per=25.19%, avg=92.95, stdev=55.99, samples=133 iops : min= 5, max= 72, avg=22.81, stdev=14.13, samples=133 lat (msec) : 4=0.68%, 10=24.32%, 20=33.69%, 50=35.19%, 100=5.86% lat (msec) : 250=0.23%, 750=0.03% cpu : usr=0.10%, sys=13.31%, ctx=6724, 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=183289: Mon Aug 10 10:58:35 2026 read: IOPS=22, BW=89.4KiB/s (91.5kB/s)(6052KiB/67710msec) clat (usec): min=2811, max=93135, avg=18625.47, stdev=13971.39 lat (usec): min=2811, max=93136, avg=18626.13, stdev=13971.46 clat percentiles (usec): | 1.00th=[ 3949], 5.00th=[ 4817], 10.00th=[ 5604], 20.00th=[ 7373], | 30.00th=[ 9896], 40.00th=[12256], 50.00th=[14484], 60.00th=[17433], | 70.00th=[21365], 80.00th=[27132], 90.00th=[38011], 95.00th=[47973], | 99.00th=[68682], 99.50th=[77071], 99.90th=[84411], 99.95th=[92799], | 99.99th=[92799] bw ( KiB/s): min= 23, max= 328, per=25.14%, avg=88.74, stdev=57.29, samples=133 iops : min= 5, max= 82, avg=21.76, stdev=14.46, samples=133 write: IOPS=23, BW=92.1KiB/s (94.3kB/s)(6236KiB/67710msec); 0 zone resets clat (msec): min=5, max=748, avg=25.33, stdev=25.32 lat (msec): min=5, max=748, avg=25.33, stdev=25.32 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 38], 90.00th=[ 48], 95.00th=[ 57], | 99.00th=[ 83], 99.50th=[ 104], 99.90th=[ 150], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 31, max= 311, per=24.88%, avg=91.81, stdev=56.54, samples=133 iops : min= 7, max= 77, avg=22.53, stdev=14.26, samples=133 lat (msec) : 4=0.62%, 10=23.83%, 20=33.69%, 50=35.64%, 100=5.92% lat (msec) : 250=0.26%, 750=0.03% cpu : usr=0.09%, sys=13.17%, ctx=6752, 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=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=353KiB/s (362kB/s), 87.5KiB/s-89.5KiB/s (89.6kB/s-91.6kB/s), io=23.4MiB (24.6MB), run=67360-67971msec WRITE: bw=370KiB/s (379kB/s), 92.1KiB/s-93.5KiB/s (94.3kB/s-95.7kB/s), io=24.6MiB (25.7MB), run=67360-67971msec 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=183319: Mon Aug 10 10:58:56 2026 read: IOPS=25, BW=401KiB/s (411kB/s)(5920KiB/14752msec) clat (usec): min=64, max=59995, avg=20285.97, stdev=10339.68 lat (usec): min=64, max=59996, avg=20286.69, stdev=10339.73 clat percentiles (usec): | 1.00th=[ 80], 5.00th=[ 225], 10.00th=[ 9896], 20.00th=[12649], | 30.00th=[14484], 40.00th=[16712], 50.00th=[18482], 60.00th=[21103], | 70.00th=[24249], 80.00th=[27919], 90.00th=[33817], 95.00th=[39060], | 99.00th=[55313], 99.50th=[57410], 99.90th=[60031], 99.95th=[60031], | 99.99th=[60031] bw ( KiB/s): min= 286, max= 640, per=25.25%, avg=402.55, stdev=95.88, samples=29 iops : min= 17, max= 40, avg=24.79, stdev= 6.06, samples=29 write: IOPS=26, BW=432KiB/s (442kB/s)(6368KiB/14752msec); 0 zone resets clat (usec): min=1243, max=83229, avg=18054.29, stdev=12235.67 lat (usec): min=1245, max=83231, avg=18055.60, stdev=12235.71 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 4146], 10.00th=[ 5145], 20.00th=[ 6783], | 30.00th=[ 9765], 40.00th=[13173], 50.00th=[16188], 60.00th=[19006], | 70.00th=[21890], 80.00th=[26608], 90.00th=[33162], 95.00th=[42730], | 99.00th=[57410], 99.50th=[64750], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 286, max= 640, per=25.78%, avg=432.41, stdev=102.37, samples=29 iops : min= 17, max= 40, avg=26.66, stdev= 6.48, samples=29 lat (usec) : 100=1.30%, 250=1.30%, 1000=0.13% lat (msec) : 2=0.78%, 4=1.17%, 10=15.89%, 20=39.45%, 50=38.15% lat (msec) : 100=1.82% cpu : usr=0.11%, sys=27.49%, ctx=3005, 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=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=183320: Mon Aug 10 10:58:56 2026 read: IOPS=23, BW=382KiB/s (392kB/s)(5744KiB/15023msec) clat (usec): min=67, max=75765, avg=21046.78, stdev=11182.57 lat (usec): min=68, max=75766, avg=21047.66, stdev=11182.56 clat percentiles (usec): | 1.00th=[ 94], 5.00th=[ 289], 10.00th=[10028], 20.00th=[12649], | 30.00th=[15401], 