== sanity test 398b: DIO and buffer IO race ============== 05:06:08 (1787735168) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.37166 s, 9.4 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=174506: Wed Aug 26 05:08:19 2026 read: IOPS=13, BW=53.7KiB/s (55.0kB/s)(5992KiB/111515msec) clat (usec): min=33, max=735365, avg=36202.09, stdev=35005.17 lat (usec): min=34, max=735366, avg=36204.34, stdev=35004.23 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 57], 10.00th=[ 71], 20.00th=[ 15401], | 30.00th=[ 20055], 40.00th=[ 24249], 50.00th=[ 29230], 60.00th=[ 36439], | 70.00th=[ 44827], 80.00th=[ 54264], 90.00th=[ 71828], 95.00th=[ 87557], | 99.00th=[141558], 99.50th=[198181], 99.90th=[299893], 99.95th=[734004], | 99.99th=[734004] bw ( KiB/s): min= 7, max= 127, per=25.38%, avg=53.56, stdev=22.12, samples=219 iops : min= 1, max= 31, avg=12.74, stdev= 5.55, samples=219 write: IOPS=14, BW=56.5KiB/s (57.8kB/s)(6296KiB/111515msec); 0 zone resets clat (usec): min=905, max=251607, avg=36148.73, stdev=36024.36 lat (usec): min=906, max=251608, avg=36152.42, stdev=36025.59 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1221], 10.00th=[ 1663], 20.00th=[ 3654], | 30.00th=[ 6980], 40.00th=[ 16319], 50.00th=[ 27395], 60.00th=[ 38011], | 70.00th=[ 47973], 80.00th=[ 65274], 90.00th=[ 85459], 95.00th=[104334], | 99.00th=[145753], 99.50th=[173016], 99.90th=[208667], 99.95th=[250610], | 99.99th=[250610] bw ( KiB/s): min= 7, max= 111, per=25.47%, avg=56.30, stdev=22.10, samples=219 iops : min= 1, max= 27, avg=13.42, stdev= 5.55, samples=219 lat (usec) : 50=0.72%, 100=5.27%, 250=0.46%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=6.32%, 4=4.59%, 10=7.03%, 20=12.08%, 50=36.49% lat (msec) : 100=22.36%, 250=4.36%, 500=0.07%, 750=0.03% cpu : usr=0.08%, sys=5.57%, ctx=6513, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174507: Wed Aug 26 05:08:19 2026 read: IOPS=13, BW=53.1KiB/s (54.3kB/s)(5940KiB/111915msec) clat (usec): min=29, max=320816, avg=34263.37, stdev=27329.95 lat (usec): min=29, max=320818, avg=34265.97, stdev=27329.12 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 58], 10.00th=[ 70], 20.00th=[ 15008], | 30.00th=[ 20055], 40.00th=[ 24249], 50.00th=[ 29230], 60.00th=[ 34341], | 70.00th=[ 43254], 80.00th=[ 52691], 90.00th=[ 66847], 95.00th=[ 81265], | 99.00th=[113771], 99.50th=[139461], 99.90th=[278922], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 5, max= 126, per=25.17%, avg=53.10, stdev=22.74, samples=218 iops : min= 1, max= 31, avg=12.62, stdev= 5.71, samples=218 write: IOPS=14, BW=56.7KiB/s (58.1kB/s)(6348KiB/111915msec); 0 zone resets clat (usec): min=933, max=678942, avg=38191.37, stdev=43916.93 lat (usec): min=934, max=678943, avg=38204.86, stdev=43934.03 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1205], 10.00th=[ 1647], 20.00th=[ 3916], | 30.00th=[ 7701], 40.00th=[ 16712], 50.00th=[ 27395], 60.00th=[ 38011], | 70.00th=[ 49546], 80.00th=[ 65799], 90.00th=[ 89654], 95.00th=[113771], | 99.00th=[173016], 99.50th=[191890], 99.90th=[666895], 99.95th=[675283], | 99.99th=[675283] bw ( KiB/s): min= 7, max= 127, per=25.40%, avg=56.14, stdev=21.59, samples=220 iops : min= 1, max= 31, avg=13.39, stdev= 5.44, samples=220 lat (usec) : 50=0.81%, 100=4.98%, 250=0.65%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.10% lat (msec) : 2=6.32%, 4=4.20%, 10=7.00%, 20=12.04%, 50=37.01% lat (msec) : 100=21.55%, 250=4.95%, 500=0.10%, 750=0.07% cpu : usr=0.09%, sys=5.72%, ctx=6578, 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=174509: Wed Aug 26 05:08:19 2026 read: IOPS=13, BW=54.2KiB/s (55.5kB/s)(6028KiB/111312msec) clat (usec): min=26, max=727901, avg=34501.90, stdev=34100.42 lat (usec): min=26, max=727902, avg=34503.35, stdev=34100.45 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 57], 10.00th=[ 67], 20.00th=[ 13566], | 30.00th=[ 19530], 40.00th=[ 24249], 50.00th=[ 29492], 60.00th=[ 34866], | 70.00th=[ 42206], 80.00th=[ 52167], 90.00th=[ 67634], 95.00th=[ 84411], | 99.00th=[123208], 99.50th=[149947], 99.90th=[333448], 99.95th=[725615], | 99.99th=[725615] bw ( KiB/s): min= 5, max= 111, per=25.49%, avg=53.79, stdev=22.25, samples=219 iops : min= 1, max= 27, avg=12.80, stdev= 5.60, samples=219 write: IOPS=14, BW=56.2KiB/s (57.6kB/s)(6260KiB/111312msec); 0 zone resets clat (usec): min=934, max=396780, avg=37652.19, stdev=39024.81 lat (usec): min=959, max=396781, avg=37657.33, stdev=39024.98 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1221], 10.00th=[ 1844], 20.00th=[ 3851], | 30.00th=[ 7373], 40.00th=[ 17957], 50.00th=[ 27657], 60.00th=[ 36963], | 70.00th=[ 50070], 80.00th=[ 66847], 90.00th=[ 90702], 95.00th=[110625], | 99.00th=[162530], 99.50th=[179307], 99.90th=[333448], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 7, max= 119, per=25.25%, avg=55.80, stdev=21.53, samples=219 iops : min= 1, max= 29, avg=13.31, stdev= 5.41, samples=219 lat (usec) : 50=0.81%, 100=5.50%, 250=0.59%, 500=0.29%, 750=0.10% lat (usec) : 1000=0.13% lat (msec) : 2=5.73%, 4=4.92%, 10=7.13%, 20=11.65%, 50=37.21% lat (msec) : 100=21.26%, 250=4.49%, 500=0.16%, 750=0.03% cpu : usr=0.07%, sys=5.30%, ctx=6300, 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=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=174512: Wed Aug 26 05:08:19 2026 read: IOPS=13, BW=53.2KiB/s (54.5kB/s)(6052KiB/113677msec) clat (usec): min=32, max=618666, avg=35670.30, stdev=33586.89 lat (usec): min=32, max=618667, avg=35672.44, stdev=33587.64 clat percentiles (usec): | 1.00th=[ 38], 5.00th=[ 56], 10.00th=[ 63], 20.00th=[ 14746], | 30.00th=[ 19792], 40.00th=[ 24249], 50.00th=[ 28967], 60.00th=[ 35914], | 70.00th=[ 44303], 80.00th=[ 55313], 90.00th=[ 70779], 95.00th=[ 85459], | 99.00th=[132645], 99.50th=[200279], 99.90th=[287310], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 5, max= 157, per=25.12%, avg=53.01, stdev=22.58, samples=223 iops : min= 1, max= 39, avg=12.61, stdev= 5.69, samples=223 write: IOPS=13, BW=54.9KiB/s (56.2kB/s)(6236KiB/113677msec); 0 zone resets clat (usec): min=977, max=314896, avg=38035.98, stdev=39184.41 lat (usec): min=978, max=314898, avg=38039.31, stdev=39184.82 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1205], 10.00th=[ 1614], 20.00th=[ 3589], | 30.00th=[ 7111], 40.00th=[ 16450], 50.00th=[ 28443], 60.00th=[ 38536], | 70.00th=[ 50594], 80.00th=[ 67634], 90.00th=[ 91751], 95.00th=[113771], | 99.00th=[160433], 99.50th=[193987], 99.90th=[270533], 99.95th=[316670], | 99.99th=[316670] bw ( KiB/s): min= 7, max= 120, per=24.58%, avg=54.31, stdev=21.50, samples=224 iops : min= 1, max= 30, avg=12.93, stdev= 5.43, samples=224 lat (usec) : 50=0.98%, 100=5.53%, 250=0.29%, 500=0.20%, 750=0.13% lat (usec) : 1000=0.10% lat (msec) : 2=6.05%, 4=4.95%, 10=7.23%, 20=10.94%, 50=36.20% lat (msec) : 100=22.07%, 250=5.11%, 500=0.20%, 750=0.03% cpu : usr=0.07%, sys=5.52%, ctx=6522, 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=211KiB/s (216kB/s), 53.1KiB/s-54.2KiB/s (54.3kB/s-55.5kB/s), io=23.4MiB (24.6MB), run=111312-113677msec WRITE: bw=221KiB/s (226kB/s), 54.9KiB/s-56.7KiB/s (56.2kB/s-58.1kB/s), io=24.6MiB (25.7MB), run=111312-113677msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174508: Wed Aug 26 05:10:40 2026 read: IOPS=5, BW=23.6KiB/s (24.2kB/s)(5992KiB/254021msec) clat (msec): min=5, max=723, avg=32.18, stdev=37.83 lat (msec): min=5, max=723, avg=32.18, stdev=37.83 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 42], 90.00th=[ 71], 95.00th=[ 101], | 99.00th=[ 171], 99.50th=[ 197], 99.90th=[ 451], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 95, per=27.84%, avg=26.17, stdev=17.66, samples=442 iops : min= 1, max= 23, avg= 5.90, stdev= 4.46, samples=442 write: IOPS=6, BW=24.8KiB/s (25.4kB/s)(6296KiB/254021msec); 0 zone resets clat (msec): min=38, max=533, avg=130.55, stdev=53.87 lat (msec): min=38, max=533, avg=130.56, stdev=53.87 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 65], 10.00th=[ 74], 20.00th=[ 87], | 30.00th=[ 97], 40.00th=[ 109], 50.00th=[ 121], 60.00th=[ 132], | 70.00th=[ 148], 80.00th=[ 169], 90.00th=[ 201], 95.00th=[ 230], | 99.00th=[ 300], 99.50th=[ 321], 99.90th=[ 498], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 7, max= 48, per=24.89%, avg=24.39, stdev= 9.63, samples=497 iops : min= 1, max= 12, avg= 5.45, stdev= 2.44, samples=497 lat (msec) : 10=5.24%, 20=17.97%, 50=18.68%, 100=21.03%, 250=35.29% lat (msec) : 500=1.73%, 750=0.07% cpu : usr=0.04%, sys=1.13%, ctx=4993, 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=174510: Wed Aug 26 05:10:40 2026 read: IOPS=5, BW=23.3KiB/s (23.9kB/s)(5940KiB/254784msec) clat (msec): min=5, max=724, avg=31.59, stdev=39.35 lat (msec): min=5, max=724, avg=31.59, stdev=39.35 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 41], 90.00th=[ 66], 95.00th=[ 93], | 99.00th=[ 167], 99.50th=[ 192], 99.90th=[ 625], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 112, per=27.97%, avg=26.29, stdev=17.67, samples=437 iops : min= 1, max= 28, avg= 5.93, stdev= 4.47, samples=437 write: IOPS=6, BW=24.9KiB/s (25.5kB/s)(6348KiB/254784msec); 0 zone resets clat (msec): min=34, max=413, avg=130.75, stdev=56.18 lat (msec): min=34, max=413, avg=130.76, stdev=56.19 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 63], 10.00th=[ 72], 20.00th=[ 87], | 30.00th=[ 99], 40.00th=[ 109], 50.00th=[ 120], 60.00th=[ 132], | 70.00th=[ 146], 80.00th=[ 169], 90.00th=[ 205], 95.00th=[ 241], | 99.00th=[ 326], 99.50th=[ 384], 99.90th=[ 405], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 7, max= 63, per=24.83%, avg=24.34, stdev=10.32, samples=503 iops : min= 1, max= 15, avg= 5.44, stdev= 2.63, samples=503 lat (msec) : 10=4.88%, 20=18.88%, 50=18.00%, 100=20.57%, 250=35.51% lat (msec) : 500=2.08%, 750=0.07% cpu : usr=0.04%, sys=1.08%, ctx=5006, 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=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=174511: Wed Aug 26 05:10:40 2026 read: IOPS=5, BW=23.7KiB/s (24.3kB/s)(6028KiB/254243msec) clat (msec): min=5, max=732, avg=31.77, stdev=35.65 lat (msec): min=5, max=732, avg=31.77, stdev=35.65 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 45], 90.00th=[ 69], 95.00th=[ 88], | 99.00th=[ 140], 99.50th=[ 169], 99.90th=[ 451], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 95, per=26.88%, avg=25.27, stdev=17.13, samples=461 iops : min= 1, max= 23, avg= 5.68, stdev= 4.32, samples=461 write: IOPS=6, BW=24.6KiB/s (25.2kB/s)(6260KiB/254243msec); 0 zone resets clat (msec): min=39, max=738, avg=131.64, stdev=57.30 lat (msec): min=39, max=738, avg=131.64, stdev=57.30 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 66], 10.00th=[ 74], 20.00th=[ 88], | 30.00th=[ 