== sanity test 398b: DIO and buffer IO race ============== 06:42:11 (1778928131) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.8468 s, 17.7 MB/s mix direct rw 4096 by fio with 4 jobs... mix buffer rw 4096 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=psync, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=181543: Sat May 16 06:43:19 2026 read: IOPS=25, BW=103KiB/s (105kB/s)(5992KiB/58404msec) clat (usec): min=32, max=615384, avg=21382.12, stdev=19968.29 lat (usec): min=33, max=615385, avg=21383.34, stdev=19968.39 clat percentiles (usec): | 1.00th=[ 68], 5.00th=[ 6915], 10.00th=[ 8979], 20.00th=[ 11207], | 30.00th=[ 13566], 40.00th=[ 15926], 50.00th=[ 18744], 60.00th=[ 21627], | 70.00th=[ 25035], 80.00th=[ 29492], 90.00th=[ 36439], 95.00th=[ 43254], | 99.00th=[ 66323], 99.50th=[ 70779], 99.90th=[137364], 99.95th=[616563], | 99.99th=[616563] bw ( KiB/s): min= 15, max= 216, per=24.77%, avg=101.82, stdev=26.73, samples=116 iops : min= 3, max= 54, avg=24.97, stdev= 6.77, samples=116 write: IOPS=26, BW=108KiB/s (110kB/s)(6296KiB/58404msec); 0 zone resets clat (usec): min=798, max=95458, avg=16629.40, stdev=14181.45 lat (usec): min=799, max=95460, avg=16630.66, stdev=14181.46 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1893], 10.00th=[ 2409], 20.00th=[ 3654], | 30.00th=[ 5735], 40.00th=[10028], 50.00th=[13435], 60.00th=[17171], | 70.00th=[21365], 80.00th=[27919], 90.00th=[35390], 95.00th=[43779], | 99.00th=[62653], 99.50th=[68682], 99.90th=[93848], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 31, max= 224, per=25.10%, avg=107.91, stdev=31.00, samples=115 iops : min= 7, max= 56, avg=26.50, stdev= 7.82, samples=115 lat (usec) : 50=0.13%, 100=0.88%, 250=0.68%, 500=0.03%, 1000=0.03% lat (msec) : 2=2.86%, 4=8.95%, 10=13.64%, 20=34.08%, 50=36.04% lat (msec) : 100=2.57%, 250=0.07%, 750=0.03% cpu : usr=0.13%, sys=18.60%, ctx=8276, 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=181544: Sat May 16 06:43:19 2026 read: IOPS=25, BW=104KiB/s (106kB/s)(5940KiB/57264msec) clat (usec): min=19, max=138122, avg=20629.11, stdev=11592.26 lat (usec): min=20, max=138123, avg=20630.27, stdev=11592.31 clat percentiles (usec): | 1.00th=[ 67], 5.00th=[ 7373], 10.00th=[ 9372], 20.00th=[ 11731], | 30.00th=[ 14091], 40.00th=[ 16057], 50.00th=[ 18744], 60.00th=[ 21365], | 70.00th=[ 24773], 80.00th=[ 28705], 90.00th=[ 33817], 95.00th=[ 40633], | 99.00th=[ 60031], 99.50th=[ 67634], 99.90th=[ 82314], 99.95th=[137364], | 99.99th=[137364] bw ( KiB/s): min= 7, max= 175, per=25.14%, avg=103.31, stdev=26.85, samples=114 iops : min= 1, max= 43, avg=25.34, stdev= 6.78, samples=114 write: IOPS=27, BW=111KiB/s (114kB/s)(6348KiB/57264msec); 0 zone resets clat (usec): min=911, max=546438, avg=16647.80, stdev=19112.75 lat (usec): min=912, max=546439, avg=16649.24, stdev=19112.71 clat percentiles (usec): | 1.00th=[ 1270], 5.00th=[ 2073], 10.00th=[ 2638], 20.00th=[ 3621], | 30.00th=[ 5800], 40.00th=[ 9896], 50.00th=[ 13435], 60.00th=[ 16909], | 70.00th=[ 21103], 80.00th=[ 27395], 90.00th=[ 34341], 95.00th=[ 42206], | 99.00th=[ 63701], 99.50th=[ 68682], 99.90th=[ 81265], 99.95th=[549454], | 99.99th=[549454] bw ( KiB/s): min= 7, max= 272, per=25.69%, avg=110.46, stdev=35.40, samples=114 iops : min= 1, max= 68, avg=27.13, stdev= 8.91, samples=114 lat (usec) : 20=0.03%, 50=0.16%, 100=0.81%, 250=0.62%, 500=0.03% lat (usec) : 1000=0.07% lat (msec) : 2=2.28%, 4=9.15%, 10=13.57%, 20=34.99%, 50=35.84% lat (msec) : 100=2.38%, 250=0.03%, 750=0.03% cpu : usr=0.12%, sys=19.19%, ctx=8294, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181546: Sat May 16 06:43:19 2026 read: IOPS=26, BW=104KiB/s (107kB/s)(6028KiB/57841msec) clat (usec): min=46, max=91610, avg=20215.56, stdev=11528.14 lat (usec): min=47, max=91611, avg=20216.80, stdev=11528.13 clat percentiles (usec): | 1.00th=[ 80], 5.00th=[ 7308], 10.00th=[ 9241], 20.00th=[11207], | 30.00th=[13435], 40.00th=[15401], 50.00th=[17957], 60.00th=[20841], | 70.00th=[24249], 80.00th=[28181], 90.00th=[34341], 95.00th=[40633], | 99.00th=[61080], 99.50th=[67634], 99.90th=[84411], 99.95th=[91751], | 99.99th=[91751] bw ( KiB/s): min= 31, max= 159, per=25.47%, avg=104.67, stdev=26.12, samples=114 iops : min= 7, max= 39, avg=25.68, stdev= 6.54, samples=114 write: IOPS=27, BW=108KiB/s (111kB/s)(6260KiB/57841msec); 0 zone resets clat (usec): min=990, max=563724, avg=17369.92, stdev=19599.98 lat (usec): min=991, max=563725, avg=17371.67, stdev=19600.61 clat percentiles (usec): | 1.00th=[ 1221], 5.00th=[ 1876], 10.00th=[ 2573], 20.00th=[ 3687], | 30.00th=[ 6783], 40.00th=[ 11207], 50.00th=[ 14353], 60.00th=[ 17433], | 70.00th=[ 21627], 80.00th=[ 27657], 90.00th=[ 35914], 95.00th=[ 44303], | 99.00th=[ 61604], 99.50th=[ 70779], 99.90th=[ 94897], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 47, max= 192, per=25.22%, avg=108.45, stdev=28.50, samples=114 iops : min= 11, max= 48, avg=26.63, stdev= 7.24, samples=114 lat (usec) : 50=0.07%, 100=0.75%, 250=0.81%, 500=0.10%, 1000=0.03% lat (msec) : 2=2.96%, 4=8.04%, 10=12.89%, 20=36.43%, 50=35.61% lat (msec) : 100=2.28%, 750=0.03% cpu : usr=0.13%, sys=18.92%, ctx=8163, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181548: Sat May 16 06:43:19 2026 read: IOPS=26, BW=105KiB/s (108kB/s)(6052KiB/57414msec) clat (usec): min=47, max=553568, avg=21064.68, stdev=17976.33 lat (usec): min=47, max=553569, avg=21065.75, stdev=17976.33 clat percentiles (usec): | 1.00th=[ 74], 5.00th=[ 7439], 10.00th=[ 9372], 20.00th=[ 11731], | 30.00th=[ 13829], 40.00th=[ 16188], 50.00th=[ 18744], 60.00th=[ 21365], | 70.00th=[ 24773], 80.00th=[ 28443], 90.00th=[ 34341], 95.00th=[ 41157], | 99.00th=[ 60556], 99.50th=[ 72877], 99.90th=[101188], 99.95th=[549454], | 99.99th=[549454] bw ( KiB/s): min= 47, max= 168, per=25.81%, avg=106.07, stdev=26.55, samples=113 iops : min= 11, max= 42, avg=26.04, stdev= 6.70, samples=113 write: IOPS=27, BW=109KiB/s (111kB/s)(6236KiB/57414msec); 0 zone resets clat (usec): min=760, max=87869, avg=16252.19, stdev=13927.26 lat (usec): min=760, max=87870, avg=16253.51, stdev=13927.45 clat percentiles (usec): | 1.00th=[ 1188], 5.00th=[ 1991], 10.00th=[ 2474], 20.00th=[ 3326], | 30.00th=[ 5080], 40.00th=[ 9503], 50.00th=[13304], 60.00th=[16909], | 70.00th=[21365], 80.00th=[27132], 90.00th=[35390], 95.00th=[43254], | 99.00th=[59507], 99.50th=[68682], 99.90th=[81265], 99.95th=[87557], | 99.99th=[87557] bw ( KiB/s): min= 30, max= 184, per=25.13%, avg=108.06, stdev=27.68, samples=114 iops : min= 7, max= 46, avg=26.54, stdev= 6.95, samples=114 lat (usec) : 50=0.10%, 100=0.75%, 250=0.81%, 500=0.10%, 1000=0.26% lat (msec) : 2=2.34%, 4=9.93%, 10=12.73%, 20=33.66%, 50=36.82% lat (msec) : 100=2.44%, 250=0.03%, 750=0.03% cpu : usr=0.12%, sys=18.70%, ctx=8211, 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=411KiB/s (421kB/s), 103KiB/s-105KiB/s (105kB/s-108kB/s), io=23.4MiB (24.6MB), run=57264-58404msec WRITE: bw=430KiB/s (441kB/s), 108KiB/s-111KiB/s (110kB/s-114kB/s), io=24.6MiB (25.7MB), run=57264-58404msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181542: Sat May 16 06:43:33 2026 read: IOPS=20, BW=82.9KiB/s (84.9kB/s)(5992KiB/72309msec) clat (msec): min=3, max=619, avg=19.93, stdev=23.09 lat (msec): min=3, max=619, avg=19.93, stdev=23.09 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 29], 90.00th=[ 45], 95.00th=[ 57], | 99.00th=[ 86], 99.50th=[ 96], 99.90th=[ 133], 99.95th=[ 617], | 99.99th=[ 617] bw ( KiB/s): min= 15, max= 256, per=25.22%, avg=83.74, stdev=54.02, samples=142 iops : min= 3, max= 64, avg=20.53, stdev=13.62, samples=142 write: IOPS=21, BW=87.1KiB/s (89.2kB/s)(6296KiB/72309msec); 0 zone resets clat (msec): min=6, max=149, avg=26.85, stdev=17.92 lat (msec): min=6, max=149, avg=26.86, stdev=17.92 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 41], 90.00th=[ 51], 95.00th=[ 61], | 99.00th=[ 88], 99.50th=[ 104], 99.90th=[ 131], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 31, max= 224, per=25.15%, avg=87.29, stdev=53.52, samples=143 iops : min= 7, max= 56, avg=21.41, stdev=13.49, samples=143 lat (msec) : 4=0.10%, 10=21.65%, 20=36.00%, 50=33.46%, 100=8.24% lat (msec) : 250=0.52%, 750=0.03% cpu : usr=0.11%, sys=9.06%, ctx=5718, 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=181545: Sat May 16 06:43:33 2026 read: IOPS=20, BW=82.7KiB/s (84.7kB/s)(5940KiB/71845msec) clat (msec): min=3, max=551, avg=19.36, stdev=21.27 lat (msec): min=3, max=551, avg=19.36, stdev=21.27 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 21], 80.00th=[ 28], 90.00th=[ 43], 95.00th=[ 55], | 99.00th=[ 80], 99.50th=[ 86], 99.90th=[ 125], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 15, max= 256, per=24.98%, avg=82.94, stdev=55.22, samples=142 iops : min= 3, max= 64, avg=20.33, stdev=13.92, samples=142 write: IOPS=22, BW=88.4KiB/s (90.5kB/s)(6348KiB/71845msec); 0 zone resets clat (msec): min=6, max=137, avg=27.04, stdev=18.06 lat (msec): min=6, max=137, avg=27.04, stdev=18.06 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 33], 80.00th=[ 41], 90.00th=[ 51], 95.00th=[ 62], | 99.00th=[ 91], 99.50th=[ 104], 99.90th=[ 138], 99.95th=[ 138], | 99.99th=[ 138] bw ( KiB/s): min= 31, max= 248, per=25.51%, avg=88.53, stdev=52.03, samples=142 iops : min= 7, max= 62, avg=21.73, stdev=13.13, samples=142 lat (msec) : 4=0.07%, 10=20.74%, 20=37.17%, 50=33.17%, 100=8.43% lat (msec) : 250=0.39%, 750=0.03% cpu : usr=0.13%, sys=9.05%, ctx=5663, 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=181547: Sat May 16 06:43:33 2026 read: IOPS=20, BW=83.8KiB/s (85.8kB/s)(6028KiB/71920msec) clat (msec): min=3, max=110, avg=19.53, stdev=16.27 lat (msec): min=3, max=110, avg=19.53, stdev=16.27 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 12], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 22], 80.00th=[ 29], 90.00th=[ 43], 95.00th=[ 55], | 99.00th=[ 78], 99.50th=[ 87], 99.90th=[ 105], 99.95th=[ 111], | 99.99th=[ 111] bw ( KiB/s): min= 23, max= 272, per=25.27%, avg=83.90, stdev=53.33, samples=142 iops : min= 5, max= 68, avg=20.57, stdev=13.47, samples=142 write: IOPS=21, BW=87.0KiB/s (89.1kB/s)(6260KiB/71920msec); 0 zone resets clat (msec): min=5, max=557, avg=27.03, stdev=22.69 lat (msec): min=5, max=557, avg=27.03, stdev=22.69 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 17], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 32], 80.00th=[ 41], 90.00th=[ 51], 95.00th=[ 62], | 99.00th=[ 94], 99.50th=[ 109], 99.90th=[ 157], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 23, max= 248, per=25.09%, avg=87.06, stdev=54.04, samples=142 iops : min= 5, max= 62, avg=21.36, stdev=13.64, samples=142 