== sanity test 398b: DIO and buffer IO race ============== 16:24:52 (1789676692) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.22439 s, 9.6 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=144755: Thu Sep 17 16:27:02 2026 read: IOPS=13, BW=54.1KiB/s (55.4kB/s)(5992KiB/110832msec) clat (usec): min=35, max=894550, avg=35885.32, stdev=33959.25 lat (usec): min=35, max=894551, avg=35894.69, stdev=33954.27 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 71], 10.00th=[ 196], 20.00th=[ 17171], | 30.00th=[ 21890], 40.00th=[ 26346], 50.00th=[ 30802], 60.00th=[ 36439], | 70.00th=[ 42730], 80.00th=[ 52691], 90.00th=[ 67634], 95.00th=[ 79168], | 99.00th=[114820], 99.50th=[135267], 99.90th=[316670], 99.95th=[893387], | 99.99th=[893387] bw ( KiB/s): min= 7, max= 119, per=25.28%, avg=53.84, stdev=22.43, samples=218 iops : min= 1, max= 29, avg=12.81, stdev= 5.66, samples=218 write: IOPS=14, BW=56.8KiB/s (58.2kB/s)(6296KiB/110832msec); 0 zone resets clat (usec): min=967, max=318990, avg=35894.00, stdev=35384.48 lat (usec): min=970, max=318993, avg=35903.77, stdev=35385.48 clat percentiles (usec): | 1.00th=[ 1172], 5.00th=[ 1369], 10.00th=[ 1876], 20.00th=[ 4555], | 30.00th=[ 8717], 40.00th=[ 17171], 50.00th=[ 27657], 60.00th=[ 38011], | 70.00th=[ 47449], 80.00th=[ 61080], 90.00th=[ 83362], 95.00th=[100140], | 99.00th=[152044], 99.50th=[168821], 99.90th=[261096], 99.95th=[320865], | 99.99th=[320865] bw ( KiB/s): min= 7, max= 127, per=25.46%, avg=56.76, stdev=20.06, samples=217 iops : min= 1, max= 31, avg=13.54, stdev= 5.05, samples=217 lat (usec) : 50=0.20%, 100=4.30%, 250=0.42%, 500=0.10%, 750=0.03% lat (usec) : 1000=0.20% lat (msec) : 2=5.34%, 4=4.17%, 10=7.52%, 20=12.08%, 50=40.59% lat (msec) : 100=21.48%, 250=3.45%, 500=0.10%, 1000=0.03% cpu : usr=0.12%, sys=6.06%, ctx=6616, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144756: Thu Sep 17 16:27:02 2026 read: IOPS=13, BW=54.0KiB/s (55.3kB/s)(5940KiB/109905msec) clat (usec): min=37, max=181987, avg=35272.78, stdev=24911.05 lat (usec): min=37, max=181988, avg=35284.16, stdev=24909.93 clat percentiles (usec): | 1.00th=[ 56], 5.00th=[ 71], 10.00th=[ 239], 20.00th=[ 17433], | 30.00th=[ 22152], 40.00th=[ 26084], 50.00th=[ 30540], 60.00th=[ 35914], | 70.00th=[ 43779], 80.00th=[ 53216], 90.00th=[ 66323], 95.00th=[ 81265], | 99.00th=[110625], 99.50th=[135267], 99.90th=[175113], 99.95th=[181404], | 99.99th=[181404] bw ( KiB/s): min= 7, max= 127, per=25.27%, avg=53.81, stdev=20.82, samples=216 iops : min= 1, max= 31, avg=12.80, stdev= 5.24, samples=216 write: IOPS=14, BW=57.8KiB/s (59.1kB/s)(6348KiB/109905msec); 0 zone resets clat (usec): min=1039, max=858927, avg=35890.20, stdev=39808.88 lat (usec): min=1041, max=858928, avg=35893.30, stdev=39808.89 clat percentiles (usec): | 1.00th=[ 1205], 5.00th=[ 1369], 10.00th=[ 1729], 20.00th=[ 4424], | 30.00th=[ 8586], 40.00th=[ 19006], 50.00th=[ 28181], 60.00th=[ 37487], | 70.00th=[ 47449], 80.00th=[ 60031], 90.00th=[ 81265], 95.00th=[ 95945], | 99.00th=[147850], 99.50th=[179307], 99.90th=[316670], 99.95th=[859833], | 99.99th=[859833] bw ( KiB/s): min= 7, max= 117, per=25.89%, avg=57.73, stdev=20.81, samples=215 iops : min= 1, max= 29, avg=13.80, stdev= 5.25, samples=215 lat (usec) : 50=0.36%, 100=4.13%, 250=0.39%, 500=0.10%, 750=0.07% lat (usec) : 1000=0.03% lat (msec) : 2=6.02%, 4=3.87%, 10=7.03%, 20=11.36%, 50=40.95% lat (msec) : 100=22.59%, 250=3.03%, 500=0.03%, 1000=0.03% cpu : usr=0.10%, sys=6.23%, ctx=6598, majf=0, minf=18 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=144757: Thu Sep 17 16:27:02 2026 read: IOPS=13, BW=54.3KiB/s (55.6kB/s)(6028KiB/110956msec) clat (usec): min=31, max=256567, avg=34826.78, stdev=25566.79 lat (usec): min=32, max=256592, avg=34830.60, stdev=25567.52 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 67], 10.00th=[ 100], 20.00th=[ 17171], | 30.00th=[ 21890], 40.00th=[ 26084], 50.00th=[ 30802], 60.00th=[ 36439], | 70.00th=[ 43254], 80.00th=[ 51643], 90.00th=[ 64226], 95.00th=[ 76022], | 99.00th=[117965], 99.50th=[158335], 99.90th=[238027], 99.95th=[256902], | 99.99th=[256902] bw ( KiB/s): min= 7, max= 112, per=25.70%, avg=54.74, stdev=22.75, samples=215 iops : min= 1, max= 28, avg=13.03, stdev= 5.73, samples=215 write: IOPS=14, BW=56.4KiB/s (57.8kB/s)(6260KiB/110956msec); 0 zone resets clat (usec): min=980, max=1074.2k, avg=36992.68, stdev=44545.47 lat (usec): min=982, max=1074.2k, avg=36998.29, stdev=44545.73 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1352], 10.00th=[ 1778], | 20.00th=[ 4686], 30.00th=[ 9503], 40.00th=[ 18220], | 50.00th=[ 27657], 60.00th=[ 36439], 70.00th=[ 47973], | 80.00th=[ 63177], 90.00th=[ 82314], 95.00th=[ 103285], | 99.00th=[ 149947], 99.50th=[ 196084], 99.90th=[ 337642], | 99.95th=[1082131], 99.99th=[1082131] bw ( KiB/s): min= 7, max= 143, per=25.25%, avg=56.32, stdev=21.95, samples=217 iops : min= 1, max= 35, avg=13.43, stdev= 5.51, samples=217 lat (usec) : 50=0.42%, 100=4.49%, 250=0.33%, 500=0.16%, 1000=0.07% lat (msec) : 2=5.50%, 4=3.81%, 10=6.93%, 20=12.30%, 50=40.56% lat (msec) : 100=21.88%, 250=3.42%, 500=0.10%, 2000=0.03% cpu : usr=0.10%, sys=6.08%, ctx=6657, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144759: Thu Sep 17 16:27:02 2026 read: IOPS=13, BW=53.8KiB/s (55.1kB/s)(6052KiB/112536msec) clat (usec): min=36, max=195930, avg=35776.96, stdev=25431.70 lat (usec): min=36, max=195933, avg=35779.11, stdev=25431.47 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 69], 10.00th=[ 388], 20.00th=[ 16909], | 30.00th=[ 21890], 40.00th=[ 26608], 50.00th=[ 31327], 60.00th=[ 36963], | 70.00th=[ 44303], 80.00th=[ 54789], 90.00th=[ 68682], 95.00th=[ 81265], | 99.00th=[112722], 99.50th=[133694], 99.90th=[191890], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 7, max= 144, per=25.40%, avg=54.11, stdev=22.91, samples=217 iops : min= 1, max= 36, avg=12.88, stdev= 5.78, samples=217 write: IOPS=13, BW=55.4KiB/s (56.7kB/s)(6236KiB/112536msec); 0 zone resets clat (usec): min=841, max=1062.5k, avg=37083.53, stdev=43801.65 lat (usec): min=842, max=1062.5k, avg=37090.06, stdev=43803.83 clat percentiles (usec): | 1.00th=[ 1156], 5.00th=[ 1369], 10.00th=[ 1795], | 20.00th=[ 4293], 30.00th=[ 8225], 40.00th=[ 18744], | 50.00th=[ 28443], 60.00th=[ 37487], 70.00th=[ 49021], | 80.00th=[ 62129], 90.00th=[ 84411], 95.00th=[ 105382], | 99.00th=[ 154141], 99.50th=[ 179307], 99.90th=[ 274727], | 99.95th=[1061159], 99.99th=[1061159] bw ( KiB/s): min= 7, max= 143, per=24.72%, avg=55.12, stdev=24.01, samples=220 iops : min= 1, max= 35, avg=13.14, stdev= 6.06, samples=220 lat (usec) : 50=0.46%, 100=4.00%, 250=0.39%, 500=0.23%, 750=0.07% lat (usec) : 1000=0.16% lat (msec) : 2=5.73%, 4=3.94%, 10=7.58%, 20=11.36%, 50=39.45% lat (msec) : 100=22.46%, 250=4.10%, 500=0.03%, 2000=0.03% cpu : usr=0.12%, sys=6.17%, ctx=6670, majf=0, minf=19 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=213KiB/s (218kB/s), 53.8KiB/s-54.3KiB/s (55.1kB/s-55.6kB/s), io=23.4MiB (24.6MB), run=109905-112536msec WRITE: bw=223KiB/s (229kB/s), 55.4KiB/s-57.8KiB/s (56.7kB/s-59.1kB/s), io=24.6MiB (25.7MB), run=109905-112536msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144758: Thu Sep 17 16:29:06 2026 read: IOPS=6, BW=25.5KiB/s (26.1kB/s)(5992KiB/235318msec) clat (msec): min=5, max=911, avg=31.15, stdev=37.23 lat (msec): min=5, max=911, avg=31.15, stdev=37.23 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 43], 90.00th=[ 68], 95.00th=[ 87], | 99.00th=[ 144], 99.50th=[ 222], 99.90th=[ 347], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 127, per=27.17%, avg=27.44, stdev=18.02, samples=423 iops : min= 1, max= 31, avg= 6.22, stdev= 4.54, samples=423 write: IOPS=6, BW=26.8KiB/s (27.4kB/s)(6296KiB/235318msec); 0 zone resets clat (msec): min=29, max=458, avg=119.56, stdev=54.27 lat (msec): min=29, max=458, avg=119.56, stdev=54.27 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 74], | 30.00th=[ 84], 40.00th=[ 96], 50.00th=[ 109], 60.00th=[ 123], | 70.00th=[ 140], 80.00th=[ 161], 90.00th=[ 192], 95.00th=[ 220], | 99.00th=[ 284], 99.50th=[ 313], 99.90th=[ 430], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 7, max= 64, per=24.83%, avg=26.32, stdev=11.96, samples=462 iops : min= 1, max= 16, avg= 5.94, stdev= 3.04, samples=462 lat (msec) : 10=4.79%, 20=18.91%, 50=18.88%, 100=27.02%, 250=28.97% lat (msec) : 500=1.40%, 1000=0.03% cpu : usr=0.05%, sys=1.33%, ctx=5257, 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=144760: Thu Sep 17 16:29:06 2026 read: IOPS=6, BW=25.1KiB/s (25.7kB/s)(5940KiB/236530msec) clat (msec): min=5, max=843, avg=30.03, stdev=35.47 lat (msec): min=5, max=843, avg=30.03, stdev=35.47 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 31], 80.00th=[ 42], 90.00th=[ 63], 95.00th=[ 83], | 99.00th=[ 131], 99.50th=[ 155], 99.90th=[ 477], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 111, per=27.61%, avg=27.89, stdev=19.10, samples=412 iops : min= 1, max= 27, avg= 6.33, stdev= 4.82, samples=412 write: IOPS=6, BW=26.8KiB/s (27.5kB/s)(6348KiB/236530msec); 0 zone resets clat (msec): min=32, max=388, avg=120.64, stdev=56.11 lat (msec): min=32, max=388, avg=120.65, stdev=56.11 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 55], 10.00th=[ 61], 20.00th=[ 73], | 30.00th=[ 85], 40.00th=[ 94], 50.00th=[ 109], 60.00th=[ 123], | 70.00th=[ 142], 80.00th=[ 163], 90.00th=[ 199], 95.00th=[ 232], | 99.00th=[ 300], 99.50th=[ 330], 99.90th=[ 376], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 7, max= 63, per=24.84%, avg=26.33, stdev=11.60, samples=464 iops : min= 1, max= 15, avg= 5.94, stdev= 2.92, samples=464 lat (msec) : 10=4.85%, 20=19.99%, 50=17.77%, 100=26.86%, 250=28.74% lat (msec) : 500=1.76%, 1000=0.03% cpu : usr=0.06%, sys=1.35%, ctx=5089, 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=144761: Thu Sep 17 16:29:06 2026 read: IOPS=6, BW=25.7KiB/s (26.4kB/s)(6028KiB/234159msec) clat (msec): min=5, max=479, avg=30.50, stdev=29.48 lat (msec): min=5, max=479, avg=30.50, stdev=29.48 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 43], 90.00th=[ 65], 95.00th=[ 84], | 99.00th=[ 126], 99.50th=[ 159], 99.90th=[ 338], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 7, max= 103, per=27.06%, avg=27.33, stdev=18.45, samples=427 iops : min= 1, max= 25, avg= 6.19, stdev= 4.62, samples=427 write: IOPS=6, BW=26.7KiB/s (27.4kB/s)(6260KiB/234159msec); 0 zone resets clat (msec): min=32, max=1035, avg=119.94, stdev=58.50 lat (msec): min=32, max=1035, avg=119.95, stdev=58.50 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 53], 10.00th=[ 64], 20.00th=[ 75], | 30.00th=[ 86], 40.00th=[ 96], 50.00th=[ 108], 60.00th=[ 122], | 70.00th=[ 