== sanity test 398b: DIO and buffer IO race ============== 06:15:57 (1768130157) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.55224 s, 19.7 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=194777: Sun Jan 11 06:17:04 2026 read: IOPS=26, BW=104KiB/s (107kB/s)(5992KiB/57516msec) clat (usec): min=88, max=677977, avg=20575.60, stdev=20033.30 lat (usec): min=89, max=677977, avg=20576.22, stdev=20033.30 clat percentiles (usec): | 1.00th=[ 461], 5.00th=[ 7963], 10.00th=[ 9634], 20.00th=[ 11731], | 30.00th=[ 13698], 40.00th=[ 16057], 50.00th=[ 18220], 60.00th=[ 20841], | 70.00th=[ 23462], 80.00th=[ 27395], 90.00th=[ 33424], 95.00th=[ 39060], | 99.00th=[ 57410], 99.50th=[ 66847], 99.90th=[ 87557], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 15, max= 184, per=25.08%, avg=103.82, stdev=29.86, samples=114 iops : min= 3, max= 46, avg=25.56, stdev= 7.58, samples=114 write: IOPS=27, BW=109KiB/s (112kB/s)(6296KiB/57516msec); 0 zone resets clat (usec): min=705, max=108968, avg=16831.64, stdev=13285.01 lat (usec): min=706, max=108968, avg=16832.42, stdev=13284.98 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 2737], 10.00th=[ 3261], 20.00th=[ 4752], | 30.00th=[ 7308], 40.00th=[ 10683], 50.00th=[ 13698], 60.00th=[ 17171], | 70.00th=[ 21627], 80.00th=[ 26608], 90.00th=[ 35390], 95.00th=[ 43254], | 99.00th=[ 53740], 99.50th=[ 67634], 99.90th=[ 81265], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 39, max= 176, per=25.45%, avg=110.20, stdev=32.07, samples=113 iops : min= 9, max= 44, avg=27.16, stdev= 8.01, samples=113 lat (usec) : 100=0.03%, 250=0.03%, 500=0.46%, 750=0.75%, 1000=0.36% lat (msec) : 2=0.91%, 4=6.51%, 10=15.82%, 20=37.50%, 50=35.55% lat (msec) : 100=2.02%, 250=0.03%, 750=0.03% cpu : usr=0.07%, sys=25.35%, ctx=9297, 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=194778: Sun Jan 11 06:17:04 2026 read: IOPS=25, BW=103KiB/s (105kB/s)(5940KiB/57800msec) clat (usec): min=144, max=88311, avg=20258.23, stdev=10559.32 lat (usec): min=144, max=88312, avg=20258.84, stdev=10559.32 clat percentiles (usec): | 1.00th=[ 519], 5.00th=[ 8160], 10.00th=[ 9634], 20.00th=[11731], | 30.00th=[14091], 40.00th=[16319], 50.00th=[18482], 60.00th=[20841], | 70.00th=[23462], 80.00th=[27395], 90.00th=[33162], 95.00th=[37487], | 99.00th=[57410], 99.50th=[65274], 99.90th=[82314], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 7, max= 184, per=24.78%, avg=102.57, stdev=30.87, samples=115 iops : min= 1, max= 46, avg=25.25, stdev= 7.77, samples=115 write: IOPS=27, BW=110KiB/s (112kB/s)(6348KiB/57800msec); 0 zone resets clat (usec): min=656, max=599813, avg=17330.50, stdev=19920.15 lat (usec): min=656, max=599814, avg=17331.49, stdev=19920.07 clat percentiles (usec): | 1.00th=[ 848], 5.00th=[ 2540], 10.00th=[ 3228], 20.00th=[ 4752], | 30.00th=[ 7767], 40.00th=[ 10945], 50.00th=[ 13960], 60.00th=[ 17171], | 70.00th=[ 21103], 80.00th=[ 26870], 90.00th=[ 35390], 95.00th=[ 43254], | 99.00th=[ 58459], 99.50th=[ 77071], 99.90th=[103285], 99.95th=[599786], | 99.99th=[599786] bw ( KiB/s): min= 7, max= 192, per=25.26%, avg=109.39, stdev=36.08, samples=115 iops : min= 1, max= 48, avg=26.96, stdev= 9.10, samples=115 lat (usec) : 250=0.03%, 500=0.36%, 750=0.68%, 1000=0.49% lat (msec) : 2=0.98%, 4=6.12%, 10=15.95%, 20=37.50%, 50=35.51% lat (msec) : 100=2.31%, 250=0.03%, 750=0.03% cpu : usr=0.08%, sys=25.55%, ctx=9165, 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=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=194780: Sun Jan 11 06:17:04 2026 read: IOPS=26, BW=106KiB/s (109kB/s)(6028KiB/56837msec) clat (usec): min=80, max=605442, avg=20528.85, stdev=18314.46 lat (usec): min=81, max=605443, avg=20529.52, stdev=18314.48 clat percentiles (usec): | 1.00th=[ 437], 5.00th=[ 7439], 10.00th=[ 9503], 20.00th=[ 11863], | 30.00th=[ 13960], 40.00th=[ 16188], 50.00th=[ 18482], 60.00th=[ 20841], | 70.00th=[ 23462], 80.00th=[ 27132], 90.00th=[ 33162], 95.00th=[ 39584], | 99.00th=[ 52691], 99.50th=[ 61604], 99.90th=[ 83362], 99.95th=[608175], | 99.99th=[608175] bw ( KiB/s): min= 15, max= 207, per=25.58%, avg=105.88, stdev=30.26, samples=113 iops : min= 3, max= 51, avg=26.08, stdev= 7.64, samples=113 write: IOPS=27, BW=110KiB/s (113kB/s)(6260KiB/56837msec); 0 zone resets clat (usec): min=710, max=95711, avg=16413.87, stdev=13080.05 lat (usec): min=710, max=95712, avg=16415.49, stdev=13079.65 clat percentiles (usec): | 1.00th=[ 791], 5.00th=[ 2089], 10.00th=[ 2999], 20.00th=[ 4752], | 30.00th=[ 7242], 40.00th=[10683], 50.00th=[13698], 60.00th=[16909], | 70.00th=[20579], 80.00th=[25560], 90.00th=[33817], 95.00th=[41157], | 99.00th=[60031], 99.50th=[69731], 99.90th=[74974], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 30, max= 208, per=25.38%, avg=109.91, stdev=30.70, samples=113 iops : min= 7, max= 52, avg=27.09, stdev= 7.75, samples=113 lat (usec) : 100=0.03%, 250=0.07%, 500=0.49%, 750=0.65%, 1000=1.04% lat (msec) : 2=1.30%, 4=6.02%, 10=15.27%, 20=37.63%, 50=35.58% lat (msec) : 100=1.89%, 750=0.03% cpu : usr=0.07%, sys=25.58%, ctx=9094, 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= 0: pid=194782: Sun