100], 40.00th=[ 109], 50.00th=[ 121], 60.00th=[ 132], | 70.00th=[ 148], 80.00th=[ 169], 90.00th=[ 201], 95.00th=[ 236], | 99.00th=[ 321], 99.50th=[ 384], 99.90th=[ 542], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 48, per=24.70%, avg=24.20, stdev= 9.76, samples=499 iops : min= 1, max= 12, avg= 5.40, stdev= 2.49, samples=499 lat (msec) : 10=4.65%, 20=18.52%, 50=17.90%, 100=22.27%, 250=34.60% lat (msec) : 500=1.95%, 750=0.10% cpu : usr=0.05%, sys=1.09%, ctx=4999, 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=174513: Wed Aug 26 05:10:40 2026 read: IOPS=5, BW=23.9KiB/s (24.5kB/s)(6052KiB/253291msec) clat (msec): min=5, max=451, avg=31.47, stdev=31.96 lat (msec): min=5, max=451, avg=31.47, stdev=31.96 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 43], 90.00th=[ 70], 95.00th=[ 91], | 99.00th=[ 161], 99.50th=[ 197], 99.90th=[ 338], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 7, max= 119, per=28.53%, avg=26.81, stdev=17.50, samples=437 iops : min= 1, max= 29, avg= 6.07, stdev= 4.40, samples=437 write: IOPS=6, BW=24.6KiB/s (25.2kB/s)(6236KiB/253291msec); 0 zone resets clat (msec): min=32, max=686, avg=131.67, stdev=57.76 lat (msec): min=32, max=686, avg=131.67, stdev=57.76 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 65], 10.00th=[ 73], 20.00th=[ 87], | 30.00th=[ 99], 40.00th=[ 108], 50.00th=[ 118], 60.00th=[ 133], | 70.00th=[ 148], 80.00th=[ 169], 90.00th=[ 205], 95.00th=[ 243], | 99.00th=[ 321], 99.50th=[ 334], 99.90th=[ 518], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 56, per=24.53%, avg=24.04, stdev= 9.70, samples=500 iops : min= 1, max= 14, avg= 5.37, stdev= 2.48, samples=500 lat (msec) : 10=4.43%, 20=19.08%, 50=18.33%, 100=21.65%, 250=34.31% lat (msec) : 500=2.15%, 750=0.07% cpu : usr=0.05%, sys=1.09%, ctx=5129, 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=94.2KiB/s (96.5kB/s), 23.3KiB/s-23.9KiB/s (23.9kB/s-24.5kB/s), io=23.4MiB (24.6MB), run=253291-254784msec WRITE: bw=98.7KiB/s (101kB/s), 24.6KiB/s-24.9KiB/s (25.2kB/s-25.5kB/s), io=24.6MiB (25.7MB), run=253291-254784msec 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=174560: Wed Aug 26 05:11:14 2026 read: IOPS=15, BW=242KiB/s (248kB/s)(5920KiB/24440msec) clat (usec): min=39, max=231653, avg=34808.40, stdev=26890.49 lat (usec): min=40, max=231653, avg=34809.96, stdev=26891.29 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 56], 10.00th=[ 65], 20.00th=[ 14484], | 30.00th=[ 21890], 40.00th=[ 27132], 50.00th=[ 32637], 60.00th=[ 38011], | 70.00th=[ 42206], 80.00th=[ 51119], 90.00th=[ 65799], 95.00th=[ 79168], | 99.00th=[126354], 99.50th=[143655], 99.90th=[231736], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 95, max= 443, per=24.56%, avg=240.65, stdev=70.02, samples=48 iops : min= 5, max= 27, avg=14.27, stdev= 4.42, samples=48 write: IOPS=16, BW=261KiB/s (267kB/s)(6368KiB/24440msec); 0 zone resets clat (usec): min=1324, max=177912, avg=28678.62, stdev=29606.54 lat (usec): min=1324, max=177914, avg=28681.53, stdev=29606.32 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1680], 10.00th=[ 2057], 20.00th=[ 3490], | 30.00th=[ 5932], 40.00th=[ 10421], 50.00th=[ 16909], 60.00th=[ 30016], | 70.00th=[ 41681], 80.00th=[ 51119], 90.00th=[ 66323], 95.00th=[ 81265], | 99.00th=[143655], 99.50th=[166724], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 62, max= 573, per=25.24%, avg=260.21, stdev=106.03, samples=48 iops : min= 3, max= 35, avg=15.46, stdev= 6.67, samples=48 lat (usec) : 50=0.91%, 100=6.25%, 250=0.65%, 500=0.13% lat (msec) : 2=4.82%, 4=7.42%, 10=8.98%, 20=10.42%, 50=38.80% lat (msec) : 100=20.05%, 250=1.56% cpu : usr=0.09%, sys=5.81%, ctx=1548, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174561: Wed Aug 26 05:11:14 2026 read: IOPS=15, BW=249KiB/s (255kB/s)(5744KiB/23075msec) clat (usec): min=46, max=256067, avg=35545.82, stdev=30231.07 lat (usec): min=46, max=256068, avg=35546.97, stdev=30231.05 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 63], 10.00th=[ 77], 20.00th=[ 17957], | 30.00th=[ 23462], 40.00th=[ 26870], 50.00th=[ 31065], 60.00th=[ 35390], | 70.00th=[ 40109], 80.00th=[ 49546], 90.00th=[ 65274], 95.00th=[ 80217], | 99.00th=[198181], 99.50th=[206570], 99.90th=[256902], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 59, max= 447, per=25.26%, avg=247.56, stdev=104.04, samples=45 iops : min= 3, max= 27, avg=14.69, stdev= 6.50, samples=45 write: IOPS=17, BW=284KiB/s (290kB/s)(6544KiB/23075msec); 0 zone resets clat (usec): min=1376, max=163917, avg=24813.29, stdev=27612.09 lat (usec): min=1379, max=163918, avg=24815.28, stdev=27612.11 clat percentiles (usec): | 1.00th=[ 1450], 5.00th=[ 1614], 10.00th=[ 1991], 20.00th=[ 3326], | 30.00th=[ 5473], 40.00th=[ 7898], 50.00th=[ 12387], 60.00th=[ 21890], | 70.00th=[ 30540], 80.00th=[ 45351], 90.00th=[ 66323], 95.00th=[ 77071], | 99.00th=[111674], 99.50th=[130548], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 31, max= 500, per=27.29%, avg=281.36, stdev=105.31, samples=45 iops : min= 1, max= 31, avg=16.84, stdev= 6.66, samples=45 lat (usec) : 50=0.13%, 100=4.95%, 250=0.39%, 500=0.39% lat (msec) : 2=5.47%, 4=6.90%, 10=12.11%, 20=11.46%, 50=39.71% lat (msec) : 100=15.76%, 250=2.60%, 500=0.13% cpu : usr=0.08%, sys=6.85%, ctx=1530, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174562: Wed Aug 26 05:11:14 