40.00th=[17695], 50.00th=[20055], 60.00th=[21890], | 70.00th=[24511], 80.00th=[27657], 90.00th=[34866], 95.00th=[40109], | 99.00th=[65799], 99.50th=[71828], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 224, max= 669, per=23.77%, avg=378.97, stdev=93.43, samples=29 iops : min= 14, max= 41, avg=23.31, stdev= 5.93, samples=29 write: IOPS=27, BW=436KiB/s (446kB/s)(6544KiB/15023msec); 0 zone resets clat (usec): min=1766, max=77944, avg=18125.91, stdev=12579.78 lat (usec): min=1767, max=77946, avg=18147.91, stdev=12574.09 clat percentiles (usec): | 1.00th=[ 2769], 5.00th=[ 4490], 10.00th=[ 4948], 20.00th=[ 7242], | 30.00th=[10159], 40.00th=[12256], 50.00th=[14746], 60.00th=[17695], | 70.00th=[21627], 80.00th=[27919], 90.00th=[36963], 95.00th=[40633], | 99.00th=[57410], 99.50th=[61080], 99.90th=[78119], 99.95th=[78119], | 99.99th=[78119] bw ( KiB/s): min= 224, max= 608, per=25.46%, avg=427.03, stdev=96.86, samples=29 iops : min= 14, max= 38, avg=26.31, stdev= 6.07, samples=29 lat (usec) : 100=0.52%, 250=1.69%, 500=0.13% lat (msec) : 2=0.26%, 4=1.30%, 10=16.02%, 20=38.02%, 50=39.58% lat (msec) : 100=2.47% cpu : usr=0.09%, sys=28.41%, ctx=3050, 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=183321: Mon Aug 10 10:58:56 2026 read: IOPS=26, BW=419KiB/s (429kB/s)(6256KiB/14920msec) clat (usec): min=47, max=75598, avg=20224.95, stdev=11566.07 lat (usec): min=48, max=75599, avg=20225.84, stdev=11566.11 clat percentiles (usec): | 1.00th=[ 82], 5.00th=[ 167], 10.00th=[ 9241], 20.00th=[12125], | 30.00th=[14615], 40.00th=[16712], 50.00th=[19006], 60.00th=[20841], | 70.00th=[23987], 80.00th=[26870], 90.00th=[34341], 95.00th=[43779], | 99.00th=[56886], 99.50th=[68682], 99.90th=[76022], 99.95th=[76022], | 99.99th=[76022] bw ( KiB/s): min= 309, max= 672, per=26.50%, avg=422.41, stdev=84.22, samples=29 iops : min= 19, max= 42, avg=26.03, stdev= 5.28, samples=29 write: IOPS=25, BW=404KiB/s (414kB/s)(6032KiB/14920msec); 0 zone resets clat (usec): min=1404, max=81393, avg=18438.90, stdev=12744.51 lat (usec): min=1405, max=81394, avg=18440.58, stdev=12744.62 clat percentiles (usec): | 1.00th=[ 3326], 5.00th=[ 4621], 10.00th=[ 5014], 20.00th=[ 7111], | 30.00th=[10028], 40.00th=[12780], 50.00th=[15795], 60.00th=[19530], | 70.00th=[22938], 80.00th=[27395], 90.00th=[32900], 95.00th=[41681], | 99.00th=[70779], 99.50th=[77071], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 160, max= 608, per=23.95%, avg=401.69, stdev=114.01, samples=29 iops : min= 10, max= 38, avg=24.72, stdev= 7.23, samples=29 lat (usec) : 50=0.13%, 100=1.04%, 250=2.34%, 500=0.13% lat (msec) : 2=0.13%, 4=0.91%, 10=15.89%, 20=38.15%, 50=38.54% lat (msec) : 100=2.73% cpu : usr=0.11%, sys=27.38%, ctx=3041, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183322: Mon Aug 10 10:58:56 2026 read: IOPS=25, BW=411KiB/s (421kB/s)(6032KiB/14685msec) clat (usec): min=43, max=67169, avg=20293.88, stdev=11807.01 lat (usec): min=44, max=67170, avg=20294.64, stdev=11807.05 clat percentiles (usec): | 1.00th=[ 86], 5.00th=[ 130], 10.00th=[ 8848], 20.00th=[11600], | 30.00th=[14484], 40.00th=[17171], 50.00th=[19006], 60.00th=[21890], | 70.00th=[23987], 80.00th=[28181], 90.00th=[33817], 95.00th=[42206], | 99.00th=[58459], 99.50th=[65274], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 192, max= 608, per=25.70%, avg=409.62, stdev=93.99, samples=29 iops : min= 12, max= 38, avg=25.24, stdev= 5.90, samples=29 write: IOPS=26, BW=426KiB/s (436kB/s)(6256KiB/14685msec); 0 zone resets clat (usec): min=1215, max=80090, avg=17933.37, stdev=13338.73 lat (usec): min=1216, max=80091, avg=17934.73, stdev=13338.83 clat percentiles (usec): | 1.00th=[ 3163], 5.00th=[ 4424], 10.00th=[ 5014], 20.00th=[ 6783], | 30.00th=[ 9634], 40.00th=[11994], 50.00th=[14353], 60.00th=[17171], | 70.00th=[21365], 80.00th=[26346], 90.00th=[36439], 95.00th=[45876], | 99.00th=[68682], 