Jan 11 06:17:04 2026 read: IOPS=26, BW=104KiB/s (107kB/s)(6052KiB/57962msec) clat (usec): min=84, max=125357, avg=20142.53, stdev=10953.37 lat (usec): min=85, max=125357, avg=20149.19, stdev=10951.53 clat percentiles (usec): | 1.00th=[ 420], 5.00th=[ 6915], 10.00th=[ 9372], 20.00th=[ 11731], | 30.00th=[ 13960], 40.00th=[ 16057], 50.00th=[ 18220], 60.00th=[ 20841], | 70.00th=[ 23987], 80.00th=[ 27919], 90.00th=[ 33162], 95.00th=[ 38536], | 99.00th=[ 53740], 99.50th=[ 67634], 99.90th=[ 89654], 99.95th=[125305], | 99.99th=[125305] bw ( KiB/s): min= 32, max= 168, per=25.35%, avg=104.95, stdev=27.53, samples=114 iops : min= 8, max= 42, avg=25.85, stdev= 6.92, samples=114 write: IOPS=26, BW=108KiB/s (110kB/s)(6236KiB/57962msec); 0 zone resets clat (usec): min=712, max=619023, avg=17482.93, stdev=20033.06 lat (usec): min=713, max=619025, avg=17483.65, stdev=20033.10 clat percentiles (usec): | 1.00th=[ 914], 5.00th=[ 2573], 10.00th=[ 3261], 20.00th=[ 4948], | 30.00th=[ 8291], 40.00th=[ 11600], 50.00th=[ 14484], 60.00th=[ 17695], | 70.00th=[ 21627], 80.00th=[ 27395], 90.00th=[ 34341], 95.00th=[ 41681], | 99.00th=[ 57934], 99.50th=[ 66323], 99.90th=[101188], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 39, max= 216, per=24.97%, avg=108.11, stdev=34.12, samples=114 iops : min= 9, max= 54, avg=26.64, stdev= 8.60, samples=114 lat (usec) : 100=0.03%, 250=0.16%, 500=0.52%, 750=0.65%, 1000=0.68% lat (msec) : 2=1.04%, 4=5.79%, 10=14.78%, 20=38.02%, 50=36.52% lat (msec) : 100=1.69%, 250=0.07%, 750=0.03% cpu : usr=0.08%, sys=25.60%, ctx=9204, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=414KiB/s (424kB/s), 103KiB/s-106KiB/s (105kB/s-109kB/s), io=23.4MiB (24.6MB), run=56837-57962msec WRITE: bw=434KiB/s (444kB/s), 108KiB/s-110KiB/s (110kB/s-113kB/s), io=24.6MiB (25.7MB), run=56837-57962msec rand-rw: (groupid=0, jobs=1): err= 0: pid=194776: Sun Jan 11 06:17:12 2026 read: IOPS=22, BW=90.4KiB/s (92.6kB/s)(5992KiB/66275msec) clat (msec): min=2, max=688, avg=19.57, stdev=22.90 lat (msec): min=2, max=688, avg=19.57, stdev=22.90 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 17], | 70.00th=[ 22], 80.00th=[ 30], 90.00th=[ 41], 95.00th=[ 51], | 99.00th=[ 73], 99.50th=[ 80], 99.90th=[ 120], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 23, max= 312, per=25.05%, avg=90.68, stdev=60.61, samples=131 iops : min= 5, max= 78, avg=22.34, stdev=15.26, samples=131 write: IOPS=23, BW=94.0KiB/s (97.3kB/s)(6296KiB/66275msec); 0 zone resets clat (msec): min=3, max=113, avg=23.36, stdev=16.51 lat (msec): min=3, max=113, avg=23.36, stdev=16.51 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 54], | 99.00th=[ 83], 99.50th=[ 88], 99.90th=[ 109], 99.95th=[ 114], | 99.99th=[ 114] bw ( KiB/s): min= 24, max= 320, per=25.12%, avg=95.19, stdev=61.90, samples=131 iops : min= 6, max= 80, avg=23.47, stdev=15.59, samples=131 lat (msec) : 4=0.55%, 10=29.39%, 20=30.34%, 50=33.72%, 100=5.79% lat (msec) : 250=0.16%, 750=0.03% cpu : usr=0.05%, sys=13.15%, ctx=5948, 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=194779: Sun Jan 11 06:17:12 2026 read: IOPS=22, BW=89.8KiB/s (91.0kB/s)(5940KiB/66130msec) clat (msec): min=3, max=610, avg=19.11, stdev=21.38 lat (msec): min=3, max=610, avg=19.11, stdev=21.38 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 27], 90.00th=[ 41], 95.00th=[ 51], | 99.00th=[ 75], 99.50th=[ 83], 99.90th=[ 121], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 15, max= 304, per=24.85%, avg=89.95, stdev=61.37, samples=130 iops : min= 3, max= 76, avg=22.16, stdev=15.45, samples=130 write: IOPS=23, BW=95.0KiB/s (98.3kB/s)(6348KiB/66130msec); 0 zone resets clat (msec): min=5, max=140, avg=23.66, stdev=16.93 lat (msec): min=5, max=140, avg=23.66, stdev=16.93 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 47], 95.00th=[ 56], | 99.00th=[ 82], 99.50th=[ 94], 99.90th=[ 127], 99.95th=[ 140], | 99.99th=[ 140] bw ( KiB/s): min= 39, max= 312, per=25.28%, avg=95.81, stdev=60.16, samples=130 iops : min= 9, max= 78, avg=23.62, stdev=15.14, samples=130 lat (msec) : 4=0.36%, 10=29.23%, 20=30.86%, 50=33.14%, 100=6.12% lat (msec) : 250=0.26%, 750=0.03% cpu : usr=0.07%, sys=12.90%, ctx=5813, 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=194781: Sun Jan 11 06:17:12 2026 read: IOPS=22, BW=91.3KiB/s (93.5kB/s)(6028KiB/66042msec) clat (msec): min=2, max=109, avg=19.20, stdev=15.08 lat (msec): min=2, max=109, avg=19.20, stdev=15.08 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 15], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 30], 90.00th=[ 40], 95.00th=[ 51], | 99.00th=[ 72], 99.50th=[ 78], 99.90th=[ 103], 99.95th=[ 110], | 99.99th=[ 110] bw ( KiB/s): min= 15, max= 320, per=25.26%, avg=91.44, stdev=62.55, samples=130 iops : min= 3, max= 80, avg=22.53, stdev=15.75, samples=130 write: IOPS=23, BW=94.8KiB/s (97.1kB/s)(6260KiB/66042msec); 0 zone resets clat (msec): min=5, max=619, avg=23.59, stdev=22.25 lat (msec): min=5, max=619, avg=23.59, stdev=22.25 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 37], 90.00th=[ 45], 95.00th=[ 53], | 99.00th=[ 84], 99.50th=[ 94], 99.90th=[ 142], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 31, max= 288, per=24.98%, avg=94.69, stdev=58.67, samples=130 iops : min= 7, max= 72, avg=23.35, stdev=14.77, samples=130 lat (msec) : 4=0.33%, 10=28.87%, 20=30.66%, 50=34.24%, 100=5.57% lat (msec) : 250=0.29%, 750=0.03% cpu : usr=0.07%, sys=13.04%, ctx=5822, 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=194783: Sun Jan 11 06:17:12 2026 read: IOPS=22, BW=91.4KiB/s (93.6kB/s)(6052KiB/66217msec) clat (msec): min=3, max=128, avg=19.03, stdev=14.80 lat (msec): min=3, max=128, avg=19.03, stdev=14.80 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 10], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 18], | 70.00th=[ 22], 80.00th=[ 29], 90.00th=[ 40], 95.00th=[ 49], | 99.00th=[ 73], 99.50th=[ 85], 99.90th=[ 111], 99.95th=[ 129], | 99.99th=[ 129] bw ( KiB/s): min= 16, max= 320, per=25.39%, avg=91.90, stdev=60.03, samples=131 iops : min= 4, max= 80, avg=22.65, stdev=15.12, samples=131 write: IOPS=23, BW=94.2KiB/s (96.4kB/s)(6236KiB/66217msec); 0 zone resets clat (msec): min=3, max=621, avg=23.88, stdev=22.64 lat (msec): min=3, max=621, avg=23.88, stdev=22.64 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 19], 60.00th=[ 24], | 70.00th=[ 30], 80.00th=[ 36], 90.00th=[ 46], 95.00th=[ 55], | 99.00th=[ 79], 99.50th=[ 93], 99.90th=[ 130], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 31, max= 304, per=24.96%, avg=94.58, stdev=60.27, samples=131 iops : min= 7, max= 76, avg=23.32, stdev=15.18, samples=131 lat (msec) : 4=0.29%, 10=28.58%, 20=31.54%, 50=33.82%, 100=5.50% lat (msec) : 250=0.23%, 750=0.03% cpu : usr=0.07%, sys=12.96%, ctx=6020, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=362KiB/s (371kB/s), 89.8KiB/s-91.4KiB/s (91.0kB/s-93.6kB/s), io=23.4MiB (24.6MB), run=66042-66275msec WRITE: bw=379KiB/s (388kB/s), 94.2KiB/s-95.0KiB/s (96.4kB/s-98.3kB/s), io=24.6MiB (25.7MB), run=66042-66275msec 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=194807: Sun Jan 11 06:17:31 2026 read: IOPS=28, BW=456KiB/s (467kB/s)(5920KiB/12993msec) clat (usec): min=258, max=76691, avg=17694.04, stdev=9398.63 lat (usec): min=259, max=76691, avg=17694.66, stdev=9398.75 clat percentiles (usec): | 1.00th=[ 359], 5.00th=[ 441], 10.00th=[ 8455], 20.00th=[11076], | 30.00th=[13173], 40.00th=[14877], 50.00th=[17171], 60.00th=[19268], | 70.00th=[21627], 80.00th=[23725], 90.00th=[27919], 95.00th=[32113], | 99.00th=[49546], 99.50th=[51643], 99.90th=[77071], 99.95th=[77071], | 99.99th=[77071] bw ( KiB/s): min= 287, max= 672, per=24.05%, avg=443.16, stdev=102.31, samples=25 iops : min= 17, max= 42, avg=27.28, stdev= 6.44, samples=25 write: IOPS=30, BW=490KiB/s (502kB/s)(6368KiB/12993msec); 0 zone resets clat (usec): min=1088, max=65317, avg=16029.82, stdev=11418.17 lat (usec): min=1089, max=65317, avg=16030.66, stdev=11418.22 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 3654], 10.00th=[ 4359], 20.00th=[ 5800], | 30.00th=[ 8848], 40.00th=[11600], 50.00th=[13435], 60.00th=[15533], | 70.00th=[18744], 80.00th=[23725], 90.00th=[32113], 95.00th=[40633], | 99.00th=[53740], 99.50th=[63701], 99.90th=[65274], 99.95th=[65274], | 99.99th=[65274] bw ( KiB/s): min= 288, max= 672, per=24.87%, avg=482.28, stdev=86.96, samples=25 iops : min= 18, max= 42, avg=29.76, stdev= 5.49, samples=25 lat (usec) : 500=3.26%, 750=0.39% lat (msec) : 2=0.65%, 4=2.73%, 10=17.06%, 20=44.27%, 50=30.21% lat (msec) : 100=1.43% cpu : usr=0.07%, sys=28.54%, ctx=2763, 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=194808: Sun Jan 11 06:17:31 2026 read: IOPS=27, BW=448KiB/s (458kB/s)(5744KiB/12832msec) clat (usec): min=86, max=66224, avg=18200.41, stdev=9275.92 lat (usec): min=87, max=66225, avg=18200.91, stdev=9275.93 clat percentiles (usec): | 1.00th=[ 310], 5.00th=[ 519], 10.00th=[ 9634], 20.00th=[11731], | 30.00th=[12911], 40.00th=[14615], 50.00th=[16712], 60.00th=[19530], | 70.00th=[21890], 80.00th=[24511], 90.00th=[29754], 95.00th=[32375], | 99.00th=[47973], 99.50th=[59507], 99.90th=[66323], 99.95th=[66323], | 99.99th=[66323] bw ( KiB/s): min= 288, max= 576, per=24.25%, avg=446.96, stdev=82.13, samples=25 iops : min= 18, max= 36, avg=27.52, stdev= 5.03, samples=25 write: IOPS=31, BW=510KiB/s (522kB/s)(6544KiB/12832msec); 0 zone resets clat (usec): min=1070, max=66771, avg=15295.98, stdev=10976.68 lat (usec): min=1071, max=66772, avg=15296.76, stdev=10976.67 clat percentiles (usec): | 1.00th=[ 1254], 5.00th=[ 3490], 10.00th=[ 4490], 20.00th=[ 5473], | 30.00th=[ 7308], 40.00th=[10290], 50.00th=[12256], 60.00th=[15664], | 70.00th=[19530], 80.00th=[23725], 90.00th=[31065], 95.00th=[36963], | 99.00th=[45876], 99.50th=[49546], 99.90th=[66847], 99.95th=[66847], | 99.99th=[66847] bw ( KiB/s): min= 254, max= 704, per=26.05%, avg=505.04, stdev=111.54, samples=25 iops : min= 15, max= 44, avg=31.16, stdev= 7.08, samples=25 lat (usec) : 100=0.13%, 250=0.13%, 500=1.69%, 750=0.52% lat (msec) : 2=1.43%, 4=2.60%, 10=19.40%, 20=40.89%, 50=32.55% lat (msec) : 100=0.65% cpu : usr=0.02%, sys=29.28%, ctx=2680, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194809: Sun Jan 11 06:17:31 2026 read: IOPS=30, BW=491KiB/s (503kB/s)(6256KiB/12735msec) clat (usec): min=256, max=66108, avg=18234.30, stdev=9362.82 lat (usec): min=257, max=66109, avg=18234.82, stdev=9362.84 clat percentiles (usec): | 1.00th=[ 334], 5.00th=[ 4948], 10.00th=[ 9765], 20.00th=[11731], | 30.00th=[13435], 40.00th=[14877], 50.00th=[16909], 60.00th=[19006], | 70.00th=[21627], 80.00th=[23987], 90.00th=[28181], 95.00th=[32900], | 99.00th=[53216], 99.50th=[65274], 99.90th=[66323], 99.95th=[66323], | 99.99th=[66323] bw ( KiB/s): min= 319, max= 704, per=26.74%, avg=492.84, stdev=100.76, samples=25 iops : min= 19, max= 44, avg=30.40, stdev= 6.45, samples=25 write: IOPS=29, BW=474KiB/s (485kB/s)(6032KiB/12735msec); 0 zone resets clat (usec): min=1471, max=50489, avg=14640.22, stdev=9742.63 lat (usec): min=1472, max=50490, avg=14640.99, stdev=9742.63 clat percentiles (usec): | 1.00th=[ 1827], 5.00th=[ 4146], 10.00th=[ 4817], 20.00th=[ 5669], | 30.00th=[ 8029], 40.00th=[10683], 50.00th=[12518], 60.00th=[14484], | 70.00th=[17695], 80.00th=[21890], 90.00th=[26608], 95.00th=[36963], | 99.00th=[45876], 99.50th=[49021], 99.90th=[50594], 99.95th=[50594], | 99.99th=[50594] bw ( KiB/s): min= 256, max= 640, per=24.06%, avg=466.48, stdev=100.81, samples=25 iops : min= 16, max= 40, avg=28.76, stdev= 6.23, samples=25 lat (usec) : 500=2.21%, 1000=0.13% lat (msec) : 2=0.52%, 4=1.30%, 10=19.53%, 20=45.96%, 50=29.43% lat (msec) : 100=0.91% cpu : usr=0.03%, sys=29.03%, ctx=2780, 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=194810: Sun Jan 11 06:17:31 2026 read: IOPS=30, BW=481KiB/s (492kB/s)(6032KiB/12543msec) clat (usec): min=85, max=89883, avg=17234.74, stdev=9683.22 lat (usec): min=86, max=89883, avg=17235.22, stdev=9683.22 clat percentiles (usec): | 1.00th=[ 273], 5.00th=[ 457], 10.00th=[ 8356], 20.00th=[11076], | 30.00th=[12911], 40.00th=[14353], 50.00th=[16057], 60.00th=[17957], | 70.00th=[20317], 80.00th=[23200], 90.00th=[27395], 95.00th=[32900], | 99.00th=[46400], 99.50th=[69731], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 224, max= 576, per=25.84%, avg=476.17, stdev=82.63, samples=24 iops : min= 14, max= 36, avg=29.37, stdev= 5.22, samples=24 write: IOPS=31, BW=499KiB/s (511kB/s)(6256KiB/12543msec); 0 zone resets clat (usec): min=1042, max=75079, avg=15418.08, stdev=10963.45 lat (usec): min=1042, max=75079, avg=15419.04, stdev=10963.35 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 3884], 10.00th=[ 4621], 20.00th=[ 5276], | 30.00th=[ 7635], 40.00th=[10552], 50.00th=[13042], 60.00th=[15795], | 70.00th=[18482], 80.00th=[23987], 90.00th=[30016], 95.00th=[36439], | 99.00th=[52691], 99.50th=[58459], 99.90th=[74974], 99.95th=[74974], | 99.99th=[74974] bw ( KiB/s): min= 287, max= 704, per=25.68%, avg=497.88, stdev=116.00, samples=24 iops : min= 17, max= 44, avg=30.75, stdev= 7.36, samples=24 lat (usec) : 100=0.13%, 250=0.26%, 500=2.73%, 750=0.39%, 1000=0.13% lat (msec) : 2=1.04%, 4=2.34%, 10=18.75%, 20=44.66%, 50=28.78% lat (msec) : 100=0.78% cpu : usr=0.08%, sys=28.90%, ctx=2641, 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=1843KiB/s (1888kB/s), 448KiB/s-491KiB/s (458kB/s-503kB/s), io=23.4MiB (24.5MB), run=12543-12993msec WRITE: bw=1940KiB/s (1986kB/s), 474KiB/s-510KiB/s (485kB/s-522kB/s), io=24.6MiB (25.8MB), run=12543-12993msec rand-rw: (groupid=0, jobs=1): err= 0: pid=194812: Sun Jan 11 06:17:33 2026 read: IOPS=23, BW=382KiB/s (391kB/s)(5920KiB/15497msec) clat (usec): min=4390, max=67665, avg=18010.36, stdev=12226.32 lat (usec): min=4391, max=67665, avg=18010.96, stdev=12226.34 clat percentiles (usec): | 1.00th=[ 4752], 5.00th=[ 6325], 10.00th=[ 7177], 20.00th=[ 8717], | 30.00th=[ 9896], 40.00th=[11076], 50.00th=[13304], 60.00th=[16057], | 70.00th=[20841], 80.00th=[27132], 90.00th=[35914], 95.00th=[45876], | 99.00th=[55313], 99.50th=[66847], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 191, max= 832, per=24.07%, avg=371.37, stdev=182.14, samples=30 iops : min= 11, max= 52, avg=22.90, stdev=11.37, samples=30 write: IOPS=25, BW=411KiB/s (421kB/s)(6368KiB/15497msec); 0 zone resets clat (msec): min=6, max=118, avg=21.97, stdev=15.06 lat (msec): min=6, max=118, avg=21.97, stdev=15.06 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 26], 80.00th=[ 33], 90.00th=[ 43], 95.00th=[ 51], | 99.00th=[ 75], 99.50th=[ 87], 99.90th=[ 118], 99.95th=[ 118], | 99.99th=[ 118] bw ( KiB/s): min= 127, max= 1024, per=25.01%, avg=405.90, stdev=181.42, samples=30 iops : min= 7, max= 64, avg=25.07, stdev=11.36, samples=30 lat (msec) : 10=23.96%, 20=40.10%, 50=31.90%, 100=3.91%, 250=0.13% cpu : usr=0.04%, sys=13.51%, ctx=1499, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194813: Sun Jan 11 06:17:33 2026 read: IOPS=23, BW=374KiB/s (383kB/s)(5744KiB/15340msec) clat (usec): min=4102, max=91372, avg=17473.07, stdev=11925.78 lat (usec): min=4102, max=91372, avg=17473.68, stdev=11925.76 clat percentiles (usec): | 1.00th=[ 5669], 5.00th=[ 6783], 10.00th=[ 7832], 20.00th=[ 8848], | 30.00th=[10028], 40.00th=[11600], 50.00th=[13435], 60.00th=[16319], | 70.00th=[19006], 80.00th=[23462], 90.00th=[35390], 95.00th=[43779], | 99.00th=[58459], 