2026 read: IOPS=16, BW=267KiB/s (273kB/s)(6256KiB/23451msec) clat (usec): min=38, max=168332, avg=33188.69, stdev=25333.52 lat (usec): min=38, max=168333, avg=33189.85, stdev=25333.52 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 58], 10.00th=[ 73], 20.00th=[ 13304], | 30.00th=[ 20841], 40.00th=[ 25560], 50.00th=[ 30278], 60.00th=[ 35914], | 70.00th=[ 43254], 80.00th=[ 52167], 90.00th=[ 62129], 95.00th=[ 79168], | 99.00th=[121111], 99.50th=[135267], 99.90th=[168821], 99.95th=[168821], | 99.99th=[168821] bw ( KiB/s): min= 31, max= 477, per=27.40%, avg=268.50, stdev=86.99, samples=46 iops : min= 1, max= 29, avg=16.04, stdev= 5.46, samples=46 write: IOPS=16, BW=257KiB/s (263kB/s)(6032KiB/23451msec); 0 zone resets clat (usec): min=1444, max=291542, avg=27617.08, stdev=31426.46 lat (usec): min=1445, max=291543, avg=27619.12, stdev=31426.42 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1827], 10.00th=[ 2409], 20.00th=[ 4948], | 30.00th=[ 8029], 40.00th=[ 12518], 50.00th=[ 19530], 60.00th=[ 24773], | 70.00th=[ 33424], 80.00th=[ 43779], 90.00th=[ 65274], 95.00th=[ 79168], | 99.00th=[166724], 99.50th=[227541], 99.90th=[291505], 99.95th=[291505], | 99.99th=[291505] bw ( KiB/s): min= 62, max= 475, per=24.85%, avg=256.22, stdev=105.83, samples=46 iops : min= 3, max= 29, avg=15.24, stdev= 6.61, samples=46 lat (usec) : 50=0.78%, 100=6.64%, 250=1.69%, 500=0.13%, 750=0.13% lat (msec) : 2=3.52%, 4=4.43%, 10=9.90%, 20=12.76%, 50=40.62% lat (msec) : 100=17.71%, 250=1.56%, 500=0.13% cpu : usr=0.09%, sys=6.29%, ctx=1531, 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=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=174563: Wed Aug 26 05:11:14 2026 read: IOPS=15, BW=249KiB/s (255kB/s)(6032KiB/24190msec) clat (usec): min=38, max=262799, avg=34575.55, stdev=29439.37 lat (usec): min=39, max=262800, avg=34577.00, stdev=29439.62 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 58], 10.00th=[ 65], 20.00th=[ 12780], | 30.00th=[ 21890], 40.00th=[ 26870], 50.00th=[ 31327], 60.00th=[ 37487], | 70.00th=[ 43254], 80.00th=[ 51119], 90.00th=[ 66323], 95.00th=[ 81265], | 99.00th=[152044], 99.50th=[177210], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 63, max= 445, per=25.17%, avg=246.70, stdev=83.73, samples=47 iops : min= 3, max= 27, avg=14.66, stdev= 5.28, samples=47 write: IOPS=16, BW=259KiB/s (265kB/s)(6256KiB/24190msec); 0 zone resets clat (usec): min=1371, max=206566, avg=27737.24, stdev=29948.52 lat (usec): min=1373, max=206569, avg=27739.43, stdev=29948.44 clat percentiles (usec): | 1.00th=[ 1418], 5.00th=[ 1696], 10.00th=[ 2114], 20.00th=[ 4490], | 30.00th=[ 6718], 40.00th=[ 9896], 50.00th=[ 17957], 60.00th=[ 26084], | 70.00th=[ 35914], 80.00th=[ 48497], 90.00th=[ 63177], 95.00th=[ 78119], | 99.00th=[158335], 99.50th=[179307], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 128, max= 535, per=24.91%, avg=256.79, stdev=84.87, samples=47 iops : min= 8, max= 33, avg=15.30, stdev= 5.33, samples=47 lat (usec) : 50=0.39%, 100=7.16%, 250=0.91%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=5.08%, 4=4.95%, 10=11.46%, 20=10.29%, 50=39.32% lat (msec) : 100=17.32%, 250=2.47%, 500=0.13% cpu : usr=0.10%, sys=6.36%, ctx=1558, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=980KiB/s (1004kB/s), 242KiB/s-267KiB/s (248kB/s-273kB/s), io=23.4MiB (24.5MB), run=23075-24440msec WRITE: bw=1031KiB/s (1056kB/s), 257KiB/s-284KiB/s (263kB/s-290kB/s), io=24.6MiB (25.8MB), run=23075-24440msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174564: Wed Aug 26 05:11:52 2026 read: IOPS=5, BW=94.5KiB/s (96.8kB/s)(5920KiB/62615msec) clat (msec): min=8, max=249, avg=36.65, stdev=31.62 lat (msec): min=8, max=249, avg=36.65, stdev=31.62 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 33], | 70.00th=[ 39], 80.00th=[ 45], 90.00th=[ 71], 95.00th=[ 107], | 99.00th=[ 171], 99.50th=[ 190], 99.90th=[ 249], 99.95th=[ 249], | 99.99th=[ 249] bw ( KiB/s): min= 30, max= 352, per=26.74%, avg=102.14, stdev=58.92, samples=114 iops : min= 1, max= 22, avg= 5.64, stdev= 3.71, samples=114 write: IOPS=6, BW=102KiB/s (104kB/s)(6368KiB/62615msec); 0 zone resets clat (msec): min=42, max=345, avg=122.70, stdev=50.02 lat (msec): min=42, max=345, avg=122.70, stdev=50.02 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 64], 10.00th=[ 70], 20.00th=[ 80], | 30.00th=[ 90], 40.00th=[ 101], 50.00th=[ 109], 60.00th=[ 124], | 70.00th=[ 144], 80.00th=[ 163], 90.00th=[ 192], 95.00th=[ 218], | 99.00th=[ 275], 99.50th=[ 330], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 29, max= 191, per=25.14%, avg=101.06, stdev=41.03, samples=124 iops : min= 1, max= 11, avg= 5.57, stdev= 2.60, samples=124 lat (msec) : 10=0.91%, 20=14.06%, 50=25.13%, 100=25.78%, 250=33.07% lat (msec) : 500=1.04% cpu : usr=0.04%, sys=1.39%, ctx=1330, 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=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=174565: Wed Aug 26 05:11:52 2026 read: IOPS=5, BW=93.1KiB/s (95.3kB/s)(5744KiB/61691msec) clat (msec): min=7, max=234, avg=33.78, stdev=28.12 lat (msec): min=7, max=234, avg=33.78, stdev=28.12 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 43], 90.00th=[ 59], 95.00th=[ 79], | 99.00th=[ 144], 99.50th=[ 234], 99.90th=[ 234], 99.95th=[ 234], | 99.99th=[ 234] bw ( KiB/s): min= 30, max= 310, per=28.03%, avg=107.06, stdev=57.84, samples=105 