99.50th=[77071], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 160, max= 670, per=25.52%, avg=427.93, stdev=121.11, samples=29 iops : min= 10, max= 41, avg=26.38, stdev= 7.49, samples=29 lat (usec) : 50=0.13%, 100=1.04%, 250=2.60%, 500=0.26% lat (msec) : 2=0.26%, 4=1.30%, 10=16.67%, 20=39.06%, 50=35.81% lat (msec) : 100=2.86% cpu : usr=0.07%, sys=27.85%, ctx=3027, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1594KiB/s (1633kB/s), 382KiB/s-419KiB/s (392kB/s-429kB/s), io=23.4MiB (24.5MB), run=14685-15023msec WRITE: bw=1677KiB/s (1718kB/s), 404KiB/s-436KiB/s (414kB/s-446kB/s), io=24.6MiB (25.8MB), run=14685-15023msec rand-rw: (groupid=0, jobs=1): err= 0: pid=183324: Mon Aug 10 10:58:58 2026 read: IOPS=21, BW=348KiB/s (356kB/s)(5920KiB/17009msec) clat (usec): min=4009, max=83430, avg=19878.62, stdev=15127.33 lat (usec): min=4010, max=83431, avg=19879.38, stdev=15127.36 clat percentiles (usec): | 1.00th=[ 4490], 5.00th=[ 5735], 10.00th=[ 6456], 20.00th=[ 7963], | 30.00th=[ 9634], 40.00th=[11600], 50.00th=[13960], 60.00th=[17695], | 70.00th=[22938], 80.00th=[29492], 90.00th=[42730], 95.00th=[52691], | 99.00th=[67634], 99.50th=[82314], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 160, max= 958, per=23.87%, avg=335.85, stdev=183.89, samples=33 iops : min= 10, max= 59, avg=20.64, stdev=11.47, samples=33 write: IOPS=23, BW=374KiB/s (383kB/s)(6368KiB/17009msec); 0 zone resets clat (msec): min=6, max=105, avg=23.92, stdev=15.70 lat (msec): min=6, max=105, avg=23.92, stdev=15.70 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 35], 90.00th=[ 45], 95.00th=[ 55], | 99.00th=[ 81], 99.50th=[ 92], 99.90th=[ 106], 99.95th=[ 106], | 99.99th=[ 106] bw ( KiB/s): min= 160, max= 926, per=24.50%, avg=362.58, stdev=193.15, samples=33 iops : min= 10, max= 57, avg=22.33, stdev=12.00, samples=33 lat (msec) : 10=21.35%, 20=36.46%, 50=35.68%, 100=6.38%, 250=0.13% cpu : usr=0.11%, sys=13.85%, ctx=1764, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183325: Mon Aug 10 10:58:58 2026 read: IOPS=21, BW=337KiB/s (346kB/s)(5744KiB/17020msec) clat (usec): min=3864, max=81003, avg=19428.13, stdev=13912.71 lat (usec): min=3865, max=81004, avg=19429.00, stdev=13912.90 clat percentiles (usec): | 1.00th=[ 4555], 5.00th=[ 5735], 10.00th=[ 6849], 20.00th=[ 8455], | 30.00th=[10552], 40.00th=[12518], 50.00th=[14877], 60.00th=[17433], | 70.00th=[21365], 80.00th=[30016], 90.00th=[41157], 95.00th=[47449], | 99.00th=[67634], 99.50th=[80217], 99.90th=[81265], 99.95th=[81265], | 99.99th=[81265] bw ( KiB/s): min= 127, max= 862, per=23.59%, avg=331.94, stdev=166.28, samples=33 iops : min= 7, max= 53, avg=20.39, stdev=10.37, samples=33 write: IOPS=24, BW=384KiB/s (394kB/s)(6544KiB/17020msec); 0 zone resets clat (usec): min=5290, max=97435, avg=24287.19, stdev=15492.38 lat (usec): min=5292, max=97436, avg=24288.90, stdev=15492.40 clat percentiles (usec): | 1.00th=[ 6652], 5.00th=[ 8094], 10.00th=[ 9241], 20.00th=[10945], | 30.00th=[13042], 40.00th=[15664], 50.00th=[19530], 60.00th=[24773], | 70.00th=[30016], 80.00th=[35390], 90.00th=[47449], 95.00th=[55313], | 99.00th=[66847], 99.50th=[78119], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 159, max= 1021, per=25.02%, avg=370.33, stdev=193.49, samples=33 iops : min= 9, max= 63, avg=22.82, stdev=12.04, samples=33 lat (msec) : 4=0.26%, 10=19.79%, 20=38.15%, 50=35.81%, 100=5.99% cpu : usr=0.09%, sys=13.95%, ctx=1748, 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=183326: Mon Aug 10 10:58:58 2026 read: IOPS=23, BW=368KiB/s (377kB/s)(6256KiB/16981msec) clat (usec): min=4276, max=82099, avg=19124.43, stdev=13761.59 lat (usec): min=4277, max=82100, avg=19125.28, stdev=13761.60 clat percentiles (usec): | 1.00th=[ 4883], 5.00th=[ 5997], 10.00th=[ 6849], 20.00th=[ 8356], | 30.00th=[10290], 40.00th=[12518], 50.00th=[14222], 60.00th=[17171], | 70.00th=[22152], 80.00th=[28443], 90.00th=[38536], 95.00th=[45876], | 