== sanity test 398b: DIO and buffer IO race ============== 00:17:14 (1769059034) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 4.67521 s, 10.8 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=146354: Thu Jan 22 00:19:18 2026 read: IOPS=13, BW=55.7KiB/s (57.0kB/s)(5992KiB/107639msec) clat (usec): min=100, max=299470, avg=35328.71, stdev=26230.57 lat (usec): min=100, max=299470, avg=35330.32, stdev=26230.60 clat percentiles (usec): | 1.00th=[ 133], 5.00th=[ 172], 10.00th=[ 1713], 20.00th=[ 16909], | 30.00th=[ 21627], 40.00th=[ 25822], 50.00th=[ 30278], 60.00th=[ 35914], | 70.00th=[ 42730], 80.00th=[ 52691], 90.00th=[ 66847], 95.00th=[ 80217], | 99.00th=[123208], 99.50th=[147850], 99.90th=[225444], 99.95th=[299893], | 99.99th=[299893] bw ( KiB/s): min= 7, max= 111, per=25.26%, avg=55.56, stdev=20.82, samples=210 iops : min= 1, max= 27, avg=13.30, stdev= 5.26, samples=210 write: IOPS=14, BW=58.5KiB/s (59.9kB/s)(6296KiB/107639msec); 0 zone resets clat (usec): min=750, max=666344, avg=34516.07, stdev=37871.07 lat (usec): min=751, max=666346, avg=34517.74, stdev=37871.07 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1172], 10.00th=[ 1385], 20.00th=[ 3556], | 30.00th=[ 7242], 40.00th=[ 16909], 50.00th=[ 26084], 60.00th=[ 34866], | 70.00th=[ 44827], 80.00th=[ 60031], 90.00th=[ 80217], 95.00th=[ 99091], | 99.00th=[141558], 99.50th=[181404], 99.90th=[329253], 99.95th=[666895], | 99.99th=[666895] bw ( KiB/s): min= 7, max= 124, per=25.20%, avg=58.21, stdev=21.85, samples=211 iops : min= 1, max= 31, avg=13.95, stdev= 5.50, samples=211 lat (usec) : 250=4.10%, 500=0.49%, 750=0.10%, 1000=0.49% lat (msec) : 2=6.87%, 4=4.20%, 10=6.64%, 20=12.01%, 50=40.76% lat (msec) : 100=20.96%, 250=3.29%, 500=0.07%, 750=0.03% cpu : usr=0.08%, sys=5.41%, ctx=6374, 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=146356: Thu Jan 22 00:19:18 2026 read: IOPS=14, BW=56.3KiB/s (57.6kB/s)(5940KiB/105568msec) clat (usec): min=87, max=266689, avg=34237.62, stdev=24862.66 lat (usec): min=88, max=266692, avg=34242.25, stdev=24862.46 clat percentiles (usec): | 1.00th=[ 137], 5.00th=[ 169], 10.00th=[ 1237], 20.00th=[ 16909], | 30.00th=[ 21627], 40.00th=[ 25560], 50.00th=[ 29754], 60.00th=[ 34866], | 70.00th=[ 41157], 80.00th=[ 50594], 90.00th=[ 64226], 95.00th=[ 77071], | 99.00th=[113771], 99.50th=[133694], 99.90th=[210764], 99.95th=[267387], | 99.99th=[267387] bw ( KiB/s): min= 7, max= 111, per=25.44%, avg=55.96, stdev=22.43, samples=207 iops : min= 1, max= 27, avg=13.38, stdev= 5.61, samples=207 write: IOPS=15, BW=60.1KiB/s (61.6kB/s)(6348KiB/105568msec); 0 zone resets clat (usec): min=628, max=681357, avg=34242.80, stdev=38032.99 lat (usec): min=629, max=681359, avg=34246.23, stdev=38032.45 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1156], 10.00th=[ 1303], 20.00th=[ 3326], | 30.00th=[ 7570], 40.00th=[ 16188], 50.00th=[ 25297], 60.00th=[ 34341], | 70.00th=[ 44827], 80.00th=[ 58459], 90.00th=[ 79168], 95.00th=[101188], | 99.00th=[152044], 99.50th=[168821], 99.90th=[283116], 99.95th=[683672], | 99.99th=[683672] bw ( KiB/s): min= 7, max= 167, per=25.73%, avg=59.43, stdev=23.89, samples=208 iops : min= 1, max= 41, avg=14.25, stdev= 6.02, samples=208 lat (usec) : 100=0.07%, 250=3.91%, 500=0.55%, 750=0.26%, 1000=0.39% lat (msec) : 2=7.55%, 4=3.68%, 10=6.77%, 20=12.37%, 50=41.15% lat (msec) : 100=19.66%, 250=3.52%, 500=0.10%, 750=0.03% cpu : usr=0.09%, sys=5.38%, ctx=6261, 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=146357: Thu Jan 22 00:19:18 2026 read: IOPS=14, BW=56.4KiB/s (57.8kB/s)(6028KiB/106864msec) clat (usec): min=94, max=717096, avg=34843.13, stdev=32111.79 lat (usec): min=95, max=717097, avg=34845.45, stdev=32112.39 clat percentiles (usec): | 1.00th=[ 128], 5.00th=[ 167], 10.00th=[ 1029], 20.00th=[ 17171], | 30.00th=[ 21103], 40.00th=[ 25035], 50.00th=[ 29492], 60.00th=[ 34866], | 70.00th=[ 42206], 80.00th=[ 51643], 90.00th=[ 63701], 95.00th=[ 76022], | 99.00th=[115868], 99.50th=[137364], 99.90th=[404751], 99.95th=[717226], | 99.99th=[717226] bw ( KiB/s): min= 7, max= 110, per=25.62%, avg=56.36, stdev=21.60, samples=209 iops : min= 1, max= 27, avg=13.49, stdev= 5.45, samples=209 write: IOPS=14, BW=58.6KiB/s (59.0kB/s)(6260KiB/106864msec); 0 zone resets clat (usec): min=780, max=232530, avg=34495.77, stdev=34489.73 lat (usec): min=782, max=232532, avg=34498.93, stdev=34488.39 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1156], 10.00th=[ 1369], 20.00th=[ 3261], | 30.00th=[ 6980], 40.00th=[ 16188], 50.00th=[ 26084], 60.00th=[ 35390], | 70.00th=[ 46924], 80.00th=[ 59507], 90.00th=[ 81265], 95.00th=[104334], | 99.00th=[143655], 99.50th=[173016], 99.90th=[204473], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 15, max= 119, per=25.25%, avg=58.32, stdev=20.95, samples=210 iops : min= 3, max= 29, avg=13.97, stdev= 5.28, samples=210 lat (usec) : 100=0.07%, 250=3.78%, 500=0.72%, 750=0.20%, 1000=0.36% lat (msec) : 2=7.52%, 4=4.07%, 10=6.97%, 20=11.98%, 50=39.78% lat (msec) : 100=20.57%, 250=3.91%, 500=0.07%, 750=0.03% cpu : usr=0.06%, sys=5.36%, ctx=6486, 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=146359: Thu Jan 22 00:19:18 2026 read: IOPS=13, BW=55.6KiB/s (56.9kB/s)(6052KiB/108819msec) clat (usec): min=107, max=281889, avg=34951.63, stdev=26906.38 lat (usec): min=107, max=281890, avg=34954.23, stdev=26905.59 clat percentiles (usec): | 1.00th=[ 130], 5.00th=[ 167], 10.00th=[ 1270], 20.00th=[ 