== sanity test 398b: DIO and buffer IO race ============== 10:46:04 (1788533164) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.59257 s, 7.6 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=144467: Fri Sep 4 10:48:56 2026 read: IOPS=10, BW=40.2KiB/s (41.2kB/s)(5992KiB/148920msec) clat (usec): min=38, max=902228, avg=49434.39, stdev=45959.01 lat (usec): min=38, max=902232, avg=49438.20, stdev=45958.98 clat percentiles (usec): | 1.00th=[ 58], 5.00th=[ 73], 10.00th=[ 2474], 20.00th=[ 21890], | 30.00th=[ 27395], 40.00th=[ 33162], 50.00th=[ 41157], 60.00th=[ 49546], | 70.00th=[ 58459], 80.00th=[ 72877], 90.00th=[ 94897], 95.00th=[117965], | 99.00th=[191890], 99.50th=[238027], 99.90th=[541066], 99.95th=[901776], | 99.99th=[901776] bw ( KiB/s): min= 7, max= 110, per=25.52%, avg=40.33, stdev=19.20, samples=289 iops : min= 1, max= 27, avg= 9.40, stdev= 4.86, samples=289 write: IOPS=10, BW=42.3KiB/s (43.3kB/s)(6296KiB/148920msec); 0 zone resets clat (usec): min=961, max=376431, avg=47180.19, stdev=49548.43 lat (usec): min=963, max=376434, avg=47185.52, stdev=49548.84 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1369], 10.00th=[ 2008], 20.00th=[ 5145], | 30.00th=[ 9896], 40.00th=[ 22152], 50.00th=[ 34341], 60.00th=[ 46400], | 70.00th=[ 60556], 80.00th=[ 80217], 90.00th=[110625], 95.00th=[145753], | 99.00th=[217056], 99.50th=[248513], 99.90th=[346031], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 7, max= 95, per=25.51%, avg=42.35, stdev=18.85, samples=289 iops : min= 1, max= 23, avg= 9.92, stdev= 4.76, samples=289 lat (usec) : 50=0.13%, 100=3.84%, 250=0.49%, 500=0.13%, 750=0.10% lat (usec) : 1000=0.10% lat (msec) : 2=5.18%, 4=3.58%, 10=7.00%, 20=7.81%, 50=33.63% lat (msec) : 100=27.51%, 250=10.12%, 500=0.33%, 750=0.03%, 1000=0.03% cpu : usr=0.08%, sys=4.44%, ctx=6371, 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=144470: Fri Sep 4 10:48:56 2026 read: IOPS=9, BW=39.5KiB/s (40.4kB/s)(5940KiB/150483msec) clat (usec): min=29, max=1057.6k, avg=50014.96, stdev=48590.13 lat (usec): min=29, max=1057.6k, avg=50016.60, stdev=48590.11 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 68], 10.00th=[ 120], | 20.00th=[ 21103], 30.00th=[ 27657], 40.00th=[ 33817], | 50.00th=[ 40633], 60.00th=[ 49021], 70.00th=[ 58459], | 80.00th=[ 72877], 90.00th=[ 94897], 95.00th=[ 124257], | 99.00th=[ 200279], 99.50th=[ 229639], 99.90th=[ 434111], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 7, max= 96, per=25.53%, avg=40.34, stdev=18.77, samples=286 iops : min= 1, max= 24, avg= 9.41, stdev= 4.72, samples=286 write: IOPS=10, BW=42.2KiB/s (43.2kB/s)(6348KiB/150483msec); 0 zone resets clat (usec): min=1029, max=399798, avg=47638.42, stdev=49983.52 lat (usec): min=1030, max=399800, avg=47654.00, stdev=49997.47 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1352], 10.00th=[ 1713], 20.00th=[ 4817], | 30.00th=[ 10552], 40.00th=[ 21890], 50.00th=[ 34866], 60.00th=[ 46924], | 70.00th=[ 61080], 80.00th=[ 81265], 90.00th=[114820], 95.00th=[141558], | 99.00th=[225444], 99.50th=[258999], 99.90th=[329253], 99.95th=[400557], | 99.99th=[400557] bw ( KiB/s): min= 7, max= 139, per=25.63%, avg=42.55, stdev=21.01, samples=289 iops : min= 1, max= 34, avg= 9.97, stdev= 5.31, samples=289 lat (usec) : 50=0.33%, 100=4.26%, 250=0.42%, 500=0.10% lat (msec) : 2=6.05%, 4=3.55%, 10=5.79%, 20=8.69%, 50=32.62% lat (msec) : 100=27.05%, 250=10.58%, 500=0.52%, 2000=0.03% cpu : usr=0.08%, sys=4.51%, ctx=6495, 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=144472: Fri Sep 4 10:48:56 2026 read: IOPS=9, BW=39.8KiB/s (40.8kB/s)(6028KiB/151390msec) clat (usec): min=38, max=414840, avg=49047.46, stdev=39993.31 lat (usec): min=38, max=414841, avg=49049.16, stdev=39993.41 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 70], 10.00th=[ 1237], 20.00th=[ 20841], | 30.00th=[ 27919], 40.00th=[ 33817], 50.00th=[ 41157], 60.00th=[ 49546], | 70.00th=[ 60031], 80.00th=[ 73925], 90.00th=[ 92799], 95.00th=[113771], | 99.00th=[177210], 99.50th=[235930], 99.90th=[362808], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 7, max= 111, per=25.48%, avg=40.26, stdev=19.83, samples=291 iops : min= 1, max= 27, avg= 9.38, stdev= 5.00, samples=291 write: IOPS=10, BW=41.3KiB/s (42.3kB/s)(6260KiB/151390msec); 0 zone resets clat (usec): min=973, max=1364.6k, avg=49218.85, stdev=59931.05 lat (usec): min=974, max=1364.6k, avg=49222.21, stdev=59931.36 clat percentiles (usec): | 1.00th=[ 1139], 5.00th=[ 1336], 10.00th=[ 1582], | 20.00th=[ 4817], 30.00th=[ 11338], 40.00th=[ 22938], | 50.00th=[ 35390], 60.00th=[ 49546], 70.00th=[ 65799], | 80.00th=[ 83362], 90.00th=[ 112722], 95.00th=[ 143655], | 99.00th=[ 223347], 99.50th=[ 278922], 99.90th=[ 455082], | 99.95th=[1367344], 99.99th=[1367344] bw ( KiB/s): min= 7, max= 119, per=24.96%, avg=41.44, stdev=20.51, samples=294 iops : min= 1, max= 29, avg= 9.68, stdev= 5.16, samples=294 lat (usec) : 50=0.36%, 100=3.71%, 250=0.59%, 500=0.16%, 1000=0.07% lat (msec) : 2=6.09%, 4=3.22%, 10=5.47%, 20=8.76%, 50=31.93% lat (msec) : 100=28.71%, 250=10.35%, 500=0.55%, 2000=0.03% cpu : usr=0.08%, sys=4.44%, ctx=6567, 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=144473: Fri Sep 4 10:48:56 2026 read: IOPS=10, BW=40.5KiB/s (41.4kB/s)(6052KiB/149563msec) clat (usec): min=24, max=399467, avg=48852.83, stdev=38836.71 lat (usec): min=24, max=399469, avg=48858.06, stdev=38836.14 