lat (msec) : 4=0.03%, 10=20.70%, 20=37.83%, 50=32.78%, 100=8.20% lat (msec) : 250=0.42%, 750=0.03% cpu : usr=0.12%, sys=8.98%, ctx=5613, 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=181549: Sat May 16 06:43:33 2026 read: IOPS=20, BW=83.9KiB/s (85.9kB/s)(6052KiB/72118msec) clat (msec): min=3, max=106, avg=18.88, stdev=15.05 lat (msec): min=3, max=106, avg=18.88, stdev=15.05 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 8], | 30.00th=[ 9], 40.00th=[ 11], 50.00th=[ 14], 60.00th=[ 17], | 70.00th=[ 22], 80.00th=[ 29], 90.00th=[ 41], 95.00th=[ 51], | 99.00th=[ 73], 99.50th=[ 79], 99.90th=[ 92], 99.95th=[ 107], | 99.99th=[ 107] bw ( KiB/s): min= 7, max= 304, per=25.17%, avg=83.56, stdev=53.01, samples=142 iops : min= 1, max= 76, avg=20.49, stdev=13.38, samples=142 write: IOPS=21, BW=86.5KiB/s (88.5kB/s)(6236KiB/72118msec); 0 zone resets clat (msec): min=6, max=563, avg=27.82, stdev=22.94 lat (msec): min=6, max=563, avg=27.82, stdev=22.94 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 42], 90.00th=[ 52], 95.00th=[ 63], | 99.00th=[ 93], 99.50th=[ 108], 99.90th=[ 153], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 24, max= 232, per=24.90%, avg=86.39, stdev=51.79, samples=142 iops : min= 6, max= 58, avg=21.19, stdev=13.07, samples=142 lat (msec) : 4=0.20%, 10=20.18%, 20=36.75%, 50=34.67%, 100=7.71% lat (msec) : 250=0.46%, 750=0.03% cpu : usr=0.11%, sys=9.16%, ctx=5771, 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=332KiB/s (340kB/s), 82.7KiB/s-83.9KiB/s (84.7kB/s-85.9kB/s), io=23.4MiB (24.6MB), run=71845-72309msec WRITE: bw=348KiB/s (356kB/s), 86.5KiB/s-88.4KiB/s (88.5kB/s-90.5kB/s), io=24.6MiB (25.7MB), run=71845-72309msec 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=181573: Sat May 16 06:43:56 2026 read: IOPS=23, BW=370KiB/s (378kB/s)(5920KiB/16018msec) clat (usec): min=40, max=89627, avg=22296.97, stdev=13018.73 lat (usec): min=40, max=89627, avg=22297.88, stdev=13018.75 clat percentiles (usec): | 1.00th=[ 57], 5.00th=[ 108], 10.00th=[ 9110], 20.00th=[13566], | 30.00th=[15270], 40.00th=[18220], 50.00th=[20841], 60.00th=[22938], | 70.00th=[26346], 80.00th=[31065], 90.00th=[38011], 95.00th=[45876], | 99.00th=[65799], 99.50th=[72877], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 159, max= 576, per=25.48%, avg=364.13, stdev=98.88, samples=31 iops : min= 9, max= 36, avg=22.23, stdev= 6.21, samples=31 write: IOPS=24, BW=398KiB/s (407kB/s)(6368KiB/16018msec); 0 zone resets clat (usec): min=1765, max=86421, avg=19382.65, stdev=16003.63 lat (usec): min=1768, max=86423, avg=19384.52, stdev=16003.70 clat percentiles (usec): | 1.00th=[ 2040], 5.00th=[ 3163], 10.00th=[ 4015], 20.00th=[ 5669], | 30.00th=[ 8717], 40.00th=[11863], 50.00th=[15139], 60.00th=[18482], | 70.00th=[23725], 80.00th=[30016], 90.00th=[41681], 95.00th=[52691], | 99.00th=[76022], 99.50th=[77071], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 223, max= 638, per=26.36%, avg=396.42, stdev=94.11, samples=31 iops : min= 13, max= 39, avg=24.23, stdev= 5.93, samples=31 lat (usec) : 50=0.26%, 100=1.82%, 250=1.43%, 500=0.13%, 1000=0.13% lat (msec) : 2=0.39%, 4=4.82%, 10=14.06%, 20=32.68%, 50=39.84% lat (msec) : 100=4.43% cpu : usr=0.13%, sys=21.83%, ctx=2315, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=370,398,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181575: Sat May 16 06:43:56 2026 read: IOPS=21, BW=343KiB/s (351kB/s)(5744KiB/16751msec) clat (usec): min=64, max=95856, avg=23573.56, stdev=14658.73 lat (usec): min=65, max=95857, avg=23574.84, stdev=14659.05 clat percentiles (usec): | 1.00th=[ 68], 5.00th=[ 161], 10.00th=[ 9372], 20.00th=[13698], | 30.00th=[16188], 40.00th=[18482], 50.00th=[20579], 60.00th=[23987], | 70.00th=[27132], 80.00th=[32637], 90.00th=[41681], 95.00th=[48497], | 99.00th=[74974], 99.50th=[92799], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 127, max= 512, per=23.85%, avg=340.79, stdev=111.73, samples=33 iops : min= 7, max= 32, avg=20.76, stdev= 7.09, samples=33 write: IOPS=24, BW=391KiB/s (400kB/s)(6544KiB/16751msec); 0 zone resets clat (usec): min=1613, max=85283, avg=19948.86, stdev=15002.90 lat (usec): min=1615, max=85285, avg=19958.70, stdev=15024.15 clat percentiles (usec): | 1.00th=[ 1762], 5.00th=[ 3163], 10.00th=[ 3949], 20.00th=[ 6259], | 30.00th=[ 9503], 40.00th=[12649], 50.00th=[16319], 60.00th=[20579], | 70.00th=[25560], 80.00th=[31065], 90.00th=[41157], 95.00th=[49546], | 99.00th=[59507], 99.50th=[73925], 99.90th=[85459], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 254, max= 670, per=25.77%, avg=387.61, stdev=109.35, samples=33 iops : min= 15, max= 41, avg=23.70, stdev= 6.80, samples=33 lat (usec) : 100=1.30%, 250=1.43%, 500=0.13% lat (msec) : 2=0.78%, 4=4.56%, 10=13.54%, 20=31.12%, 50=42.45% lat (msec) : 100=4.69% cpu : usr=0.11%, sys=21.14%, ctx=2363, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181577: Sat May 16 06:43:56 2026 read: IOPS=23, BW=384KiB/s (393kB/s)(6256KiB/16306msec) clat (usec): min=47, max=79173, avg=22866.36, stdev=12457.43 lat (usec): min=48, max=79174, avg=22867.35, stdev=12457.44 clat percentiles (usec): | 1.00th=[ 59], 5.00th=[ 126], 10.00th=[10028], 20.00th=[13566], | 30.00th=[16188], 40.00th=[18482], 50.00th=[21890], 60.00th=[24773], | 70.00th=[28181], 80.00th=[31065], 90.00th=[37487], 