138], 80.00th=[ 159], 90.00th=[ 194], 95.00th=[ 224], | 99.00th=[ 300], 99.50th=[ 334], 99.90th=[ 384], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 63, per=24.83%, avg=26.32, stdev=11.65, samples=460 iops : min= 1, max= 15, avg= 5.94, stdev= 2.95, samples=460 lat (msec) : 10=4.85%, 20=18.26%, 50=19.99%, 100=26.69%, 250=28.65% lat (msec) : 500=1.53%, 2000=0.03% cpu : usr=0.05%, sys=1.33%, ctx=5057, 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=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=144762: Thu Sep 17 16:29:06 2026 read: IOPS=6, BW=26.0KiB/s (26.6kB/s)(6052KiB/232725msec) clat (msec): min=5, max=353, avg=30.13, stdev=29.23 lat (msec): min=5, max=353, avg=30.13, stdev=29.23 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=[ 65], 95.00th=[ 88], | 99.00th=[ 133], 99.50th=[ 180], 99.90th=[ 334], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 7, max= 127, per=27.98%, avg=28.26, stdev=19.76, samples=415 iops : min= 1, max= 31, avg= 6.42, stdev= 4.95, samples=415 write: IOPS=6, BW=26.8KiB/s (27.4kB/s)(6236KiB/232725msec); 0 zone resets clat (msec): min=33, max=1021, avg=119.72, stdev=59.71 lat (msec): min=33, max=1021, avg=119.73, stdev=59.71 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 73], | 30.00th=[ 86], 40.00th=[ 95], 50.00th=[ 109], 60.00th=[ 122], | 70.00th=[ 138], 80.00th=[ 159], 90.00th=[ 192], 95.00th=[ 222], | 99.00th=[ 300], 99.50th=[ 347], 99.90th=[ 456], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 64, per=24.82%, avg=26.31, stdev=11.65, samples=458 iops : min= 1, max= 16, avg= 5.94, stdev= 2.96, samples=458 lat (msec) : 10=5.31%, 20=18.91%, 50=19.14%, 100=26.30%, 250=28.84% lat (msec) : 500=1.46%, 2000=0.03% cpu : usr=0.05%, sys=1.32%, ctx=5128, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=102KiB/s (104kB/s), 25.1KiB/s-26.0KiB/s (25.7kB/s-26.6kB/s), io=23.4MiB (24.6MB), run=232725-236530msec WRITE: bw=106KiB/s (109kB/s), 26.7KiB/s-26.8KiB/s (27.4kB/s-27.5kB/s), io=24.6MiB (25.7MB), run=232725-236530msec 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=144814: Thu Sep 17 16:29:44 2026 read: IOPS=13, BW=222KiB/s (228kB/s)(5920KiB/26641msec) clat (usec): min=44, max=150074, avg=36045.02, stdev=27793.14 lat (usec): min=45, max=150076, avg=36046.60, stdev=27793.18 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 64], 10.00th=[ 73], 20.00th=[ 125], | 30.00th=[ 19792], 40.00th=[ 29492], 50.00th=[ 36963], 60.00th=[ 42206], | 70.00th=[ 51119], 80.00th=[ 58459], 90.00th=[ 69731], 95.00th=[ 81265], | 99.00th=[113771], 99.50th=[132645], 99.90th=[149947], 99.95th=[149947], | 99.99th=[149947] bw ( KiB/s): min= 91, max= 480, per=25.91%, avg=223.10, stdev=72.29, samples=52 iops : min= 5, max= 30, avg=13.21, stdev= 4.65, samples=52 write: IOPS=14, BW=239KiB/s (245kB/s)(6368KiB/26641msec); 0 zone resets clat (usec): min=1373, max=171183, avg=32632.63, stdev=33956.39 lat (usec): min=1375, max=171187, avg=32637.32, stdev=33955.62 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 1860], 10.00th=[ 2311], 20.00th=[ 4948], | 30.00th=[ 8225], 40.00th=[ 12387], 50.00th=[ 20317], 60.00th=[ 30278], | 70.00th=[ 41157], 80.00th=[ 57934], 90.00th=[ 79168], 95.00th=[104334], | 99.00th=[152044], 99.50th=[166724], 99.90th=[170918], 99.95th=[170918], | 99.99th=[170918] bw ( KiB/s): min= 63, max= 477, per=26.50%, avg=240.06, stdev=96.77, samples=52 iops : min= 3, max= 29, avg=14.29, stdev= 6.13, samples=52 lat (usec) : 50=0.13%, 100=8.20%, 250=2.21%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.13% lat (msec) : 2=4.30%, 4=5.47%, 10=9.11%, 20=10.68%, 50=31.38% lat (msec) : 100=24.09%, 250=3.91% cpu : usr=0.08%, sys=6.69%, ctx=1472, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144815: Thu Sep 17 16:29:44 2026 read: IOPS=13, BW=214KiB/s (219kB/s)(5744KiB/26896msec) clat (usec): min=40, max=203200, avg=36629.10, stdev=30442.16 lat (usec): min=41, max=203202, avg=36630.65, stdev=30442.17 clat percentiles (usec): | 1.00th=[ 44], 5.00th=[ 65], 10.00th=[ 75], 20.00th=[ 108], | 30.00th=[ 20055], 40.00th=[ 26608], 50.00th=[ 34341], 60.00th=[ 42206], | 70.00th=[ 50594], 80.00th=[ 61080], 90.00th=[ 72877], 95.00th=[ 87557], | 99.00th=[117965], 99.50th=[187696], 99.90th=[202376], 99.95th=[202376], | 99.99th=[202376] bw ( KiB/s): min= 21, max= 438, per=25.87%, avg=222.72, stdev=94.43, samples=50 iops : min= 1, max= 27, avg=13.20, stdev= 5.94, samples=50 write: IOPS=15, BW=243KiB/s (249kB/s)(6544KiB/26896msec); 0 zone resets clat (usec): min=1322, max=263586, avg=32906.42, stdev=40209.40 lat (usec): min=1325, max=263589, avg=32910.20, stdev=40208.91 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1909], 10.00th=[ 2868], 20.00th=[ 4948], | 30.00th=[ 7373], 40.00th=[ 12911], 50.00th=[ 19268], 60.00th=[ 28443], | 70.00th=[ 38011], 80.00th=[ 53740], 90.00th=[ 76022], 95.00th=[104334], | 99.00th=[208667], 99.50th=[231736], 99.90th=[263193], 99.95th=[263193], | 99.99th=[263193] bw ( KiB/s): min= 63, max= 536, per=26.95%, avg=244.21, stdev=109.35, samples=52 iops : min= 3, max= 33, avg=14.56, stdev= 6.96, samples=52 lat (usec) : 50=0.91%, 100=7.94%, 250=1.56%, 500=0.39%, 1000=0.13% lat (msec) : 2=3.39%, 4=4.82%, 10=11.20%, 20=10.68%, 50=32.55% lat (msec) : 100=22.40%, 250=3.91%, 500=0.13% cpu : usr=0.10%, sys=6.82%, ctx=1511, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144816: Thu Sep 17 16:29:44 2026 read: IOPS=14, BW=225KiB/s (230kB/s)(6256KiB/27799msec) clat (usec): min=41, max=156566, avg=37391.14, stdev=31347.66 lat (usec): min=42, max=156567, avg=37393.08, stdev=31347.77 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 63], 10.00th=[ 71], 20.00th=[ 97], | 30.00th=[ 20579], 40.00th=[ 28705], 50.00th=[ 33817], 60.00th=[ 39060], | 70.00th=[ 50070], 80.00th=[ 64226], 90.00th=[ 79168], 95.00th=[ 99091], | 99.00th=[129500], 99.50th=[147850], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 63, max= 381, per=26.02%, avg=224.00, stdev=72.43, samples=54 iops : min= 3, max= 23, avg=13.28, stdev= 4.65, samples=54 write: IOPS=13, BW=217KiB/s (222kB/s)(6032KiB/27799msec); 0 zone resets clat (usec): min=1145, max=235985, avg=34593.33, stdev=36266.94 lat (usec): min=1186, max=235987, avg=34605.32, stdev=36272.30 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 2212], 10.00th=[ 3359], 20.00th=[ 6259], | 30.00th=[ 8717], 40.00th=[ 13042], 50.00th=[ 21103], 60.00th=[ 31327], | 70.00th=[ 44303], 80.00th=[ 62129], 90.00th=[ 83362], 95.00th=[107480], | 99.00th=[179307], 99.50th=[191890], 99.90th=[235930], 99.95th=[235930], | 99.99th=[235930] bw ( KiB/s): min= 94, max= 444, per=23.49%, avg=212.80, stdev=82.44, samples=54 iops : min= 5, max= 27, avg=12.57, stdev= 5.22, samples=54 lat (usec) : 50=1.04%, 100=9.38%, 250=1.17%, 500=0.13%, 1000=0.65% lat (msec) : 2=1.82%, 4=4.30%, 10=10.29%, 20=10.03%, 50=32.29% lat (msec) : 100=23.70%, 250=5.21% cpu : usr=0.09%, sys=6.25%, ctx=1496, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144817: Thu Sep 17 16:29:44 2026 read: IOPS=13, BW=220KiB/s (226kB/s)(6032KiB/27371msec) clat (usec): min=37, max=199945, avg=36397.49, stdev=31025.38 lat (usec): min=37, max=199947, avg=36399.02, stdev=31025.37 clat percentiles (usec): | 1.00th=[ 43], 5.00th=[ 59], 10.00th=[ 68], 20.00th=[ 89], | 30.00th=[ 16909], 40.00th=[ 27919], 50.00th=[ 36963], 60.00th=[ 42206], | 70.00th=[ 51119], 80.00th=[ 60556], 90.00th=[ 78119], 95.00th=[ 88605], | 99.00th=[129500], 99.50th=[141558], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 31, max= 502, per=26.20%, avg=225.56, stdev=104.22, samples=52 iops : min= 1, max= 31, avg=13.37, stdev= 6.64, samples=52 write: IOPS=14, BW=229KiB/s (234kB/s)(6256KiB/27371msec); 0 zone resets clat (usec): min=1440, max=342918, avg=34065.88, stdev=39078.36 lat (usec): min=1444, max=342921, avg=34069.12, stdev=39078.19 clat percentiles (usec): | 1.00th=[ 1745], 5.00th=[ 2245], 10.00th=[ 3425], 20.00th=[ 5997], | 30.00th=[ 9896], 40.00th=[ 14091], 50.00th=[ 19268], 60.00th=[ 31065], | 70.00th=[ 41157], 80.00th=[ 57410], 90.00th=[ 78119], 95.00th=[106431], | 99.00th=[170918], 99.50th=[248513], 99.90th=[341836], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 63, max= 447, per=25.42%, avg=230.30, stdev=85.94, samples=53 iops : min= 3, max= 27, avg=13.68, stdev= 5.42, samples=53 lat (usec) : 50=1.30%, 100=9.64%, 250=1.95%, 500=0.26%, 750=0.13% lat (usec) : 1000=0.26% lat (msec) : 2=1.82%, 4=4.17%, 10=9.64%, 20=12.50%, 50=29.95% lat (msec) : 100=24.35%, 250=3.91%, 500=0.13% cpu : usr=0.08%, sys=6.58%, ctx=1520, majf=0, minf=18 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=862KiB/s (882kB/s), 214KiB/s-225KiB/s (219kB/s-230kB/s), io=23.4MiB (24.5MB), run=26641-27799msec WRITE: bw=907KiB/s (928kB/s), 217KiB/s-243KiB/s (222kB/s-249kB/s), io=24.6MiB (25.8MB), run=26641-27799msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144810: Thu Sep 17 16:30:32 2026 read: IOPS=5, BW=80.6KiB/s (82.5kB/s)(5920KiB/73474msec) clat (msec): min=7, max=235, avg=42.53, stdev=33.31 lat (msec): min=7, max=235, avg=42.53, stdev=33.31 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 19], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 46], 80.00th=[ 59], 90.00th=[ 83], 95.00th=[ 109], | 99.00th=[ 186], 99.50th=[ 209], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 30, max= 319, per=27.58%, avg=87.44, stdev=50.41, samples=133 iops : min= 1, max= 19, avg= 4.72, stdev= 3.18, samples=133 write: IOPS=5, BW=86.7KiB/s (88.8kB/s)(6368KiB/73474msec); 0 zone resets clat (msec): min=47, max=396, avg=144.12, stdev=59.33 lat (msec): min=47, max=396, avg=144.13, stdev=59.33 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 71], 10.00th=[ 79], 20.00th=[ 94], | 30.00th=[ 107], 40.00th=[ 118], 50.00th=[ 131], 60.00th=[ 148], | 70.00th=[ 167], 80.00th=[ 186], 90.00th=[ 230], 95.00th=[ 251], | 99.00th=[ 330], 99.50th=[ 363], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 31, max= 192, per=26.19%, avg=87.47, stdev=36.10, samples=143 iops : min= 1, max= 12, avg= 4.71, stdev= 2.36, samples=143 lat (msec) : 10=0.78%, 20=10.42%, 50=24.48%, 100=21.35%, 250=40.36% lat (msec) : 500=2.60% cpu : usr=0.05%, sys=1.44%, ctx=1337, 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=144811: Thu Sep 17 16:30:32 2026 read: IOPS=4, BW=76.2KiB/s (78.1kB/s)(5744KiB/75359msec) clat (msec): min=8, max=286, avg=41.60, stdev=36.07 lat (msec): min=8, max=286, avg=41.60, stdev=36.07 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 12], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 28], 50.00th=[ 31], 60.00th=[ 38], | 70.00th=[ 44], 80.00th=[ 54], 90.00th=[ 83], 95.00th=[ 108], | 99.00th=[ 211], 99.50th=[ 228], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 29, max= 286, per=28.60%, avg=90.66, stdev=56.51, samples=125 iops : min= 1, max= 17, avg= 4.92, stdev= 3.58, samples=125 write: IOPS=5, BW=86.8KiB/s (88.9kB/s)(6544KiB/75359msec); 0 zone resets clat (msec): min=42, max=413, avg=147.03, stdev=60.63 lat (msec): min=42, max=413, avg=147.04, stdev=60.63 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 72], 10.00th=[ 83], 20.00th=[ 96], | 30.00th=[ 108], 40.00th=[ 118], 50.00th=[ 134], 60.00th=[ 150], | 70.00th=[ 171], 80.00th=[ 194], 90.00th=[ 232], 95.00th=[ 275], | 99.00th=[ 321], 99.50th=[ 347], 99.90th=[ 414], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 29, max= 192, per=26.01%, avg=86.86, stdev=35.13, samples=148 iops : min= 1, max= 12, avg= 4.68, stdev= 2.27, samples=148 lat (msec) : 10=1.30%, 20=10.81%, 50=24.87%, 100=19.27%, 250=39.71% lat (msec) : 500=4.04% cpu : usr=0.05%, sys=1.24%, ctx=1321, 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=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=144812: Thu Sep 17 16:30:32 2026 read: IOPS=5, BW=88.8KiB/s (90.9kB/s)(6256KiB/70469msec) clat (msec): min=8, max=302, avg=41.71, stdev=36.42 lat (msec): min=8, max=302, avg=41.72, stdev=36.42 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 17], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 32], 60.00th=[ 37], | 70.00th=[ 44], 80.00th=[ 58], 90.00th=[ 78], 95.00th=[ 123], | 99.00th=[ 174], 99.50th=[ 266], 99.90th=[ 305], 99.95th=[ 305], | 99.99th=[ 305] bw ( KiB/s): min= 30, max= 318, per=30.45%, avg=96.53, stdev=66.99, samples=128 iops : min= 1, max= 19, avg= 5.27, stdev= 4.26, samples=128 write: IOPS=5, BW=85.6KiB/s (87.7kB/s)(6032KiB/70469msec); 0 zone resets clat (msec): min=39, max=475, avg=142.98, stdev=64.45 lat (msec): min=39, max=475, avg=142.98, stdev=64.45 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 69], 10.00th=[ 77], 20.00th=[ 93], | 30.00th=[ 104], 40.00th=[ 114], 50.00th=[ 130], 60.00th=[ 142], | 70.00th=[ 161], 80.00th=[ 188], 90.00th=[ 236], 95.00th=[ 268], | 99.00th=[ 338], 99.50th=[ 363], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 30, max= 160, per=25.69%, avg=85.79, stdev=36.04, samples=138 iops : min= 1, max= 10, avg= 4.60, stdev= 2.36, samples=138 lat (msec) : 10=0.52%, 20=13.93%, 50=23.83%, 100=21.88%, 250=36.20% lat (msec) : 500=3.65% cpu : usr=0.03%, sys=1.39%, ctx=1322, 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=144813: Thu Sep 17 16:30:32 2026 read: IOPS=5, BW=83.2KiB/s (85.2kB/s)(6032KiB/72480msec) clat (msec): min=5, max=286, avg=43.53, stdev=34.85 lat (msec): min=5, max=286, avg=43.54, stdev=34.85 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 12], 10.00th=[ 14], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 28], 50.00th=[ 34], 60.00th=[ 41], | 70.00th=[ 51], 80.00th=[ 59], 90.00th=[ 84], 95.00th=[ 120], | 99.00th=[ 180], 99.50th=[ 197], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 30, max= 311, per=30.22%, avg=95.80, stdev=56.94, samples=123 iops : min= 1, max= 19, avg= 5.25, stdev= 3.61, samples=123 write: IOPS=5, BW=86.3KiB/s (88.4kB/s)(6256KiB/72480msec); 0 zone resets clat (msec): min=49, max=415, avg=143.17, stdev=62.97 lat (msec): min=49, max=415, avg=143.18, stdev=62.97 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 66], 10.00th=[ 77], 20.00th=[ 90], | 30.00th=[ 107], 40.00th=[ 120], 50.00th=[ 132], 60.00th=[ 146], | 70.00th=[ 163], 80.00th=[ 188], 90.00th=[ 228], 95.00th=[ 264], | 99.00th=[ 376], 99.50th=[ 414], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 30, max= 190, per=26.15%, avg=87.35, stdev=36.87, samples=141 iops : min= 1, max= 11, avg= 4.72, stdev= 2.36, samples=141 lat (msec) : 10=0.65%, 20=10.16%, 50=23.57%, 100=25.13%, 250=36.59% lat (msec) : 500=3.91% cpu : usr=0.06%, sys=1.39%, ctx=1314, 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=318KiB/s (325kB/s), 76.2KiB/s-88.8KiB/s (78.1kB/s-90.9kB/s), io=23.4MiB (24.5MB), run=70469-75359msec WRITE: bw=334KiB/s (342kB/s), 85.6KiB/s-86.8KiB/s (87.7kB/s-88.9kB/s), io=24.6MiB (25.8MB), run=70469-75359msec 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=144834: Thu Sep 17 16:30:50 2026 read: IOPS=1, BW=1301KiB/s (1332kB/s)(7168KiB/5510msec) clat (usec): min=559, max=3222.9k, avg=624211.00, stdev=1157436.33 lat (usec): min=560, max=3222.9k, avg=624212.70, stdev=1157436.36 clat percentiles (usec): | 1.00th=[ 562], 5.00th=[ 562], 10.00th=[ 562], | 20.00th=[ 758], 30.00th=[ 126354], 40.00th=[ 126354], | 50.00th=[ 235930], 60.00th=[ 387974], 70.00th=[ 387974], | 80.00th=[ 396362], 90.00th=[3238003], 95.00th=[3238003], | 99.00th=[3238003], 99.50th=[3238003], 99.90th=[3238003], | 99.95th=[3238003], 99.99th=[3238003] bw ( KiB/s): min= 1976, max= 3923, per=84.60%, avg=2921.25, stdev=1070.88, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=929KiB/s (952kB/s)(5120KiB/5510msec); 0 zone resets clat (msec): min=125, max=204, avg=165.73, stdev=33.21 lat (msec): min=125, max=205, avg=165.79, stdev=33.21 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 126], 10.00th=[ 126], 20.00th=[ 126], | 30.00th=[ 140], 40.00th=[ 140], 50.00th=[ 167], 60.00th=[ 167], | 70.00th=[ 190], 80.00th=[ 190], 90.00th=[ 205], 95.00th=[ 205], | 99.00th=[ 205], 99.50th=[ 205], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 3771, max= 