99.00th=[68682], 99.50th=[81265], 99.90th=[82314], 99.95th=[82314], | 99.99th=[82314] bw ( KiB/s): min= 159, max= 1181, per=25.90%, avg=364.45, stdev=212.21, samples=33 iops : min= 9, max= 73, avg=22.45, stdev=13.18, samples=33 write: IOPS=22, BW=355KiB/s (364kB/s)(6032KiB/16981msec); 0 zone resets clat (msec): min=6, max=115, avg=25.04, stdev=16.22 lat (msec): min=6, max=115, avg=25.04, stdev=16.22 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 22], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 37], 90.00th=[ 46], 95.00th=[ 56], | 99.00th=[ 78], 99.50th=[ 95], 99.90th=[ 115], 99.95th=[ 115], | 99.99th=[ 115] bw ( KiB/s): min= 127, max= 896, per=23.09%, avg=341.67, stdev=163.18, samples=33 iops : min= 7, max= 56, avg=21.00, stdev=10.22, samples=33 lat (msec) : 10=21.61%, 20=35.03%, 50=37.37%, 100=5.86%, 250=0.13% cpu : usr=0.09%, sys=13.93%, ctx=1745, 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=183327: Mon Aug 10 10:58:58 2026 read: IOPS=22, BW=357KiB/s (366kB/s)(6032KiB/16885msec) clat (usec): min=3538, max=89044, avg=18783.13, stdev=14045.69 lat (usec): min=3538, max=89046, avg=18783.94, stdev=14045.71 clat percentiles (usec): | 1.00th=[ 4686], 5.00th=[ 5866], 10.00th=[ 6456], 20.00th=[ 7898], | 30.00th=[ 9503], 40.00th=[12125], 50.00th=[14091], 60.00th=[17433], | 70.00th=[20841], 80.00th=[26346], 90.00th=[40109], 95.00th=[50070], | 99.00th=[67634], 99.50th=[86508], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 160, max= 958, per=24.88%, avg=350.06, stdev=201.38, samples=33 iops : min= 10, max= 59, avg=21.55, stdev=12.55, samples=33 write: IOPS=23, BW=371KiB/s (379kB/s)(6256KiB/16885msec); 0 zone resets clat (msec): min=6, max=116, avg=24.79, stdev=15.51 lat (msec): min=6, max=116, avg=24.79, stdev=15.51 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 38], 90.00th=[ 47], 95.00th=[ 52], | 99.00th=[ 77], 99.50th=[ 92], 99.90th=[ 117], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 192, max= 990, per=24.80%, avg=366.97, stdev=182.79, samples=33 iops : min= 12, max= 61, avg=22.61, stdev=11.36, samples=33 lat (msec) : 4=0.26%, 10=21.88%, 20=35.81%, 50=35.81%, 100=6.12% lat (msec) : 250=0.13% cpu : usr=0.06%, sys=14.00%, ctx=1802, 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=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=1407KiB/s (1441kB/s), 337KiB/s-368KiB/s (346kB/s-377kB/s), io=23.4MiB (24.5MB), run=16885-17020msec WRITE: bw=1481KiB/s (1516kB/s), 355KiB/s-384KiB/s (364kB/s-394kB/s), io=24.6MiB (25.8MB), run=16885-17020msec 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=183334: Mon Aug 10 10:59:07 2026 read: IOPS=2, BW=2706KiB/s (2771kB/s)(7168KiB/2649msec) clat (msec): min=142, max=348, avg=216.66, stdev=73.32 lat (msec): min=142, max=348, avg=216.66, stdev=73.32 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 161], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 182], 60.00th=[ 243], | 70.00th=[ 243], 80.00th=[ 268], 90.00th=[ 351], 95.00th=[ 351], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 1965, max= 5094, per=74.31%, avg=3718.33, stdev=1598.32, samples=3 iops : min= 1, max= 4, avg= 3.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1933KiB/s (1979kB/s)(5120KiB/2649msec); 0 zone resets clat (msec): min=157, max=296, avg=215.14, stdev=60.38 lat (msec): min=157, max=296, avg=215.19, stdev=60.38 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 159], 10.00th=[ 159], 20.00th=[ 159], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 197], 60.00th=[ 197], | 70.00th=[ 259], 80.00th=[ 259], 90.00th=[ 296], 95.00th=[ 296], | 99.00th=[ 296], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 2043, max= 3930, per=35.93%, avg=2517.25, stdev=941.84, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (msec) : 250=66.67%, 500=33.33% cpu : usr=0.00%, sys=63.82%, ctx=734, 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=183335: Mon Aug 10 10:59:07 2026 read: IOPS=0, BW=500KiB/s (513kB/s)(2048KiB/4092msec) clat (msec): min=40, max=149, avg=95.18, stdev=76.71 lat (msec): min=40, max=149, avg=95.18, stdev=76.71 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 42], 10.00th=[ 42], 20.00th=[ 42], | 30.00th=[ 42], 40.00th=[ 42], 50.00th=[ 42], 60.00th=[ 150], | 70.00th=[ 150], 80.00th=[ 150], 90.00th=[ 150], 95.00th=[ 150], | 99.00th=[ 150], 99.50th=[ 150], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 1700, max= 2048, per=37.45%, avg=1874.00, stdev=246.07, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2502KiB/s (2563kB/s)(10.0MiB/4092msec); 0 zone resets clat (msec): min=170, max=872, avg=389.28, stdev=242.49 lat (msec): min=170, max=873, avg=389.34, stdev=242.49 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 257], | 30.00th=[ 262], 40.00th=[ 264], 50.00th=[ 284], 60.00th=[ 296], | 70.00th=[ 300], 80.00th=[ 388], 90.00th=[ 802], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 1965, max= 4096, per=38.46%, avg=2694.50, stdev=1046.25, samples=6 iops : min= 1, max= 4, avg= 2.00, stdev= 1.26, samples=6 lat (msec) : 50=8.33%, 250=16.67%, 500=58.33%, 1000=16.67% cpu : usr=0.00%, sys=46.47%, ctx=356, 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=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=183336: Mon Aug 10 10:59:07 2026 read: IOPS=1, BW=1716KiB/s (1757kB/s)(6144KiB/3581msec) clat (usec): min=734, max=247078, avg=144524.85, stdev=85520.19 lat (usec): min=735, max=247079, avg=144526.02, stdev=85520.23 clat percentiles (usec): | 1.00th=[ 734], 5.00th=[ 734], 10.00th=[ 734], 20.00th=[104334], | 30.00th=[104334], 40.00th=[152044], 50.00th=[152044], 60.00th=[158335], | 70.00th=[204473], 80.00th=[204473], 90.00th=[246416], 95.00th=[246416], | 99.00th=[246416], 99.50th=[246416], 99.90th=[246416], 99.95th=[246416], | 99.99th=[246416] bw ( KiB/s): min= 4096, max= 6071, per=100.00%, avg=5083.50, stdev=1396.54, samples=2 iops : min= 4, max= 5, avg= 4.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1716KiB/s (1757kB/s)(6144KiB/3581msec); 0 zone resets clat (msec): min=232, max=960, avg=446.57, stdev=273.94 lat (msec): min=232, max=960, avg=447.45, stdev=274.29 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 232], 10.00th=[ 232], 20.00th=[ 255], | 30.00th=[ 255], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 351], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 1706, max= 2048, per=28.17%, avg=1973.60, stdev=149.95, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (usec) : 750=8.33% lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33% cpu : usr=0.00%, sys=41.01%, ctx=381, 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=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=183337: Mon Aug 10 10:59:07 2026 read: IOPS=1, BW=1660KiB/s (1700kB/s)(5120KiB/3084msec) clat (usec): min=880, max=173992, avg=78517.54, stdev=65903.86 lat (usec): min=882, max=173994, avg=78519.17, stdev=65903.71 clat percentiles (usec): | 1.00th=[ 881], 5.00th=[ 881], 10.00th=[ 881], 20.00th=[ 881], | 30.00th=[ 52167], 40.00th=[ 52167], 50.00th=[ 55837], 60.00th=[ 55837], | 70.00th=[110625], 80.00th=[110625], 90.00th=[173016], 95.00th=[173016], | 99.00th=[173016], 99.50th=[173016], 99.90th=[173016], 99.95th=[173016], | 99.99th=[173016] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2324KiB/s (2380kB/s)(7168KiB/3084msec); 0 zone resets clat (msec): min=191, max=684, avg=380.55, stdev=174.64 lat (msec): min=191, max=684, avg=380.61, stdev=174.65 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 234], | 30.00th=[ 249], 40.00th=[ 249], 50.00th=[ 376], 60.00th=[ 439], | 70.00th=[ 439], 80.00th=[ 493], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 1692, max= 2048, per=27.96%, avg=1959.20, stdev=153.48, samples=5 iops : min= 1, max= 2, avg= 1.40, stdev= 0.55, samples=5 lat (usec) : 1000=8.33% lat (msec) : 100=16.67%, 250=41.67%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=48.39%, ctx=308, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5005KiB/s (5125kB/s), 500KiB/s-2706KiB/s (513kB/s-2771kB/s), io=20.0MiB (20.0MB), run=2649-4092msec WRITE: bw=7007KiB/s (7175kB/s), 1716KiB/s-2502KiB/s (1757kB/s-2563kB/s), io=28.0MiB (29.4MB), run=2649-4092msec rand-rw: (groupid=0, jobs=1): err= 0: pid=183339: Mon Aug 10 10:59:08 2026 read: IOPS=1, BW=1956KiB/s (2003kB/s)(7168KiB/3665msec) clat (msec): min=77, max=596, avg=235.60, stdev=171.66 lat (msec): min=77, max=596, avg=235.61, stdev=171.66 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 129], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 186], 60.00th=[ 251], | 70.00th=[ 251], 80.00th=[ 259], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 2031, max= 4096, per=59.44%, avg=2873.50, stdev=1013.94, samples=4 iops : min= 1, max= 4, avg= 2.50, stdev= 1.29, samples=4 write: IOPS=1, BW=1397KiB/s (1431kB/s)(5120KiB/3665msec); 0 zone resets clat (msec): min=97, max=559, avg=377.06, stdev=196.96 lat (msec): min=97, max=559, avg=377.13, stdev=196.96 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 97], | 30.00th=[ 257], 40.00th=[ 257], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1984, max= 4063, per=37.34%, avg=2527.25, stdev=1024.08, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 100=16.67%, 250=25.00%, 500=33.33%, 750=25.00% cpu : usr=0.00%, sys=17.82%, ctx=197, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183340: Mon Aug 10 10:59:08 2026 read: IOPS=0, BW=483KiB/s (495kB/s)(2048KiB/4236msec) clat (msec): min=71, max=410, avg=241.09, stdev=239.76 lat (msec): min=71, max=410, avg=241.09, stdev=239.76 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 72], | 30.00th=[ 72], 40.00th=[ 72], 50.00th=[ 72], 60.00th=[ 409], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 1692, max= 2031, per=38.51%, avg=1861.50, stdev=239.71, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2417KiB/s (2475kB/s)(10.0MiB/4236msec); 0 zone resets clat (msec): min=43, max=1279, avg=363.42, stdev=371.80 lat (msec): min=43, max=1279, avg=363.50, stdev=371.80 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 44], 10.00th=[ 44], 20.00th=[ 97], | 30.00th=[ 124], 40.00th=[ 131], 50.00th=[ 148], 60.00th=[ 384], | 70.00th=[ 397], 80.00th=[ 405], 90.00th=[ 625], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 2027, max= 8192, per=53.98%, avg=3653.20, stdev=2671.73, samples=5 iops : min= 1, max= 8, avg= 3.00, stdev= 2.92, samples=5 lat (msec) : 50=8.33%, 100=16.67%, 250=25.00%, 500=33.33%, 750=8.33% lat (msec) : 2000=8.33% cpu : usr=0.02%, sys=18.91%, ctx=163, 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=183341: Mon Aug 10 10:59:08 2026 read: IOPS=1, BW=1558KiB/s (1595kB/s)(6144KiB/3944msec) clat (msec): min=76, max=498, avg=188.50, stdev=157.81 lat (msec): min=76, max=498, avg=188.50, stdev=157.81 clat percentiles (msec): | 1.00th=[ 77], 5.00th=[ 77], 10.00th=[ 77], 20.00th=[ 86], | 30.00th=[ 86], 40.00th=[ 117], 50.00th=[ 117], 60.00th=[ 171], | 70.00th=[ 184], 80.00th=[ 184], 90.00th=[ 498], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 2027, max= 4096, per=70.24%, avg=3395.33, stdev=1185.13, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1558KiB/s (1595kB/s)(6144KiB/3944msec); 0 zone resets clat (msec): min=155, max=747, avg=465.62, stdev=243.86 lat (msec): min=155, max=748, avg=465.69, stdev=243.86 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 218], | 30.00th=[ 218], 40.00th=[ 414], 50.00th=[ 414], 60.00th=[ 600], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 2027, max= 4096, per=37.68%, avg=2550.50, stdev=1030.37, samples=4 iops : min= 1, max= 4, avg= 2.00, stdev= 1.41, samples=4 lat (msec) : 100=16.67%, 250=41.67%, 500=16.67%, 750=25.00% cpu : usr=0.00%, sys=17.80%, ctx=149, 