== sanity test 398b: DIO and buffer IO race ============== 18:46:06 (1780526766) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 2.58515 s, 19.5 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=191307: Wed Jun 3 18:47:29 2026 read: IOPS=20, BW=81.5KiB/s (83.4kB/s)(5992KiB/73559msec) clat (usec): min=30, max=686754, avg=26427.76, stdev=21528.18 lat (usec): min=30, max=686754, avg=26429.40, stdev=21527.93 clat percentiles (usec): | 1.00th=[ 137], 5.00th=[ 9503], 10.00th=[ 11994], 20.00th=[ 15926], | 30.00th=[ 18482], 40.00th=[ 21103], 50.00th=[ 23725], 60.00th=[ 27395], | 70.00th=[ 30540], 80.00th=[ 35390], 90.00th=[ 42730], 95.00th=[ 48497], | 99.00th=[ 67634], 99.50th=[ 81265], 99.90th=[116917], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 26, max= 176, per=25.22%, avg=81.20, stdev=27.13, samples=146 iops : min= 6, max= 44, avg=19.82, stdev= 6.82, samples=146 write: IOPS=21, BW=85.6KiB/s (87.6kB/s)(6296KiB/73559msec); 0 zone resets clat (usec): min=776, max=89073, avg=21463.16, stdev=14816.15 lat (usec): min=777, max=89074, avg=21463.81, stdev=14816.21 clat percentiles (usec): | 1.00th=[ 2040], 5.00th=[ 3687], 10.00th=[ 5276], 20.00th=[ 7963], | 30.00th=[11207], 40.00th=[14877], 50.00th=[18482], 60.00th=[22938], | 70.00th=[27919], 80.00th=[33162], 90.00th=[41157], 95.00th=[48497], | 99.00th=[69731], 99.50th=[81265], 99.90th=[88605], 99.95th=[88605], | 99.99th=[88605] bw ( KiB/s): min= 6, max= 192, per=25.33%, avg=85.35, stdev=33.31, samples=146 iops : min= 1, max= 48, avg=20.86, stdev= 8.36, samples=146 lat (usec) : 50=0.07%, 100=0.07%, 250=0.78%, 500=0.23%, 1000=0.29% lat (msec) : 2=0.16%, 4=2.64%, 10=11.88%, 20=28.78%, 50=50.78% lat (msec) : 100=4.23%, 250=0.07%, 750=0.03% cpu : usr=0.04%, sys=27.55%, ctx=10812, 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=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=191308: Wed Jun 3 18:47:29 2026 read: IOPS=19, BW=79.8KiB/s (81.7kB/s)(5940KiB/74432msec) clat (usec): min=44, max=124301, avg=26103.33, stdev=13970.49 lat (usec): min=44, max=124302, avg=26103.84, stdev=13970.50 clat percentiles (usec): | 1.00th=[ 161], 5.00th=[ 9634], 10.00th=[ 11731], 20.00th=[ 14746], | 30.00th=[ 17957], 40.00th=[ 20317], 50.00th=[ 23725], 60.00th=[ 27395], | 70.00th=[ 31327], 80.00th=[ 35914], 90.00th=[ 43254], 95.00th=[ 50594], | 99.00th=[ 72877], 99.50th=[ 80217], 99.90th=[110625], 99.95th=[124257], | 99.99th=[124257] bw ( KiB/s): min= 6, max= 168, per=24.70%, avg=79.54, stdev=28.58, samples=148 iops : min= 1, max= 42, avg=19.41, stdev= 7.18, samples=148 write: IOPS=21, BW=85.3KiB/s (87.3kB/s)(6348KiB/74432msec); 0 zone resets clat (usec): min=737, max=691456, avg=22350.84, stdev=22774.19 lat (usec): min=737, max=691457, avg=22351.52, stdev=22774.15 clat percentiles (usec): | 1.00th=[ 1467], 5.00th=[ 3458], 10.00th=[ 5080], 20.00th=[ 7898], | 30.00th=[ 11469], 40.00th=[ 14877], 50.00th=[ 19006], 60.00th=[ 23462], | 70.00th=[ 28181], 80.00th=[ 34341], 90.00th=[ 43254], 95.00th=[ 51119], | 99.00th=[ 69731], 99.50th=[ 77071], 99.90th=[105382], 99.95th=[692061], | 99.99th=[692061] bw ( KiB/s): min= 6, max= 207, per=25.22%, avg=84.99, stdev=34.12, samples=148 iops : min= 1, max= 51, avg=20.78, stdev= 8.55, samples=148 lat (usec) : 50=0.03%, 100=0.10%, 250=0.78%, 500=0.13%, 750=0.03% lat (usec) : 1000=0.23% lat (msec) : 2=0.52%, 4=2.67%, 10=11.88%, 20=29.49%, 50=48.47% lat (msec) : 100=5.53%, 250=0.10%, 750=0.03% cpu : usr=0.04%, sys=26.71%, ctx=10769, 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=191310: Wed Jun 3 18:47:29 2026 read: IOPS=20, BW=80.9KiB/s (82.8kB/s)(6028KiB/74543msec) clat (usec): min=32, max=687264, avg=26482.02, stdev=22052.82 lat (usec): min=32, max=687264, avg=26482.55, stdev=22052.82 clat percentiles (usec): | 1.00th=[ 151], 5.00th=[ 9241], 10.00th=[ 11994], 20.00th=[ 15270], | 30.00th=[ 17957], 40.00th=[ 20579], 50.00th=[ 23725], 60.00th=[ 26870], | 70.00th=[ 30802], 80.00th=[ 35914], 90.00th=[ 43254], 95.00th=[ 51643], | 99.00th=[ 71828], 99.50th=[ 82314], 99.90th=[113771], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 31, max= 183, per=25.16%, avg=81.02, stdev=29.40, samples=147 iops : min= 7, max= 45, avg=19.78, stdev= 7.40, samples=147 write: IOPS=20, BW=83.0KiB/s (85.0kB/s)(6260KiB/74543msec); 0 zone resets clat (usec): min=777, max=109587, avg=22002.70, stdev=15189.19 lat (usec): min=778, max=109587, avg=22003.35, stdev=15189.20 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 3884], 10.00th=[ 5538], 20.00th=[ 8291], | 30.00th=[ 12125], 40.00th=[ 15401], 50.00th=[ 18744], 60.00th=[ 22676], | 70.00th=[ 27395], 80.00th=[ 33817], 90.00th=[ 43779], 95.00th=[ 50594], | 99.00th=[ 68682], 99.50th=[ 72877], 99.90th=[ 84411], 99.95th=[109577], | 99.99th=[109577] bw ( KiB/s): min= 19, max= 183, per=24.80%, avg=83.57, stdev=30.31, samples=148 iops : min= 4, max= 45, avg=20.42, stdev= 7.63, samples=148 lat (usec) : 50=0.07%, 100=0.07%, 250=0.98%, 500=0.20%, 1000=0.42% lat (msec) : 2=0.39%, 4=2.12%, 10=11.36%, 20=29.79%, 50=48.89% lat (msec) : 100=5.60%, 250=0.10%, 750=0.03% cpu : usr=0.04%, sys=26.96%, ctx=10845, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191311: Wed Jun 3 18:47:29 2026 read: IOPS=20, BW=81.5KiB/s (83.4kB/s)(6052KiB/74280msec) clat (usec): min=44, max=108272, avg=26028.34, stdev=14027.48 lat (usec): min=45, max=108273, avg=26028.83, stdev=14027.49 clat percentiles (usec): | 