95.00th=[44827], | 99.00th=[69731], 99.50th=[73925], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 223, max= 672, per=26.92%, avg=384.69, stdev=104.32, samples=32 iops : min= 13, max= 42, avg=23.50, stdev= 6.56, samples=32 write: IOPS=23, BW=370KiB/s (379kB/s)(6032KiB/16306msec); 0 zone resets clat (usec): min=1398, max=80003, avg=19218.25, stdev=14047.18 lat (usec): min=1399, max=80007, avg=19220.33, stdev=14047.35 clat percentiles (usec): | 1.00th=[ 1942], 5.00th=[ 3326], 10.00th=[ 4293], 20.00th=[ 6128], | 30.00th=[10028], 40.00th=[12387], 50.00th=[16188], 60.00th=[19792], | 70.00th=[25035], 80.00th=[28705], 90.00th=[40109], 95.00th=[46400], | 99.00th=[62129], 99.50th=[76022], 99.90th=[80217], 99.95th=[80217], | 99.99th=[80217] bw ( KiB/s): min= 160, max= 576, per=24.26%, avg=364.81, stdev=97.29, samples=32 iops : min= 10, max= 36, avg=22.28, stdev= 6.15, samples=32 lat (usec) : 50=0.13%, 100=1.17%, 250=2.08%, 500=0.13%, 1000=0.13% lat (msec) : 2=0.52%, 4=3.52%, 10=11.98%, 20=32.68%, 50=44.53% lat (msec) : 100=3.12% cpu : usr=0.10%, sys=21.57%, ctx=2506, 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=181579: Sat May 16 06:43:56 2026 read: IOPS=23, BW=379KiB/s (388kB/s)(6032KiB/15928msec) clat (usec): min=47, max=90069, avg=22059.57, stdev=12412.07 lat (usec): min=48, max=90071, avg=22062.75, stdev=12411.48 clat percentiles (usec): | 1.00th=[ 63], 5.00th=[ 121], 10.00th=[ 9896], 20.00th=[13566], | 30.00th=[15664], 40.00th=[18220], 50.00th=[20317], 60.00th=[23200], | 70.00th=[25822], 80.00th=[29492], 90.00th=[36963], 95.00th=[43254], | 99.00th=[68682], 99.50th=[79168], 99.90th=[89654], 99.95th=[89654], | 99.99th=[89654] bw ( KiB/s): min= 224, max= 574, per=26.50%, avg=378.71, stdev=88.49, samples=31 iops : min= 14, max= 35, avg=23.13, stdev= 5.55, samples=31 write: IOPS=24, BW=393KiB/s (402kB/s)(6256KiB/15928msec); 0 zone resets clat (usec): min=1405, max=70046, avg=19209.74, stdev=14681.46 lat (usec): min=1406, max=70047, avg=19211.98, stdev=14682.01 clat percentiles (usec): | 1.00th=[ 1778], 5.00th=[ 3261], 10.00th=[ 4047], 20.00th=[ 5407], | 30.00th=[ 8029], 40.00th=[11469], 50.00th=[15008], 60.00th=[19006], | 70.00th=[26084], 80.00th=[32637], 90.00th=[40109], 95.00th=[47973], | 99.00th=[58983], 99.50th=[67634], 99.90th=[69731], 99.95th=[69731], | 99.99th=[69731] bw ( KiB/s): min= 222, max= 764, per=26.12%, avg=392.87, stdev=122.00, samples=31 iops : min= 13, max= 47, avg=24.03, stdev= 7.69, samples=31 lat (usec) : 50=0.13%, 100=1.43%, 250=1.56%, 500=0.39% lat (msec) : 2=0.52%, 4=4.43%, 10=14.58%, 20=31.90%, 50=42.06% lat (msec) : 100=2.99% cpu : usr=0.08%, sys=21.86%, ctx=2347, 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=1430KiB/s (1464kB/s), 343KiB/s-384KiB/s (351kB/s-393kB/s), io=23.4MiB (24.5MB), run=15928-16751msec WRITE: bw=1504KiB/s (1540kB/s), 370KiB/s-398KiB/s (379kB/s-407kB/s), io=24.6MiB (25.8MB), run=15928-16751msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181574: Sat May 16 06:43:59 2026 read: IOPS=18, BW=302KiB/s (309kB/s)(5920KiB/19608msec) clat (usec): min=5213, max=90689, avg=20586.28, stdev=15960.40 lat (usec): min=5214, max=90690, avg=20587.34, stdev=15960.40 clat percentiles (usec): | 1.00th=[ 5473], 5.00th=[ 6652], 10.00th=[ 7242], 20.00th=[ 8455], | 30.00th=[ 9765], 40.00th=[11863], 50.00th=[15270], 60.00th=[17957], | 70.00th=[22938], 80.00th=[29230], 90.00th=[44303], 95.00th=[51119], | 99.00th=[78119], 99.50th=[81265], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 96, max= 830, per=23.83%, avg=290.50, stdev=183.14, samples=38 iops : min= 6, max= 51, avg=17.58, stdev=11.44, samples=38 write: IOPS=20, BW=325KiB/s (333kB/s)(6368KiB/19608msec); 0 zone resets clat (msec): min=7, max=112, avg=29.88, stdev=18.86 lat (msec): min=7, max=112, avg=29.89, stdev=18.86 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 37], 80.00th=[ 44], 90.00th=[ 56], 95.00th=[ 68], | 99.00th=[ 90], 99.50th=[ 96], 99.90th=[ 113], 99.95th=[ 113], | 99.99th=[ 113] bw ( KiB/s): min= 159, max= 894, per=24.29%, avg=311.66, stdev=167.57, samples=38 iops : min= 9, max= 55, avg=18.92, stdev=10.43, samples=38 lat (msec) : 10=17.45%, 20=33.33%, 50=38.80%, 100=10.29%, 250=0.13% cpu : usr=0.09%, sys=9.61%, ctx=1466, 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=181576: Sat May 16 06:43:59 2026 read: IOPS=18, BW=294KiB/s (301kB/s)(5744KiB/19522msec) clat (msec): min=4, max=102, avg=21.29, stdev=17.23 lat (msec): min=4, max=102, avg=21.29, stdev=17.23 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 9], | 30.00th=[ 11], 40.00th=[ 13], 50.00th=[ 16], 60.00th=[ 19], | 70.00th=[ 24], 80.00th=[ 31], 90.00th=[ 47], 95.00th=[ 58], | 99.00th=[ 88], 99.50th=[ 90], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 126, max= 798, per=23.71%, avg=289.00, stdev=169.73, samples=38 iops : min= 7, max= 49, avg=17.50, stdev=10.52, samples=38 write: IOPS=20, BW=335KiB/s (343kB/s)(6544KiB/19522msec); 0 zone resets clat (msec): min=7, max=116, avg=28.97, stdev=19.06 lat (msec): min=7, max=116, avg=28.98, stdev=19.06 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 19], 50.00th=[ 24], 60.00th=[ 28], | 70.00th=[ 33], 80.00th=[ 43], 90.00th=[ 56], 95.00th=[ 66], | 99.00th=[ 93], 99.50th=[ 106], 99.90th=[ 116], 99.95th=[ 116], | 99.99th=[ 116] bw ( KiB/s): min= 128, max= 