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=183342: Mon Aug 10 10:59:08 2026 read: IOPS=1, BW=1214KiB/s (1243kB/s)(5120KiB/4218msec) clat (msec): min=47, max=520, avg=286.87, stdev=217.37 lat (msec): min=47, max=520, avg=286.88, stdev=217.37 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 47], | 30.00th=[ 68], 40.00th=[ 68], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 523], 95.00th=[ 523], | 99.00th=[ 523], 99.50th=[ 523], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 2027, max= 4096, per=56.23%, avg=2718.00, stdev=1193.38, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 write: IOPS=1, BW=1699KiB/s (1740kB/s)(7168KiB/4218msec); 0 zone resets clat (msec): min=44, max=1019, avg=391.20, stdev=376.31 lat (msec): min=44, max=1019, avg=391.28, stdev=376.30 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 45], 10.00th=[ 45], 20.00th=[ 83], | 30.00th=[ 245], 40.00th=[ 245], 50.00th=[ 264], 60.00th=[ 266], | 70.00th=[ 266], 80.00th=[ 818], 90.00th=[ 1020], 95.00th=[ 1020], | 99.00th=[ 1020], 99.50th=[ 1020], 99.90th=[ 1020], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 2048, max= 4096, per=44.92%, avg=3040.00, stdev=1146.65, samples=4 iops : min= 2, max= 4, avg= 2.75, stdev= 0.96, samples=4 lat (msec) : 50=16.67%, 100=16.67%, 250=8.33%, 500=33.33%, 750=8.33% lat (msec) : 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=19.09%, ctx=167, 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=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=4835KiB/s (4951kB/s), 483KiB/s-1956KiB/s (495kB/s-2003kB/s), io=20.0MiB (20.0MB), run=3665-4236msec WRITE: bw=6769KiB/s (6931kB/s), 1397KiB/s-2417KiB/s (1431kB/s-2475kB/s), io=28.0MiB (29.4MB), run=3665-4236msec 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=183349: Mon Aug 10 10:59:16 2026 read: IOPS=1, BW=7758KiB/s (7944kB/s)(12.0MiB/1584msec) clat (msec): min=319, max=674, avg=513.13, stdev=179.41 lat (msec): min=319, max=674, avg=513.13, stdev=179.41 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 5809, max= 7861, per=95.17%, avg=6835.00, stdev=1450.98, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=55.02%, ctx=2755, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183350: Mon Aug 10 10:59:16 2026 read: IOPS=0, BW=1796KiB/s (1839kB/s)(4096KiB/2281msec) clat (nsec): min=362507k, max=362507k, avg=362506952.00, stdev= 0.00 lat (nsec): min=362508k, max=362508k, avg=362508147.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 363], 10.00th=[ 363], 20.00th=[ 363], | 30.00th=[ 363], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 363], | 70.00th=[ 363], 80.00th=[ 363], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 5696, max= 5696, per=79.31%, avg=5696.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3591KiB/s (3678kB/s)(8192KiB/2281msec); 0 zone resets clat (msec): min=453, max=1447, avg=950.96, stdev=702.82 lat (msec): min=454, max=1448, avg=951.23, stdev=702.84 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 456], 10.00th=[ 456], 20.00th=[ 456], | 30.00th=[ 456], 40.00th=[ 456], 50.00th=[ 456], 60.00th=[ 1452], | 70.00th=[ 1452], 80.00th=[ 1452], 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= 8175, max= 8175, per=56.91%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.04%, sys=19.65%, ctx=1094, 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=183352: Mon Aug 10 10:59:16 2026 write: IOPS=1, BW=6617KiB/s (6776kB/s)(12.0MiB/1857msec); 0 zone resets clat (msec): min=431, max=727, avg=608.95, stdev=156.14 lat (msec): min=432, max=727, avg=609.25, stdev=156.15 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7861, max= 8175, per=55.82%, avg=8018.00, stdev=222.03, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.11%, sys=17.40%, ctx=94, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=183355: Mon Aug 10 10:59:16 2026 write: IOPS=1, BW=7867KiB/s (8056kB/s)(12.0MiB/1562msec); 0 zone