1.00th=[ 147], 5.00th=[ 9503], 10.00th=[ 11731], 20.00th=[ 15008], | 30.00th=[ 17957], 40.00th=[ 20841], 50.00th=[ 23462], 60.00th=[ 26870], | 70.00th=[ 31327], 80.00th=[ 35914], 90.00th=[ 42730], 95.00th=[ 51119], | 99.00th=[ 70779], 99.50th=[ 88605], 99.90th=[106431], 99.95th=[108528], | 99.99th=[108528] bw ( KiB/s): min= 7, max= 168, per=25.35%, avg=81.63, stdev=28.92, samples=146 iops : min= 1, max= 42, avg=19.93, stdev= 7.28, samples=146 write: IOPS=20, BW=83.0KiB/s (85.0kB/s)(6236KiB/74280msec); 0 zone resets clat (usec): min=761, max=706014, avg=22257.91, stdev=23473.84 lat (usec): min=761, max=706015, avg=22258.71, stdev=23473.78 clat percentiles (usec): | 1.00th=[ 1713], 5.00th=[ 3720], 10.00th=[ 5145], 20.00th=[ 7701], | 30.00th=[ 11338], 40.00th=[ 15008], 50.00th=[ 18482], 60.00th=[ 22414], | 70.00th=[ 26870], 80.00th=[ 33162], 90.00th=[ 43779], 95.00th=[ 53740], | 99.00th=[ 67634], 99.50th=[ 81265], 99.90th=[137364], 99.95th=[708838], | 99.99th=[708838] bw ( KiB/s): min= 24, max= 184, per=24.97%, avg=84.15, stdev=31.93, samples=146 iops : min= 6, max= 46, avg=20.56, stdev= 8.01, samples=146 lat (usec) : 50=0.03%, 100=0.07%, 250=0.91%, 500=0.26%, 1000=0.26% lat (msec) : 2=0.36%, 4=2.73%, 10=11.69%, 20=29.13%, 50=48.40% lat (msec) : 100=5.99%, 250=0.13%, 750=0.03% cpu : usr=0.07%, sys=26.98%, ctx=10902, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=322KiB/s (330kB/s), 79.8KiB/s-81.5KiB/s (81.7kB/s-83.4kB/s), io=23.4MiB (24.6MB), run=73559-74543msec WRITE: bw=337KiB/s (345kB/s), 83.0KiB/s-85.6KiB/s (85.0kB/s-87.6kB/s), io=24.6MiB (25.7MB), run=73559-74543msec rand-rw: (groupid=0, jobs=1): err= 0: pid=191312: Wed Jun 3 18:47:36 2026 read: IOPS=18, BW=73.5KiB/s (75.3kB/s)(5992KiB/81528msec) clat (msec): min=2, max=697, avg=24.21, stdev=24.74 lat (msec): min=2, max=697, avg=24.21, stdev=24.74 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 28], 80.00th=[ 35], 90.00th=[ 48], 95.00th=[ 61], | 99.00th=[ 87], 99.50th=[ 102], 99.90th=[ 138], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 15, max= 264, per=24.90%, avg=73.19, stdev=47.55, samples=161 iops : min= 3, max= 66, avg=17.83, stdev=11.99, samples=161 write: IOPS=19, BW=77.2KiB/s (79.1kB/s)(6296KiB/81528msec); 0 zone resets clat (msec): min=4, max=168, avg=28.65, stdev=19.07 lat (msec): min=4, max=168, avg=28.65, stdev=19.07 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 36], 80.00th=[ 43], 90.00th=[ 54], 95.00th=[ 63], | 99.00th=[ 94], 99.50th=[ 103], 99.90th=[ 142], 99.95th=[ 169], | 99.99th=[ 169] bw ( KiB/s): min= 16, max= 272, per=24.97%, avg=76.92, stdev=49.21, samples=161 iops : min= 4, max= 68, avg=18.76, stdev=12.42, samples=161 lat (msec) : 4=0.46%, 10=17.61%, 20=28.48%, 50=42.55%, 100=10.38% lat (msec) : 250=0.49%, 750=0.03% cpu : usr=0.05%, sys=16.01%, ctx=7704, 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=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=191313: Wed Jun 3 18:47:36 2026 read: IOPS=18, BW=73.1KiB/s (74.9kB/s)(5940KiB/81206msec) clat (msec): min=4, max=696, avg=24.80, stdev=24.77 lat (msec): min=4, max=696, avg=24.81, stdev=24.77 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 14], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 50], 95.00th=[ 61], | 99.00th=[ 85], 99.50th=[ 105], 99.90th=[ 132], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 15, max= 256, per=24.82%, avg=72.96, stdev=46.58, samples=160 iops : min= 3, max= 64, avg=17.76, stdev=11.73, samples=160 write: IOPS=19, BW=78.2KiB/s (80.0kB/s)(6348KiB/81206msec); 0 zone resets clat (msec): min=6, max=150, avg=27.85, stdev=18.25 lat (msec): min=6, max=150, avg=27.85, stdev=18.25 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 41], 90.00th=[ 53], 95.00th=[ 62], | 99.00th=[ 87], 99.50th=[ 108], 99.90th=[ 142], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 15, max= 248, per=25.24%, avg=77.74, stdev=46.19, samples=160 iops : min= 3, max= 62, avg=18.96, stdev=11.66, samples=160 lat (msec) : 10=16.34%, 20=30.40%, 50=42.84%, 100=9.83%, 250=0.55% lat (msec) : 750=0.03% cpu : usr=0.04%, sys=16.18%, ctx=7688, 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=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=191314: Wed Jun 3 18:47:36 2026 read: IOPS=18, BW=74.1KiB/s (75.9kB/s)(6028KiB/81340msec) clat (msec): min=3, max=114, avg=24.03, stdev=18.03 lat (msec): min=3, max=114, avg=24.04, stdev=18.03 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 19], 60.00th=[ 23], | 70.00th=[ 29], 80.00th=[ 36], 90.00th=[ 49], 95.00th=[ 62], | 99.00th=[ 89], 99.50th=[ 102], 99.90th=[ 114], 99.95th=[ 115], | 99.99th=[ 115] bw ( KiB/s): min= 15, max= 248, per=25.05%, avg=73.66, stdev=49.07, samples=160 iops : min= 3, max= 62, avg=17.94, stdev=12.39, samples=160 write: IOPS=19, BW=76.0KiB/s (78.8kB/s)(6260KiB/81340msec); 0 zone resets clat (msec): min=6, max=706, avg=28.72, stdev=25.13 lat (msec): min=6, max=706, avg=28.72, stdev=25.13 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 25], 60.00th=[ 30], | 70.00th=[ 35], 80.00th=[ 42], 90.00th=[ 53], 95.00th=[ 63], | 99.00th=[ 87], 99.50th=[ 113], 99.90th=[ 159], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 24, max= 247, per=24.74%, avg=76.20, stdev=45.55, samples=160 iops : min= 6, max= 61, avg=18.58, stdev=11.49, samples=160 lat (msec) : 4=0.10%, 10=17.42%, 20=29.65%, 50=42.55%, 100=9.77% lat (msec) : 250=0.49%, 750=0.03% cpu : usr=0.05%, sys=15.93%, ctx=7498, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191315: Wed Jun 3 18:47:36 2026 read: IOPS=18, BW=74.3KiB/s (76.1kB/s)(6052KiB/81469msec) clat (msec): min=2, max=119, avg=24.65, stdev=17.71 lat (msec): min=2, max=119, avg=24.65, stdev=17.71 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 7], 10.00th=[ 8], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 17], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 38], 90.00th=[ 51], 95.00th=[ 62], | 99.00th=[ 78], 99.50th=[ 89], 99.90th=[ 117], 99.95th=[ 120], | 99.99th=[ 120] bw ( KiB/s): min= 15, max= 264, per=25.29%, avg=74.34, stdev=46.11, samples=161 iops : min= 3, max= 66, avg=18.11, stdev=11.62, samples=161 write: IOPS=19, BW=76.5KiB/s (78.4kB/s)(6236KiB/81469msec); 0 zone resets clat (msec): min=5, max=704, avg=28.23, stdev=25.19 lat (msec): min=5, max=704, avg=28.23, stdev=25.19 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 12], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 34], 80.00th=[ 41], 90.00th=[ 52], 95.00th=[ 62], | 99.00th=[ 86], 99.50th=[ 115], 99.90th=[ 157], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 272, per=24.86%, avg=76.57, stdev=48.95, samples=161 iops : min= 1, max= 68, avg=18.67, stdev=12.36, samples=161 lat (msec) : 4=0.26%, 10=17.12%, 20=29.10%, 50=42.71%, 100=10.25% lat (msec) : 250=0.52%, 750=0.03% cpu : usr=0.05%, sys=16.00%, ctx=7647, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=295KiB/s (302kB/s), 73.1KiB/s-74.3KiB/s (74.9kB/s-76.1kB/s), io=23.4MiB (24.6MB), run=81206-81528msec WRITE: bw=308KiB/s (316kB/s), 76.5KiB/s-78.2KiB/s (78.4kB/s-80.0kB/s), io=24.6MiB (25.7MB), run=81206-81528msec 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=191340: Wed Jun 3 18:48:00 2026 read: IOPS=19, BW=313KiB/s (321kB/s)(5920KiB/18895msec) clat (usec): min=93, max=110378, avg=26092.38, stdev=14510.22 lat (usec): min=93, max=110378, avg=26092.90, stdev=14510.24 clat percentiles (usec): | 1.00th=[ 122], 5.00th=[ 7832], 10.00th=[ 11207], 20.00th=[ 14746], | 30.00th=[ 17957], 40.00th=[ 21103], 50.00th=[ 23987], 60.00th=[ 27132], | 70.00th=[ 31065], 80.00th=[ 36439], 90.00th=[ 44303], 95.00th=[ 52691], | 99.00th=[ 74974], 99.50th=[ 85459], 99.90th=[110625], 99.95th=[110625], | 99.99th=[110625] bw ( KiB/s): min= 126, max= 640, per=24.20%, avg=306.59, stdev=108.22, samples=37 iops : min= 7, max= 40, avg=18.54, stdev= 6.86, samples=37 write: IOPS=21, BW=337KiB/s (345kB/s)(6368KiB/18895msec); 0 zone resets clat (usec): min=1222, max=79358, avg=23021.24, stdev=14901.53 lat (usec): min=1222, max=79359, avg=23022.60, stdev=14901.35 clat percentiles (usec): | 1.00th=[ 3523], 5.00th=[ 5080], 10.00th=[ 6652], 20.00th=[10028], | 30.00th=[13042], 40.00th=[16909], 50.00th=[20317], 60.00th=[23725], | 70.00th=[28967], 80.00th=[34341], 90.00th=[43779], 95.00th=[51643], | 99.00th=[68682], 99.50th=[79168], 99.90th=[79168], 99.95th=[79168], | 99.99th=[79168] bw ( KiB/s): min= 63, max= 640, per=25.10%, avg=334.57, stdev=124.92, samples=37 iops : min= 3, max= 40, avg=20.30, stdev= 7.81, samples=37 lat (usec) : 100=0.13%, 250=1.69%, 500=0.39% lat (msec) : 2=0.13%, 4=0.65%, 10=11.33%, 20=29.17%, 50=50.26% lat (msec) : 100=6.12%, 250=0.13% cpu : usr=0.07%, sys=29.70%, ctx=3235, 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=191341: Wed Jun 3 18:48:00 2026 read: IOPS=19, BW=309KiB/s (316kB/s)(5744KiB/18594msec) clat (usec): min=109, max=101958, avg=26686.18, stdev=14586.04 lat (usec): min=110, max=101958, avg=26686.72, stdev=14586.06 clat percentiles (usec): | 1.00th=[ 128], 5.00th=[ 8455], 10.00th=[ 12125], 20.00th=[ 16057], | 30.00th=[ 19006], 40.00th=[ 21627], 50.00th=[ 24773], 60.00th=[ 27657], | 70.00th=[ 31327], 80.00th=[ 35914], 90.00th=[ 43779], 95.00th=[ 52691], | 99.00th=[ 77071], 99.50th=[100140], 99.90th=[102237], 99.95th=[102237], | 99.99th=[102237] bw ( KiB/s): min= 95, max= 542, per=24.24%, avg=307.17, stdev=109.18, samples=36 iops : min= 5, max= 33, avg=18.58, stdev= 6.92, samples=36 write: IOPS=21, BW=352KiB/s (360kB/s)(6544KiB/18594msec); 0 zone resets clat (usec): min=1224, max=85416, avg=21895.16, stdev=14274.73 lat (usec): min=1225, max=85417, avg=21896.01, stdev=14274.75 clat percentiles (usec): | 1.00th=[ 3294], 5.00th=[ 5014], 10.00th=[ 6587], 20.00th=[ 9765], | 30.00th=[12387], 40.00th=[15795], 50.00th=[19006], 60.00th=[23200], | 70.00th=[26608], 80.00th=[30802], 90.00th=[40109], 95.00th=[49546], | 99.00th=[67634], 99.50th=[80217], 99.90th=[85459], 99.95th=[85459], | 99.99th=[85459] bw ( KiB/s): min= 127, max= 574, per=25.76%, avg=343.44, stdev=117.62, samples=36 iops : min= 7, max= 35, avg=20.86, stdev= 7.45, samples=36 lat (usec) : 250=1.82%, 500=0.13% lat (msec) : 2=0.26%, 4=0.39%, 10=11.07%, 20=29.82%, 50=51.30% lat (msec) : 100=4.95%, 250=0.26% cpu : usr=0.03%, sys=30.45%, ctx=3089, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191342: Wed Jun 3 18:48:00 2026 read: IOPS=20, BW=335KiB/s (343kB/s)(6256KiB/18663msec) clat (usec): min=95, max=86979, avg=25790.35, stdev=13796.96 lat (usec): min=96, max=86981, avg=25790.91, stdev=13796.99 clat percentiles (usec): | 1.00th=[ 118], 5.00th=[ 7570], 10.00th=[12256], 20.00th=[15533], | 30.00th=[18220], 40.00th=[19530], 50.00th=[22676], 60.00th=[27132], | 70.00th=[31327], 80.00th=[34866], 90.00th=[45876], 95.00th=[53216], | 99.00th=[62129], 99.50th=[82314], 99.90th=[86508], 99.95th=[86508], | 