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 68], 10.00th=[ 135], 20.00th=[ 21365], | 30.00th=[ 27657], 40.00th=[ 33424], 50.00th=[ 40633], 60.00th=[ 49546], | 70.00th=[ 59507], 80.00th=[ 73925], 90.00th=[ 96994], 95.00th=[117965], | 99.00th=[168821], 99.50th=[217056], 99.90th=[308282], 99.95th=[400557], | 99.99th=[400557] bw ( KiB/s): min= 7, max= 110, per=25.88%, avg=40.90, stdev=19.46, samples=287 iops : min= 1, max= 27, avg= 9.55, stdev= 4.91, samples=287 write: IOPS=10, BW=41.7KiB/s (42.7kB/s)(6236KiB/149563msec); 0 zone resets clat (usec): min=957, max=1374.8k, avg=48202.98, stdev=62855.30 lat (usec): min=959, max=1374.8k, avg=48209.38, stdev=62853.95 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1336], 10.00th=[ 1647], | 20.00th=[ 4424], 30.00th=[ 9372], 40.00th=[ 18744], | 50.00th=[ 32375], 60.00th=[ 45876], 70.00th=[ 63701], | 80.00th=[ 82314], 90.00th=[ 112722], 95.00th=[ 139461], | 99.00th=[ 217056], 99.50th=[ 274727], 99.90th=[ 574620], | 99.95th=[1367344], 99.99th=[1367344] bw ( KiB/s): min= 7, max= 119, per=25.10%, avg=41.66, stdev=19.74, samples=290 iops : min= 1, max= 29, avg= 9.74, stdev= 4.97, samples=290 lat (usec) : 50=0.39%, 100=4.10%, 250=0.59%, 500=0.20%, 750=0.07% lat (usec) : 1000=0.13% lat (msec) : 2=5.92%, 4=3.39%, 10=6.54%, 20=8.30%, 50=31.93% lat (msec) : 100=27.44%, 250=10.55%, 500=0.36%, 750=0.07%, 2000=0.03% cpu : usr=0.08%, sys=4.40%, ctx=6456, 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=159KiB/s (162kB/s), 39.5KiB/s-40.5KiB/s (40.4kB/s-41.4kB/s), io=23.4MiB (24.6MB), run=148920-151390msec WRITE: bw=166KiB/s (170kB/s), 41.3KiB/s-42.3KiB/s (42.3kB/s-43.3kB/s), io=24.6MiB (25.7MB), run=148920-151390msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144468: Fri Sep 4 10:51:04 2026 read: IOPS=5, BW=21.5KiB/s (21.0kB/s)(5992KiB/279099msec) clat (msec): min=5, max=938, avg=38.43, stdev=46.81 lat (msec): min=5, max=938, avg=38.43, stdev=46.81 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 54], 90.00th=[ 86], 95.00th=[ 118], | 99.00th=[ 213], 99.50th=[ 245], 99.90th=[ 405], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 95, per=29.03%, avg=24.68, stdev=17.67, samples=469 iops : min= 1, max= 23, avg= 5.53, stdev= 4.46, samples=469 write: IOPS=5, BW=22.6KiB/s (23.1kB/s)(6296KiB/279099msec); 0 zone resets clat (msec): min=36, max=853, avg=140.49, stdev=86.23 lat (msec): min=36, max=854, avg=140.50, stdev=86.23 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 80], | 30.00th=[ 91], 40.00th=[ 103], 50.00th=[ 115], 60.00th=[ 134], | 70.00th=[ 153], 80.00th=[ 188], 90.00th=[ 245], 95.00th=[ 309], | 99.00th=[ 468], 99.50th=[ 567], 99.90th=[ 735], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 63, per=25.38%, avg=22.58, stdev=11.89, samples=536 iops : min= 1, max= 15, avg= 5.00, stdev= 3.02, samples=536 lat (msec) : 10=3.55%, 20=17.29%, 50=18.65%, 100=25.42%, 250=29.88% lat (msec) : 500=4.75%, 750=0.39%, 1000=0.07% cpu : usr=0.04%, sys=1.13%, ctx=5142, 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=144469: Fri Sep 4 10:51:04 2026 read: IOPS=5, BW=21.3KiB/s (21.8kB/s)(5940KiB/279412msec) clat (msec): min=5, max=1033, avg=38.91, stdev=52.64 lat (msec): min=5, max=1033, avg=38.91, stdev=52.64 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 36], 80.00th=[ 54], 90.00th=[ 85], 95.00th=[ 115], | 99.00th=[ 215], 99.50th=[ 275], 99.90th=[ 600], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 94, per=29.35%, avg=24.94, stdev=17.49, samples=460 iops : min= 1, max= 23, avg= 5.60, stdev= 4.41, samples=460 write: IOPS=5, BW=22.7KiB/s (23.3kB/s)(6348KiB/279412msec); 0 zone resets clat (msec): min=38, max=631, avg=139.35, stdev=83.56 lat (msec): min=38, max=631, avg=139.35, stdev=83.56 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 58], 10.00th=[ 67], 20.00th=[ 81], | 30.00th=[ 91], 40.00th=[ 104], 50.00th=[ 115], 60.00th=[ 129], | 70.00th=[ 150], 80.00th=[ 184], 90.00th=[ 251], 95.00th=[ 317], | 99.00th=[ 456], 99.50th=[ 502], 99.90th=[ 617], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 63, per=25.57%, avg=22.76, stdev=12.14, samples=537 iops : min= 1, max= 15, avg= 5.04, stdev= 3.08, samples=537 lat (msec) : 10=3.52%, 20=17.90%, 50=17.45%, 100=25.59%, 250=29.98% lat (msec) : 500=5.21%, 750=0.33%, 2000=0.03% cpu : usr=0.05%, sys=1.14%, ctx=5131, 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=144471: Fri Sep 4 10:51:04 2026 read: IOPS=5, BW=21.5KiB/s (22.1kB/s)(6028KiB/279889msec) clat (msec): min=5, max=543, avg=39.79, stdev=46.75 lat (msec): min=5, max=543, avg=39.80, stdev=46.75 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 37], 80.00th=[ 56], 90.00th=[ 87], 95.00th=[ 131], | 99.00th=[ 226], 99.50th=[ 334], 99.90th=[ 443], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 7, max= 94, per=27.73%, avg=23.57, stdev=16.57, samples=493 iops : min= 1, max= 23, avg= 5.25, stdev= 4.19, samples=493 write: IOPS=5, BW=22.4KiB/s (22.9kB/s)(6260KiB/279889msec); 0 zone resets clat (msec): min=33, max=1332, avg=140.26, stdev=84.45 lat (msec): min=33, max=1332, avg=140.26, stdev=84.45 clat percentiles (msec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 70], 20.00th=[ 80], | 30.00th=[ 92], 40.00th=[ 105], 50.00th=[ 116], 60.00th=[ 134], | 70.00th=[ 155], 80.00th=[ 184], 90.00th=[ 239], 95.00th=[ 300], | 99.00th=[ 456], 99.50th=[ 498], 99.90th=[ 575], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7, max= 55, per=25.35%, avg=22.56, stdev=11.86, samples=534 iops : min= 1, max= 13, avg= 5.00, stdev= 3.01, samples=534 lat (msec) : 10=3.32%, 20=17.12%, 50=18.46%, 100=25.00%, 250=31.28% lat (msec) : 500=4.56%, 750=0.23%, 2000=0.03% cpu : usr=0.05%, sys=1.11%, ctx=5110, 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=144474: Fri Sep 4 10:51:04 2026 read: IOPS=5, BW=21.7KiB/s (22.2kB/s)(6052KiB/279473msec) clat (msec): min=5, max=557, avg=38.58, stdev=45.20 lat (msec): min=5, max=557, avg=38.60, stdev=45.19 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 27], | 70.00th=[ 35], 80.00th=[ 54], 90.00th=[ 90], 95.00th=[ 125], | 99.00th=[ 222], 99.50th=[ 284], 99.90th=[ 409], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 7, max= 119, per=28.86%, avg=24.53, stdev=18.09, samples=476 iops : min= 1, max= 29, avg= 5.49, stdev= 4.56, samples=476 write: IOPS=5, BW=22.3KiB/s (22.8kB/s)(6236KiB/279473msec); 0 zone resets clat (msec): min=38, max=1347, avg=141.56, stdev=87.90 lat (msec): min=38, max=1347, avg=141.56, stdev=87.90 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 58], 10.00th=[ 68], 20.00th=[ 81], | 30.00th=[ 93], 40.00th=[ 104], 50.00th=[ 118], 60.00th=[ 133], | 70.00th=[ 159], 80.00th=[ 188], 90.00th=[ 243], 95.00th=[ 313], | 99.00th=[ 439], 99.50th=[ 510], 99.90th=[ 844], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7, max= 55, per=25.28%, avg=22.50, stdev=11.67, samples=533 iops : min= 1, max= 13, avg= 4.98, stdev= 2.96, samples=533 lat (msec) : 10=3.61%, 20=18.00%, 50=18.07%, 100=24.35%, 250=30.99% lat (msec) : 500=4.69%, 750=0.23%, 1000=0.03%, 2000=0.03% cpu : usr=0.05%, sys=1.20%, ctx=5169, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=85.8KiB/s (87.8kB/s), 21.3KiB/s-21.7KiB/s (21.8kB/s-22.2kB/s), io=23.4MiB (24.6MB), run=279099-279889msec WRITE: bw=89.8KiB/s (91.0kB/s), 22.3KiB/s-22.7KiB/s (22.8kB/s-23.3kB/s), io=24.6MiB (25.7MB), run=279099-279889msec 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=144532: Fri Sep 4 10:51:52 2026 read: IOPS=11, BW=177KiB/s (182kB/s)(5920KiB/33358msec) clat (usec): min=41, max=221761, avg=45272.22, stdev=39733.74 lat (usec): min=42, max=221761, avg=45273.68, stdev=39733.76 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 59], 10.00th=[ 72], 20.00th=[ 86], | 30.00th=[ 19006], 40.00th=[ 34341], 50.00th=[ 43254], 60.00th=[ 52167], | 70.00th=[ 63701], 80.00th=[ 74974], 90.00th=[ 93848], 95.00th=[114820], | 99.00th=[185598], 99.50th=[191890], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 31, max= 415, per=26.09%, avg=176.66, stdev=75.36, samples=65 iops : min= 1, max= 25, avg=10.26, stdev= 4.78, samples=65 write: IOPS=11, BW=191KiB/s (195kB/s)(6368KiB/33358msec); 0 zone resets clat (usec): min=1459, max=331262, avg=41446.64, stdev=45933.83 lat (usec): min=1462, max=331267, avg=41453.12, stdev=45940.13 clat percentiles (usec): | 1.00th=[ 1549], 5.00th=[ 1762], 10.00th=[ 2114], 20.00th=[ 5014], | 30.00th=[ 8356], 40.00th=[ 13042], 50.00th=[ 25822], 60.00th=[ 39584], | 70.00th=[ 53216], 80.00th=[ 72877], 90.00th=[102237], 95.00th=[130548], | 99.00th=[208667], 99.50th=[248513], 99.90th=[329253], 99.95th=[329253], | 99.99th=[329253] bw ( KiB/s): min= 31, max= 446, per=26.81%, avg=190.89, stdev=90.91, samples=65 iops : min= 1, max= 27, avg=11.17, stdev= 5.73, samples=65 lat (usec) : 50=1.04%, 100=10.29%, 250=0.91%, 500=0.39%, 750=0.26% lat (usec) : 1000=0.13% lat (msec) : 2=5.08%, 4=4.95%, 10=8.46%, 20=7.29%, 50=23.31% lat (msec) : 100=28.39%, 250=9.38%, 500=0.13% cpu : usr=0.07%, sys=4.60%, ctx=1301, 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=144536: Fri Sep 4 10:51:52 2026 read: IOPS=10, BW=163KiB/s (167kB/s)(5744KiB/35209msec) clat (usec): min=43, max=243212, avg=50242.13, stdev=40701.59 lat (usec): min=43, max=243213, avg=50243.59, stdev=40701.61 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 122], | 30.00th=[ 29492], 40.00th=[ 38536], 50.00th=[ 47449], 60.00th=[ 55313], | 70.00th=[ 63701], 80.00th=[ 84411], 90.00th=[105382], 95.00th=[127402], | 99.00th=[160433], 99.50th=[179307], 99.90th=[242222], 99.95th=[242222], | 99.99th=[242222] bw ( KiB/s): min= 25, max= 383, per=23.96%, avg=162.23, stdev=73.48, samples=69 iops : min= 1, max= 23, avg= 9.36, stdev= 4.64, samples=69 write: IOPS=11, BW=186KiB/s (190kB/s)(6544KiB/35209msec); 0 zone resets clat (usec): min=1533, max=237106, avg=41305.28, stdev=43081.28 lat (usec): min=1534, max=237109, avg=41321.40, stdev=43104.21 clat percentiles (usec): | 1.00th=[ 1631], 5.00th=[ 1844], 10.00th=[ 2278], 20.00th=[ 5669], | 30.00th=[ 9503], 40.00th=[ 14353], 50.00th=[ 25035], 60.00th=[ 39060], | 70.00th=[ 53216], 80.00th=[ 79168], 90.00th=[105382], 95.00th=[120062], | 99.00th=[183501], 99.50th=[193987], 99.90th=[238027], 99.95th=[238027], | 99.99th=[238027] bw ( KiB/s): min= 31, max= 416, per=26.49%, avg=188.62, stdev=86.25, samples=68 iops : min= 1, max= 26, avg=11.03, stdev= 5.40, samples=68 lat (usec) : 50=1.04%, 100=7.29%, 250=1.56%, 500=0.13%, 750=0.39% lat (usec) : 1000=0.26% lat (msec) : 2=4.30%, 4=3.78%, 10=9.38%, 20=8.07%, 50=25.13% lat (msec) : 100=27.47%, 250=11.20% cpu : usr=0.07%, sys=5.11%, ctx=1446, 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=144537: Fri Sep 4 10:51:52 2026 read: IOPS=11, BW=177KiB/s (181kB/s)(6256KiB/35369msec) clat (usec): min=37, max=294065, avg=46830.75, stdev=42711.82 lat (usec): min=38, max=294066, avg=46837.64, stdev=42705.97 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 60], 10.00th=[ 68], 20.00th=[ 84], | 30.00th=[ 21365], 40.00th=[ 32637], 50.00th=[ 42730], 60.00th=[ 53740], | 70.00th=[ 65799], 80.00th=[ 80217], 90.00th=[ 99091], 95.00th=[111674], | 99.00th=[166724], 99.50th=[267387], 99.90th=[295699], 99.95th=[295699], | 99.99th=[295699] bw ( KiB/s): min= 31, max= 448, per=26.55%, avg=179.72, stdev=87.54, samples=68 iops : min= 1, max= 28, avg=10.46, stdev= 5.56, samples=68 write: IOPS=10, BW=171KiB/s (175kB/s)(6032KiB/35369msec); 0 zone resets clat (usec): min=1448, max=374746, avg=44196.22, stdev=48428.05 lat (usec): min=1450, max=374750, avg=44217.14, stdev=48458.64 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1909], 10.00th=[ 2606], 20.00th=[ 6194], | 30.00th=[ 10552], 40.00th=[ 16188], 50.00th=[ 28443], 60.00th=[ 43254], | 70.00th=[ 58459], 80.00th=[ 74974], 90.00th=[105382], 95.00th=[131597], | 99.00th=[233833], 99.50th=[299893], 99.90th=[375391], 99.95th=[375391], | 99.99th=[375391] bw ( KiB/s): min= 31, max= 448, per=23.55%, avg=167.71, stdev=74.91, samples=69 iops : min= 1, max= 28, avg= 9.71, stdev= 4.78, samples=69 lat (usec) : 50=1.56%, 100=11.33%, 250=0.78%, 500=0.26%, 1000=0.13% lat (msec) : 2=3.26%, 4=4.04%, 10=7.03%, 20=8.33%, 50=23.44% lat (msec) : 100=29.30%, 250=10.03%, 500=0.52% cpu : usr=0.09%, sys=4.80%, ctx=1448, 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=144538: Fri Sep 4 10:51:52 2026 read: IOPS=10, BW=176KiB/s (180kB/s)(6032KiB/34296msec) clat (usec): min=40, max=248918, avg=47120.95, stdev=43690.64 lat (usec): min=41, max=248919, avg=47122.75, stdev=43690.58 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 61], 10.00th=[ 68], 20.00th=[ 87], | 30.00th=[ 18744], 40.00th=[ 33162], 50.00th=[ 43254], 60.00th=[ 51643], | 70.00th=[ 63177], 80.00th=[ 79168], 90.00th=[105382], 95.00th=[129500], | 99.00th=[170918], 99.50th=[242222], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 62, max= 383, per=26.30%, avg=178.03, stdev=84.60, samples=65 iops : min= 3, max= 23, avg=10.35, stdev= 5.32, samples=65 write: IOPS=11, BW=182KiB/s (187kB/s)(6256KiB/34296msec); 0 zone resets clat (usec): min=1490, max=240584, avg=41327.79, stdev=47389.23 lat (usec): min=1498, max=240586, avg=41330.72, stdev=47389.27 clat percentiles (usec): | 1.00th=[ 1582], 5.00th=[ 1844], 10.00th=[ 2180], 20.00th=[ 4555], | 30.00th=[ 7504], 40.00th=[ 12125], 50.00th=[ 22676], 60.00th=[ 35390], | 70.00th=[ 54264], 80.00th=[ 73925], 90.00th=[108528], 95.00th=[137364], | 99.00th=[219153], 99.50th=[238027], 99.90th=[240124], 99.95th=[240124], | 99.99th=[240124] bw ( KiB/s): min= 31, max= 512, per=25.24%, avg=179.72, stdev=92.64, samples=67 iops : min= 1, max= 32, avg=10.46, stdev= 5.88, samples=67 lat (usec) : 50=1.17%, 100=10.55%, 250=1.43%, 500=0.26%, 750=0.39% lat (usec) : 1000=0.13% lat (msec) : 2=4.04%, 4=5.21%, 10=9.90%, 20=6.51%, 50=23.44% lat (msec) : 100=24.87%, 250=12.11% cpu : usr=0.05%, sys=4.64%, ctx=1397, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=677KiB/s (693kB/s), 163KiB/s-177KiB/s (167kB/s-182kB/s), io=23.4MiB (24.5MB), run=33358-35369msec WRITE: bw=712KiB/s (730kB/s), 171KiB/s-191KiB/s (175kB/s-195kB/s), io=24.6MiB (25.8MB), run=33358-35369msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144531: Fri Sep 4 10:52:37 2026 read: IOPS=4, BW=73.2KiB/s (74.9kB/s)(5920KiB/80882msec) clat (msec): min=8, max=411, avg=50.50, stdev=51.58 lat (msec): min=8, max=411, avg=50.51, stdev=51.58 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 24], 40.00th=[ 30], 50.00th=[ 35], 60.00th=[ 41], | 70.00th=[ 52], 80.00th=[ 69], 90.00th=[ 108], 95.00th=[ 155], | 99.00th=[ 268], 99.50th=[ 384], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 30, max= 254, per=27.85%, avg=82.44, stdev=50.16, samples=139 iops : min= 1, max= 15, avg= 4.35, stdev= 3.15, samples=139 write: IOPS=4, BW=78.7KiB/s (80.6kB/s)(6368KiB/80882msec); 0 zone resets clat (msec): min=39, max=431, avg=155.73, stdev=74.69 lat (msec): min=39, max=431, avg=155.74, stdev=74.69 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 70], 10.00th=[ 82], 20.00th=[ 96], | 30.00th=[ 108], 40.00th=[ 125], 50.00th=[ 136], 60.00th=[ 155], | 70.00th=[ 171], 80.00th=[ 205], 90.00th=[ 266], 95.00th=[ 313], | 99.00th=[ 418], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 26, max= 190, per=25.57%, avg=79.51, stdev=37.56, samples=156 iops : min= 1, max= 11, avg= 4.15, stdev= 2.42, samples=156 lat (msec) : 10=1.30%, 20=9.51%, 50=22.66%, 100=20.96%, 250=38.67% lat (msec) : 500=6.90% cpu : usr=0.03%, sys=1.19%, ctx=1302, 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=144533: Fri Sep 4 10:52:37 2026 read: IOPS=4, BW=71.5KiB/s (73.3kB/s)(5744KiB/80283msec) clat (msec): min=6, max=449, avg=45.07, stdev=43.22 lat (msec): min=6, max=449, avg=45.07, stdev=43.22 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 38], | 70.00th=[ 45], 80.00th=[ 64], 90.00th=[ 90], 95.00th=[ 132], | 99.00th=[ 226], 99.50th=[ 279], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 25, max= 256, per=29.11%, avg=86.16, stdev=52.81, samples=131 iops : min= 1, max= 16, avg= 4.58, stdev= 3.40, samples=131 write: IOPS=5, BW=81.5KiB/s (83.5kB/s)(6544KiB/80283msec); 0 zone resets clat (msec): min=51, max=523, avg=155.82, stdev=75.80 lat (msec): min=51, max=523, avg=155.82, stdev=75.80 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 74], 10.00th=[ 84], 20.00th=[ 97], | 30.00th=[ 110], 40.00th=[ 124], 50.00th=[ 136], 60.00th=[ 153], | 70.00th=[ 171], 80.00th=[ 209], 90.00th=[ 257], 95.00th=[ 296], | 99.00th=[ 426], 99.50th=[ 481], 99.90th=[ 523], 99.95th=[ 523], | 99.99th=[ 523] bw ( KiB/s): min= 30, max= 159, per=26.75%, avg=83.21, stdev=38.02, samples=154 iops : min= 1, max= 9, avg= 4.38, stdev= 2.45, samples=154 lat (msec) : 10=1.17%, 20=9.24%, 50=23.57%, 100=21.48%, 250=38.80% lat (msec) : 500=5.60%, 750=0.13% cpu : usr=0.05%, sys=1.27%, ctx=1317, 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=144534: Fri Sep 4 10:52:37 2026 read: IOPS=4, BW=78.7KiB/s (80.6kB/s)(6256KiB/79529msec) clat (msec): min=6, max=285, avg=46.06, stdev=41.62 lat (msec): min=6, max=285, avg=46.06, stdev=41.62 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 13], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 50], 80.00th=[ 63], 90.00th=[ 90], 95.00th=[ 125], | 99.00th=[ 245], 99.50th=[ 271], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 30, max= 320, per=30.60%, avg=90.57, stdev=61.92, samples=136 iops : min= 1, max= 20, avg= 4.85, stdev= 3.97, samples=136 write: IOPS=4, BW=75.8KiB/s (77.7kB/s)(6032KiB/79529msec); 0 zone resets clat (msec): min=41, max=445, avg=162.35, stdev=72.58 lat (msec): min=41, max=445, avg=162.35, stdev=72.58 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 78], 10.00th=[ 88], 20.00th=[ 107], | 30.00th=[ 120], 40.00th=[ 131], 50.00th=[ 142], 60.00th=[ 159], | 70.00th=[ 182], 80.00th=[ 215], 90.00th=[ 275], 95.00th=[ 317], | 99.00th=[ 376], 99.50th=[ 435], 99.90th=[ 447], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 30, max= 159, per=24.63%, avg=76.61, stdev=34.15, samples=153 iops : min= 1, max= 9, avg= 3.97, stdev= 2.19, samples=153 lat (msec) : 10=0.26%, 20=10.42%, 50=25.39%, 100=18.75%, 250=38.80% lat (msec) : 500=6.38% cpu : usr=0.04%, sys=1.14%, ctx=1281, 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=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=144535: Fri Sep 4 10:52:37 2026 read: IOPS=4, BW=75.4KiB/s (77.2kB/s)(6032KiB/79981msec) clat (msec): min=6, max=583, avg=48.72, stdev=53.01 lat (msec): min=6, max=583, avg=48.72, stdev=53.01 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 33], 60.00th=[ 41], | 70.00th=[ 47], 80.00th=[ 64], 90.00th=[ 102], 95.00th=[ 150], | 99.00th=[ 275], 99.50th=[ 284], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 30, max= 287, per=29.25%, avg=86.57, stdev=58.83, samples=135 iops : min= 1, max= 17, avg= 4.59, stdev= 3.73, samples=135 write: IOPS=4, BW=78.2KiB/s (80.1kB/s)(6256KiB/79981msec); 0 zone resets clat (msec): min=51, max=488, avg=157.31, stdev=77.51 lat (msec): min=51, max=488, avg=157.32, stdev=77.51 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 73], 10.00th=[ 82], 20.00th=[ 99], | 30.00th=[ 110], 40.00th=[ 126], 50.00th=[ 136], 60.00th=[ 155], | 70.00th=[ 178], 80.00th=[ 209], 90.00th=[ 259], 95.00th=[ 321], | 99.00th=[ 447], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 30, max= 160, per=25.74%, avg=80.05, stdev=34.87, samples=152 iops : min= 1, max= 10, avg= 4.18, stdev= 2.26, samples=152 lat (msec) : 10=1.04%, 20=9.90%, 50=25.13%, 100=19.14%, 250=38.15% lat (msec) : 500=6.51%, 750=0.13% cpu : usr=0.02%, sys=1.20%, ctx=1268, 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=296KiB/s (303kB/s), 71.5KiB/s-78.7KiB/s (73.3kB/s-80.6kB/s), io=23.4MiB (24.5MB), run=79529-80882msec WRITE: bw=312KiB/s (319kB/s), 75.8KiB/s-81.5KiB/s (77.7kB/s-83.5kB/s), io=24.6MiB (25.8MB), run=79529-80882msec 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=144556: Fri Sep 4 10:52:58 2026 read: IOPS=1, BW=1228KiB/s (1257kB/s)(7168KiB/5839msec) clat (msec): min=169, max=3169, avg=655.34, stdev=1110.65 lat (msec): min=169, max=3169, avg=655.34, stdev=1110.65 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 192], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 209], 60.00th=[ 284], | 70.00th=[ 284], 80.00th=[ 363], 90.00th=[ 3171], 95.00th=[ 3171], | 99.00th=[ 3171], 99.50th=[ 3171], 99.90th=[ 3171], 99.95th=[ 3171], | 99.99th=[ 3171] bw ( KiB/s): min= 1689, max= 4000, per=87.51%, avg=2322.60, stdev=947.35, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=877KiB/s (898kB/s)(5120KiB/5839msec); 0 zone resets clat (msec): min=89, max=418, avg=241.41, stdev=146.37 lat (msec): min=89, max=418, avg=241.50, stdev=146.34 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 90], 10.00th=[ 90], 20.00th=[ 90], | 30.00th=[ 121], 40.00th=[ 121], 50.00th=[ 213], 60.00th=[ 213], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 1889, max= 6000, per=88.12%, avg=3273.67, stdev=2361.17, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 lat (msec) : 100=8.33%, 250=50.00%, 500=33.33%, >=2000=8.33% cpu : usr=0.00%, sys=8.62%, ctx=631, 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=144557: Fri Sep 4 10:52:58 2026 read: IOPS=0, BW=265KiB/s (272kB/s)(2048KiB/7716msec) clat (msec): min=229, max=387, avg=308.71, stdev=112.11 lat (msec): min=229, max=387, avg=308.71, stdev=112.11 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 230], | 30.00th=[ 230], 40.00th=[ 230], 50.00th=[ 230], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 1570, max= 