resets clat (msec): min=401, max=675, avg=513.52, stdev=143.98 lat (msec): min=401, max=676, avg=513.79, stdev=143.98 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 401], 10.00th=[ 401], 20.00th=[ 401], | 30.00th=[ 401], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 5893, max= 7861, per=47.87%, avg=6877.00, stdev=1391.59, 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=26.52%, ctx=91, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=7183KiB/s (7355kB/s), 1796KiB/s-7758KiB/s (1839kB/s-7944kB/s), io=16.0MiB (16.8MB), run=1584-2281msec WRITE: bw=14.0MiB/s (14.7MB/s), 3591KiB/s-7867KiB/s (3678kB/s-8056kB/s), io=32.0MiB (33.6MB), run=1562-2281msec rand-rw: (groupid=0, jobs=1): err= 0: pid=183348: Mon Aug 10 10:59:16 2026 read: IOPS=1, BW=5397KiB/s (5526kB/s)(12.0MiB/2277msec) clat (msec): min=187, max=1226, avg=741.44, stdev=522.75 lat (msec): min=187, max=1226, avg=741.44, stdev=522.75 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 188], 10.00th=[ 188], 20.00th=[ 188], | 30.00th=[ 188], 40.00th=[ 810], 50.00th=[ 810], 60.00th=[ 810], | 70.00th=[ 1234], 80.00th=[ 1234], 90.00th=[ 1234], 95.00th=[ 1234], | 99.00th=[ 1234], 99.50th=[ 1234], 99.90th=[ 1234], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.04%, sys=14.67%, ctx=71, 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=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=183351: Mon Aug 10 10:59:16 2026 read: IOPS=0, BW=2132KiB/s (2183kB/s)(4096KiB/1921msec) clat (nsec): min=269412k, max=269412k, avg=269412249.00, stdev= 0.00 lat (nsec): min=269414k, max=269414k, avg=269414309.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 271], 95.00th=[ 271], | 99.00th=[ 271], 99.50th=[ 271], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 5446, max= 5446, per=75.69%, avg=5446.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4264KiB/s (4367kB/s)(8192KiB/1921msec); 0 zone resets clat (msec): min=815, max=827, avg=821.50, stdev= 8.29 lat (msec): min=815, max=827, avg=821.72, stdev= 8.36 clat percentiles (msec): | 1.00th=[ 818], 5.00th=[ 818], 10.00th=[ 818], 20.00th=[ 818], | 30.00th=[ 818], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 827], | 70.00th=[ 827], 80.00th=[ 827], 90.00th=[ 827], 95.00th=[ 827], | 99.00th=[ 827], 99.50th=[ 827], 99.90th=[ 827], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7861, max= 7861, per=50.04%, avg=7861.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.00%, sys=15.36%, ctx=74, 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=183353: Mon Aug 10 10:59:16 2026 write: IOPS=1, BW=5891KiB/s (6032kB/s)(12.0MiB/2086msec); 0 zone resets clat (msec): min=176, max=1034, avg=689.83, stdev=453.24 lat (msec): min=176, max=1034, avg=690.12, stdev=453.26 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 178], | 30.00th=[ 178], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 70.00th=[ 1036], 80.00th=[ 1036], 90.00th=[ 1036], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7861, max= 7861, per=50.04%, avg=7861.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.05%, sys=14.68%, ctx=42, 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=183354: Mon Aug 10 10:59:16 2026 write: IOPS=1, BW=6631KiB/s (6791kB/s)(12.0MiB/1853msec); 0 zone resets clat (msec): min=188, max=897, avg=605.08, stdev=370.28 lat (msec): min=189, max=897, avg=605.30, stdev=370.25 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 902], 80.00th=[ 902], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7861, max= 8192, per=51.10%, avg=8026.50, stdev=234.05, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.05%, sys=16.14%, ctx=56, 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=7195KiB/s (7368kB/s), 2132KiB/s-5397KiB/s (2183kB/s-5526kB/s), io=16.0MiB (16.8MB), run=1921-2277msec WRITE: bw=15.3MiB/s (16.1MB/s), 4264KiB/s-6631KiB/s (4367kB/s-6791kB/s), io=32.0MiB (33.6MB), run=1853-2086msec