99.99th=[86508] bw ( KiB/s): min= 158, max= 704, per=26.24%, avg=332.47, stdev=128.89, samples=36 iops : min= 9, max= 44, avg=20.17, stdev= 8.16, samples=36 write: IOPS=20, BW=323KiB/s (331kB/s)(6032KiB/18663msec); 0 zone resets clat (usec): min=1157, max=70444, avg=22481.91, stdev=15059.82 lat (usec): min=1158, max=70446, avg=22483.69, stdev=15059.75 clat percentiles (usec): | 1.00th=[ 3523], 5.00th=[ 5211], 10.00th=[ 5800], 20.00th=[ 9241], | 30.00th=[11994], 40.00th=[15664], 50.00th=[18744], 60.00th=[23462], | 70.00th=[27919], 80.00th=[33162], 90.00th=[45351], 95.00th=[53216], | 99.00th=[69731], 99.50th=[70779], 99.90th=[70779], 99.95th=[70779], | 99.99th=[70779] bw ( KiB/s): min= 126, max= 574, per=23.25%, avg=309.97, stdev=106.53, samples=36 iops : min= 7, max= 35, avg=18.75, stdev= 6.66, samples=36 lat (usec) : 100=0.13%, 250=1.82%, 500=0.39% lat (msec) : 2=0.39%, 4=0.13%, 10=12.11%, 20=31.77%, 50=46.88% lat (msec) : 100=6.38% cpu : usr=0.03%, sys=29.79%, ctx=2974, 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=191343: Wed Jun 3 18:48:00 2026 read: IOPS=20, BW=321KiB/s (329kB/s)(6032KiB/18793msec) clat (usec): min=33, max=97438, avg=25845.17, stdev=15155.84 lat (usec): min=33, max=97438, avg=25845.72, stdev=15155.87 clat percentiles (usec): | 1.00th=[ 90], 5.00th=[ 178], 10.00th=[ 9896], 20.00th=[14746], | 30.00th=[17695], 40.00th=[20317], 50.00th=[23200], 60.00th=[27132], | 70.00th=[31851], 80.00th=[37487], 90.00th=[45351], 95.00th=[53740], | 99.00th=[66847], 99.50th=[88605], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 158, max= 544, per=25.05%, avg=317.35, stdev=108.23, samples=37 iops : min= 9, max= 34, avg=19.22, stdev= 6.80, samples=37 write: IOPS=20, BW=333KiB/s (341kB/s)(6256KiB/18793msec); 0 zone resets clat (usec): min=2032, max=90472, avg=23088.06, stdev=15944.03 lat (usec): min=2032, max=90473, avg=23088.96, stdev=15944.09 clat percentiles (usec): | 1.00th=[ 3097], 5.00th=[ 5080], 10.00th=[ 6259], 20.00th=[ 9634], | 30.00th=[12125], 40.00th=[15401], 50.00th=[20055], 60.00th=[23987], | 70.00th=[29492], 80.00th=[34341], 90.00th=[42206], 95.00th=[54264], | 99.00th=[80217], 99.50th=[89654], 99.90th=[90702], 99.95th=[90702], | 99.99th=[90702] bw ( KiB/s): min= 95, max= 606, per=24.95%, avg=332.62, stdev=122.90, samples=37 iops : min= 5, max= 37, avg=20.16, stdev= 7.78, samples=37 lat (usec) : 50=0.26%, 100=0.52%, 250=2.73%, 500=0.13% lat (msec) : 4=0.78%, 10=12.37%, 20=27.08%, 50=49.48%, 100=6.64% cpu : usr=0.07%, sys=29.11%, ctx=3069, 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=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=1268KiB/s (1298kB/s), 309KiB/s-335KiB/s (316kB/s-343kB/s), io=23.4MiB (24.5MB), run=18594-18895msec WRITE: bw=1334KiB/s (1366kB/s), 323KiB/s-352KiB/s (331kB/s-360kB/s), io=24.6MiB (25.8MB), run=18594-18895msec rand-rw: (groupid=0, jobs=1): err= 0: pid=191345: Wed Jun 3 18:48:02 2026 read: IOPS=18, BW=292KiB/s (299kB/s)(5920KiB/20280msec) clat (msec): min=3, max=102, avg=22.79, stdev=17.93 lat (msec): min=3, max=102, avg=22.79, stdev=17.93 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 9], | 30.00th=[ 12], 40.00th=[ 15], 50.00th=[ 18], 60.00th=[ 22], | 70.00th=[ 27], 80.00th=[ 32], 90.00th=[ 49], 95.00th=[ 61], | 99.00th=[ 83], 99.50th=[ 97], 99.90th=[ 103], 99.95th=[ 103], | 99.99th=[ 103] bw ( KiB/s): min= 95, max= 960, per=24.78%, avg=292.70, stdev=210.05, samples=40 iops : min= 5, max= 60, avg=17.75, stdev=13.16, samples=40 write: IOPS=19, BW=314KiB/s (322kB/s)(6368KiB/20280msec); 0 zone resets clat (msec): min=4, max=113, avg=29.58, stdev=20.77 lat (msec): min=4, max=113, avg=29.58, stdev=20.77 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 19], 50.00th=[ 25], 60.00th=[ 32], | 70.00th=[ 39], 80.00th=[ 47], 90.00th=[ 59], 95.00th=[ 72], | 99.00th=[ 93], 99.50th=[ 107], 99.90th=[ 114], 99.95th=[ 114], | 99.99th=[ 114] bw ( KiB/s): min= 63, max= 1021, per=25.38%, avg=315.22, stdev=214.89, samples=40 iops : min= 3, max= 63, avg=19.15, stdev=13.52, samples=40 lat (msec) : 4=0.91%, 10=20.31%, 20=27.47%, 50=38.28%, 100=12.63% lat (msec) : 250=0.39% cpu : usr=0.04%, sys=14.95%, ctx=1927, 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=191346: Wed Jun 3 18:48:02 2026 read: IOPS=17, BW=284KiB/s (291kB/s)(5744KiB/20240msec) clat (msec): min=3, max=103, avg=24.56, stdev=19.05 lat (msec): min=3, max=103, avg=24.56, stdev=19.05 clat percentiles (msec): | 1.00th=[ 5], 5.00th=[ 6], 10.00th=[ 7], 20.00th=[ 10], | 30.00th=[ 13], 40.00th=[ 16], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 29], 80.00th=[ 34], 90.00th=[ 55], 95.00th=[ 65], | 99.00th=[ 91], 99.50th=[ 100], 99.90th=[ 104], 99.95th=[ 104], | 99.99th=[ 104] bw ( KiB/s): min= 67, max= 960, per=23.55%, avg=278.18, stdev=180.65, samples=39 iops : min= 4, max= 60, avg=16.82, stdev=11.33, samples=39 write: IOPS=20, BW=323KiB/s (331kB/s)(6544KiB/20240msec); 0 zone resets clat (msec): min=5, max=116, avg=27.75, stdev=19.45 lat (msec): min=5, max=116, avg=27.75, stdev=19.45 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 14], 40.00th=[ 18], 50.00th=[ 23], 60.00th=[ 28], | 70.00th=[ 35], 80.00th=[ 45], 90.00th=[ 58], 95.00th=[ 66], | 99.00th=[ 83], 99.50th=[ 85], 99.90th=[ 117], 99.95th=[ 117], | 99.99th=[ 117] bw ( KiB/s): min= 128, max= 1341, per=25.01%, avg=310.64, stdev=227.33, samples=39 iops : min= 8, max= 83, avg=18.85, stdev=14.21, samples=39 