iops : min= 1, max= 19, avg= 5.95, stdev= 3.63, samples=105 write: IOPS=6, BW=106KiB/s (109kB/s)(6544KiB/61691msec); 0 zone resets clat (msec): min=43, max=349, avg=120.73, stdev=51.82 lat (msec): min=43, max=349, avg=120.73, stdev=51.81 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 63], 10.00th=[ 70], 20.00th=[ 80], | 30.00th=[ 90], 40.00th=[ 97], 50.00th=[ 109], 60.00th=[ 122], | 70.00th=[ 133], 80.00th=[ 157], 90.00th=[ 197], 95.00th=[ 222], | 99.00th=[ 284], 99.50th=[ 321], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 30, max= 223, per=26.27%, avg=105.61, stdev=41.46, samples=122 iops : min= 1, max= 13, avg= 5.86, stdev= 2.70, samples=122 lat (msec) : 10=2.08%, 20=13.67%, 50=24.48%, 100=27.99%, 250=30.08% lat (msec) : 500=1.69% cpu : usr=0.03%, sys=1.36%, ctx=1330, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174566: Wed Aug 26 05:11:52 2026 read: IOPS=6, BW=104KiB/s (107kB/s)(6256KiB/59937msec) clat (msec): min=5, max=259, avg=34.73, stdev=31.95 lat (msec): min=5, max=259, avg=34.73, stdev=31.95 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 25], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 46], 90.00th=[ 63], 95.00th=[ 97], | 99.00th=[ 171], 99.50th=[ 255], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 30, max= 320, per=28.87%, avg=110.29, stdev=67.88, samples=112 iops : min= 1, max= 20, avg= 6.17, stdev= 4.30, samples=112 write: IOPS=6, BW=101KiB/s (103kB/s)(6032KiB/59937msec); 0 zone resets clat (msec): min=48, max=334, avg=122.72, stdev=49.44 lat (msec): min=48, max=334, avg=122.72, stdev=49.44 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 65], 10.00th=[ 71], 20.00th=[ 83], | 30.00th=[ 91], 40.00th=[ 102], 50.00th=[ 111], 60.00th=[ 124], | 70.00th=[ 140], 80.00th=[ 157], 90.00th=[ 192], 95.00th=[ 226], | 99.00th=[ 300], 99.50th=[ 330], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 31, max= 191, per=24.88%, avg=100.01, stdev=38.24, samples=118 iops : min= 1, max= 11, avg= 5.52, stdev= 2.47, samples=118 lat (msec) : 10=2.21%, 20=14.19%, 50=26.56%, 100=24.87%, 250=30.86% lat (msec) : 500=1.30% cpu : usr=0.04%, sys=1.44%, ctx=1445, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174567: Wed Aug 26 05:11:52 2026 read: IOPS=6, BW=97.4KiB/s (99.8kB/s)(6032KiB/61917msec) clat (msec): min=8, max=305, avg=35.97, stdev=31.22 lat (msec): min=8, max=305, avg=35.97, stdev=31.22 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 13], 20.00th=[ 17], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 38], 80.00th=[ 50], 90.00th=[ 72], 95.00th=[ 100], | 99.00th=[ 155], 99.50th=[ 176], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 31, max= 320, per=27.88%, avg=106.49, stdev=68.53, samples=110 iops : min= 1, max= 20, avg= 5.93, stdev= 4.32, samples=110 write: IOPS=6, BW=101KiB/s (103kB/s)(6256KiB/61917msec); 0 zone resets clat (msec): min=34, max=368, avg=122.96, stdev=51.89 lat (msec): min=34, max=368, avg=122.96, stdev=51.89 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 63], 10.00th=[ 74], 20.00th=[ 85], | 30.00th=[ 92], 40.00th=[ 100], 50.00th=[ 111], 60.00th=[ 122], | 70.00th=[ 138], 80.00th=[ 153], 90.00th=[ 194], 95.00th=[ 234], | 99.00th=[ 296], 99.50th=[ 309], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 30, max= 191, per=24.91%, avg=100.14, stdev=39.95, samples=122 iops : min= 1, max= 11, avg= 5.52, stdev= 2.58, samples=122 lat (msec) : 10=1.17%, 20=14.97%, 50=24.22%, 100=27.08%, 250=30.60% lat (msec) : 500=1.95% cpu : usr=0.04%, sys=1.35%, ctx=1327, 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=383KiB/s (392kB/s), 93.1KiB/s-104KiB/s (95.3kB/s-107kB/s), io=23.4MiB (24.5MB), run=59937-62615msec WRITE: bw=402KiB/s (412kB/s), 101KiB/s-106KiB/s (103kB/s-109kB/s), io=24.6MiB (25.8MB), run=59937-62615msec 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=174589: Wed Aug 26 05:12:07 2026 read: IOPS=2, BW=2135KiB/s (2186kB/s)(7168KiB/3357msec) clat (usec): min=512, max=516260, avg=274432.25, stdev=155916.11 lat (usec): min=520, max=516261, avg=274434.60, stdev=155914.05 clat percentiles (usec): | 1.00th=[ 515], 5.00th=[ 515], 10.00th=[ 515], 20.00th=[187696], | 30.00th=[278922], 40.00th=[278922], 50.00th=[299893], 60.00th=[316670], | 70.00th=[316670], 80.00th=[325059], 90.00th=[517997], 95.00th=[517997], | 99.00th=[517997], 99.50th=[517997], 99.90th=[517997], 99.95th=[517997], | 99.99th=[517997] bw ( KiB/s): min= 1868, max= 4071, per=52.76%, avg=2357.00, stdev=959.77, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1525KiB/s (1562kB/s)(5120KiB/3357msec); 0 zone resets clat (msec): min=151, max=430, avg=285.86, stdev=137.08 lat (msec): min=151, max=430, avg=285.94, stdev=137.06 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 153], | 30.00th=[ 155], 40.00th=[ 155], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 1868, max= 4096, per=42.34%, avg=2648.00, stdev=1255.25, samples=3 iops : min= 1, max= 4, avg= 2.00, stdev= 1.73, samples=3 lat (usec) : 750=8.33% lat (msec) : 250=25.00%, 500=58.33%, 750=8.33% cpu : usr=0.00%, sys=16.42%, ctx=236, 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=174590: Wed Aug 26 05:12:07 2026 read: IOPS=0, BW=447KiB/s (457kB/s)(2048KiB/4584msec) clat (usec): min=609, max=236324, avg=118467.14, stdev=166675.40 lat (usec): min=611, max=236326, avg=118468.91, stdev=166675.60 