16319], | 30.00th=[ 20841], 40.00th=[ 25035], 50.00th=[ 29230], 60.00th=[ 35390], | 70.00th=[ 42730], 80.00th=[ 51643], 90.00th=[ 65799], 95.00th=[ 81265], | 99.00th=[125305], 99.50th=[149947], 99.90th=[212861], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 7, max= 142, per=25.23%, avg=55.50, stdev=22.46, samples=213 iops : min= 1, max= 35, avg=13.27, stdev= 5.66, samples=213 write: IOPS=14, BW=57.3KiB/s (58.7kB/s)(6236KiB/108819msec); 0 zone resets clat (usec): min=730, max=790467, avg=35609.74, stdev=40081.23 lat (usec): min=731, max=790469, avg=35614.25, stdev=40081.21 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1172], 10.00th=[ 1385], 20.00th=[ 3621], | 30.00th=[ 7111], 40.00th=[ 17433], 50.00th=[ 26346], 60.00th=[ 35390], | 70.00th=[ 47449], 80.00th=[ 62129], 90.00th=[ 83362], 95.00th=[102237], | 99.00th=[147850], 99.50th=[173016], 99.90th=[283116], 99.95th=[792724], | 99.99th=[792724] bw ( KiB/s): min= 7, max= 164, per=24.72%, avg=57.11, stdev=21.92, samples=213 iops : min= 1, max= 41, avg=13.68, stdev= 5.50, samples=213 lat (usec) : 250=4.04%, 500=0.46%, 750=0.20%, 1000=0.55% lat (msec) : 2=6.90%, 4=4.10%, 10=6.54%, 20=12.47%, 50=39.62% lat (msec) : 100=21.00%, 250=4.04%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=5.47%, ctx=6479, 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=221KiB/s (226kB/s), 55.6KiB/s-56.4KiB/s (56.9kB/s-57.8kB/s), io=23.4MiB (24.6MB), run=105568-108819msec WRITE: bw=231KiB/s (237kB/s), 57.3KiB/s-60.1KiB/s (58.7kB/s-61.6kB/s), io=24.6MiB (25.7MB), run=105568-108819msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146355: Thu Jan 22 00:21:17 2026 read: IOPS=6, BW=26.3KiB/s (26.0kB/s)(5992KiB/227530msec) clat (msec): min=5, max=776, avg=32.45, stdev=37.15 lat (msec): min=5, max=776, avg=32.45, stdev=37.15 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 35], 80.00th=[ 46], 90.00th=[ 66], 95.00th=[ 87], | 99.00th=[ 155], 99.50th=[ 190], 99.90th=[ 464], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 103, per=27.17%, avg=28.53, stdev=19.12, samples=408 iops : min= 1, max= 25, avg= 6.52, stdev= 4.82, samples=408 write: IOPS=6, BW=27.7KiB/s (28.3kB/s)(6296KiB/227530msec); 0 zone resets clat (msec): min=30, max=424, avg=113.42, stdev=53.10 lat (msec): min=30, max=424, avg=113.43, stdev=53.09 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 71], | 30.00th=[ 80], 40.00th=[ 90], 50.00th=[ 100], 60.00th=[ 113], | 70.00th=[ 130], 80.00th=[ 150], 90.00th=[ 190], 95.00th=[ 218], | 99.00th=[ 275], 99.50th=[ 326], 99.90th=[ 414], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 7, max= 64, per=24.80%, avg=27.28, stdev=11.76, samples=447 iops : min= 1, max= 16, avg= 6.21, stdev= 3.02, samples=447 lat (msec) : 10=5.11%, 20=17.48%, 50=19.63%, 100=30.73%, 250=25.94% lat (msec) : 500=1.07%, 1000=0.03% cpu : usr=0.06%, sys=1.40%, ctx=5696, 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=146358: Thu Jan 22 00:21:17 2026 read: IOPS=6, BW=26.2KiB/s (26.8kB/s)(5940KiB/226982msec) clat (msec): min=4, max=703, avg=32.49, stdev=35.67 lat (msec): min=4, max=703, avg=32.49, stdev=35.67 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 35], 80.00th=[ 45], 90.00th=[ 65], 95.00th=[ 92], | 99.00th=[ 159], 99.50th=[ 226], 99.90th=[ 317], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 104, per=26.98%, avg=28.32, stdev=18.12, samples=407 iops : min= 1, max= 26, avg= 6.47, stdev= 4.58, samples=407 write: IOPS=6, BW=27.0KiB/s (28.6kB/s)(6348KiB/226982msec); 0 zone resets clat (msec): min=33, max=398, avg=112.39, stdev=52.05 lat (msec): min=33, max=398, avg=112.39, stdev=52.05 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 54], 10.00th=[ 62], 20.00th=[ 71], | 30.00th=[ 83], 40.00th=[ 90], 50.00th=[ 100], 60.00th=[ 111], | 70.00th=[ 125], 80.00th=[ 146], 90.00th=[ 182], 95.00th=[ 220], | 99.00th=[ 288], 99.50th=[ 338], 99.90th=[ 393], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 7, max= 56, per=25.08%, avg=27.59, stdev=11.84, samples=446 iops : min= 1, max= 14, avg= 6.28, stdev= 3.03, samples=446 lat (msec) : 10=5.27%, 20=16.99%, 50=19.56%, 100=30.66%, 250=26.24% lat (msec) : 500=1.24%, 750=0.03% cpu : usr=0.04%, sys=1.33%, ctx=5367, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146360: Thu Jan 22 00:21:17 2026 read: IOPS=6, BW=26.7KiB/s (27.4kB/s)(6028KiB/225493msec) clat (msec): min=4, max=344, avg=32.73, stdev=31.75 lat (msec): min=4, max=344, avg=32.73, stdev=31.75 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 23], 60.00th=[ 29], | 70.00th=[ 35], 80.00th=[ 47], 90.00th=[ 65], 95.00th=[ 87], | 99.00th=[ 144], 99.50th=[ 234], 99.90th=[ 296], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 7, max= 95, per=26.98%, avg=28.32, stdev=18.30, samples=413 iops : min= 1, max= 23, avg= 6.47, stdev= 4.63, samples=413 write: IOPS=6, BW=27.8KiB/s (28.4kB/s)(6260KiB/225493msec); 0 zone resets clat (msec): min=33, max=768, avg=112.34, stdev=55.91 lat (msec): min=33, max=768, avg=112.34, stdev=55.91 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 53], 10.00th=[ 59], 20.00th=[ 70], | 30.00th=[ 80], 40.00th=[ 88], 50.00th=[ 100], 60.00th=[ 111], | 70.00th=[ 127], 80.00th=[ 150], 90.00th=[ 182], 95.00th=[ 213], | 99.00th=[ 284], 99.50th=[ 338], 99.90th=[ 550], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 62, per=24.78%, avg=27.26, stdev=12.10, samples=445 iops : min= 1, max= 15, avg= 6.20, stdev= 3.11, samples=445 lat (msec) : 