99.50th=[73925], 99.90th=[91751], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 128, max= 795, per=24.22%, avg=373.67, stdev=177.03, samples=30 iops : min= 8, max= 49, avg=23.03, stdev=11.08, samples=30 write: IOPS=26, BW=427KiB/s (437kB/s)(6544KiB/15340msec); 0 zone resets clat (msec): min=5, max=117, avg=22.01, stdev=14.10 lat (msec): min=5, max=117, avg=22.01, stdev=14.10 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 28], 80.00th=[ 34], 90.00th=[ 42], 95.00th=[ 48], | 99.00th=[ 62], 99.50th=[ 73], 99.90th=[ 118], 99.95th=[ 118], | 99.99th=[ 118] bw ( KiB/s): min= 223, max= 1120, per=26.09%, avg=423.47, stdev=201.55, samples=30 iops : min= 13, max= 70, avg=26.17, stdev=12.60, samples=30 lat (msec) : 10=22.14%, 20=42.32%, 50=32.94%, 100=2.47%, 250=0.13% cpu : usr=0.09%, sys=13.44%, ctx=1448, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194814: Sun Jan 11 06:17:33 2026 read: IOPS=25, BW=405KiB/s (415kB/s)(6256KiB/15445msec) clat (usec): min=5096, max=73321, avg=17984.14, stdev=12151.56 lat (usec): min=5096, max=73322, avg=17984.75, stdev=12151.65 clat percentiles (usec): | 1.00th=[ 5669], 5.00th=[ 7046], 10.00th=[ 7701], 20.00th=[ 8979], | 30.00th=[10028], 40.00th=[11207], 50.00th=[13042], 60.00th=[16319], | 70.00th=[20317], 80.00th=[26084], 90.00th=[36439], 95.00th=[42730], | 99.00th=[60031], 99.50th=[71828], 99.90th=[72877], 99.95th=[72877], | 99.99th=[72877] bw ( KiB/s): min= 192, max= 958, per=26.16%, avg=403.63, stdev=190.27, samples=30 iops : min= 12, max= 59, avg=24.90, stdev=11.89, samples=30 write: IOPS=24, BW=391KiB/s (400kB/s)(6032KiB/15445msec); 0 zone resets clat (msec): min=5, max=117, avg=22.17, stdev=14.50 lat (msec): min=5, max=117, avg=22.17, stdev=14.50 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 13], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 26], 80.00th=[ 33], 90.00th=[ 43], 95.00th=[ 52], | 99.00th=[ 65], 99.50th=[ 84], 99.90th=[ 118], 99.95th=[ 118], | 99.99th=[ 118] bw ( KiB/s): min= 223, max= 890, per=23.55%, avg=382.20, stdev=166.52, samples=30 iops : min= 13, max= 55, avg=23.57, stdev=10.41, samples=30 lat (msec) : 10=23.31%, 20=39.97%, 50=32.68%, 100=3.91%, 250=0.13% cpu : usr=0.01%, sys=14.02%, ctx=1456, 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=194815: Sun Jan 11 06:17:33 2026 read: IOPS=24, BW=389KiB/s (398kB/s)(6032KiB/15519msec) clat (usec): min=4150, max=68094, avg=17936.50, stdev=12445.85 lat (usec): min=4151, max=68095, avg=17937.09, stdev=12445.86 clat percentiles (usec): | 1.00th=[ 4883], 5.00th=[ 6783], 10.00th=[ 7570], 20.00th=[ 8979], | 30.00th=[10028], 40.00th=[11207], 50.00th=[12911], 60.00th=[15533], | 70.00th=[19792], 80.00th=[26608], 90.00th=[36439], 95.00th=[46400], | 99.00th=[61080], 99.50th=[65799], 99.90th=[67634], 99.95th=[67634], | 99.99th=[67634] bw ( KiB/s): min= 191, max= 1024, per=24.51%, avg=378.20, stdev=180.27, samples=30 iops : min= 11, max= 64, avg=23.33, stdev=11.33, samples=30 write: IOPS=25, BW=403KiB/s (413kB/s)(6256KiB/15519msec); 0 zone resets clat (msec): min=5, max=118, avg=22.15, stdev=15.40 lat (msec): min=5, max=118, avg=22.15, stdev=15.40 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 11], | 30.00th=[ 12], 40.00th=[ 14], 50.00th=[ 17], 60.00th=[ 20], | 70.00th=[ 27], 80.00th=[ 33], 90.00th=[ 45], 95.00th=[ 52], | 99.00th=[ 73], 99.50th=[ 86], 99.90th=[ 120], 99.95th=[ 120], | 99.99th=[ 120] bw ( KiB/s): min= 191, max= 896, per=24.34%, avg=395.07, stdev=177.76, samples=30 iops : min= 11, max= 56, avg=24.37, stdev=11.09, samples=30 lat (msec) : 10=23.70%, 20=41.80%, 50=29.69%, 100=4.69%, 250=0.13% cpu : usr=0.05%, sys=13.58%, ctx=1474, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1543KiB/s (1580kB/s), 374KiB/s-405KiB/s (383kB/s-415kB/s), io=23.4MiB (24.5MB), run=15340-15519msec WRITE: bw=1624KiB/s (1663kB/s), 391KiB/s-427KiB/s (400kB/s-437kB/s), io=24.6MiB (25.8MB), run=15340-15519msec 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=194827: Sun Jan 11 06:17:45 2026 read: IOPS=1, BW=1547KiB/s (1584kB/s)(7168KiB/4633msec) clat (msec): min=102, max=796, avg=345.82, stdev=302.36 lat (msec): min=102, max=796, avg=345.83, stdev=302.36 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 104], | 30.00th=[ 118], 40.00th=[ 118], 50.00th=[ 142], 60.00th=[ 472], | 70.00th=[ 472], 80.00th=[ 693], 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= 1835, max= 4087, per=58.36%, avg=2501.25, stdev=1061.65, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1105KiB/s (1132kB/s)(5120KiB/4633msec); 0 zone resets clat (msec): min=163, max=688, avg=401.15, stdev=189.03 lat (msec): min=163, max=688, avg=401.22, stdev=189.02 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 409], 80.00th=[ 409], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 1932, max= 3886, per=43.09%, avg=2585.67, stdev=1126.13, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=41.67%, 500=33.33%, 750=16.67%, 1000=8.33% cpu : usr=0.00%, sys=17.53%, ctx=618, 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=194828: Sun Jan 11 06:17:45 2026 read: IOPS=0, BW=429KiB/s (439kB/s)(2048KiB/4778msec) clat (msec): min=107, max=1013, avg=560.57, stdev=640.12 lat (msec): min=107, max=1013, avg=560.57, stdev=640.12 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 108], 10.00th=[ 108], 20.00th=[ 108], | 30.00th=[ 108], 40.00th=[ 108], 50.00th=[ 108], 60.00th=[ 1011], | 70.00th=[ 1011], 80.00th=[ 1011], 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= 1906, max= 1939, per=44.86%, avg=1922.50, stdev=23.33, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2143KiB/s (2195kB/s)(10.0MiB/4778msec); 0 zone resets clat (msec): min=69, max=875, avg=345.02, stdev=263.63 lat (msec): min=69, max=875, avg=345.11, stdev=263.64 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 159], | 30.00th=[ 167], 40.00th=[ 188], 50.00th=[ 239], 60.00th=[ 259], | 70.00th=[ 268], 80.00th=[ 558], 90.00th=[ 676], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 2048, max= 6131, per=67.30%, avg=4038.25, stdev=1670.30, samples=4 iops : min= 2, max= 5, avg= 3.50, stdev= 1.29, samples=4 lat (msec) : 100=8.33%, 250=41.67%, 500=16.67%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=19.55%, ctx=162, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=194829: Sun Jan 11 06:17:45 2026 read: IOPS=1, BW=1360KiB/s (1393kB/s)(6144KiB/4517msec) clat (msec): min=78, max=341, avg=177.33, stdev=101.29 lat (msec): min=78, max=341, avg=177.34, stdev=101.29 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 97], | 30.00th=[ 97], 40.00th=[ 138], 50.00th=[ 138], 60.00th=[ 155], | 70.00th=[ 255], 80.00th=[ 255], 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= 1939, max= 3886, per=61.19%, avg=2622.67, stdev=1095.31, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1360KiB/s (1393kB/s)(6144KiB/4517msec); 0 zone resets clat (msec): min=153, max=1106, avg=539.56, stdev=385.00 lat (msec): min=153, max=1106, avg=539.63, stdev=385.00 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 155], 10.00th=[ 155], 20.00th=[ 186], | 30.00th=[ 186], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 518], | 70.00th=[ 885], 80.00th=[ 885], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 1906, max= 2048, per=32.93%, avg=1975.80, stdev=65.25, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=25.00%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=16.81%, ctx=111, 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=194830: Sun Jan 11 06:17:45 2026 read: IOPS=1, BW=1175KiB/s (1204kB/s)(5120KiB/4356msec) clat (msec): min=90, max=365, avg=188.27, stdev=105.05 lat (msec): min=90, max=365, avg=188.27, stdev=105.05 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 91], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 159], 60.00th=[ 159], | 70.00th=[ 188], 80.00th=[ 188], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 3878, max= 4087, per=92.92%, avg=3982.50, stdev=147.79, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1646KiB/s (1685kB/s)(7168KiB/4356msec); 0 zone resets clat (msec): min=168, max=1198, avg=459.19, stdev=354.62 lat (msec): min=168, max=1199, avg=459.29, stdev=354.63 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 190], | 30.00th=[ 284], 40.00th=[ 284], 50.00th=[ 351], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 550], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 1932, max= 3886, per=39.81%, avg=2388.80, stdev=838.33, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=23.86%, ctx=196, 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=4286KiB/s (4389kB/s), 429KiB/s-1547KiB/s (439kB/s-1584kB/s), io=20.0MiB (20.0MB), run=4356-4778msec WRITE: bw=6001KiB/s (6145kB/s), 1105KiB/s-2143KiB/s (1132kB/s-2195kB/s), io=28.0MiB (29.4MB), run=4356-4778msec rand-rw: (groupid=0, jobs=1): err= 0: pid=194822: Sun Jan 11 06:17:45 2026 read: IOPS=1, BW=1833KiB/s (1877kB/s)(7168KiB/3911msec) clat (usec): min=1244, max=407437, avg=245481.36, stdev=135408.32 lat (usec): min=1245, max=407439, avg=245482.43, stdev=135408.73 clat percentiles (usec): | 1.00th=[ 1237], 5.00th=[ 1237], 10.00th=[ 1237], 20.00th=[162530], | 30.00th=[208667], 40.00th=[208667], 50.00th=[270533], 60.00th=[333448], | 70.00th=[333448], 80.00th=[333448], 90.00th=[408945], 95.00th=[408945], | 99.00th=[408945], 99.50th=[408945], 99.90th=[408945], 99.95th=[408945], | 99.99th=[408945] bw ( KiB/s): min= 1917, max= 3524, per=59.52%, avg=2306.40, stdev=682.68, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=1, BW=1309KiB/s (1341kB/s)(5120KiB/3911msec); 0 zone resets clat (msec): min=388, max=469, avg=433.96, stdev=29.71 lat (msec): min=389, max=469, avg=434.02, stdev=29.71 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 439], 60.00th=[ 439], | 70.00th=[ 447], 80.00th=[ 447], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] bw ( KiB/s): min= 1855, max= 3871, per=47.77%, avg=2591.33, stdev=1112.42, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 lat (msec) : 2=8.33%, 250=16.67%, 500=75.00% cpu : usr=0.03%, sys=56.62%, ctx=718, 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=194823: Sun Jan 11 06:17:45 2026 read: IOPS=0, BW=388KiB/s (397kB/s)(2048KiB/5285msec) clat (usec): min=1220, max=187838, avg=94529.47, stdev=131959.24 