clat percentiles (usec): | 1.00th=[ 611], 5.00th=[ 611], 10.00th=[ 611], 20.00th=[ 611], | 30.00th=[ 611], 40.00th=[ 611], 50.00th=[ 611], 60.00th=[235930], | 70.00th=[235930], 80.00th=[235930], 90.00th=[235930], 95.00th=[235930], | 99.00th=[235930], 99.50th=[235930], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 1896, max= 1980, per=43.38%, avg=1938.00, stdev=59.40, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2234KiB/s (2287kB/s)(10.0MiB/4584msec); 0 zone resets clat (msec): min=73, max=1337, avg=433.87, stdev=370.16 lat (msec): min=73, max=1337, avg=433.98, stdev=370.14 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 176], | 30.00th=[ 259], 40.00th=[ 288], 50.00th=[ 292], 60.00th=[ 330], | 70.00th=[ 363], 80.00th=[ 422], 90.00th=[ 802], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 1868, max= 6144, per=51.18%, avg=3200.60, stdev=1863.41, samples=5 iops : min= 1, max= 6, avg= 2.40, stdev= 2.19, samples=5 lat (usec) : 750=8.33% lat (msec) : 100=8.33%, 250=16.67%, 500=50.00%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=12.63%, ctx=161, 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=174591: Wed Aug 26 05:12:07 2026 read: IOPS=1, BW=1347KiB/s (1379kB/s)(6144KiB/4561msec) clat (usec): min=637, max=372375, avg=155120.75, stdev=146677.90 lat (usec): min=638, max=372376, avg=155122.11, stdev=146677.49 clat percentiles (usec): | 1.00th=[ 635], 5.00th=[ 635], 10.00th=[ 635], 20.00th=[ 1254], | 30.00th=[ 1254], 40.00th=[129500], 50.00th=[129500], 60.00th=[160433], | 70.00th=[265290], 80.00th=[265290], 90.00th=[371196], 95.00th=[371196], | 99.00th=[371196], 99.50th=[371196], 99.90th=[371196], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 4096, max= 4096, per=91.69%, avg=4096.00, stdev= 0.00, samples=2 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1347KiB/s (1379kB/s)(6144KiB/4561msec); 0 zone resets clat (msec): min=237, max=1231, avg=604.50, stdev=409.53 lat (msec): min=238, max=1231, avg=604.78, stdev=409.32 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 284], 50.00th=[ 284], 60.00th=[ 701], | 70.00th=[ 902], 80.00th=[ 902], 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= 1903, max= 2048, per=31.83%, avg=1990.50, stdev=63.31, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (usec) : 750=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=33.33%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=12.11%, ctx=245, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174592: Wed Aug 26 05:12:07 2026 read: IOPS=1, BW=1378KiB/s (1411kB/s)(5120KiB/3715msec) clat (usec): min=491, max=325935, avg=190436.78, stdev=172996.16 lat (usec): min=492, max=325936, avg=190438.49, stdev=172996.39 clat percentiles (usec): | 1.00th=[ 490], 5.00th=[ 490], 10.00th=[ 490], 20.00th=[ 490], | 30.00th=[ 1844], 40.00th=[ 1844], 50.00th=[304088], 60.00th=[304088], | 70.00th=[320865], 80.00th=[320865], 90.00th=[325059], 95.00th=[325059], | 99.00th=[325059], 99.50th=[325059], 99.90th=[325059], 99.95th=[325059], | 99.99th=[325059] bw ( KiB/s): min= 2048, max= 5941, per=89.42%, avg=3994.50, stdev=2752.77, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 write: IOPS=1, BW=1929KiB/s (1976kB/s)(7168KiB/3715msec); 0 zone resets clat (msec): min=170, max=1176, avg=393.54, stdev=356.20 lat (msec): min=170, max=1176, avg=393.75, stdev=356.23 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 171], 10.00th=[ 171], 20.00th=[ 199], | 30.00th=[ 241], 40.00th=[ 241], 50.00th=[ 257], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 443], 90.00th=[ 1183], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 1812, max= 4047, per=37.77%, avg=2362.00, stdev=947.53, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (usec) : 500=8.33% lat (msec) : 2=8.33%, 250=25.00%, 500=50.00%, 2000=8.33% cpu : usr=0.00%, sys=14.65%, ctx=183, 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=4468KiB/s (4575kB/s), 447KiB/s-2135KiB/s (457kB/s-2186kB/s), io=20.0MiB (20.0MB), run=3357-4584msec WRITE: bw=6255KiB/s (6405kB/s), 1347KiB/s-2234KiB/s (1379kB/s-2287kB/s), io=28.0MiB (29.4MB), run=3357-4584msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174584: Wed Aug 26 05:12:08 2026 read: IOPS=1, BW=1965KiB/s (2013kB/s)(7168KiB/3647msec) clat (msec): min=142, max=496, avg=233.40, stdev=122.50 lat (msec): min=142, max=496, avg=233.41, stdev=122.50 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 142], 10.00th=[ 142], 20.00th=[ 157], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 180], 60.00th=[ 236], | 70.00th=[ 236], 80.00th=[ 251], 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= 1882, max= 3820, per=66.51%, avg=2354.40, stdev=821.75, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1404KiB/s (1438kB/s)(5120KiB/3647msec); 0 zone resets clat (msec): min=265, max=654, avg=386.20, stdev=164.83 lat (msec): min=265, max=654, avg=386.31, stdev=164.82 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 305], 60.00th=[ 305], | 70.00th=[ 435], 80.00th=[ 435], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 1992, max= 4047, per=51.00%, avg=2528.25, stdev=1012.72, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=50.00%, 500=41.67%, 750=8.33% cpu : usr=0.03%, sys=4.80%, ctx=60, 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=174585: Wed Aug 26 05:12:08 