5930, per=100.00%, avg=4850.50, stdev=1526.64, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 lat (usec) : 750=8.33%, 1000=8.33% lat (msec) : 250=58.33%, 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=7.96%, ctx=331, 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=144835: Thu Sep 17 16:30:50 2026 read: IOPS=0, BW=400KiB/s (410kB/s)(2048KiB/5119msec) clat (usec): min=616, max=278822, avg=139719.55, stdev=196721.26 lat (usec): min=618, max=278825, avg=139721.94, stdev=196722.01 clat percentiles (usec): | 1.00th=[ 619], 5.00th=[ 619], 10.00th=[ 619], 20.00th=[ 619], | 30.00th=[ 619], 40.00th=[ 619], 50.00th=[ 619], 60.00th=[278922], | 70.00th=[278922], 80.00th=[278922], 90.00th=[278922], 95.00th=[278922], | 99.00th=[278922], 99.50th=[278922], 99.90th=[278922], 99.95th=[278922], | 99.99th=[278922] bw ( KiB/s): min= 1519, max= 2048, per=51.65%, avg=1783.50, stdev=374.06, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=1, BW=2000KiB/s (2048kB/s)(10.0MiB/5119msec); 0 zone resets clat (msec): min=101, max=1176, avg=461.05, stdev=393.37 lat (msec): min=101, max=1176, avg=461.15, stdev=393.35 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 103], 10.00th=[ 103], 20.00th=[ 121], | 30.00th=[ 122], 40.00th=[ 211], 50.00th=[ 321], 60.00th=[ 372], | 70.00th=[ 506], 80.00th=[ 575], 90.00th=[ 1099], 95.00th=[ 1183], | 99.00th=[ 1183], 99.50th=[ 1183], 99.90th=[ 1183], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 1885, max= 5988, per=62.20%, avg=3006.67, stdev=1685.08, samples=6 iops : min= 1, max= 5, avg= 2.33, stdev= 1.51, samples=6 lat (usec) : 750=8.33% lat (msec) : 250=33.33%, 500=25.00%, 750=16.67%, 2000=16.67% cpu : usr=0.04%, sys=11.53%, 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=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=144836: Thu Sep 17 16:30:50 2026 read: IOPS=1, BW=1036KiB/s (1061kB/s)(6144KiB/5931msec) clat (msec): min=146, max=658, avg=361.43, stdev=214.35 lat (msec): min=146, max=658, avg=361.43, stdev=214.35 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 155], | 30.00th=[ 155], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 317], | 70.00th=[ 584], 80.00th=[ 584], 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= 1976, max= 3992, per=72.86%, avg=2516.00, stdev=984.59, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 write: IOPS=1, BW=1036KiB/s (1061kB/s)(6144KiB/5931msec); 0 zone resets clat (msec): min=258, max=1153, avg=585.45, stdev=419.06 lat (msec): min=258, max=1153, avg=585.60, stdev=419.13 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 464], | 70.00th=[ 1083], 80.00th=[ 1083], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 1526, max= 2048, per=39.50%, avg=1909.33, stdev=197.41, samples=6 iops : min= 1, max= 2, avg= 1.33, stdev= 0.52, samples=6 lat (msec) : 250=16.67%, 500=50.00%, 750=16.67%, 2000=16.67% cpu : usr=0.00%, sys=9.17%, ctx=290, 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=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=144837: Thu Sep 17 16:30:50 2026 read: IOPS=1, BW=1052KiB/s (1077kB/s)(5120KiB/4866msec) clat (msec): min=5, max=410, avg=203.60, stdev=146.69 lat (msec): min=5, max=410, avg=203.60, stdev=146.69 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 6], 10.00th=[ 6], 20.00th=[ 6], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 178], 60.00th=[ 178], | 70.00th=[ 253], 80.00th=[ 253], 90.00th=[ 409], 95.00th=[ 409], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 409], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 4087, max= 4096, per=100.00%, avg=4091.50, stdev= 6.36, samples=2 iops : min= 3, max= 4, avg= 3.50, stdev= 0.71, samples=2 write: IOPS=1, BW=1473KiB/s (1508kB/s)(7168KiB/4866msec); 0 zone resets clat (msec): min=146, max=1553, avg=544.28, stdev=557.53 lat (msec): min=146, max=1554, avg=544.54, stdev=557.86 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 169], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 215], 60.00th=[ 451], | 70.00th=[ 451], 80.00th=[ 1099], 90.00th=[ 1552], 95.00th=[ 1552], | 99.00th=[ 1552], 99.50th=[ 1552], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 1556, max= 5657, per=68.75%, avg=3323.25, stdev=1911.40, samples=4 iops : min= 1, max= 5, avg= 2.75, stdev= 2.06, samples=4 lat (msec) : 10=8.33%, 250=50.00%, 500=25.00%, 2000=16.67% cpu : usr=0.00%, sys=10.11%, 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=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=3453KiB/s (3536kB/s), 400KiB/s-1301KiB/s (410kB/s-1332kB/s), io=20.0MiB (20.0MB), run=4866-5931msec WRITE: bw=4834KiB/s (4950kB/s), 929KiB/s-2000KiB/s (952kB/s-2048kB/s), io=28.0MiB (29.4MB), run=4866-5931msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144839: Thu Sep 17 16:30:50 2026 read: IOPS=1, BW=1326KiB/s (1358kB/s)(7168KiB/5407msec) clat (msec): min=76, max=1874, avg=483.85, stdev=674.18 lat (msec): min=76, max=1874, avg=483.85, stdev=674.18 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 109], | 30.00th=[ 125], 40.00th=[ 125], 50.00th=[ 129], 60.00th=[ 203], | 70.00th=[ 203], 80.00th=[ 877], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 1368, max= 3976, per=60.13%, avg=2277.00, stdev=990.09, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=947KiB/s (970kB/s)(5120KiB/5407msec); 0 zone resets clat (msec): min=265, max=582, avg=378.73, stdev=119.92 