lat (msec) : 4=0.13%, 10=20.05%, 20=27.08%, 50=39.06%, 100=13.41% lat (msec) : 250=0.26% cpu : usr=0.05%, sys=15.06%, ctx=1892, 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=191347: Wed Jun 3 18:48:02 2026 read: IOPS=19, BW=309KiB/s (317kB/s)(6256KiB/20237msec) clat (usec): min=3953, max=96486, avg=23103.83, stdev=17612.85 lat (usec): min=3953, max=96487, avg=23104.45, stdev=17612.91 clat percentiles (usec): | 1.00th=[ 4359], 5.00th=[ 5342], 10.00th=[ 5997], 20.00th=[ 7701], | 30.00th=[11076], 40.00th=[14615], 50.00th=[19006], 60.00th=[22938], | 70.00th=[26608], 80.00th=[33424], 90.00th=[49021], 95.00th=[58459], | 99.00th=[79168], 99.50th=[91751], 99.90th=[96994], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 63, max= 1280, per=25.62%, avg=302.62, stdev=236.19, samples=39 iops : min= 3, max= 80, avg=18.33, stdev=14.84, samples=39 write: IOPS=18, BW=298KiB/s (305kB/s)(6032KiB/20237msec); 0 zone resets clat (msec): min=5, max=127, avg=29.54, stdev=20.80 lat (msec): min=5, max=127, avg=29.54, stdev=20.80 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 8], 10.00th=[ 8], 20.00th=[ 11], | 30.00th=[ 15], 40.00th=[ 20], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 47], 90.00th=[ 58], 95.00th=[ 69], | 99.00th=[ 104], 99.50th=[ 108], 99.90th=[ 128], 99.95th=[ 128], | 99.99th=[ 128] bw ( KiB/s): min= 95, max= 1021, per=22.87%, avg=284.08, stdev=185.28, samples=39 iops : min= 5, max= 63, avg=17.18, stdev=11.60, samples=39 lat (msec) : 4=0.13%, 10=22.01%, 20=24.74%, 50=40.23%, 100=12.37% lat (msec) : 250=0.52% cpu : usr=0.02%, sys=15.00%, ctx=1895, 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=191348: Wed Jun 3 18:48:02 2026 read: IOPS=18, BW=298KiB/s (305kB/s)(6032KiB/20252msec) clat (usec): min=3392, max=94854, avg=23573.88, stdev=19032.63 lat (usec): min=3392, max=94854, avg=23574.41, stdev=19032.62 clat percentiles (usec): | 1.00th=[ 4113], 5.00th=[ 5604], 10.00th=[ 6194], 20.00th=[ 7635], | 30.00th=[11338], 40.00th=[12911], 50.00th=[17171], 60.00th=[21890], | 70.00th=[27132], 80.00th=[36439], 90.00th=[53216], 95.00th=[63177], | 99.00th=[85459], 99.50th=[93848], 99.90th=[94897], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 126, max= 1245, per=24.30%, avg=287.00, stdev=213.34, samples=39 iops : min= 7, max= 77, avg=17.36, stdev=13.39, samples=39 write: IOPS=19, BW=309KiB/s (316kB/s)(6256KiB/20252msec); 0 zone resets clat (msec): min=5, max=114, avg=28.78, stdev=19.92 lat (msec): min=5, max=114, avg=28.78, stdev=19.92 clat percentiles (msec): | 1.00th=[ 6], 5.00th=[ 8], 10.00th=[ 9], 20.00th=[ 12], | 30.00th=[ 16], 40.00th=[ 20], 50.00th=[ 24], 60.00th=[ 29], | 70.00th=[ 36], 80.00th=[ 43], 90.00th=[ 56], 95.00th=[ 69], | 99.00th=[ 100], 99.50th=[ 105], 99.90th=[ 114], 99.95th=[ 114], | 99.99th=[ 114] bw ( KiB/s): min= 127, max= 992, per=24.10%, avg=299.36, stdev=193.83, samples=39 iops : min= 7, max= 62, avg=18.15, stdev=12.13, samples=39 lat (msec) : 4=0.39%, 10=20.83%, 20=27.73%, 50=38.15%, 100=12.50% lat (msec) : 250=0.39% cpu : usr=0.02%, sys=15.05%, ctx=1948, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=1181KiB/s (1209kB/s), 284KiB/s-309KiB/s (291kB/s-317kB/s), io=23.4MiB (24.5MB), run=20237-20280msec WRITE: bw=1243KiB/s (1272kB/s), 298KiB/s-323KiB/s (305kB/s-331kB/s), io=24.6MiB (25.8MB), run=20237-20280msec 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=191356: Wed Jun 3 18:48:10 2026 read: IOPS=3, BW=3622KiB/s (3709kB/s)(7168KiB/1979msec) clat (usec): min=460, max=156620, avg=114702.77, stdev=54219.77 lat (usec): min=461, max=156627, avg=114704.37, stdev=54220.46 clat percentiles (usec): | 1.00th=[ 461], 5.00th=[ 461], 10.00th=[ 461], 20.00th=[ 99091], | 30.00th=[115868], 40.00th=[115868], 50.00th=[135267], 60.00th=[143655], | 70.00th=[143655], 80.00th=[149947], 90.00th=[156238], 95.00th=[156238], | 99.00th=[156238], 99.50th=[156238], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 4096, max= 5171, per=70.14%, avg=4633.50, stdev=760.14, samples=2 iops : min= 4, max= 5, avg= 4.50, stdev= 0.71, samples=2 write: IOPS=2, BW=2587KiB/s (2649kB/s)(5120KiB/1979msec); 0 zone resets clat (msec): min=155, max=314, avg=229.42, stdev=61.46 lat (msec): min=155, max=314, avg=229.45, stdev=61.44 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 157], 10.00th=[ 157], 20.00th=[ 157], | 30.00th=[ 186], 40.00th=[ 186], 50.00th=[ 245], 60.00th=[ 245], | 70.00th=[ 249], 80.00th=[ 249], 90.00th=[ 313], 95.00th=[ 313], | 99.00th=[ 313], 99.50th=[ 313], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 2048, max= 5807, per=42.46%, avg=3927.50, stdev=2658.01, samples=2 iops : min= 2, max= 5, avg= 3.50, stdev= 2.12, samples=2 lat (usec) : 500=8.33% lat (msec) : 100=8.33%, 250=75.00%, 500=8.33% cpu : usr=0.10%, sys=57.68%, ctx=598, 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=191357: Wed Jun 3 18:48:10 2026 read: IOPS=0, BW=661KiB/s (677kB/s)(2048KiB/3100msec) clat (msec): min=80, max=154, avg=117.52, stdev=51.91 lat (msec): min=80, max=154, avg=117.52, stdev=51.91 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 82], 10.00th=[ 82], 20.00th=[ 82], | 30.00th=[ 82], 40.00th=[ 82], 50.00th=[ 82], 60.00th=[ 155], | 70.00th=[ 155], 80.00th=[ 155], 90.00th=[ 155], 95.00th=[ 155], | 99.00th=[ 155], 99.50th=[ 155], 99.90th=[ 155], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 1706, max= 