1976, per=66.80%, avg=1773.00, stdev=287.09, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1327KiB/s (1359kB/s)(10.0MiB/7716msec); 0 zone resets clat (msec): min=95, max=3427, avg=671.54, stdev=988.00 lat (msec): min=95, max=3427, avg=671.93, stdev=987.95 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 134], | 30.00th=[ 146], 40.00th=[ 326], 50.00th=[ 376], 60.00th=[ 472], | 70.00th=[ 518], 80.00th=[ 531], 90.00th=[ 701], 95.00th=[ 3440], | 99.00th=[ 3440], 99.50th=[ 3440], 99.90th=[ 3440], 99.95th=[ 3440], | 99.99th=[ 3440] bw ( KiB/s): min= 1889, max= 6095, per=85.87%, avg=3190.20, stdev=1850.97, samples=5 iops : min= 1, max= 5, avg= 2.20, stdev= 1.79, samples=5 lat (msec) : 100=8.33%, 250=25.00%, 500=33.33%, 750=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=7.76%, ctx=153, 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=144558: Fri Sep 4 10:52:58 2026 read: IOPS=0, BW=1022KiB/s (1047kB/s)(6144KiB/6011msec) clat (usec): min=430, max=472310, avg=158825.86, stdev=223614.64 lat (usec): min=431, max=472312, avg=158827.23, stdev=223614.65 clat percentiles (usec): | 1.00th=[ 433], 5.00th=[ 433], 10.00th=[ 433], 20.00th=[ 832], | 30.00th=[ 832], 40.00th=[ 2180], 50.00th=[ 2180], 60.00th=[ 58983], | 70.00th=[417334], 80.00th=[417334], 90.00th=[471860], 95.00th=[471860], | 99.00th=[471860], 99.50th=[471860], 99.90th=[471860], 99.95th=[471860], | 99.99th=[471860] bw ( KiB/s): min= 1932, max= 6000, per=100.00%, avg=3322.33, stdev=2319.50, samples=3 iops : min= 1, max= 5, avg= 2.33, stdev= 2.31, samples=3 write: IOPS=0, BW=1022KiB/s (1047kB/s)(6144KiB/6011msec); 0 zone resets clat (msec): min=176, max=3918, avg=834.23, stdev=1511.37 lat (msec): min=176, max=3919, avg=834.32, stdev=1511.42 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 178], 10.00th=[ 178], 20.00th=[ 209], | 30.00th=[ 209], 40.00th=[ 218], 50.00th=[ 218], 60.00th=[ 232], | 70.00th=[ 253], 80.00th=[ 253], 90.00th=[ 3910], 95.00th=[ 3910], | 99.00th=[ 3910], 99.50th=[ 3910], 99.90th=[ 3910], 99.95th=[ 3910], | 99.99th=[ 3910] bw ( KiB/s): min= 2000, max= 3864, per=73.04%, avg=2713.50, stdev=885.33, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 500=8.33%, 1000=8.33% lat (msec) : 4=8.33%, 100=8.33%, 250=33.33%, 500=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=4.98%, ctx=104, 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=144560: Fri Sep 4 10:52:58 2026 read: IOPS=0, BW=759KiB/s (777kB/s)(5120KiB/6745msec) clat (usec): min=484, max=568730, avg=262520.35, stdev=220884.61 lat (usec): min=485, max=568732, avg=262521.87, stdev=220884.61 clat percentiles (usec): | 1.00th=[ 486], 5.00th=[ 486], 10.00th=[ 486], 20.00th=[ 486], | 30.00th=[162530], 40.00th=[162530], 50.00th=[187696], 60.00th=[187696], | 70.00th=[392168], 80.00th=[392168], 90.00th=[566232], 95.00th=[566232], | 99.00th=[566232], 99.50th=[566232], 99.90th=[566232], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 1932, max= 2035, per=74.82%, avg=1985.75, stdev=43.25, samples=4 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=4 write: IOPS=1, BW=1063KiB/s (1088kB/s)(7168KiB/6745msec); 0 zone resets clat (msec): min=193, max=3654, avg=753.36, stdev=1280.19 lat (msec): min=193, max=3654, avg=753.46, stdev=1280.20 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 234], | 30.00th=[ 275], 40.00th=[ 275], 50.00th=[ 284], 60.00th=[ 305], | 70.00th=[ 305], 80.00th=[ 330], 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= 1494, max= 4071, per=63.46%, avg=2357.50, stdev=1161.43, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=8.33% lat (msec) : 250=33.33%, 500=41.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=6.20%, ctx=142, 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=2654KiB/s (2718kB/s), 265KiB/s-1228KiB/s (272kB/s-1257kB/s), io=20.0MiB (20.0MB), run=5839-7716msec WRITE: bw=3716KiB/s (3805kB/s), 877KiB/s-1327KiB/s (898kB/s-1359kB/s), io=28.0MiB (29.4MB), run=5839-7716msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144559: Fri Sep 4 10:52:59 2026 read: IOPS=0, BW=879KiB/s (900kB/s)(7168KiB/8156msec) clat (msec): min=58, max=3231, avg=923.79, stdev=1174.13 lat (msec): min=58, max=3231, avg=923.79, stdev=1174.13 clat percentiles (msec): | 1.00th=[ 59], 5.00th=[ 59], 10.00th=[ 59], 20.00th=[ 89], | 30.00th=[ 100], 40.00th=[ 100], 50.00th=[ 460], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 1703], 90.00th=[ 3239], 95.00th=[ 3239], | 99.00th=[ 3239], 99.50th=[ 3239], 99.90th=[ 3239], 99.95th=[ 3239], | 99.99th=[ 3239] bw ( KiB/s): min= 1928, max= 3976, per=100.00%, avg=2468.00, stdev=1005.86, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=628KiB/s (643kB/s)(5120KiB/8156msec); 0 zone resets clat (msec): min=117, max=397, avg=283.27, stdev=128.79 lat (msec): min=117, max=397, avg=283.59, stdev=128.59 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 118], 10.00th=[ 118], 20.00th=[ 118], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 2011, max= 4023, per=88.48%, avg=3017.00, stdev=1422.70, samples=2 iops : min= 1, max= 3, avg= 2.00, stdev= 1.41, samples=2 lat (msec) : 100=25.00%, 250=16.67%, 500=33.33%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=1.58%, ctx=73, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144561: Fri Sep 4 10:52:59 2026 read: IOPS=0, BW=247KiB/s (253kB/s)(2048KiB/8296msec) clat (msec): min=159, max=224, avg=192.12, stdev=46.19 