lat (msec): min=265, max=583, avg=378.82, stdev=119.93 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 342], 40.00th=[ 342], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 1988, max= 2048, per=38.20%, avg=2025.50, stdev=27.23, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 1000=8.33% lat (msec) : 2000=8.33% cpu : usr=0.00%, sys=2.96%, ctx=79, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=144840: Thu Sep 17 16:30:50 2026 read: IOPS=0, BW=402KiB/s (412kB/s)(2048KiB/5093msec) clat (msec): min=41, max=204, avg=123.26, stdev=115.25 lat (msec): min=41, max=204, avg=123.26, stdev=115.25 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 42], 10.00th=[ 42], 20.00th=[ 42], | 30.00th=[ 42], 40.00th=[ 42], 50.00th=[ 42], 60.00th=[ 205], | 70.00th=[ 205], 80.00th=[ 205], 90.00th=[ 205], 95.00th=[ 205], | 99.00th=[ 205], 99.50th=[ 205], 99.90th=[ 205], 99.95th=[ 205], | 99.99th=[ 205] bw ( KiB/s): min= 1352, max= 2023, per=44.56%, avg=1687.50, stdev=474.47, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2011KiB/s (2059kB/s)(10.0MiB/5093msec); 0 zone resets clat (msec): min=60, max=1744, avg=472.27, stdev=530.19 lat (msec): min=60, max=1744, avg=472.38, stdev=530.20 clat percentiles (msec): | 1.00th=[ 61], 5.00th=[ 61], 10.00th=[ 61], 20.00th=[ 78], | 30.00th=[ 125], 40.00th=[ 140], 50.00th=[ 321], 60.00th=[ 393], | 70.00th=[ 393], 80.00th=[ 439], 90.00th=[ 1036], 95.00th=[ 1737], | 99.00th=[ 1737], 99.50th=[ 1737], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 2039, max= 6071, per=68.70%, avg=3642.40, stdev=1681.35, samples=5 iops : min= 1, max= 5, avg= 2.80, stdev= 1.48, samples=5 lat (msec) : 50=8.33%, 100=16.67%, 250=25.00%, 500=33.33%, 2000=16.67% cpu : usr=0.02%, sys=4.63%, ctx=78, 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=144841: Thu Sep 17 16:30:50 2026 read: IOPS=1, BW=1202KiB/s (1231kB/s)(6144KiB/5110msec) clat (msec): min=84, max=346, avg=144.20, stdev=100.21 lat (msec): min=84, max=346, avg=144.20, stdev=100.21 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 88], | 30.00th=[ 88], 40.00th=[ 103], 50.00th=[ 103], 60.00th=[ 120], | 70.00th=[ 125], 80.00th=[ 125], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 2023, max= 4047, per=67.05%, avg=2539.25, stdev=1005.22, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 write: IOPS=1, BW=1202KiB/s (1231kB/s)(6144KiB/5110msec); 0 zone resets clat (msec): min=348, max=1644, avg=699.71, stdev=473.93 lat (msec): min=348, max=1644, avg=699.82, stdev=473.92 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 443], | 30.00th=[ 443], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 634], 80.00th=[ 634], 90.00th=[ 1653], 95.00th=[ 1653], | 99.00th=[ 1653], 99.50th=[ 1653], 99.90th=[ 1653], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 1526, max= 2048, per=36.34%, avg=1927.00, stdev=224.51, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=16.67%, 250=25.00%, 500=25.00%, 750=25.00%, 2000=8.33% cpu : usr=0.00%, sys=2.90%, ctx=62, 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=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=144842: Thu Sep 17 16:30:50 2026 read: IOPS=0, BW=994KiB/s (1018kB/s)(5120KiB/5152msec) clat (msec): min=72, max=240, avg=141.98, stdev=62.45 lat (msec): min=72, max=240, avg=141.98, stdev=62.45 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 73], 10.00th=[ 73], 20.00th=[ 73], | 30.00th=[ 109], 40.00th=[ 109], 50.00th=[ 140], 60.00th=[ 140], | 70.00th=[ 150], 80.00th=[ 150], 90.00th=[ 241], 95.00th=[ 241], | 99.00th=[ 241], 99.50th=[ 241], 99.90th=[ 241], 99.95th=[ 241], | 99.99th=[ 241] bw ( KiB/s): min= 8094, max= 8094, per=100.00%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1391KiB/s (1425kB/s)(7168KiB/5152msec); 0 zone resets clat (msec): min=253, max=1500, avg=617.61, stdev=472.90 lat (msec): min=254, max=1500, avg=617.71, stdev=472.89 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 255], 10.00th=[ 255], 20.00th=[ 296], | 30.00th=[ 334], 40.00th=[ 334], 50.00th=[ 347], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 1028], 90.00th=[ 1502], 95.00th=[ 1502], | 99.00th=[ 1502], 99.50th=[ 1502], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 1372, max= 4079, per=43.63%, avg=2313.00, stdev=1028.53, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=33.33%, 750=8.33%, 2000=16.67% cpu : usr=0.02%, sys=3.61%, ctx=127, 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=3788KiB/s (3879kB/s), 402KiB/s-1326KiB/s (412kB/s-1358kB/s), io=20.0MiB (20.0MB), run=5093-5407msec WRITE: bw=5303KiB/s (5430kB/s), 947KiB/s-2011KiB/s (970kB/s-2059kB/s), io=28.0MiB (29.4MB), run=5093-5407msec 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=144856: Thu Sep 17 16:31:10 2026 read: IOPS=0, BW=2160KiB/s (2211kB/s)(12.0MiB/5690msec) clat (msec): min=671, max=3677, avg=1875.67, stdev=1589.53 lat (msec): min=671, max=3677, avg=1875.68, stdev=1589.53 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 3675], 80.00th=[ 3675], 90.00th=[ 3675], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] 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) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.74%, ctx=50, 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=144857: Thu Sep 17 16:31:10 2026 read: IOPS=0, BW=1146KiB/s (1174kB/s)(4096KiB/3573msec) clat (nsec): min=833104k, max=833104k, avg=833104407.00, stdev= 0.00 lat (nsec): min=833107k, max=833107k, avg=833106657.