2026 read: IOPS=0, BW=354KiB/s (363kB/s)(2048KiB/5784msec) clat (msec): min=77, max=110, avg=94.12, stdev=23.16 lat (msec): min=77, max=110, avg=94.12, stdev=23.16 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 79], 10.00th=[ 79], 20.00th=[ 79], | 30.00th=[ 79], 40.00th=[ 79], 50.00th=[ 79], 60.00th=[ 111], | 70.00th=[ 111], 80.00th=[ 111], 90.00th=[ 111], 95.00th=[ 111], | 99.00th=[ 111], 99.50th=[ 111], 99.90th=[ 111], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 1868, max= 1965, per=54.14%, avg=1916.50, stdev=68.59, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1770KiB/s (1813kB/s)(10.0MiB/5784msec); 0 zone resets clat (msec): min=164, max=2174, avg=556.55, stdev=601.09 lat (msec): min=164, max=2174, avg=556.69, stdev=601.18 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 230], | 30.00th=[ 243], 40.00th=[ 271], 50.00th=[ 279], 60.00th=[ 284], | 70.00th=[ 550], 80.00th=[ 617], 90.00th=[ 751], 95.00th=[ 2165], | 99.00th=[ 2165], 99.50th=[ 2165], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 1868, max= 4023, per=51.12%, avg=2534.00, stdev=933.77, samples=7 iops : min= 1, max= 3, avg= 1.71, stdev= 0.95, samples=7 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=16.67%, 1000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.93%, ctx=75, 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=174586: Wed Aug 26 05:12:08 2026 read: IOPS=1, BW=1281KiB/s (1312kB/s)(6144KiB/4795msec) clat (msec): min=92, max=494, avg=214.29, stdev=141.70 lat (msec): min=92, max=494, avg=214.29, stdev=141.69 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 93], 10.00th=[ 93], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 169], 50.00th=[ 169], 60.00th=[ 180], | 70.00th=[ 190], 80.00th=[ 190], 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= 1965, max= 2031, per=56.54%, avg=2001.40, stdev=26.39, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 write: IOPS=1, BW=1281KiB/s (1312kB/s)(6144KiB/4795msec); 0 zone resets clat (msec): min=173, max=1321, avg=575.16, stdev=393.40 lat (msec): min=173, max=1321, avg=575.25, stdev=393.40 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 523], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 1318], 95.00th=[ 1318], | 99.00th=[ 1318], 99.50th=[ 1318], 99.90th=[ 1318], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 1992, max= 2039, per=40.70%, avg=2017.60, stdev=19.59, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=41.67%, 500=25.00%, 750=16.67%, 2000=8.33% cpu : usr=0.00%, sys=3.27%, ctx=67, 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=174587: Wed Aug 26 05:12:08 2026 read: IOPS=1, BW=1276KiB/s (1306kB/s)(5120KiB/4013msec) clat (msec): min=184, max=472, avg=256.71, stdev=121.45 lat (msec): min=184, max=472, avg=256.71, stdev=121.45 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 184], 10.00th=[ 184], 20.00th=[ 184], | 30.00th=[ 190], 40.00th=[ 190], 50.00th=[ 215], 60.00th=[ 215], | 70.00th=[ 222], 80.00th=[ 222], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 1996, max= 4071, per=76.18%, avg=2696.67, stdev=1190.28, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1786KiB/s (1829kB/s)(7168KiB/4013msec); 0 zone resets clat (msec): min=186, max=631, avg=382.00, stdev=181.53 lat (msec): min=186, max=631, avg=382.08, stdev=181.54 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 186], 10.00th=[ 186], 20.00th=[ 215], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 300], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 575], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1996, max= 3764, per=49.58%, avg=2457.50, stdev=871.20, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=50.00%, 500=33.33%, 750=16.67% cpu : usr=0.00%, sys=3.96%, ctx=101, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3541KiB/s (3626kB/s), 354KiB/s-1965KiB/s (363kB/s-2013kB/s), io=20.0MiB (20.0MB), run=3647-5784msec WRITE: bw=4957KiB/s (5076kB/s), 1281KiB/s-1786KiB/s (1312kB/s-1829kB/s), io=28.0MiB (29.4MB), run=3647-5784msec 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=174599: Wed Aug 26 05:12:24 2026 read: IOPS=0, BW=2714KiB/s (2779kB/s)(12.0MiB/4528msec) clat (msec): min=827, max=2757, avg=1478.50, stdev=1107.92 lat (msec): min=827, max=2757, avg=1478.50, stdev=1107.92 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 852], 50.00th=[ 852], 60.00th=[ 852], | 70.00th=[ 2769], 80.00th=[ 2769], 90.00th=[ 2769], 95.00th=[ 2769], | 99.00th=[ 2769], 99.50th=[ 2769], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=8.55%, ctx=394, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=174600: Wed Aug 26 05:12:24 2026 read: IOPS=0, BW=813KiB/s (832kB/s)(4096KiB/5039msec) clat (nsec): min=2839.9M, max=2839.9M, avg=2839905355.00, stdev= 0.00 lat (nsec): min=2839.9M, max=2839.9M, avg=2839906653.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2836], 5.00th=[ 2836], 10.00th=[ 2836], 20.00th=[ 2836], | 30.00th=[ 2836], 40.00th=[ 2836], 50.00th=[ 2836], 60.00th=[ 2836], | 70.00th=[ 2836], 80.00th=[ 2836], 90.00th=[ 2836], 95.00th=[ 2836], | 99.00th=[ 2836], 99.50th=[ 2836], 99.90th=[ 2836], 99.95th=[ 2836], | 99.99th=[ 2836] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1626KiB/s (1665kB/s)(8192KiB/5039msec); 0 zone resets clat (msec): min=335, max=1705, avg=1020.66, stdev=969.13 lat (msec): min=335, max=1706, avg=1021.27, stdev=969.35 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 334], 60.00th=[ 1703], | 70.00th=[ 1703], 80.00th=[ 1703], 90.00th=[ 1703], 95.00th=[ 1703], | 99.00th=[ 1703], 99.50th=[ 1703], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 8175, max= 8175, per=100.00%, avg=8175.