894, per=25.19%, avg=323.18, stdev=180.71, samples=38 iops : min= 8, max= 55, avg=19.63, stdev=11.27, samples=38 lat (msec) : 10=14.45%, 20=38.54%, 50=35.68%, 100=10.81%, 250=0.52% cpu : usr=0.13%, sys=9.82%, ctx=1474, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181578: Sat May 16 06:43:59 2026 read: IOPS=19, BW=319KiB/s (326kB/s)(6256KiB/19635msec) clat (usec): min=4499, max=83639, avg=21441.34, stdev=16660.19 lat (usec): min=4500, max=83640, avg=21442.76, stdev=16659.97 clat percentiles (usec): | 1.00th=[ 5014], 5.00th=[ 6128], 10.00th=[ 6915], 20.00th=[ 8291], | 30.00th=[ 9896], 40.00th=[12780], 50.00th=[15533], 60.00th=[18220], | 70.00th=[25560], 80.00th=[32375], 90.00th=[46924], 95.00th=[58459], | 99.00th=[76022], 99.50th=[82314], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 126, max= 1053, per=26.19%, avg=319.26, stdev=206.90, samples=39 iops : min= 7, max= 65, avg=19.36, stdev=12.91, samples=39 write: IOPS=19, BW=307KiB/s (315kB/s)(6032KiB/19635msec); 0 zone resets clat (msec): min=7, max=102, avg=29.51, stdev=19.04 lat (msec): min=7, max=102, avg=29.51, stdev=19.04 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 12], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 45], 90.00th=[ 59], 95.00th=[ 67], | 99.00th=[ 91], 99.50th=[ 94], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 63, max= 830, per=23.79%, avg=305.21, stdev=183.78, samples=39 iops : min= 3, max= 51, avg=18.49, stdev=11.49, samples=39 lat (msec) : 10=17.71%, 20=34.51%, 50=35.94%, 100=11.72%, 250=0.13% cpu : usr=0.16%, sys=9.52%, ctx=1394, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181580: Sat May 16 06:43:59 2026 read: IOPS=19, BW=310KiB/s (317kB/s)(6032KiB/19457msec) clat (usec): min=4911, max=83445, avg=20330.27, stdev=15299.56 lat (usec): min=4912, max=83446, avg=20331.59, stdev=15299.58 clat percentiles (usec): | 1.00th=[ 5145], 5.00th=[ 6194], 10.00th=[ 6849], 20.00th=[ 8356], | 30.00th=[10290], 40.00th=[12125], 50.00th=[15401], 60.00th=[18744], | 70.00th=[22676], 80.00th=[28705], 90.00th=[43779], 95.00th=[54264], | 99.00th=[77071], 99.50th=[79168], 99.90th=[83362], 99.95th=[83362], | 99.99th=[83362] bw ( KiB/s): min= 126, max= 830, per=24.60%, avg=299.89, stdev=175.19, samples=38 iops : min= 7, max= 51, avg=18.16, stdev=10.96, samples=38 write: IOPS=20, BW=322KiB/s (329kB/s)(6256KiB/19457msec); 0 zone resets clat (usec): min=8000, max=96059, avg=29888.74, stdev=18412.70 lat (usec): min=8002, max=96061, avg=29890.94, stdev=18412.66 clat percentiles (usec): | 1.00th=[ 8717], 5.00th=[10552], 10.00th=[11994], 20.00th=[13698], | 30.00th=[16909], 40.00th=[21103], 50.00th=[24249], 60.00th=[29230], | 70.00th=[36439], 80.00th=[43254], 90.00th=[54789], 95.00th=[66847], | 99.00th=[93848], 99.50th=[95945], 99.90th=[95945], 99.95th=[95945], | 99.99th=[95945] bw ( KiB/s): min= 96, max= 798, per=24.48%, avg=314.08, stdev=169.53, samples=38 iops : min= 6, max= 49, avg=19.05, stdev=10.58, samples=38 lat (msec) : 10=16.02%, 20=34.77%, 50=38.28%, 100=10.94% cpu : usr=0.10%, sys=9.90%, ctx=1517, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1220KiB/s (1249kB/s), 294KiB/s-319KiB/s (301kB/s-326kB/s), io=23.4MiB (24.5MB), run=19457-19635msec WRITE: bw=1283KiB/s (1314kB/s), 307KiB/s-335KiB/s (315kB/s-343kB/s), io=24.6MiB (25.8MB), run=19457-19635msec 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=181588: Sat May 16 06:44:07 2026 read: IOPS=3, BW=3962KiB/s (4058kB/s)(7168KiB/1809msec) clat (msec): min=71, max=220, avg=127.67, stdev=61.38 lat (msec): min=71, max=220, avg=127.67, stdev=61.38 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 74], | 30.00th=[ 80], 40.00th=[ 80], 50.00th=[ 110], 60.00th=[ 140], | 70.00th=[ 140], 80.00th=[ 201], 90.00th=[ 220], 95.00th=[ 220], | 99.00th=[ 220], 99.50th=[ 220], 99.90th=[ 220], 99.95th=[ 220], | 99.99th=[ 220] bw ( KiB/s): min= 2048, max= 5278, per=53.04%, avg=3807.33, stdev=1634.23, samples=3 iops : min= 2, max= 5, avg= 3.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2830KiB/s (2898kB/s)(5120KiB/1809msec); 0 zone resets clat (msec): min=65, max=294, avg=177.64, stdev=97.18 lat (msec): min=65, max=294, avg=177.71, stdev=97.18 clat percentiles (msec): | 1.00th=[ 66], 5.00th=[ 66], 10.00th=[ 66], 20.00th=[ 66], | 30.00th=[ 92], 40.00th=[ 92], 50.00th=[ 201], 60.00th=[ 201], | 70.00th=[ 239], 80.00th=[ 239], 90.00th=[ 296], 95.00th=[ 296], | 99.00th=[ 296], 99.50th=[ 296], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 4096, max= 4096, per=40.76%, avg=4096.00, stdev= 0.00, samples=2 iops : min= 4, max= 4, avg= 4.00, stdev= 0.00, samples=2 lat (msec) : 100=41.67%, 250=50.00%, 500=8.33% cpu : usr=0.11%, sys=16.59%, ctx=76, 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=181589: Sat May 16 06:44:07 2026 read: IOPS=0, BW=755KiB/s (774kB/s)(2048KiB/2711msec) clat (msec): min=72, max=171, avg=121.63, stdev=70.14 lat (msec): min=72, max=171, avg=121.63, stdev=70.14 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 72], | 30.00th=[ 72], 40.00th=[ 72], 50.00th=[ 72], 60.00th=[ 171], | 70.00th=[ 171], 80.00th=[ 171], 90.00th=[ 171], 95.00th=[ 171], | 99.00th=[ 171], 99.50th=[ 171], 99.90th=[ 171], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 1780, max= 2048, per=26.66%, avg=1914.00, stdev=189.50, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3777KiB/s (3868kB/s)(10.0MiB/2711msec); 0 zone resets clat (msec): min=108, max=399, avg=242.54, stdev=93.32 lat (msec): min=108, max=399, avg=242.64, stdev=93.32 clat percentiles (msec): | 1.00th=[ 109], 5.00th=[ 109], 10.00th=[ 109], 20.00th=[ 153], | 30.00th=[ 169], 40.00th=[ 218], 50.00th=[ 220], 60.00th=[ 239], | 70.00th=[ 243], 80.00th=[ 309], 90.00th=[ 372], 95.00th=[ 401], | 99.00th=[ 401], 99.50th=[ 401], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 1780, max= 4096, per=35.53%, avg=3570.20, stdev=1005.54, samples=5 iops : min= 1, max= 4, avg= 3.00, stdev= 1.22, samples=5 lat (msec) : 100=8.33%, 250=66.67%, 500=25.00% cpu : usr=0.04%, sys=22.21%, ctx=113, 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=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=181590: Sat May 16 06:44:07 2026 read: IOPS=2, BW=2154KiB/s (2205kB/s)(6144KiB/2853msec) clat (msec): min=46, max=569, avg=297.52, stdev=250.57 lat (msec): min=46, max=569, avg=297.52, stdev=250.57 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 47], 10.00th=[ 47], 20.00th=[ 71], | 30.00th=[ 71], 40.00th=[ 94], 50.00th=[ 94], 60.00th=[ 489], | 70.00th=[ 514], 80.00th=[ 514], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] bw ( KiB/s): min= 1928, max= 2048, per=27.98%, avg=2008.75, stdev=56.59, samples=4 iops : min= 1, max= 2, avg= 1.50, stdev= 0.58, samples=4 write: IOPS=2, BW=2154KiB/s (2205kB/s)(6144KiB/2853msec); 0 zone resets clat (msec): min=71, max=288, avg=156.59, stdev=75.98 lat (msec): min=71, max=288, avg=156.66, stdev=75.99 clat percentiles (msec): | 1.00th=[ 72], 5.00th=[ 72], 10.00th=[ 72], 20.00th=[ 110], | 30.00th=[ 110], 40.00th=[ 123], 50.00th=[ 123], 60.00th=[ 163], | 70.00th=[ 184], 80.00th=[ 184], 90.00th=[ 288], 95.00th=[ 288], | 99.00th=[ 288], 99.50th=[ 288], 99.90th=[ 288], 99.95th=[ 288], | 99.99th=[ 288] bw ( KiB/s): min= 1762, max= 4096, per=26.22%, avg=2635.33, stdev=1273.03, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 50=8.33%, 100=25.00%, 250=33.33%, 500=16.67%, 750=16.67% cpu : usr=0.00%, sys=13.53%, ctx=107, 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=181591: Sat May 16 06:44:07 2026 read: IOPS=1, BW=2021KiB/s (2070kB/s)(5120KiB/2533msec) clat (msec): min=64, max=235, avg=126.91, stdev=66.56 lat (msec): min=64, max=235, avg=126.91, stdev=66.56 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 65], 10.00th=[ 65], 20.00th=[ 65], | 30.00th=[ 82], 40.00th=[ 82], 50.00th=[ 123], 60.00th=[ 123], | 70.00th=[ 132], 80.00th=[ 132], 90.00th=[ 236], 95.00th=[ 236], | 99.00th=[ 236], 99.50th=[ 236], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 7713, max= 7713, per=100.00%, avg=7713.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2830KiB/s (2898kB/s)(7168KiB/2533msec); 0 zone resets clat (msec): min=80, max=387, avg=248.15, stdev=105.64 lat (msec): min=80, max=387, avg=248.24, stdev=105.63 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 184], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 234], 60.00th=[ 309], | 70.00th=[ 309], 80.00th=[ 342], 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= 1747, max= 4096, per=26.18%, avg=2630.33, stdev=1278.20, samples=3 iops : min= 1, max= 4, avg= 2.33, stdev= 1.53, samples=3 lat (msec) : 100=25.00%, 250=50.00%, 500=25.00% cpu : usr=0.04%, sys=16.43%, ctx=101, 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=7178KiB/s (7351kB/s), 755KiB/s-3962KiB/s (774kB/s-4058kB/s), io=20.0MiB (20.0MB), run=1809-2853msec WRITE: bw=9.81MiB/s (10.3MB/s), 2154KiB/s-3777KiB/s (2205kB/s-3868kB/s), io=28.0MiB (29.4MB), run=1809-2853msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181592: Sat May 16 06:44:07 2026 read: IOPS=3, BW=3443KiB/s (3525kB/s)(7168KiB/2082msec) clat (usec): min=590, max=189118, avg=98887.34, stdev=74361.04 lat (usec): min=592, max=189122, avg=98889.04, stdev=74361.42 clat percentiles (usec): | 1.00th=[ 594], 5.00th=[ 594], 10.00th=[ 594], 20.00th=[ 611], | 30.00th=[ 92799], 40.00th=[ 92799], 50.00th=[116917], 60.00th=[125305], | 70.00th=[125305], 80.00th=[166724], 90.00th=[189793], 95.00th=[189793], | 99.00th=[189793], 99.50th=[189793], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 4063, max= 5206, per=63.80%, avg=4634.50, stdev=808.22, samples=2 iops : min= 3, max= 5, avg= 4.00, stdev= 1.41, samples=2 write: IOPS=2, BW=2459KiB/s (2518kB/s)(5120KiB/2082msec); 0 zone resets clat (msec): min=134, max=483, avg=241.56, stdev=140.19 lat (msec): min=134, max=483, avg=241.62, stdev=140.18 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 136], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 190], 60.00th=[ 190], | 70.00th=[ 234], 80.00th=[ 234], 90.00th=[ 485], 95.00th=[ 485], | 99.00th=[ 485], 99.50th=[ 485], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 2031, max= 2048, per=20.05%, avg=2039.