10=4.75%, 20=16.63%, 50=20.54%, 100=31.22%, 250=25.36% lat (msec) : 500=1.43%, 750=0.03%, 1000=0.03% cpu : usr=0.05%, sys=1.38%, ctx=5547, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146361: Thu Jan 22 00:21:17 2026 read: IOPS=6, BW=26.9KiB/s (27.6kB/s)(6052KiB/224812msec) clat (msec): min=4, max=460, avg=32.08, stdev=32.02 lat (msec): min=4, max=460, avg=32.08, stdev=32.02 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 13], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 22], 60.00th=[ 27], | 70.00th=[ 34], 80.00th=[ 46], 90.00th=[ 68], 95.00th=[ 84], | 99.00th=[ 148], 99.50th=[ 190], 99.90th=[ 321], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 7, max= 96, per=27.56%, avg=28.94, stdev=19.30, samples=406 iops : min= 1, max= 24, avg= 6.62, stdev= 4.89, samples=406 write: IOPS=6, BW=27.7KiB/s (28.4kB/s)(6236KiB/224812msec); 0 zone resets clat (msec): min=34, max=773, avg=112.83, stdev=54.93 lat (msec): min=34, max=773, avg=112.83, stdev=54.93 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 55], 10.00th=[ 62], 20.00th=[ 71], | 30.00th=[ 81], 40.00th=[ 89], 50.00th=[ 100], 60.00th=[ 111], | 70.00th=[ 127], 80.00th=[ 148], 90.00th=[ 188], 95.00th=[ 215], | 99.00th=[ 279], 99.50th=[ 317], 99.90th=[ 510], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 56, per=25.04%, avg=27.55, stdev=11.61, samples=438 iops : min= 1, max= 14, avg= 6.27, stdev= 2.97, samples=438 lat (msec) : 10=5.18%, 20=18.13%, 50=18.52%, 100=31.90%, 250=25.00% lat (msec) : 500=1.20%, 750=0.03%, 1000=0.03% cpu : usr=0.05%, sys=1.39%, ctx=5482, 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=106KiB/s (108kB/s), 26.2KiB/s-26.9KiB/s (26.8kB/s-27.6kB/s), io=23.4MiB (24.6MB), run=224812-227530msec WRITE: bw=110KiB/s (113kB/s), 27.7KiB/s-27.0KiB/s (28.3kB/s-28.6kB/s), io=24.6MiB (25.7MB), run=224812-227530msec 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=146409: Thu Jan 22 00:21:49 2026 read: IOPS=17, BW=287KiB/s (293kB/s)(5920KiB/20661msec) clat (usec): min=84, max=127565, avg=28386.42, stdev=22266.82 lat (usec): min=84, max=127566, avg=28395.75, stdev=22257.61 clat percentiles (usec): | 1.00th=[ 102], 5.00th=[ 149], 10.00th=[ 169], 20.00th=[ 388], | 30.00th=[ 17433], 40.00th=[ 22676], 50.00th=[ 28443], 60.00th=[ 33162], | 70.00th=[ 38011], 80.00th=[ 45351], 90.00th=[ 55837], 95.00th=[ 67634], | 99.00th=[ 99091], 99.50th=[113771], 99.90th=[127402], 99.95th=[127402], | 99.99th=[127402] bw ( KiB/s): min= 126, max= 512, per=26.48%, avg=286.47, stdev=90.91, samples=40 iops : min= 7, max= 32, avg=17.18, stdev= 5.79, samples=40 write: IOPS=19, BW=308KiB/s (316kB/s)(6368KiB/20661msec); 0 zone resets clat (usec): min=1059, max=199890, avg=25098.51, stdev=26537.54 lat (usec): min=1061, max=199893, avg=25106.57, stdev=26534.17 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1729], 10.00th=[ 2442], 20.00th=[ 4080], | 30.00th=[ 5997], 40.00th=[ 8717], 50.00th=[ 17433], 60.00th=[ 22414], | 70.00th=[ 33162], 80.00th=[ 44303], 90.00th=[ 60031], 95.00th=[ 76022], | 99.00th=[139461], 99.50th=[160433], 99.90th=[200279], 99.95th=[200279], | 99.99th=[200279] bw ( KiB/s): min= 31, max= 541, per=27.19%, avg=309.75, stdev=111.52, samples=40 iops : min= 1, max= 33, avg=18.62, stdev= 7.04, samples=40 lat (usec) : 100=0.39%, 250=7.68%, 500=1.95%, 750=0.26%, 1000=0.52% lat (msec) : 2=3.65%, 4=7.03%, 10=11.98%, 20=12.24%, 50=38.67% lat (msec) : 100=14.58%, 250=1.04% cpu : usr=0.10%, sys=7.27%, ctx=1480, 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=146410: Thu Jan 22 00:21:49 2026 read: IOPS=16, BW=260KiB/s (266kB/s)(5744KiB/22117msec) clat (usec): min=109, max=139407, avg=30448.97, stdev=21831.21 lat (usec): min=109, max=139409, avg=30450.10, stdev=21831.23 clat percentiles (usec): | 1.00th=[ 120], 5.00th=[ 155], 10.00th=[ 182], 20.00th=[ 14091], | 30.00th=[ 20055], 40.00th=[ 24249], 50.00th=[ 28443], 60.00th=[ 33424], | 70.00th=[ 40109], 80.00th=[ 46924], 90.00th=[ 57934], 95.00th=[ 66323], | 99.00th=[ 99091], 99.50th=[112722], 99.90th=[139461], 99.95th=[139461], | 99.99th=[139461] bw ( KiB/s): min= 27, max= 478, per=23.92%, avg=258.77, stdev=106.46, samples=43 iops : min= 1, max= 29, avg=15.44, stdev= 6.73, samples=43 write: IOPS=18, BW=296KiB/s (303kB/s)(6544KiB/22117msec); 0 zone resets clat (usec): min=1256, max=225579, avg=27164.54, stdev=32639.73 lat (usec): min=1257, max=225582, avg=27166.59, stdev=32639.74 clat percentiles (usec): | 1.00th=[ 1401], 5.00th=[ 1631], 10.00th=[ 1795], 20.00th=[ 3294], | 30.00th=[ 5473], 40.00th=[ 7963], 50.00th=[ 14746], 60.00th=[ 25822], | 70.00th=[ 32637], 80.00th=[ 47449], 90.00th=[ 66323], 95.00th=[ 84411], | 99.00th=[166724], 99.50th=[175113], 99.90th=[225444], 99.95th=[225444], | 99.99th=[225444] bw ( KiB/s): min= 63, max= 500, per=25.73%, avg=293.02, stdev=113.73, samples=43 iops : min= 3, max= 31, avg=17.60, stdev= 7.24, samples=43 lat (usec) : 250=5.99%, 500=1.17%, 750=0.39%, 1000=0.52% lat (msec) : 2=6.25%, 4=6.77%, 10=11.07%, 20=10.55%, 50=39.97% lat (msec) : 100=15.23%, 250=2.08% cpu : usr=0.11%, sys=7.02%, ctx=1532, 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=146411: Thu Jan 22 00:21:49 2026 read: IOPS=17, BW=287KiB/s (293kB/s)(6256KiB/21829msec) clat (usec): min=111, max=116810, avg=28633.07, stdev=21475.20 lat (usec): min=112, max=116811, avg=28634.39, stdev=21475.18 clat percentiles (usec): | 1.00th=[ 119], 5.00th=[ 159], 10.00th=[ 188], 20.00th=[ 8586], | 