1973, per=27.85%, avg=1839.50, stdev=188.80, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3303KiB/s (3383kB/s)(10.0MiB/3100msec); 0 zone resets clat (msec): min=120, max=470, avg=285.75, stdev=130.72 lat (msec): min=120, max=470, avg=285.80, stdev=130.72 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 155], | 30.00th=[ 176], 40.00th=[ 186], 50.00th=[ 203], 60.00th=[ 347], | 70.00th=[ 380], 80.00th=[ 393], 90.00th=[ 435], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 1706, max= 4096, per=29.85%, avg=2761.20, stdev=1222.77, samples=5 iops : min= 1, max= 4, avg= 2.20, stdev= 1.64, samples=5 lat (msec) : 100=8.33%, 250=50.00%, 500=41.67% cpu : usr=0.00%, sys=49.69%, ctx=422, 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=191358: Wed Jun 3 18:48:10 2026 read: IOPS=2, BW=2843KiB/s (2911kB/s)(6144KiB/2161msec) clat (usec): min=343, max=158412, avg=51477.31, stdev=79135.76 lat (usec): min=343, max=158413, avg=51478.01, stdev=79135.59 clat percentiles (usec): | 1.00th=[ 343], 5.00th=[ 343], 10.00th=[ 343], 20.00th=[ 453], | 30.00th=[ 453], 40.00th=[ 461], 50.00th=[ 461], 60.00th=[ 478], | 70.00th=[147850], 80.00th=[147850], 90.00th=[158335], 95.00th=[158335], | 99.00th=[158335], 99.50th=[158335], 99.90th=[158335], 99.95th=[158335], | 99.99th=[158335] bw ( KiB/s): min= 1973, max= 4096, per=50.16%, avg=3313.33, stdev=1166.20, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=2, BW=2843KiB/s (2911kB/s)(6144KiB/2161msec); 0 zone resets clat (msec): min=159, max=631, avg=304.64, stdev=180.59 lat (msec): min=159, max=631, avg=304.69, stdev=180.60 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 161], 10.00th=[ 161], 20.00th=[ 163], | 30.00th=[ 163], 40.00th=[ 211], 50.00th=[ 211], 60.00th=[ 288], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 634], 95.00th=[ 634], | 99.00th=[ 634], 99.50th=[ 634], 99.90th=[ 634], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 1935, max= 3401, per=25.29%, avg=2339.25, stdev=709.39, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (usec) : 500=33.33% lat (msec) : 250=41.67%, 500=16.67%, 750=8.33% cpu : usr=0.00%, sys=43.29%, ctx=291, 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=191359: Wed Jun 3 18:48:10 2026 read: IOPS=2, BW=2171KiB/s (2223kB/s)(5120KiB/2358msec) clat (usec): min=334, max=194311, avg=93999.69, stdev=90449.25 lat (usec): min=335, max=194311, avg=94000.22, stdev=90449.20 clat percentiles (usec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 359], 40.00th=[ 359], 50.00th=[111674], 60.00th=[111674], | 70.00th=[162530], 80.00th=[162530], 90.00th=[193987], 95.00th=[193987], | 99.00th=[193987], 99.50th=[193987], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 7742, max= 7742, per=100.00%, avg=7742.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=2, BW=3040KiB/s (3113kB/s)(7168KiB/2358msec); 0 zone resets clat (msec): min=151, max=450, avg=264.82, stdev=119.62 lat (msec): min=151, max=450, avg=264.88, stdev=119.63 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 153], 10.00th=[ 153], 20.00th=[ 167], | 30.00th=[ 199], 40.00th=[ 199], 50.00th=[ 236], 60.00th=[ 236], | 70.00th=[ 236], 80.00th=[ 418], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 1723, max= 6144, per=42.57%, avg=3937.67, stdev=2210.51, samples=3 iops : min= 1, max= 6, avg= 3.33, stdev= 2.52, samples=3 lat (usec) : 500=16.67% lat (msec) : 250=66.67%, 500=16.67% cpu : usr=0.00%, sys=51.63%, ctx=199, 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=6606KiB/s (6765kB/s), 661KiB/s-3622KiB/s (677kB/s-3709kB/s), io=20.0MiB (20.0MB), run=1979-3100msec WRITE: bw=9249KiB/s (9471kB/s), 2587KiB/s-3303KiB/s (2649kB/s-3383kB/s), io=28.0MiB (29.4MB), run=1979-3100msec rand-rw: (groupid=0, jobs=1): err= 0: pid=191361: Wed Jun 3 18:48:10 2026 read: IOPS=2, BW=2503KiB/s (2563kB/s)(7168KiB/2864msec) clat (msec): min=56, max=572, avg=226.71, stdev=192.15 lat (msec): min=56, max=572, avg=226.71, stdev=192.15 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 57], 10.00th=[ 57], 20.00th=[ 57], | 30.00th=[ 136], 40.00th=[ 136], 50.00th=[ 140], 60.00th=[ 234], | 70.00th=[ 234], 80.00th=[ 393], 90.00th=[ 575], 95.00th=[ 575], | 99.00th=[ 575], 99.50th=[ 575], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 1780, max= 4087, per=35.58%, avg=2381.20, stdev=959.42, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=1, BW=1788KiB/s (1831kB/s)(5120KiB/2864msec); 0 zone resets clat (msec): min=116, max=384, avg=248.11, stdev=133.14 lat (msec): min=116, max=384, avg=248.15, stdev=133.13 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 117], 10.00th=[ 117], 20.00th=[ 117], | 30.00th=[ 117], 40.00th=[ 117], 50.00th=[ 241], 60.00th=[ 241], | 70.00th=[ 384], 80.00th=[ 384], 90.00th=[ 384], 95.00th=[ 384], | 99.00th=[ 384], 99.50th=[ 384], 99.90th=[ 384], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 1961, max= 6119, per=43.12%, avg=4040.00, stdev=2940.15, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 100=16.67%, 250=50.00%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=20.75%, ctx=222, 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=191362: Wed Jun 3 18:48:10 2026 read: IOPS=0, BW=669KiB/s (685kB/s)(2048KiB/3060msec) clat (msec): min=112, max=326, avg=219.32, stdev=151.21 lat (msec): min=112, max=326, avg=219.32, stdev=151.21 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 113], 10.00th=[ 113], 20.00th=[ 113], | 30.00th=[ 113], 40.00th=[ 