lat (msec): min=159, max=224, avg=192.12, stdev=46.19 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 161], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 161], 60.00th=[ 226], | 70.00th=[ 226], 80.00th=[ 226], 90.00th=[ 226], 95.00th=[ 226], | 99.00th=[ 226], 99.50th=[ 226], 99.90th=[ 226], 99.95th=[ 226], | 99.99th=[ 226] bw ( KiB/s): min= 1988, max= 2048, per=82.84%, avg=2018.00, stdev=42.43, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1234KiB/s (1264kB/s)(10.0MiB/8296msec); 0 zone resets clat (msec): min=110, max=4162, avg=738.27, stdev=1216.54 lat (msec): min=110, max=4162, avg=738.36, stdev=1216.54 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 194], | 30.00th=[ 197], 40.00th=[ 220], 50.00th=[ 363], 60.00th=[ 456], | 70.00th=[ 493], 80.00th=[ 498], 90.00th=[ 693], 95.00th=[ 4178], | 99.00th=[ 4178], 99.50th=[ 4178], 99.90th=[ 4178], 99.95th=[ 4178], | 99.99th=[ 4178] bw ( KiB/s): min= 1928, max= 4023, per=67.86%, avg=2314.17, stdev=837.97, samples=6 iops : min= 1, max= 3, avg= 1.33, stdev= 0.82, samples=6 lat (msec) : 250=50.00%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.01%, sys=2.27%, ctx=95, 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=144562: Fri Sep 4 10:52:59 2026 read: IOPS=0, BW=785KiB/s (804kB/s)(6144KiB/7825msec) clat (msec): min=168, max=364, avg=273.25, stdev=76.78 lat (msec): min=168, max=364, avg=273.25, stdev=76.78 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 169], 10.00th=[ 169], 20.00th=[ 197], | 30.00th=[ 197], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 317], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 363], 95.00th=[ 363], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 1928, max= 3856, per=100.00%, avg=2445.75, stdev=940.82, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=785KiB/s (804kB/s)(6144KiB/7825msec); 0 zone resets clat (msec): min=143, max=4010, avg=962.28, stdev=1498.65 lat (msec): min=143, max=4011, avg=962.36, stdev=1498.66 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 456], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 4010], 95.00th=[ 4010], | 99.00th=[ 4010], 99.50th=[ 4010], 99.90th=[ 4010], 99.95th=[ 4010], | 99.99th=[ 4010] bw ( KiB/s): min= 1988, max= 4096, per=74.06%, avg=2525.50, stdev=1047.05, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 lat (msec) : 250=25.00%, 500=66.67%, >=2000=8.33% cpu : usr=0.00%, sys=1.74%, ctx=66, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144563: Fri Sep 4 10:52:59 2026 read: IOPS=0, BW=609KiB/s (624kB/s)(5120KiB/8407msec) clat (msec): min=48, max=561, avg=238.99, stdev=191.96 lat (msec): min=48, max=561, avg=238.99, stdev=191.96 clat percentiles (msec): | 1.00th=[ 49], 5.00th=[ 49], 10.00th=[ 49], 20.00th=[ 49], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 201], 60.00th=[ 201], | 70.00th=[ 218], 80.00th=[ 218], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 1928, max= 3976, per=100.00%, avg=2638.33, stdev=1159.20, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=853KiB/s (873kB/s)(7168KiB/8407msec); 0 zone resets clat (msec): min=162, max=4044, avg=951.80, stdev=1376.08 lat (msec): min=163, max=4044, avg=952.19, stdev=1375.96 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 163], 10.00th=[ 163], 20.00th=[ 321], | 30.00th=[ 330], 40.00th=[ 330], 50.00th=[ 472], 60.00th=[ 651], | 70.00th=[ 651], 80.00th=[ 684], 90.00th=[ 4044], 95.00th=[ 4044], | 99.00th=[ 4044], 99.50th=[ 4044], 99.90th=[ 4044], 99.95th=[ 4044], | 99.99th=[ 4044] bw ( KiB/s): min= 1928, max= 4071, per=68.80%, avg=2346.00, stdev=845.99, samples=6 iops : min= 1, max= 3, avg= 1.50, stdev= 0.84, samples=6 lat (msec) : 50=8.33%, 250=33.33%, 500=25.00%, 750=25.00%, >=2000=8.33% cpu : usr=0.00%, sys=2.40%, ctx=75, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=2436KiB/s (2495kB/s), 247KiB/s-879KiB/s (253kB/s-900kB/s), io=20.0MiB (20.0MB), run=7825-8407msec WRITE: bw=3410KiB/s (3492kB/s), 628KiB/s-1234KiB/s (643kB/s-1264kB/s), io=28.0MiB (29.4MB), run=7825-8407msec 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=144570: Fri Sep 4 10:53:15 2026 read: IOPS=0, BW=3211KiB/s (3288kB/s)(12.0MiB/3827msec) clat (msec): min=523, max=1795, avg=1236.47, stdev=649.52 lat (msec): min=523, max=1795, avg=1236.47, stdev=649.52 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 523], 40.00th=[ 1385], 50.00th=[ 1385], 60.00th=[ 1385], | 70.00th=[ 1804], 80.00th=[ 1804], 90.00th=[ 1804], 95.00th=[ 1804], | 99.00th=[ 1804], 99.50th=[ 1804], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 8031, max= 8110, per=100.00%, avg=8070.50, stdev=55.86, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.30%, ctx=42, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144571: Fri Sep 4 10:53:15 2026 read: IOPS=0, BW=975KiB/s (998kB/s)(4096KiB/4201msec) clat (nsec): min=2061.0M, max=2061.0M, avg=2061954766.00, stdev= 0.00 lat (nsec): min=2061.0M, max=2061.0M, avg=2061957450.