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=5.28%, ctx=531, 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=174601: Wed Aug 26 05:12:24 2026 write: IOPS=0, BW=3037KiB/s (3110kB/s)(12.0MiB/4046msec); 0 zone resets clat (msec): min=539, max=2626, avg=1297.84, stdev=1154.28 lat (msec): min=540, max=2626, avg=1298.40, stdev=1154.16 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 2635], 80.00th=[ 2635], 90.00th=[ 2635], 95.00th=[ 2635], | 99.00th=[ 2635], 99.50th=[ 2635], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 8159, max= 8175, per=100.00%, avg=8167.00, stdev=11.31, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=3.88%, ctx=71, 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=174602: Wed Aug 26 05:12:24 2026 write: IOPS=0, BW=2679KiB/s (2744kB/s)(12.0MiB/4586msec); 0 zone resets clat (msec): min=215, max=3526, avg=1434.62, stdev=1820.26 lat (msec): min=215, max=3527, avg=1435.17, stdev=1820.10 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 215], 10.00th=[ 215], 20.00th=[ 215], | 30.00th=[ 215], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 3540], 80.00th=[ 3540], 90.00th=[ 3540], 95.00th=[ 3540], | 99.00th=[ 3540], 99.50th=[ 3540], 99.90th=[ 3540], 99.95th=[ 3540], | 99.99th=[ 3540] bw ( KiB/s): min=16384, max=16384, per=100.00%, avg=16384.00, stdev= 0.00, samples=1 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 750=33.33%, >=2000=33.33% cpu : usr=0.04%, sys=2.75%, ctx=47, 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=3251KiB/s (3329kB/s), 813KiB/s-2714KiB/s (832kB/s-2779kB/s), io=16.0MiB (16.8MB), run=4528-5039msec WRITE: bw=6503KiB/s (6659kB/s), 1626KiB/s-3037KiB/s (1665kB/s-3110kB/s), io=32.0MiB (33.6MB), run=4046-5039msec rand-rw: (groupid=0, jobs=1): err= 0: pid=174603: Wed Aug 26 05:12:24 2026 read: IOPS=0, BW=2372KiB/s (2429kB/s)(12.0MiB/5181msec) clat (msec): min=490, max=3628, avg=1700.99, stdev=1687.73 lat (msec): min=490, max=3628, avg=1700.99, stdev=1687.73 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 986], 50.00th=[ 986], 60.00th=[ 986], | 70.00th=[ 3641], 80.00th=[ 3641], 90.00th=[ 3641], 95.00th=[ 3641], | 99.00th=[ 3641], 99.50th=[ 3641], 99.90th=[ 3641], 99.95th=[ 3641], | 99.99th=[ 3641] bw ( KiB/s): min= 8110, max= 8192, per=100.00%, avg=8151.00, stdev=57.98, 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=0.00%, sys=1.97%, ctx=42, 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=174604: Wed Aug 26 05:12:24 2026 read: IOPS=0, BW=773KiB/s (792kB/s)(4096KiB/5297msec) clat (nsec): min=3305.5M, max=3305.5M, avg=3305507200.00, stdev= 0.00 lat (nsec): min=3305.5M, max=3305.5M, avg=3305509749.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 3306], 5.00th=[ 3306], 10.00th=[ 3306], 20.00th=[ 3306], | 30.00th=[ 3306], 40.00th=[ 3306], 50.00th=[ 3306], 60.00th=[ 3306], | 70.00th=[ 3306], 80.00th=[ 3306], 90.00th=[ 3306], 95.00th=[ 3306], | 99.00th=[ 3306], 99.50th=[ 3306], 99.90th=[ 3306], 99.95th=[ 3306], | 99.99th=[ 3306] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1547KiB/s (1584kB/s)(8192KiB/5297msec); 0 zone resets clat (msec): min=475, max=1390, avg=933.38, stdev=646.91 lat (msec): min=476, max=1391, avg=933.77, stdev=646.90 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 477], 50.00th=[ 477], 60.00th=[ 1385], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 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 lat (msec) : 500=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.68%, ctx=67, 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=174605: Wed Aug 26 05:12:24 2026 write: IOPS=0, BW=2435KiB/s (2493kB/s)(12.0MiB/5047msec); 0 zone resets clat (msec): min=593, max=3188, avg=1649.51, stdev=1363.05 lat (msec): min=593, max=3188, avg=1649.91, stdev=1363.01 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 3205], 80.00th=[ 3205], 90.00th=[ 3205], 95.00th=[ 3205], | 99.00th=[ 3205], 99.50th=[ 3205], 99.90th=[ 3205], 99.95th=[ 3205], | 99.99th=[ 3205] bw ( KiB/s): min= 8094, max= 8192, per=100.00%, avg=8143.00, stdev=69.30, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.99%, ctx=55, 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=174606: Wed Aug 26 05:12:24 2026 write: IOPS=0, BW=2974KiB/s (3045kB/s)(12.0MiB/4132msec); 0 zone resets clat (msec): min=242, max=3439, avg=1330.10, stdev=1827.24 lat (msec): min=242, max=3441, avg=1330.88, stdev=1827.87 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 309], | 70.00th=[ 3440], 80.00th=[ 3440], 90.00th=[ 3440], 95.00th=[ 3440], | 99.00th=[ 3440], 99.50th=[ 3440], 99.90th=[ 3440], 99.95th=[ 3440], | 99.99th=[ 3440] bw ( KiB/s): min= 6989, max= 8110, per=100.00%, avg=7549.50, stdev=792.67, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.29%, ctx=73, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3093KiB/s (3167kB/s), 773KiB/s-2372KiB/s (792kB/s-2429kB/s), io=16.0MiB (16.8MB), run=5181-5297msec WRITE: bw=6186KiB/s (6335kB/s), 1547KiB/s-2974KiB/s (1584kB/s-3045kB/s), io=32.0MiB (33.6MB), run=4132-5297msec