113], 50.00th=[ 113], 60.00th=[ 326], | 70.00th=[ 326], 80.00th=[ 326], 90.00th=[ 326], 95.00th=[ 326], | 99.00th=[ 326], 99.50th=[ 326], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 1721, max= 2039, per=28.09%, avg=1880.00, stdev=224.86, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=3, BW=3346KiB/s (3427kB/s)(10.0MiB/3060msec); 0 zone resets clat (msec): min=44, max=755, avg=256.73, stdev=214.40 lat (msec): min=44, max=755, avg=256.78, stdev=214.40 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 45], 10.00th=[ 45], 20.00th=[ 72], | 30.00th=[ 102], 40.00th=[ 155], 50.00th=[ 169], 60.00th=[ 220], | 70.00th=[ 262], 80.00th=[ 351], 90.00th=[ 439], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 2043, max= 6119, per=43.55%, avg=4080.33, stdev=2038.00, samples=3 iops : min= 1, max= 5, avg= 3.00, stdev= 2.00, samples=3 lat (msec) : 50=8.33%, 100=8.33%, 250=41.67%, 500=33.33%, 1000=8.33% cpu : usr=0.00%, sys=22.79%, ctx=149, 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=191363: Wed Jun 3 18:48:10 2026 read: IOPS=2, BW=2182KiB/s (2234kB/s)(6144KiB/2816msec) clat (msec): min=43, max=430, avg=170.57, stdev=153.30 lat (msec): min=43, max=430, avg=170.57, stdev=153.30 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 44], 10.00th=[ 44], 20.00th=[ 57], | 30.00th=[ 57], 40.00th=[ 104], 50.00th=[ 104], 60.00th=[ 107], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 1961, max= 4079, per=40.26%, avg=2694.33, stdev=1199.86, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=2, BW=2182KiB/s (2234kB/s)(6144KiB/2816msec); 0 zone resets clat (msec): min=54, max=551, avg=290.56, stdev=178.50 lat (msec): min=54, max=551, avg=290.61, stdev=178.52 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 55], 10.00th=[ 55], 20.00th=[ 144], | 30.00th=[ 144], 40.00th=[ 255], 50.00th=[ 255], 60.00th=[ 359], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] bw ( KiB/s): min= 1744, max= 4079, per=26.21%, avg=2455.75, stdev=1089.34, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 50=8.33%, 100=16.67%, 250=25.00%, 500=41.67%, 750=8.33% cpu : usr=0.00%, sys=15.06%, ctx=138, 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=191364: Wed Jun 3 18:48:10 2026 read: IOPS=1, BW=1731KiB/s (1772kB/s)(5120KiB/2958msec) clat (msec): min=48, max=257, avg=139.04, stdev=106.53 lat (msec): min=48, max=257, avg=139.04, stdev=106.53 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 48], 10.00th=[ 48], 20.00th=[ 48], | 30.00th=[ 62], 40.00th=[ 62], 50.00th=[ 75], 60.00th=[ 75], | 70.00th=[ 253], 80.00th=[ 253], 90.00th=[ 257], 95.00th=[ 257], | 99.00th=[ 257], 99.50th=[ 257], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 2043, max= 6119, per=60.98%, avg=4081.00, stdev=2882.17, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=2, BW=2423KiB/s (2481kB/s)(7168KiB/2958msec); 0 zone resets clat (msec): min=95, max=808, avg=319.42, stdev=258.00 lat (msec): min=95, max=808, avg=319.48, stdev=258.00 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 112], | 30.00th=[ 176], 40.00th=[ 176], 50.00th=[ 234], 60.00th=[ 296], | 70.00th=[ 296], 80.00th=[ 514], 90.00th=[ 810], 95.00th=[ 810], | 99.00th=[ 810], 99.50th=[ 810], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 1838, max= 3923, per=26.26%, avg=2460.75, stdev=979.52, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 50=8.33%, 100=25.00%, 250=25.00%, 500=25.00%, 750=8.33% lat (msec) : 1000=8.33% cpu : usr=0.00%, sys=20.26%, ctx=141, 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=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=6693KiB/s (6853kB/s), 669KiB/s-2503KiB/s (685kB/s-2563kB/s), io=20.0MiB (20.0MB), run=2816-3060msec WRITE: bw=9370KiB/s (9595kB/s), 1788KiB/s-3346KiB/s (1831kB/s-3427kB/s), io=28.0MiB (29.4MB), run=2816-3060msec 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=191370: Wed Jun 3 18:48:19 2026 read: IOPS=2, BW=9729KiB/s (9963kB/s)(12.0MiB/1263msec) clat (msec): min=355, max=456, avg=408.96, stdev=50.70 lat (msec): min=355, max=456, avg=408.97, stdev=50.70 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 355], 10.00th=[ 355], 20.00th=[ 355], | 30.00th=[ 355], 40.00th=[ 414], 50.00th=[ 414], 60.00th=[ 414], | 70.00th=[ 456], 80.00th=[ 456], 90.00th=[ 456], 95.00th=[ 456], | 99.00th=[ 456], 99.50th=[ 456], 99.90th=[ 456], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 6430, max= 8192, per=92.24%, avg=7311.00, stdev=1245.92, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=100.00% cpu : usr=0.00%, sys=55.58%, ctx=2728, 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=191372: Wed Jun 3 18:48:19 2026 read: IOPS=0, BW=1982KiB/s (2029kB/s)(4096KiB/2067msec) clat (nsec): min=448972k, max=448972k, avg=448972017.00, stdev= 0.00 lat (nsec): min=448975k, max=448975k, avg=448974678.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 451], | 30.00th=[ 451], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 451], 80.00th=[ 451], 90.00th=[ 451], 95.00th=[ 451], | 99.00th=[ 451], 99.50th=[ 451], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 5785, max= 5785, per=72.99%, avg=5785.