lat (usec): min=1221, max=187842, avg=94531.84, stdev=131960.52 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1221], 10.00th=[ 1221], 20.00th=[ 1221], | 30.00th=[ 1221], 40.00th=[ 1221], 50.00th=[ 1221], 60.00th=[187696], | 70.00th=[187696], 80.00th=[187696], 90.00th=[187696], 95.00th=[187696], | 99.00th=[187696], 99.50th=[187696], 99.90th=[187696], 99.95th=[187696], | 99.99th=[187696] bw ( KiB/s): min= 1718, max= 1935, per=47.14%, avg=1826.50, stdev=153.44, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1938KiB/s (1984kB/s)(10.0MiB/5285msec); 0 zone resets clat (msec): min=216, max=902, avg=508.52, stdev=255.35 lat (msec): min=216, max=902, avg=508.60, stdev=255.34 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 271], | 30.00th=[ 305], 40.00th=[ 313], 50.00th=[ 405], 60.00th=[ 485], | 70.00th=[ 558], 80.00th=[ 768], 90.00th=[ 869], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 1855, max= 4096, per=41.34%, avg=2242.75, stdev=752.18, samples=8 iops : min= 1, max= 4, avg= 1.62, stdev= 1.06, samples=8 lat (msec) : 2=8.33%, 250=16.67%, 500=41.67%, 750=8.33%, 1000=25.00% cpu : usr=0.02%, sys=45.21%, ctx=605, 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=194824: Sun Jan 11 06:17:45 2026 read: IOPS=1, BW=1331KiB/s (1363kB/s)(6144KiB/4615msec) clat (usec): min=992, max=346774, avg=144358.17, stdev=160440.52 lat (usec): min=994, max=346776, avg=144359.15, stdev=160440.56 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 996], 10.00th=[ 996], 20.00th=[ 1012], | 30.00th=[ 1012], 40.00th=[ 1090], 50.00th=[ 1090], 60.00th=[248513], | 70.00th=[270533], 80.00th=[270533], 90.00th=[346031], 95.00th=[346031], | 99.00th=[346031], 99.50th=[346031], 99.90th=[346031], 99.95th=[346031], | 99.99th=[346031] bw ( KiB/s): min= 2043, max= 3835, per=82.48%, avg=3196.00, stdev=1000.48, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1331KiB/s (1363kB/s)(6144KiB/4615msec); 0 zone resets clat (msec): min=299, max=1093, avg=619.83, stdev=296.59 lat (msec): min=299, max=1093, avg=619.89, stdev=296.59 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 300], 10.00th=[ 300], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 625], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 1715, max= 2000, per=34.74%, avg=1884.40, stdev=107.87, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (usec) : 1000=8.33% lat (msec) : 2=16.67%, 250=8.33%, 500=33.33%, 750=16.67%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.04%, sys=41.98%, ctx=560, 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=194825: Sun Jan 11 06:17:45 2026 read: IOPS=1, BW=1267KiB/s (1298kB/s)(5120KiB/4040msec) clat (usec): min=993, max=633608, avg=177958.99, stdev=271256.41 lat (usec): min=993, max=633609, avg=177959.98, stdev=271256.51 clat percentiles (usec): | 1.00th=[ 996], 5.00th=[ 996], 10.00th=[ 996], 20.00th=[ 996], | 30.00th=[ 1385], 40.00th=[ 1385], 50.00th=[ 29492], 60.00th=[ 29492], | 70.00th=[223347], 80.00th=[223347], 90.00th=[633340], 95.00th=[633340], | 99.00th=[633340], 99.50th=[633340], 99.90th=[633340], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 1935, max= 5565, per=96.77%, avg=3750.00, stdev=2566.80, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1774KiB/s (1817kB/s)(7168KiB/4040msec); 0 zone resets clat (msec): min=247, max=677, avg=445.75, stdev=150.53 lat (msec): min=247, max=677, avg=445.82, stdev=150.52 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 247], 10.00th=[ 247], 20.00th=[ 313], | 30.00th=[ 384], 40.00th=[ 384], 50.00th=[ 414], 60.00th=[ 514], | 70.00th=[ 514], 80.00th=[ 567], 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= 1777, max= 4096, per=45.31%, avg=2458.25, stdev=1097.23, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (usec) : 1000=8.33% lat (msec) : 2=8.33%, 50=8.33%, 250=16.67%, 500=25.00%, 750=33.33% cpu : usr=0.00%, sys=49.69%, ctx=479, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3875KiB/s (3968kB/s), 388KiB/s-1833KiB/s (397kB/s-1877kB/s), io=20.0MiB (20.0MB), run=3911-5285msec WRITE: bw=5425KiB/s (5555kB/s), 1309KiB/s-1938KiB/s (1341kB/s-1984kB/s), io=28.0MiB (29.4MB), run=3911-5285msec 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=194836: Sun Jan 11 06:17:57 2026 read: IOPS=1, BW=4341KiB/s (4445kB/s)(12.0MiB/2831msec) clat (msec): min=210, max=1605, avg=937.17, stdev=699.14 lat (msec): min=210, max=1605, avg=937.17, stdev=699.14 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 211], 10.00th=[ 211], 20.00th=[ 211], | 30.00th=[ 211], 40.00th=[ 995], 50.00th=[ 995], 60.00th=[ 995], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 7876, max= 8192, per=100.00%, avg=8034.00, stdev=223.45, 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=0.00%, sys=15.12%, ctx=76, 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=194837: Sun Jan 11 06:17:57 2026 read: IOPS=0, BW=1258KiB/s (1288kB/s)(4096KiB/3256msec) clat (nsec): min=939358k, max=939358k, avg=939357923.00, stdev= 0.00 lat (nsec): min=939359k, max=939359k, avg=939359257.