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 2056], 5.00th=[ 2056], 10.00th=[ 2056], 20.00th=[ 2056], | 30.00th=[ 2056], 40.00th=[ 2056], 50.00th=[ 2056], 60.00th=[ 2056], | 70.00th=[ 2056], 80.00th=[ 2056], 90.00th=[ 2056], 95.00th=[ 2056], | 99.00th=[ 2056], 99.50th=[ 2056], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1950KiB/s (1997kB/s)(8192KiB/4201msec); 0 zone resets clat (msec): min=1013, max=1068, avg=1041.06, stdev=39.28 lat (msec): min=1013, max=1069, avg=1041.43, stdev=39.23 clat percentiles (msec): | 1.00th=[ 1011], 5.00th=[ 1011], 10.00th=[ 1011], 20.00th=[ 1011], | 30.00th=[ 1011], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1070], | 70.00th=[ 1070], 80.00th=[ 1070], 90.00th=[ 1070], 95.00th=[ 1070], | 99.00th=[ 1070], 99.50th=[ 1070], 99.90th=[ 1070], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 8110, max= 8110, per=100.00%, avg=8110.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.02%, sys=2.38%, ctx=38, 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=144572: Fri Sep 4 10:53:15 2026 write: IOPS=1, BW=4511KiB/s (4619kB/s)(12.0MiB/2724msec); 0 zone resets clat (msec): min=544, max=1316, avg=880.42, stdev=396.00 lat (msec): min=544, max=1317, avg=880.81, stdev=395.95 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 776], 50.00th=[ 776], 60.00th=[ 776], | 70.00th=[ 1318], 80.00th=[ 1318], 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= 8031, max= 8078, per=100.00%, avg=8054.50, stdev=33.23, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.37%, ctx=53, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144573: Fri Sep 4 10:53:15 2026 write: IOPS=0, BW=3754KiB/s (3844kB/s)(12.0MiB/3273msec); 0 zone resets clat (msec): min=461, max=2106, avg=1054.47, stdev=913.62 lat (msec): min=461, max=2106, avg=1055.30, stdev=913.22 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 460], 10.00th=[ 460], 20.00th=[ 460], | 30.00th=[ 460], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 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= 5454, max= 8031, per=86.44%, avg=6742.50, stdev=1822.21, 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=0.00%, sys=3.42%, ctx=46, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=3900KiB/s (3994kB/s), 975KiB/s-3211KiB/s (998kB/s-3288kB/s), io=16.0MiB (16.8MB), run=3827-4201msec WRITE: bw=7800KiB/s (7987kB/s), 1950KiB/s-4511KiB/s (1997kB/s-4619kB/s), io=32.0MiB (33.6MB), run=2724-4201msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144575: Fri Sep 4 10:53:16 2026 read: IOPS=0, BW=3486KiB/s (3570kB/s)(12.0MiB/3525msec) clat (msec): min=910, max=1278, avg=1066.53, stdev=190.08 lat (msec): min=910, max=1278, avg=1066.54, stdev=190.08 clat percentiles (msec): | 1.00th=[ 911], 5.00th=[ 911], 10.00th=[ 911], 20.00th=[ 911], | 30.00th=[ 911], 40.00th=[ 1011], 50.00th=[ 1011], 60.00th=[ 1011], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8078, max= 8159, per=100.00%, avg=8118.50, stdev=57.28, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.03%, sys=8.94%, ctx=282, 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=144576: Fri Sep 4 10:53:16 2026 read: IOPS=0, BW=1073KiB/s (1099kB/s)(4096KiB/3817msec) clat (nsec): min=1337.6M, max=1337.6M, avg=1337597437.00, stdev= 0.00 lat (nsec): min=1337.6M, max=1337.6M, avg=1337600425.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1334], 5.00th=[ 1334], 10.00th=[ 1334], 20.00th=[ 1334], | 30.00th=[ 1334], 40.00th=[ 1334], 50.00th=[ 1334], 60.00th=[ 1334], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] 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=2146KiB/s (2198kB/s)(8192KiB/3817msec); 0 zone resets clat (msec): min=525, max=1710, avg=1118.03, stdev=837.73 lat (msec): min=526, max=1710, avg=1118.59, stdev=837.17 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 527], 10.00th=[ 527], 20.00th=[ 527], | 30.00th=[ 527], 40.00th=[ 527], 50.00th=[ 527], 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= 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) : 750=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.04%, ctx=103, 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=144577: Fri Sep 4 10:53:16 2026 write: IOPS=0, BW=2391KiB/s (2448kB/s)(12.0MiB/5140msec); 0 zone resets clat (msec): min=537, max=3273, avg=1638.20, stdev=1443.78 lat (msec): min=538, max=3273, avg=1638.83, stdev=1443.67 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 1099], 50.00th=[ 1099], 60.00th=[ 1099], | 70.00th=[ 3272], 80.00th=[ 3272], 90.00th=[ 3272], 95.00th=[ 3272], | 99.00th=[ 3272], 99.50th=[ 3272], 99.90th=[ 3272], 99.95th=[ 3272], | 99.99th=[ 3272] bw ( KiB/s): min= 8159, max= 8192, per=100.00%, avg=8175.50, stdev=23.33, 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=2.53%, ctx=54, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144578: Fri Sep 4 10:53:16 2026 write: IOPS=0, BW=3184KiB/s (3261kB/s)(12.0MiB/3859msec); 0 zone resets clat (msec): min=979, max=1785, avg=1255.66, stdev=458.86 lat (msec): min=981, max=1785, avg=1256.70, stdev=458.33 clat percentiles (msec): | 1.00th=[ 978], 5.00th=[ 978], 10.00th=[ 978], 20.00th=[ 978], | 30.00th=[ 978], 40.00th=[ 1003], 50.00th=[ 1003], 60.00th=[ 1003], | 70.00th=[ 1787], 80.00th=[ 1787], 90.00th=[ 1787], 95.00th=[ 1787], | 99.00th=[ 1787], 99.50th=[ 1787], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7968, max= 8047, per=100.00%, avg=8007.50, stdev=55.86, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, 2000=66.67% cpu : usr=0.13%, sys=5.05%, ctx=78, 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=4292KiB/s (4395kB/s), 1073KiB/s-3486KiB/s (1099kB/s-3570kB/s), io=16.0MiB (16.8MB), run=3525-3817msec WRITE: bw=6375KiB/s (6528kB/s), 2146KiB/s-3184KiB/s (2198kB/s-3261kB/s), io=32.0MiB (33.6MB), run=3817-5140msec