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (usec) : 750=16.67% lat (msec) : 100=8.33%, 250=66.67%, 500=8.33% cpu : usr=0.00%, sys=45.31%, ctx=631, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181593: Sat May 16 06:44:07 2026 read: IOPS=0, BW=726KiB/s (744kB/s)(2048KiB/2819msec) clat (msec): min=144, max=185, avg=165.01, stdev=29.61 lat (msec): min=144, max=185, avg=165.01, stdev=29.61 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 144], 60.00th=[ 186], | 70.00th=[ 186], 80.00th=[ 186], 90.00th=[ 186], 95.00th=[ 186], | 99.00th=[ 186], 99.50th=[ 186], 99.90th=[ 186], 99.95th=[ 186], | 99.99th=[ 186] bw ( KiB/s): min= 1706, max= 2048, per=25.84%, avg=1877.00, stdev=241.83, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 write: IOPS=3, BW=3632KiB/s (3720kB/s)(10.0MiB/2819msec); 0 zone resets clat (msec): min=76, max=395, avg=246.30, stdev=89.83 lat (msec): min=76, max=395, avg=246.38, stdev=89.83 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 78], 10.00th=[ 78], 20.00th=[ 167], | 30.00th=[ 197], 40.00th=[ 220], 50.00th=[ 228], 60.00th=[ 271], | 70.00th=[ 275], 80.00th=[ 317], 90.00th=[ 321], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 1706, max= 4096, per=31.29%, avg=3182.60, stdev=1198.46, samples=5 iops : min= 1, max= 4, avg= 2.60, stdev= 1.14, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=41.67% cpu : usr=0.07%, sys=42.30%, ctx=448, 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=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=181594: Sat May 16 06:44:07 2026 read: IOPS=2, BW=2671KiB/s (2735kB/s)(6144KiB/2300msec) clat (usec): min=855, max=161475, avg=88908.90, stdev=64612.31 lat (usec): min=857, max=161477, avg=88910.33, stdev=64612.36 clat percentiles (usec): | 1.00th=[ 857], 5.00th=[ 857], 10.00th=[ 857], 20.00th=[ 38536], | 30.00th=[ 38536], 40.00th=[ 64226], 50.00th=[ 64226], 60.00th=[115868], | 70.00th=[152044], 80.00th=[152044], 90.00th=[160433], 95.00th=[160433], | 99.00th=[160433], 99.50th=[160433], 99.90th=[160433], 99.95th=[160433], | 99.99th=[160433] bw ( KiB/s): min= 2048, max= 4096, per=46.84%, avg=3402.33, stdev=1173.00, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=2, BW=2671KiB/s (2735kB/s)(6144KiB/2300msec); 0 zone resets clat (msec): min=153, max=368, avg=263.05, stdev=69.95 lat (msec): min=153, max=368, avg=263.11, stdev=69.96 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 239], | 30.00th=[ 239], 40.00th=[ 264], 50.00th=[ 264], 60.00th=[ 271], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 1732, max= 4063, per=24.31%, avg=2472.75, stdev=1070.58, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 0.82, samples=4 lat (usec) : 1000=8.33% lat (msec) : 50=8.33%, 100=8.33%, 250=41.67%, 500=33.33% cpu : usr=0.00%, sys=41.10%, ctx=468, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181595: Sat May 16 06:44:07 2026 read: IOPS=1, BW=1970KiB/s (2017kB/s)(5120KiB/2599msec) clat (usec): min=524, max=163757, avg=64115.08, stdev=71039.41 lat (usec): min=525, max=163758, avg=64116.13, stdev=71039.27 clat percentiles (usec): | 1.00th=[ 523], 5.00th=[ 523], 10.00th=[ 523], 20.00th=[ 523], | 30.00th=[ 586], 40.00th=[ 586], 50.00th=[ 47973], 60.00th=[ 47973], | 70.00th=[107480], 80.00th=[107480], 90.00th=[164627], 95.00th=[164627], | 99.00th=[164627], 99.50th=[164627], 99.90th=[164627], 99.95th=[164627], | 99.99th=[164627] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 8, max= 8, avg= 8.00, stdev= 0.00, samples=1 write: IOPS=2, BW=2758KiB/s (2824kB/s)(7168KiB/2599msec); 0 zone resets clat (msec): min=132, max=511, avg=296.49, stdev=144.62 lat (msec): min=132, max=511, avg=296.54, stdev=144.61 clat percentiles (msec): | 1.00th=[ 132], 5.00th=[ 132], 10.00th=[ 132], 20.00th=[ 150], | 30.00th=[ 207], 40.00th=[ 207], 50.00th=[ 279], 60.00th=[ 372], | 70.00th=[ 372], 80.00th=[ 426], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 2048, max= 4063, per=26.74%, avg=2719.67, stdev=1163.36, samples=3 iops : min= 2, max= 3, avg= 2.33, stdev= 0.58, samples=3 lat (usec) : 750=16.67% lat (msec) : 50=8.33%, 250=41.67%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=33.80%, ctx=504, 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=7265KiB/s (7439kB/s), 726KiB/s-3443KiB/s (744kB/s-3525kB/s), io=20.0MiB (20.0MB), run=2082-2819msec WRITE: bw=9.93MiB/s (10.4MB/s), 2459KiB/s-3632KiB/s (2518kB/s-3720kB/s), io=28.0MiB (29.4MB), run=2082-2819msec 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=181604: Sat May 16 06:44:16 2026 read: IOPS=1, BW=6536KiB/s (6693kB/s)(12.0MiB/1880msec) clat (msec): min=544, max=694, avg=603.99, stdev=79.92 lat (msec): min=544, max=694, avg=603.99, stdev=79.92 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 575], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 693], 95.00th=[ 693], | 99.00th=[ 693], 99.50th=[ 693], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 8047, max= 8192, per=100.00%, avg=8119.50, stdev=102.53, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=41.19%, ctx=2609, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181606: Sat May 16 06:44:16 2026 read: IOPS=0, BW=2020KiB/s (2068kB/s)(4096KiB/2028msec) clat (nsec): min=702512k, max=702512k, avg=702512041.00, stdev= 0.00 lat (nsec): min=702515k, max=702515k, avg=702515081.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 701], 5.00th=[ 701], 10.00th=[ 701], 20.00th=[ 701], | 30.00th=[ 701], 40.00th=[ 701], 50.00th=[ 701], 60.00th=[ 701], | 70.00th=[ 701], 80.00th=[ 701], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 8047, max= 8047, per=99.62%, avg=8047.