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 936], 5.00th=[ 936], 10.00th=[ 936], 20.00th=[ 936], | 30.00th=[ 936], 40.00th=[ 936], 50.00th=[ 936], 60.00th=[ 936], | 70.00th=[ 936], 80.00th=[ 936], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2516KiB/s (2576kB/s)(8192KiB/3256msec); 0 zone resets clat (msec): min=830, max=1460, avg=1145.49, stdev=445.24 lat (msec): min=831, max=1460, avg=1145.81, stdev=445.21 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 1469], | 70.00th=[ 1469], 80.00th=[ 1469], 90.00th=[ 1469], 95.00th=[ 1469], | 99.00th=[ 1469], 99.50th=[ 1469], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 8175, max= 8175, per=81.68%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 1000=66.67%, 2000=33.33% cpu : usr=0.00%, sys=17.48%, ctx=137, 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=194838: Sun Jan 11 06:17:57 2026 write: IOPS=0, BW=3753KiB/s (3843kB/s)(12.0MiB/3274msec); 0 zone resets clat (msec): min=258, max=2104, avg=1080.16, stdev=939.63 lat (msec): min=258, max=2104, avg=1080.53, stdev=939.68 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 877], 50.00th=[ 877], 60.00th=[ 877], | 70.00th=[ 2106], 80.00th=[ 2106], 90.00th=[ 2106], 95.00th=[ 2106], | 99.00th=[ 2106], 99.50th=[ 2106], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 8175, max= 8192, per=81.77%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.06%, sys=17.69%, ctx=85, 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=194839: Sun Jan 11 06:17:57 2026 write: IOPS=1, BW=5063KiB/s (5185kB/s)(12.0MiB/2427msec); 0 zone resets clat (msec): min=160, max=1742, avg=802.87, stdev=831.69 lat (msec): min=161, max=1742, avg=803.24, stdev=831.70 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 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= 7922, max= 8192, per=80.51%, avg=8057.00, stdev=190.92, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=17.89%, ctx=66, 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=5032KiB/s (5153kB/s), 1258KiB/s-4341KiB/s (1288kB/s-4445kB/s), io=16.0MiB (16.8MB), run=2831-3256msec WRITE: bw=9.77MiB/s (10.2MB/s), 2516KiB/s-5063KiB/s (2576kB/s-5185kB/s), io=32.0MiB (33.6MB), run=2427-3274msec rand-rw: (groupid=0, jobs=1): err= 0: pid=194841: Sun Jan 11 06:17:57 2026 read: IOPS=1, BW=5059KiB/s (5180kB/s)(12.0MiB/2429msec) clat (msec): min=663, max=905, avg=809.18, stdev=128.29 lat (msec): min=663, max=905, avg=809.19, stdev=128.29 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 860], 50.00th=[ 860], 60.00th=[ 860], | 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= 5673, max= 8192, per=100.00%, avg=6932.50, stdev=1781.20, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 1000=66.67% cpu : usr=0.00%, sys=61.74%, ctx=2748, 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=194842: Sun Jan 11 06:17:57 2026 read: IOPS=0, BW=1862KiB/s (1907kB/s)(4096KiB/2200msec) clat (nsec): min=669660k, max=669660k, avg=669659559.00, stdev= 0.00 lat (nsec): min=669660k, max=669660k, avg=669660377.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 5626, max= 5626, per=83.41%, avg=5626.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3724KiB/s (3813kB/s)(8192KiB/2200msec); 0 zone resets clat (msec): min=617, max=910, avg=764.18, stdev=207.09 lat (msec): min=617, max=910, avg=764.40, stdev=207.07 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 911], | 70.00th=[ 911], 80.00th=[ 911], 90.00th=[ 911], 95.00th=[ 911], | 99.00th=[ 911], 99.50th=[ 911], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 8192, max= 8192, per=81.60%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=29.06%, ctx=964, 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=194843: Sun Jan 11 06:17:57 2026 write: IOPS=0, BW=3765KiB/s (3855kB/s)(12.0MiB/3264msec); 0 zone resets clat (msec): min=101, max=2598, avg=1087.47, stdev=1328.57 lat (msec): min=101, max=2598, avg=1087.71, stdev=1328.51 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 102], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 2601], 80.00th=[ 2601], 90.00th=[ 2601], 95.00th=[ 2601], | 99.00th=[ 2601], 99.50th=[ 2601], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 8126, max= 8126, per=80.94%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=12.72%, 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=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=194844: Sun Jan 11 06:17:57 2026 write: IOPS=1, BW=4334KiB/s (4438kB/s)(12.0MiB/2835msec); 0 zone resets clat (msec): min=280, max=2041, avg=944.28, stdev=957.05 lat (msec): min=281, max=2041, avg=944.48, stdev=957.02 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[ 2039], 80.00th=[ 2039], 90.00th=[ 2039], 95.00th=[ 2039], | 99.00th=[ 2039], 99.50th=[ 2039], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 5843, max= 8126, per=69.57%, avg=6984.50, stdev=1614.32, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.04%, sys=22.62%, ctx=90, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6745KiB/s (6907kB/s), 1862KiB/s-5059KiB/s (1907kB/s-5180kB/s), io=16.0MiB (16.8MB), run=2200-2429msec WRITE: bw=9.80MiB/s (10.3MB/s), 3724KiB/s-4334KiB/s (3813kB/s-4438kB/s), io=32.0MiB (33.6MB), run=2200-3264msec