30.00th=[ 19268], 40.00th=[ 23200], 50.00th=[ 26084], 60.00th=[ 31327], | 70.00th=[ 36963], 80.00th=[ 44303], 90.00th=[ 54264], 95.00th=[ 67634], | 99.00th=[ 93848], 99.50th=[112722], 99.90th=[116917], 99.95th=[116917], | 99.99th=[116917] bw ( KiB/s): min= 110, max= 480, per=26.81%, avg=290.10, stdev=96.72, samples=42 iops : min= 6, max= 30, avg=17.38, stdev= 6.14, samples=42 write: IOPS=17, BW=276KiB/s (283kB/s)(6032KiB/21829msec); 0 zone resets clat (usec): min=1228, max=223766, avg=27652.49, stdev=31009.70 lat (usec): min=1229, max=223767, avg=27656.16, stdev=31008.57 clat percentiles (usec): | 1.00th=[ 1483], 5.00th=[ 1663], 10.00th=[ 2343], 20.00th=[ 3851], | 30.00th=[ 6194], 40.00th=[ 9372], 50.00th=[ 15795], 60.00th=[ 23462], | 70.00th=[ 37487], 80.00th=[ 49021], 90.00th=[ 66323], 95.00th=[ 87557], | 99.00th=[152044], 99.50th=[160433], 99.90th=[223347], 99.95th=[223347], | 99.99th=[223347] bw ( KiB/s): min= 95, max= 476, per=24.19%, avg=275.48, stdev=84.91, samples=42 iops : min= 5, max= 29, avg=16.48, stdev= 5.43, samples=42 lat (usec) : 250=7.03%, 500=0.91%, 750=0.52%, 1000=0.26% lat (msec) : 2=4.95%, 4=6.25%, 10=10.55%, 20=12.63%, 50=40.89% lat (msec) : 100=14.06%, 250=1.95% cpu : usr=0.13%, sys=7.15%, ctx=1546, 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=146412: Thu Jan 22 00:21:49 2026 read: IOPS=17, BW=277KiB/s (284kB/s)(6032KiB/21739msec) clat (usec): min=103, max=184826, avg=27888.92, stdev=24245.73 lat (usec): min=104, max=184827, avg=27890.79, stdev=24246.48 clat percentiles (usec): | 1.00th=[ 116], 5.00th=[ 149], 10.00th=[ 174], 20.00th=[ 318], | 30.00th=[ 16319], 40.00th=[ 20579], 50.00th=[ 26346], 60.00th=[ 31327], | 70.00th=[ 36439], 80.00th=[ 44303], 90.00th=[ 55313], 95.00th=[ 66847], | 99.00th=[110625], 99.50th=[132645], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 55, max= 608, per=25.66%, avg=277.60, stdev=113.78, samples=42 iops : min= 3, max= 38, avg=16.62, stdev= 7.22, samples=42 write: IOPS=17, BW=288KiB/s (295kB/s)(6256KiB/21739msec); 0 zone resets clat (usec): min=1022, max=219702, avg=27988.28, stdev=31147.49 lat (usec): min=1023, max=219704, avg=27990.23, stdev=31147.57 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1647], 10.00th=[ 2245], 20.00th=[ 4113], | 30.00th=[ 6783], 40.00th=[ 9634], 50.00th=[ 17433], 60.00th=[ 25822], | 70.00th=[ 36439], 80.00th=[ 46924], 90.00th=[ 65799], 95.00th=[ 84411], | 99.00th=[152044], 99.50th=[170918], 99.90th=[219153], 99.95th=[219153], | 99.99th=[219153] bw ( KiB/s): min= 90, max= 500, per=25.27%, avg=287.86, stdev=111.43, samples=42 iops : min= 5, max= 31, avg=17.26, stdev= 7.03, samples=42 lat (usec) : 250=8.46%, 500=2.60%, 750=0.39%, 1000=0.13% lat (msec) : 2=4.56%, 4=6.38%, 10=11.59%, 20=11.33%, 50=37.89% lat (msec) : 100=14.32%, 250=2.34% cpu : usr=0.08%, sys=6.94%, ctx=1527, 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=1083KiB/s (1109kB/s), 260KiB/s-287KiB/s (266kB/s-293kB/s), io=23.4MiB (24.5MB), run=20661-22117msec WRITE: bw=1139KiB/s (1167kB/s), 276KiB/s-308KiB/s (283kB/s-316kB/s), io=24.6MiB (25.8MB), run=20661-22117msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146404: Thu Jan 22 00:22:21 2026 read: IOPS=6, BW=109KiB/s (112kB/s)(5920KiB/54221msec) clat (msec): min=5, max=252, avg=30.72, stdev=30.51 lat (msec): min=5, max=252, avg=30.72, stdev=30.51 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 10], 20.00th=[ 14], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 21], 60.00th=[ 25], | 70.00th=[ 31], 80.00th=[ 42], 90.00th=[ 57], 95.00th=[ 90], | 99.00th=[ 178], 99.50th=[ 213], 99.90th=[ 253], 99.95th=[ 253], | 99.99th=[ 253] bw ( KiB/s): min= 31, max= 380, per=26.41%, avg=115.43, stdev=68.52, samples=101 iops : min= 1, max= 23, avg= 6.44, stdev= 4.31, samples=101 write: IOPS=7, BW=117KiB/s (120kB/s)(6368KiB/54221msec); 0 zone resets clat (msec): min=44, max=293, avg=106.99, stdev=45.11 lat (msec): min=44, max=293, avg=106.99, stdev=45.11 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 55], 10.00th=[ 61], 20.00th=[ 70], | 30.00th=[ 78], 40.00th=[ 88], 50.00th=[ 97], 60.00th=[ 107], | 70.00th=[ 120], 80.00th=[ 140], 90.00th=[ 163], 95.00th=[ 203], | 99.00th=[ 268], 99.50th=[ 284], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 296] bw ( KiB/s): min= 21, max= 192, per=25.52%, avg=117.41, stdev=45.54, samples=107 iops : min= 1, max= 12, avg= 6.57, stdev= 2.91, samples=107 lat (msec) : 10=4.82%, 20=18.36%, 50=19.14%, 100=31.64%, 250=25.26% lat (msec) : 500=0.78% cpu : usr=0.04%, sys=1.65%, ctx=1461, 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=146405: Thu Jan 22 00:22:21 2026 read: IOPS=6, BW=105KiB/s (108kB/s)(5744KiB/54697msec) clat (msec): min=6, max=255, avg=30.67, stdev=29.78 lat (msec): min=6, max=255, avg=30.67, stdev=29.78 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 13], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 22], 60.00th=[ 26], | 70.00th=[ 29], 80.00th=[ 40], 90.00th=[ 64], 95.00th=[ 88], | 99.00th=[ 171], 99.50th=[ 190], 99.90th=[ 255], 99.95th=[ 255], | 99.99th=[ 255] bw ( KiB/s): min= 30, max= 380, per=25.20%, avg=110.14, stdev=67.05, samples=103 iops : min= 1, max= 23, avg= 6.12, stdev= 4.25, samples=103 write: IOPS=7, BW=120KiB/s (123kB/s)(6544KiB/54697msec); 0 zone resets clat (msec): min=39, max=282, avg=106.68, stdev=42.51 lat (msec): min=39, max=282, avg=106.68, stdev=42.51 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 