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=4039KiB/s (4136kB/s)(8192KiB/2028msec); 0 zone resets clat (msec): min=471, max=799, avg=635.39, stdev=231.88 lat (msec): min=472, max=799, avg=635.88, stdev=231.66 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 472], 10.00th=[ 472], 20.00th=[ 472], | 30.00th=[ 472], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 802], | 70.00th=[ 802], 80.00th=[ 802], 90.00th=[ 802], 95.00th=[ 802], | 99.00th=[ 802], 99.50th=[ 802], 99.90th=[ 802], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 8192, max= 8192, per=59.90%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=26.20%, ctx=796, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181608: Sat May 16 06:44:16 2026 write: IOPS=1, BW=5129KiB/s (5252kB/s)(12.0MiB/2396msec); 0 zone resets clat (msec): min=190, max=1172, avg=733.77, stdev=499.43 lat (msec): min=190, max=1173, avg=734.21, stdev=499.54 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 1167], 80.00th=[ 1167], 90.00th=[ 1167], 95.00th=[ 1167], | 99.00th=[ 1167], 99.50th=[ 1167], 99.90th=[ 1167], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 8192, max= 8192, per=59.90%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=19.79%, ctx=97, 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=181609: Sat May 16 06:44:16 2026 write: IOPS=1, BW=5650KiB/s (5785kB/s)(12.0MiB/2175msec); 0 zone resets clat (msec): min=224, max=1477, avg=699.31, stdev=679.44 lat (msec): min=225, max=1478, avg=699.66, stdev=679.47 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 226], 10.00th=[ 226], 20.00th=[ 226], | 30.00th=[ 226], 40.00th=[ 397], 50.00th=[ 397], 60.00th=[ 397], | 70.00th=[ 1485], 80.00th=[ 1485], 90.00th=[ 1485], 95.00th=[ 1485], | 99.00th=[ 1485], 99.50th=[ 1485], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 6168, max= 8047, per=51.97%, avg=7107.50, stdev=1328.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.00%, sys=16.56%, ctx=106, 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=8079KiB/s (8273kB/s), 2020KiB/s-6536KiB/s (2068kB/s-6693kB/s), io=16.0MiB (16.8MB), run=1880-2028msec WRITE: bw=13.4MiB/s (14.0MB/s), 4039KiB/s-5650KiB/s (4136kB/s-5785kB/s), io=32.0MiB (33.6MB), run=2028-2396msec rand-rw: (groupid=0, jobs=1): err= 0: pid=181602: Sat May 16 06:44:17 2026 read: IOPS=1, BW=6062KiB/s (6208kB/s)(12.0MiB/2027msec) clat (msec): min=336, max=837, avg=654.01, stdev=276.03 lat (msec): min=336, max=837, avg=654.01, stdev=276.02 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 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= 6815, max= 8159, per=100.00%, avg=7487.00, stdev=950.35, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=66.67% cpu : usr=0.15%, sys=17.52%, ctx=68, 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=181603: Sat May 16 06:44:17 2026 read: IOPS=0, BW=1673KiB/s (1713kB/s)(4096KiB/2449msec) clat (nsec): min=786819k, max=786819k, avg=786819455.00, stdev= 0.00 lat (nsec): min=786822k, max=786822k, avg=786821631.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 785], 5.00th=[ 785], 10.00th=[ 785], 20.00th=[ 785], | 30.00th=[ 785], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 785], 80.00th=[ 785], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] 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=3345KiB/s (3425kB/s)(8192KiB/2449msec); 0 zone resets clat (msec): min=651, max=873, avg=762.22, stdev=157.21 lat (msec): min=651, max=873, avg=762.60, stdev=157.20 clat percentiles (msec): | 1.00th=[ 651], 5.00th=[ 651], 10.00th=[ 651], 20.00th=[ 651], | 30.00th=[ 651], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 877], | 70.00th=[ 877], 80.00th=[ 877], 90.00th=[ 877], 95.00th=[ 877], | 99.00th=[ 877], 99.50th=[ 877], 99.90th=[ 877], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 8192, max= 8192, per=63.78%, 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%, 1000=66.67% cpu : usr=0.04%, sys=15.85%, ctx=74, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=181605: Sat May 16 06:44:17 2026 write: IOPS=1, BW=4817KiB/s (4933kB/s)(12.0MiB/2551msec); 0 zone resets clat (msec): min=90, max=1809, avg=786.51, stdev=905.12 lat (msec): min=91, max=1810, avg=786.96, stdev=905.23 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 91], 10.00th=[ 91], 20.00th=[ 91], | 30.00th=[ 91], 40.00th=[ 460], 50.00th=[ 460], 60.00th=[ 460], | 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= 8192, max= 8192, per=63.78%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 100=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.04%, sys=10.35%, ctx=53, 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=181607: Sat May 16 06:44:17 2026 write: IOPS=1, BW=5099KiB/s (5221kB/s)(12.0MiB/2410msec); 0 zone resets clat (msec): min=468, max=1114, avg=713.32, stdev=349.96 lat (msec): min=468, max=1114, avg=713.73, stdev=349.93 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 1116], 80.00th=[ 1116], 90.00th=[ 1116], 95.00th=[ 1116], | 99.00th=[ 1116], 99.50th=[ 1116], 99.90th=[ 1116], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 8159, max= 8192, per=63.65%, avg=8175.50, stdev=23.33, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.04%, sys=17.64%, ctx=85, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=6690KiB/s (6851kB/s), 1673KiB/s-6062KiB/s (1713kB/s-6208kB/s), io=16.0MiB (16.8MB), run=2027-2449msec WRITE: bw=12.5MiB/s (13.2MB/s), 3345KiB/s-5099KiB/s (3425kB/s-5221kB/s), io=32.0MiB (33.6MB), run=2410-2551msec