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] 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=2293KiB/s (2348kB/s)(8192KiB/3573msec); 0 zone resets clat (msec): min=581, max=2028, avg=1305.43, stdev=1023.23 lat (msec): min=583, max=2029, avg=1306.22, stdev=1022.67 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 2022], | 70.00th=[ 2022], 80.00th=[ 2022], 90.00th=[ 2022], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] 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 lat (msec) : 750=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.03%, sys=3.72%, ctx=78, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144858: Thu Sep 17 16:31:10 2026 write: IOPS=0, BW=2064KiB/s (2113kB/s)(12.0MiB/5954msec); 0 zone resets clat (msec): min=1185, max=3205, avg=1938.36, stdev=1103.63 lat (msec): min=1185, max=3205, avg=1938.97, stdev=1103.52 clat percentiles (msec): | 1.00th=[ 1183], 5.00th=[ 1183], 10.00th=[ 1183], 20.00th=[ 1183], | 30.00th=[ 1183], 40.00th=[ 1418], 50.00th=[ 1418], 60.00th=[ 1418], | 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= 8062, max= 8192, per=100.00%, avg=8127.00, stdev=91.92, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=2.07%, ctx=44, 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=144859: Thu Sep 17 16:31:10 2026 write: IOPS=0, BW=2287KiB/s (2341kB/s)(12.0MiB/5374msec); 0 zone resets clat (msec): min=1012, max=3016, avg=1776.76, stdev=1083.62 lat (msec): min=1013, max=3017, avg=1777.47, stdev=1083.15 clat percentiles (msec): | 1.00th=[ 1011], 5.00th=[ 1011], 10.00th=[ 1011], 20.00th=[ 1011], | 30.00th=[ 1011], 40.00th=[ 1301], 50.00th=[ 1301], 60.00th=[ 1301], | 70.00th=[ 3004], 80.00th=[ 3004], 90.00th=[ 3004], 95.00th=[ 3004], | 99.00th=[ 3004], 99.50th=[ 3004], 99.90th=[ 3004], 99.95th=[ 3004], | 99.99th=[ 3004] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=1.66%, ctx=43, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2879KiB/s (2949kB/s), 1146KiB/s-2160KiB/s (1174kB/s-2211kB/s), io=16.0MiB (16.8MB), run=3573-5690msec WRITE: bw=5504KiB/s (5636kB/s), 2064KiB/s-2293KiB/s (2113kB/s-2348kB/s), io=32.0MiB (33.6MB), run=3573-5954msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144852: Thu Sep 17 16:31:10 2026 read: IOPS=0, BW=2228KiB/s (2281kB/s)(12.0MiB/5516msec) clat (msec): min=506, max=4080, avg=1817.88, stdev=1967.74 lat (msec): min=506, max=4080, avg=1817.88, stdev=1967.74 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 869], 50.00th=[ 869], 60.00th=[ 869], | 70.00th=[ 4077], 80.00th=[ 4077], 90.00th=[ 4077], 95.00th=[ 4077], | 99.00th=[ 4077], 99.50th=[ 4077], 99.90th=[ 4077], 99.95th=[ 4077], | 99.99th=[ 4077] bw ( KiB/s): min= 8126, max= 8143, per=100.00%, avg=8134.50, stdev=12.02, 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=8.14%, ctx=813, 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=144853: Thu Sep 17 16:31:10 2026 read: IOPS=0, BW=1296KiB/s (1327kB/s)(4096KiB/3160msec) clat (nsec): min=623118k, max=623118k, avg=623118391.00, stdev= 0.00 lat (nsec): min=623121k, max=623121k, avg=623121128.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2592KiB/s (2655kB/s)(8192KiB/3160msec); 0 zone resets clat (msec): min=817, max=1626, avg=1222.03, stdev=572.61 lat (msec): min=817, max=1627, avg=1222.43, stdev=572.62 clat percentiles (msec): | 1.00th=[ 818], 5.00th=[ 818], 10.00th=[ 818], 20.00th=[ 818], | 30.00th=[ 818], 40.00th=[ 818], 50.00th=[ 818], 60.00th=[ 1620], | 70.00th=[ 1620], 80.00th=[ 1620], 90.00th=[ 1620], 95.00th=[ 1620], | 99.00th=[ 1620], 99.50th=[ 1620], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.03%, sys=4.56%, ctx=162, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144854: Thu Sep 17 16:31:10 2026 write: IOPS=0, BW=1907KiB/s (1953kB/s)(12.0MiB/6443msec); 0 zone resets clat (msec): min=1162, max=2878, avg=2076.07, stdev=863.42 lat (msec): min=1162, max=2879, avg=2076.58, stdev=863.44 clat percentiles (msec): | 1.00th=[ 1167], 5.00th=[ 1167], 10.00th=[ 1167], 20.00th=[ 1167], | 30.00th=[ 1167], 40.00th=[ 2198], 50.00th=[ 2198], 60.00th=[ 2198], | 70.00th=[ 2869], 80.00th=[ 2869], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 8110, max= 8159, per=100.00%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.94%, ctx=60, 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=144855: Thu Sep 17 16:31:10 2026 write: IOPS=0, BW=2349KiB/s (2405kB/s)(12.0MiB/5232msec); 0 zone resets clat (msec): min=617, max=3345, avg=1711.67, stdev=1441.89 lat (msec): min=621, max=3345, avg=1713.53, stdev=1440.29 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 1167], 50.00th=[ 1167], 60.00th=[ 1167], | 70.00th=[ 3339], 80.00th=[ 3339], 90.00th=[ 3339], 95.00th=[ 3339], | 99.00th=[ 3339], 99.50th=[ 3339], 99.90th=[ 3339], 99.95th=[ 3339], | 99.99th=[ 3339] bw ( KiB/s): min= 8126, max= 8175, per=100.00%, avg=8150.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=3.12%, ctx=43, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2970KiB/s (3042kB/s), 1296KiB/s-2228KiB/s (1327kB/s-2281kB/s), io=16.0MiB (16.8MB), run=3160-5516msec WRITE: bw=5086KiB/s (5208kB/s), 1907KiB/s-2592KiB/s (1953kB/s-2655kB/s), io=32.0MiB (33.6MB), run=3160-6443msec