54], 10.00th=[ 61], 20.00th=[ 71], | 30.00th=[ 80], 40.00th=[ 88], 50.00th=[ 99], 60.00th=[ 107], | 70.00th=[ 122], 80.00th=[ 140], 90.00th=[ 169], 95.00th=[ 192], | 99.00th=[ 239], 99.50th=[ 241], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 31, max= 254, per=25.91%, avg=119.18, stdev=47.72, samples=108 iops : min= 1, max= 15, avg= 6.68, stdev= 3.00, samples=108 lat (msec) : 10=4.43%, 20=17.06%, 50=19.40%, 100=32.16%, 250=26.56% lat (msec) : 500=0.39% cpu : usr=0.05%, sys=1.56%, ctx=1394, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146406: Thu Jan 22 00:22:21 2026 read: IOPS=7, BW=119KiB/s (122kB/s)(6256KiB/52666msec) clat (msec): min=6, max=325, avg=29.17, stdev=28.75 lat (msec): min=6, max=325, avg=29.17, stdev=28.75 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 15], 40.00th=[ 18], 50.00th=[ 20], 60.00th=[ 24], | 70.00th=[ 28], 80.00th=[ 36], 90.00th=[ 63], 95.00th=[ 88], | 99.00th=[ 132], 99.50th=[ 140], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 443, per=28.22%, avg=123.33, stdev=87.02, samples=100 iops : min= 1, max= 27, avg= 6.96, stdev= 5.49, samples=100 write: IOPS=7, BW=115KiB/s (117kB/s)(6032KiB/52666msec); 0 zone resets clat (msec): min=38, max=326, avg=109.17, stdev=45.62 lat (msec): min=38, max=326, avg=109.18, stdev=45.62 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 55], 10.00th=[ 61], 20.00th=[ 71], | 30.00th=[ 82], 40.00th=[ 89], 50.00th=[ 101], 60.00th=[ 111], | 70.00th=[ 127], 80.00th=[ 144], 90.00th=[ 167], 95.00th=[ 201], | 99.00th=[ 259], 99.50th=[ 288], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 31, max= 223, per=25.05%, avg=115.22, stdev=43.18, samples=103 iops : min= 1, max= 13, avg= 6.44, stdev= 2.72, samples=103 lat (msec) : 10=4.17%, 20=22.27%, 50=19.14%, 100=27.34%, 250=26.43% lat (msec) : 500=0.65% cpu : usr=0.05%, sys=1.67%, ctx=1496, 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=146407: Thu Jan 22 00:22:21 2026 read: IOPS=7, BW=114KiB/s (116kB/s)(6032KiB/53123msec) clat (msec): min=6, max=330, avg=30.48, stdev=28.95 lat (msec): min=6, max=330, avg=30.48, stdev=28.95 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 16], 40.00th=[ 19], 50.00th=[ 21], 60.00th=[ 26], | 70.00th=[ 31], 80.00th=[ 41], 90.00th=[ 62], 95.00th=[ 85], | 99.00th=[ 134], 99.50th=[ 138], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 30, max= 381, per=26.43%, avg=115.50, stdev=71.55, samples=101 iops : min= 1, max= 23, avg= 6.47, stdev= 4.48, samples=101 write: IOPS=7, BW=118KiB/s (121kB/s)(6256KiB/53123msec); 0 zone resets clat (msec): min=35, max=365, avg=106.16, stdev=44.75 lat (msec): min=35, max=365, avg=106.17, stdev=44.75 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 53], 10.00th=[ 59], 20.00th=[ 69], | 30.00th=[ 81], 40.00th=[ 89], 50.00th=[ 99], 60.00th=[ 109], | 70.00th=[ 121], 80.00th=[ 133], 90.00th=[ 169], 95.00th=[ 188], | 99.00th=[ 264], 99.50th=[ 321], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 31, max= 253, per=25.47%, avg=117.15, stdev=45.29, samples=104 iops : min= 1, max= 15, avg= 6.56, stdev= 2.88, samples=104 lat (msec) : 10=3.52%, 20=19.53%, 50=20.70%, 100=30.60%, 250=25.00% lat (msec) : 500=0.65% cpu : usr=0.08%, sys=1.68%, ctx=1416, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=438KiB/s (448kB/s), 105KiB/s-119KiB/s (108kB/s-122kB/s), io=23.4MiB (24.5MB), run=52666-54697msec WRITE: bw=461KiB/s (472kB/s), 115KiB/s-120KiB/s (117kB/s-123kB/s), io=24.6MiB (25.8MB), run=52666-54697msec 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=146432: Thu Jan 22 00:22:35 2026 read: IOPS=1, BW=1471KiB/s (1506kB/s)(7168KiB/4873msec) clat (msec): min=113, max=2359, avg=484.00, stdev=828.14 lat (msec): min=113, max=2359, avg=484.01, stdev=828.14 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 134], | 30.00th=[ 146], 40.00th=[ 146], 50.00th=[ 190], 60.00th=[ 194], | 70.00th=[ 194], 80.00th=[ 251], 90.00th=[ 2366], 95.00th=[ 2366], | 99.00th=[ 2366], 99.50th=[ 2366], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 2015, max= 4087, per=84.16%, avg=3049.00, stdev=1180.22, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1051KiB/s (1076kB/s)(5120KiB/4873msec); 0 zone resets clat (msec): min=166, max=602, avg=289.71, stdev=180.57 lat (msec): min=166, max=602, avg=289.80, stdev=180.59 clat percentiles (msec): | 1.00th=[ 167], 5.00th=[ 167], 10.00th=[ 167], 20.00th=[ 167], | 30.00th=[ 184], 40.00th=[ 184], 50.00th=[ 213], 60.00th=[ 213], | 70.00th=[ 284], 80.00th=[ 284], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] bw ( KiB/s): min= 2015, max= 4039, per=53.11%, avg=2693.67, stdev=1165.11, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 250=66.67%, 500=16.67%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=11.25%, ctx=650, 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=146433: Thu Jan 22 00:22:35 2026 read: IOPS=0, BW=362KiB/s (371kB/s)(2048KiB/5652msec) clat (msec): min=165, max=460, avg=313.27, stdev=208.86 lat (msec): min=165, max=460, avg=313.28, stdev=208.86 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 165], 10.00th=[ 165], 20.00th=[ 165], | 30.00th=[ 165], 40.00th=[ 165], 50.00th=[ 165], 60.00th=[ 460], | 70.00th=[ 460], 80.00th=[ 460], 90.00th=[ 460], 95.00th=[ 460], | 99.00th=[ 460], 99.50th=[ 460], 99.90th=[ 460], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 1980, max= 2031, per=55.35%, avg=2005.50, stdev=36.06, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1812KiB/s (1855kB/s)(10.0MiB/5652msec); 0 zone resets clat (msec): min=85, max=2462, avg=479.90, stdev=773.11 lat (msec): min=85, max=2463, avg=480.01, stdev=773.16 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 86], 10.00th=[ 86], 20.00th=[ 90], | 30.00th=[ 122], 40.00th=[ 130], 50.00th=[ 138], 60.00th=[ 140], | 70.00th=[ 157], 80.00th=[ 284], 90.00th=[ 1200], 95.00th=[ 2467], | 99.00th=[ 2467], 99.50th=[ 2467], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 2031, max= 6131, per=72.11%, avg=3657.40, stdev=1708.86, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (msec) : 100=16.67%, 250=50.00%, 500=16.67%, 2000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=9.77%, ctx=157, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146434: Thu Jan 22 00:22:35 2026 read: IOPS=1, BW=1182KiB/s (1210kB/s)(6144KiB/5199msec) clat (usec): min=898, max=210826, avg=91518.84, stdev=103770.71 lat (usec): min=900, max=210827, avg=91519.98, stdev=103770.46 clat percentiles (usec): | 1.00th=[ 898], 5.00th=[ 898], 10.00th=[ 898], 20.00th=[ 1106], | 30.00th=[ 1106], 40.00th=[ 1500], 50.00th=[ 1500], 60.00th=[125305], | 70.00th=[210764], 80.00th=[210764], 90.00th=[210764], 95.00th=[210764], | 99.00th=[210764], 99.50th=[210764], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 4063, max= 4079, per=100.00%, avg=4071.00, stdev=11.31, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1182KiB/s (1210kB/s)(6144KiB/5199msec); 0 zone resets clat (msec): min=178, max=3140, avg=765.88, stdev=1168.21 lat (msec): min=178, max=3140, avg=765.94, stdev=1168.22 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 180], 10.00th=[ 180], 20.00th=[ 232], | 30.00th=[ 232], 40.00th=[ 241], 50.00th=[ 241], 60.00th=[ 317], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 3138], 95.00th=[ 3138], | 99.00th=[ 3138], 99.50th=[ 3138], 99.90th=[ 3138], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min= 2031, max= 2934, per=46.03%, avg=2334.67, stdev=519.05, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (usec) : 1000=8.33% lat (msec) : 2=16.67%, 250=50.00%, 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=9.60%, ctx=124, 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=146436: Thu Jan 22 00:22:35 2026 read: IOPS=1, BW=1069KiB/s (1095kB/s)(5120KiB/4788msec) clat (usec): min=661, max=253751, avg=161102.14, stdev=101352.50 lat (usec): min=661, max=253753, avg=161103.33, stdev=101352.76 clat percentiles (usec): | 1.00th=[ 660], 5.00th=[ 660], 10.00th=[ 660], 20.00th=[ 660], | 30.00th=[154141], 40.00th=[154141], 50.00th=[154141], 60.00th=[154141], | 70.00th=[242222], 80.00th=[242222], 90.00th=[252707], 95.00th=[252707], | 99.00th=[252707], 99.50th=[252707], 99.90th=[252707], 99.95th=[252707], | 99.99th=[252707] bw ( KiB/s): min= 2031, max= 4031, per=74.53%, avg=2700.33, stdev=1152.40, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1497KiB/s (1533kB/s)(7168KiB/4788msec); 0 zone resets clat (msec): min=124, max=2507, avg=547.53, stdev=870.24 lat (msec): min=124, max=2507, avg=547.63, stdev=870.24 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 125], 10.00th=[ 125], 20.00th=[ 138], | 30.00th=[ 153], 40.00th=[ 153], 50.00th=[ 241], 60.00th=[ 245], | 70.00th=[ 245], 80.00th=[ 426], 90.00th=[ 2500], 95.00th=[ 2500], | 99.00th=[ 2500], 99.50th=[ 2500], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 1469, max= 6095, per=67.40%, avg=3418.50, stdev=2107.58, samples=4 iops : min= 1, max= 5, avg= 2.50, stdev= 1.91, samples=4 lat (usec) : 750=8.33% lat (msec) : 250=66.67%, 500=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=10.86%, ctx=149, 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=3623KiB/s (3710kB/s), 362KiB/s-1471KiB/s (371kB/s-1506kB/s), io=20.0MiB (20.0MB), run=4788-5652msec WRITE: bw=5073KiB/s (5195kB/s), 1051KiB/s-1812KiB/s (1076kB/s-1855kB/s), io=28.0MiB (29.4MB), run=4788-5652msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146431: Thu Jan 22 00:22:36 2026 read: IOPS=1, BW=1125KiB/s (1152kB/s)(7168KiB/6372msec) clat (msec): min=50, max=2279, avg=712.92, stdev=883.65 lat (msec): min=50, max=2279, avg=712.92, stdev=883.65 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 51], 10.00th=[ 51], 20.00th=[ 62], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 284], 60.00th=[ 527], | 70.00th=[ 527], 80.00th=[ 1636], 90.00th=[ 2265], 95.00th=[ 2265], | 99.00th=[ 2265], 99.50th=[ 2265], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 1984, max= 4039, per=75.57%, avg=2428.80, stdev=900.47, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 write: IOPS=0, BW=804KiB/s (823kB/s)(5120KiB/6372msec); 0 zone resets clat (msec): min=95, max=725, avg=244.95, stdev=269.97 lat (msec): min=96, max=725, avg=245.04, stdev=269.97 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 96], 10.00th=[ 96], 20.00th=[ 96], | 30.00th=[ 105], 40.00th=[ 105], 50.00th=[ 138], 60.00th=[ 138], | 70.00th=[ 161], 80.00th=[ 161], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 2019, max= 6059, per=89.78%, avg=4039.00, stdev=2856.71, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 lat (msec) : 100=25.00%, 250=33.33%, 500=8.33%, 750=16.67%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.04%, ctx=72, 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=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=146435: Thu Jan 22 00:22:36 2026 read: IOPS=0, BW=333KiB/s (341kB/s)(2048KiB/6143msec) clat (msec): min=199, max=280, avg=240.38, stdev=57.18 lat (msec): min=199, max=280, avg=240.38, stdev=57.18 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 279], | 70.00th=[ 279], 80.00th=[ 279], 90.00th=[ 279], 95.00th=[ 279], | 99.00th=[ 279], 99.50th=[ 279], 99.90th=[ 279], 99.95th=[ 279], | 99.99th=[ 279] bw ( KiB/s): min= 1471, max= 2019, per=54.29%, avg=1745.00, stdev=387.49, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1667KiB/s (1707kB/s)(10.0MiB/6143msec); 0 zone resets clat (msec): min=146, max=2702, avg=545.85, stdev=787.62 lat (msec): min=146, max=2702, avg=546.07, stdev=787.67 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 146], 10.00th=[ 146], 20.00th=[ 148], | 30.00th=[ 171], 40.00th=[ 180], 50.00th=[ 203], 60.00th=[ 275], | 70.00th=[ 284], 80.00th=[ 523], 90.00th=[ 827], 95.00th=[ 2702], | 99.00th=[ 2702], 99.50th=[ 2702], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 1943, max= 4087, per=62.48%, avg=2811.20, stdev=1111.70, samples=5 iops : min= 1, max= 3, avg= 1.80, stdev= 1.10, samples=5 lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=3.04%, ctx=79, 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=146437: Thu Jan 22 00:22:36 2026 read: IOPS=1, BW=1081KiB/s (1106kB/s)(6144KiB/5686msec) clat (msec): min=62, max=917, avg=284.14, stdev=319.26 lat (msec): min=62, max=917, avg=284.14, stdev=319.26 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 112], | 30.00th=[ 112], 40.00th=[ 132], 50.00th=[ 132], 60.00th=[ 205], | 70.00th=[ 275], 80.00th=[ 275], 90.00th=[ 919], 95.00th=[ 919], | 99.00th=[ 919], 99.50th=[ 919], 99.90th=[ 919], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 2019, max= 4079, per=84.43%, avg=2713.67, stdev=1182.47, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1081KiB/s (1106kB/s)(6144KiB/5686msec); 0 zone resets clat (msec): min=109, max=2721, avg=648.74, stdev=1017.78 lat (msec): min=110, max=2721, avg=648.91, stdev=1017.75 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 110], 10.00th=[ 110], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 292], | 70.00th=[ 305], 80.00th=[ 305], 90.00th=[ 2735], 95.00th=[ 2735], | 99.00th=[ 2735], 99.50th=[ 2735], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 2039, max= 2745, per=50.58%, avg=2275.67, stdev=406.46, samples=3 iops : min= 1, max= 2, avg= 1.33, stdev= 0.58, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 1000=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.92%, ctx=62, 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=146438: Thu Jan 22 00:22:36 2026 read: IOPS=0, BW=829KiB/s (849kB/s)(5120KiB/6176msec) clat (msec): min=70, max=653, avg=369.09, stdev=242.75 lat (msec): min=70, max=653, avg=369.09, stdev=242.75 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 70], 10.00th=[ 70], 20.00th=[ 70], | 30.00th=[ 167], 40.00th=[ 167], 50.00th=[ 460], 60.00th=[ 460], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 651], 95.00th=[ 651], | 99.00th=[ 651], 99.50th=[ 651], 99.90th=[ 651], 99.95th=[ 651], | 99.99th=[ 651] bw ( KiB/s): min= 2019, max= 3968, per=83.20%, avg=2674.00, stdev=1120.67, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=1, BW=1161KiB/s (1188kB/s)(7168KiB/6176msec); 0 zone resets clat (msec): min=122, max=2876, avg=591.49, stdev=1011.64 lat (msec): min=122, max=2877, avg=591.59, stdev=1011.64 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 128], | 30.00th=[ 161], 40.00th=[ 161], 50.00th=[ 205], 60.00th=[ 279], | 70.00th=[ 279], 80.00th=[ 368], 90.00th=[ 2869], 95.00th=[ 2869], | 99.00th=[ 2869], 99.50th=[ 2869], 99.90th=[ 2869], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 1521, max= 4079, per=56.63%, avg=2547.67, stdev=1351.61, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 100=8.33%, 250=41.67%, 500=33.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=2.56%, ctx=81, 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=3214KiB/s (3291kB/s), 333KiB/s-1125KiB/s (341kB/s-1152kB/s), io=20.0MiB (20.0MB), run=5686-6372msec WRITE: bw=4500KiB/s (4608kB/s), 804KiB/s-1667KiB/s (823kB/s-1707kB/s), io=28.0MiB (29.4MB), run=5686-6372msec 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=146444: Thu Jan 22 00:22:46 2026 read: IOPS=1, BW=5678KiB/s (5815kB/s)(12.0MiB/2164msec) clat (msec): min=611, max=711, avg=657.35, stdev=50.43 lat (msec): min=611, max=711, avg=657.36, stdev=50.43 clat percentiles (msec): | 1.00th=[ 609], 5.00th=[ 609], 10.00th=[ 609], 20.00th=[ 609], | 30.00th=[ 609], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 651], | 70.00th=[ 709], 80.00th=[ 709], 90.00th=[ 709], 95.00th=[ 709], | 99.00th=[ 709], 99.50th=[ 709], 99.90th=[ 709], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7757, max= 8143, per=100.00%, avg=7950.00, stdev=272.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=16.50%, ctx=475, 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=146445: Thu Jan 22 00:22:46 2026 read: IOPS=0, BW=1928KiB/s (1975kB/s)(4096KiB/2124msec) clat (nsec): min=639087k, max=639087k, avg=639087378.00, stdev= 0.00 lat (nsec): min=639090k, max=639090k, avg=639090178.