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3963KiB/s (4058kB/s)(8192KiB/2067msec); 0 zone resets clat (msec): min=309, max=1293, avg=801.49, stdev=695.30 lat (msec): min=310, max=1293, avg=801.76, stdev=695.27 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 309], 50.00th=[ 309], 60.00th=[ 1301], | 70.00th=[ 1301], 80.00th=[ 1301], 90.00th=[ 1301], 95.00th=[ 1301], | 99.00th=[ 1301], 99.50th=[ 1301], 99.90th=[ 1301], 99.95th=[ 1301], | 99.99th=[ 1301] lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=20.96%, ctx=771, 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=191374: Wed Jun 3 18:48:19 2026 write: IOPS=1, BW=6624KiB/s (6783kB/s)(12.0MiB/1855msec); 0 zone resets clat (msec): min=248, max=962, avg=611.24, stdev=357.03 lat (msec): min=248, max=962, avg=611.57, stdev=357.09 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 249], 10.00th=[ 249], 20.00th=[ 249], | 30.00th=[ 249], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 961], 80.00th=[ 961], 90.00th=[ 961], 95.00th=[ 961], | 99.00th=[ 961], 99.50th=[ 961], 99.90th=[ 961], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 8192, max= 8192, per=51.68%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 250=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.11%, sys=16.72%, ctx=89, 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=191376: Wed Jun 3 18:48:19 2026 write: IOPS=1, BW=7140KiB/s (7311kB/s)(12.0MiB/1721msec); 0 zone resets clat (msec): min=322, max=737, avg=558.31, stdev=213.24 lat (msec): min=322, max=737, avg=558.58, stdev=213.25 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 735], 95.00th=[ 735], | 99.00th=[ 735], 99.50th=[ 735], 99.90th=[ 735], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 8192, max= 8192, per=51.68%, avg=8192.00, stdev= 0.00, samples=2 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.12%, sys=19.01%, ctx=83, 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 Run status group 0 (all jobs): READ: bw=7926KiB/s (8117kB/s), 1982KiB/s-9729KiB/s (2029kB/s-9963kB/s), io=16.0MiB (16.8MB), run=1263-2067msec WRITE: bw=15.5MiB/s (16.2MB/s), 3963KiB/s-7140KiB/s (4058kB/s-7311kB/s), io=32.0MiB (33.6MB), run=1721-2067msec rand-rw: (groupid=0, jobs=1): err= 0: pid=191371: Wed Jun 3 18:48:19 2026 read: IOPS=1, BW=7520KiB/s (7701kB/s)(12.0MiB/1634msec) clat (msec): min=484, max=568, avg=537.85, stdev=46.09 lat (msec): min=484, max=568, avg=537.85, stdev=46.09 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 485], 10.00th=[ 485], 20.00th=[ 485], | 30.00th=[ 485], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 567], 80.00th=[ 567], 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= 6131, max= 8192, per=80.34%, avg=7161.50, stdev=1457.35, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 750=66.67% cpu : usr=0.00%, sys=16.60%, ctx=71, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=191373: Wed Jun 3 18:48:19 2026 read: IOPS=0, BW=2229KiB/s (2282kB/s)(4096KiB/1838msec) clat (nsec): min=271322k, max=271322k, avg=271321900.00, stdev= 0.00 lat (nsec): min=271324k, max=271324k, avg=271323911.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 271], 10.00th=[ 271], 20.00th=[ 271], | 30.00th=[ 271], 40.00th=[ 271], 50.00th=[ 271], 60.00th=[ 271], | 70.00th=[ 271], 80.00th=[ 271], 90.00th=[ 271], 95.00th=[ 271], | 99.00th=[ 271], 99.50th=[ 271], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 5673, max= 5673, per=63.64%, avg=5673.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=1, BW=4457KiB/s (4564kB/s)(8192KiB/1838msec); 0 zone resets clat (msec): min=603, max=941, avg=772.64, stdev=238.60 lat (msec): min=604, max=941, avg=772.93, stdev=238.58 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 944], | 70.00th=[ 944], 80.00th=[ 944], 90.00th=[ 944], 95.00th=[ 944], | 99.00th=[ 944], 99.50th=[ 944], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 8126, max= 8126, per=49.23%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 750=33.33%, 1000=33.33% cpu : usr=0.00%, sys=14.74%, ctx=82, 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=191375: Wed Jun 3 18:48:19 2026 write: IOPS=1, BW=6190KiB/s (6339kB/s)(12.0MiB/1985msec); 0 zone resets clat (msec): min=133, max=1325, avg=649.70, stdev=611.87 lat (msec): min=134, max=1326, avg=649.97, stdev=611.86 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 134], 10.00th=[ 134], 20.00th=[ 134], | 30.00th=[ 134], 40.00th=[ 489], 50.00th=[ 489], 60.00th=[ 489], | 70.00th=[ 1334], 80.00th=[ 1334], 90.00th=[ 1334], 95.00th=[ 1334], | 99.00th=[ 1334], 99.50th=[ 1334], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 8126, max= 8126, per=49.23%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 500=33.33%, 2000=33.33% cpu : usr=0.05%, sys=13.91%, ctx=62, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=191377: Wed Jun 3 18:48:19 2026 write: IOPS=1, BW=7990KiB/s (8181kB/s)(12.0MiB/1538msec); 0 zone resets clat (msec): min=320, max=872, avg=505.21, stdev=317.82 lat (msec): min=321, max=872, avg=505.48, stdev=317.82 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 321], 50.00th=[ 321], 60.00th=[ 321], | 70.00th=[ 869], 80.00th=[ 869], 90.00th=[ 869], 95.00th=[ 869], | 99.00th=[ 869], 99.50th=[ 869], 99.90th=[ 869], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 6574, max= 8192, per=44.73%, avg=7383.00, stdev=1144.10, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=19.39%, ctx=75, 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=8914KiB/s (9128kB/s), 2229KiB/s-7520KiB/s (2282kB/s-7701kB/s), io=16.0MiB (16.8MB), run=1634-1838msec WRITE: bw=16.1MiB/s (16.9MB/s), 4457KiB/s-7990KiB/s (4564kB/s-8181kB/s), io=32.0MiB (33.6MB), run=1538-1985msec