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3857KiB/s (3949kB/s)(8192KiB/2124msec); 0 zone resets clat (msec): min=261, max=1114, avg=687.86, stdev=602.97 lat (msec): min=262, max=1114, avg=688.47, stdev=602.82 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 262], | 30.00th=[ 262], 40.00th=[ 262], 50.00th=[ 262], 60.00th=[ 1116], | 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= 8143, max= 8143, per=56.44%, avg=8143.00, 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%, 2000=33.33% cpu : usr=0.00%, sys=6.64%, ctx=183, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1,2,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146446: Thu Jan 22 00:22:46 2026 write: IOPS=1, BW=5411KiB/s (5541kB/s)(12.0MiB/2271msec); 0 zone resets clat (msec): min=631, max=821, avg=710.04, stdev=98.88 lat (msec): min=631, max=821, avg=710.83, stdev=98.67 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 818], 80.00th=[ 818], 90.00th=[ 818], 95.00th=[ 818], | 99.00th=[ 818], 99.50th=[ 818], 99.90th=[ 818], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7757, max= 8143, per=55.10%, avg=7950.00, stdev=272.94, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=66.67%, 1000=33.33% cpu : usr=0.00%, sys=10.93%, ctx=83, 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=146447: Thu Jan 22 00:22:46 2026 write: IOPS=1, BW=6880KiB/s (7045kB/s)(12.0MiB/1786msec); 0 zone resets clat (msec): min=322, max=1054, avg=579.56, stdev=412.19 lat (msec): min=322, max=1055, avg=580.56, stdev=411.84 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 321], | 30.00th=[ 321], 40.00th=[ 363], 50.00th=[ 363], 60.00th=[ 363], | 70.00th=[ 1053], 80.00th=[ 1053], 90.00th=[ 1053], 95.00th=[ 1053], | 99.00th=[ 1053], 99.50th=[ 1053], 99.90th=[ 1053], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 5970, max= 8143, per=48.91%, avg=7056.50, stdev=1536.54, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=66.67%, 2000=33.33% cpu : usr=0.00%, sys=5.49%, ctx=37, 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=7571KiB/s (7753kB/s), 1928KiB/s-5678KiB/s (1975kB/s-5815kB/s), io=16.0MiB (16.8MB), run=2124-2164msec WRITE: bw=14.1MiB/s (14.8MB/s), 3857KiB/s-6880KiB/s (3949kB/s-7045kB/s), io=32.0MiB (33.6MB), run=1786-2271msec rand-rw: (groupid=0, jobs=1): err= 0: pid=146449: Thu Jan 22 00:22:47 2026 read: IOPS=1, BW=5218KiB/s (5343kB/s)(12.0MiB/2355msec) clat (msec): min=223, max=1203, avg=771.14, stdev=500.35 lat (msec): min=223, max=1203, avg=771.15, stdev=500.35 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 224], | 30.00th=[ 224], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 1200], 80.00th=[ 1200], 90.00th=[ 1200], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 8192, max= 8192, per=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=3.82%, ctx=44, 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=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=146450: Thu Jan 22 00:22:47 2026 read: IOPS=0, BW=1719KiB/s (1760kB/s)(4096KiB/2383msec) clat (nsec): min=873417k, max=873417k, avg=873417156.00, stdev= 0.00 lat (nsec): min=873419k, max=873419k, avg=873419316.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 877], 5.00th=[ 877], 10.00th=[ 877], 20.00th=[ 877], | 30.00th=[ 877], 40.00th=[ 877], 50.00th=[ 877], 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=100.00%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3438KiB/s (3520kB/s)(8192KiB/2383msec); 0 zone resets clat (msec): min=242, max=1123, avg=682.73, stdev=622.97 lat (msec): min=242, max=1123, avg=683.10, stdev=622.96 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 243], 10.00th=[ 243], 20.00th=[ 243], | 30.00th=[ 243], 40.00th=[ 243], 50.00th=[ 243], 60.00th=[ 1116], | 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= 8094, max= 8094, per=68.35%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.21%, sys=4.74%, ctx=48, 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=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=146451: Thu Jan 22 00:22:47 2026 write: IOPS=1, BW=4441KiB/s (4547kB/s)(12.0MiB/2767msec); 0 zone resets clat (msec): min=204, max=1291, avg=861.50, stdev=577.96 lat (msec): min=204, max=1292, avg=862.27, stdev=578.30 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 205], 10.00th=[ 205], 20.00th=[ 205], | 30.00th=[ 205], 40.00th=[ 1083], 50.00th=[ 1083], 60.00th=[ 1083], | 70.00th=[ 1284], 80.00th=[ 1284], 90.00th=[ 1284], 95.00th=[ 1284], | 99.00th=[ 1284], 99.50th=[ 1284], 99.90th=[ 1284], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 8094, max= 8094, per=68.35%, avg=8094.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.86%, ctx=44, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=146452: Thu Jan 22 00:22:47 2026 write: IOPS=1, BW=7314KiB/s (7490kB/s)(12.0MiB/1680msec); 0 zone resets clat (msec): min=278, max=974, avg=544.84, stdev=375.23 lat (msec): min=279, max=974, avg=545.36, stdev=375.14 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 279], 10.00th=[ 279], 20.00th=[ 279], | 30.00th=[ 279], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 978], 80.00th=[ 978], 90.00th=[ 978], 95.00th=[ 978], | 99.00th=[ 978], 99.50th=[ 978], 99.90th=[ 978], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min=11010, max=11010, per=92.97%, avg=11010.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 500=66.67%, 1000=33.33% cpu : usr=0.00%, sys=6.61%, ctx=32, 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=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=6875KiB/s (7040kB/s), 1719KiB/s-5218KiB/s (1760kB/s-5343kB/s), io=16.0MiB (16.8MB), run=2355-2383msec WRITE: bw=11.6MiB/s (12.1MB/s), 3438KiB/s-7314KiB/s (3520kB/s-7490kB/s), io=32.0MiB (33.6MB), run=1680-2767msec