== sanity test 398b: DIO and buffer IO race ============== 16:25:24 (1787775924) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 5.89729 s, 8.5 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=144369: Wed Aug 26 16:28:03 2026 read: IOPS=11, BW=44.4KiB/s (45.5kB/s)(5992KiB/134852msec) clat (usec): min=31, max=397793, avg=42434.10, stdev=33007.94 lat (usec): min=31, max=397794, avg=42435.37, stdev=33007.93 clat percentiles (usec): | 1.00th=[ 47], 5.00th=[ 57], 10.00th=[ 80], 20.00th=[ 18220], | 30.00th=[ 24773], 40.00th=[ 30540], 50.00th=[ 35914], 60.00th=[ 42730], | 70.00th=[ 53216], 80.00th=[ 66323], 90.00th=[ 83362], 95.00th=[ 96994], | 99.00th=[141558], 99.50th=[175113], 99.90th=[308282], 99.95th=[396362], | 99.99th=[396362] bw ( KiB/s): min= 7, max= 111, per=25.70%, avg=44.20, stdev=18.89, samples=264 iops : min= 1, max= 27, avg=10.37, stdev= 4.75, samples=264 write: IOPS=11, BW=46.7KiB/s (47.8kB/s)(6296KiB/134852msec); 0 zone resets clat (usec): min=874, max=442359, avg=45179.02, stdev=47756.90 lat (usec): min=875, max=442361, avg=45181.24, stdev=47756.82 clat percentiles (usec): | 1.00th=[ 1037], 5.00th=[ 1139], 10.00th=[ 1631], 20.00th=[ 4178], | 30.00th=[ 8979], 40.00th=[ 20579], 50.00th=[ 33162], 60.00th=[ 45351], | 70.00th=[ 60556], 80.00th=[ 77071], 90.00th=[106431], 95.00th=[137364], | 99.00th=[212861], 99.50th=[235930], 99.90th=[387974], 99.95th=[442500], | 99.99th=[442500] bw ( KiB/s): min= 7, max= 119, per=25.61%, avg=46.09, stdev=20.87, samples=266 iops : min= 1, max= 29, avg=10.86, stdev= 5.25, samples=266 lat (usec) : 50=0.94%, 100=4.33%, 250=0.52%, 500=0.07%, 1000=0.26% lat (msec) : 2=6.15%, 4=3.78%, 10=6.25%, 20=8.85%, 50=33.82% lat (msec) : 100=26.69%, 250=8.07%, 500=0.26% cpu : usr=0.08%, sys=4.92%, ctx=6340, majf=0, minf=17 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144370: Wed Aug 26 16:28:03 2026 read: IOPS=10, BW=43.1KiB/s (44.1kB/s)(5940KiB/137905msec) clat (usec): min=33, max=444754, avg=44833.61, stdev=37135.21 lat (usec): min=34, max=444755, avg=44835.14, stdev=37135.14 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 131], 20.00th=[ 19530], | 30.00th=[ 25297], 40.00th=[ 30802], 50.00th=[ 37487], 60.00th=[ 44827], | 70.00th=[ 54789], 80.00th=[ 67634], 90.00th=[ 88605], 95.00th=[105382], | 99.00th=[175113], 99.50th=[227541], 99.90th=[295699], 99.95th=[446694], | 99.99th=[446694] bw ( KiB/s): min= 6, max= 103, per=24.91%, avg=42.84, stdev=18.54, samples=270 iops : min= 1, max= 25, avg=10.04, stdev= 4.68, samples=270 write: IOPS=11, BW=46.0KiB/s (47.1kB/s)(6348KiB/137905msec); 0 zone resets clat (usec): min=971, max=366574, avg=44858.06, stdev=46151.68 lat (usec): min=971, max=366574, avg=44860.55, stdev=46152.02 clat percentiles (usec): | 1.00th=[ 1020], 5.00th=[ 1139], 10.00th=[ 1401], 20.00th=[ 4015], | 30.00th=[ 8848], 40.00th=[ 21103], 50.00th=[ 33424], 60.00th=[ 46400], | 70.00th=[ 60556], 80.00th=[ 77071], 90.00th=[105382], 95.00th=[129500], | 99.00th=[200279], 99.50th=[231736], 99.90th=[358613], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 7, max= 127, per=25.32%, avg=45.58, stdev=20.31, samples=271 iops : min= 1, max= 31, avg=10.73, stdev= 5.11, samples=271 lat (usec) : 50=1.01%, 100=3.81%, 250=0.42%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.36% lat (msec) : 2=7.06%, 4=3.12%, 10=6.12%, 20=8.17%, 50=33.69% lat (msec) : 100=27.15%, 250=8.66%, 500=0.33% cpu : usr=0.07%, sys=4.90%, ctx=6365, 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=144371: Wed Aug 26 16:28:03 2026 read: IOPS=10, BW=43.2KiB/s (44.2kB/s)(6028KiB/139543msec) clat (usec): min=31, max=360779, avg=43759.50, stdev=33843.33 lat (usec): min=32, max=360780, avg=43760.85, stdev=33843.28 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 57], 10.00th=[ 161], 20.00th=[ 19268], | 30.00th=[ 25560], 40.00th=[ 30540], 50.00th=[ 36439], 60.00th=[ 43254], | 70.00th=[ 54264], 80.00th=[ 67634], 90.00th=[ 87557], 95.00th=[103285], | 99.00th=[147850], 99.50th=[177210], 99.90th=[287310], 99.95th=[362808], | 99.99th=[362808] bw ( KiB/s): min= 6, max= 127, per=24.96%, avg=42.93, stdev=20.31, samples=273 iops : min= 1, max= 31, avg=10.06, stdev= 5.11, samples=273 write: IOPS=11, BW=44.9KiB/s (45.9kB/s)(6260KiB/139543msec); 0 zone resets clat (usec): min=940, max=472859, avg=46948.35, stdev=49535.56 lat (usec): min=940, max=472860, avg=46954.38, stdev=49532.49 clat percentiles (usec): | 1.00th=[ 1057], 5.00th=[ 1156], 10.00th=[ 1352], 20.00th=[ 3818], | 30.00th=[ 9765], 40.00th=[ 23462], 50.00th=[ 35914], 60.00th=[ 47973], | 70.00th=[ 62129], 80.00th=[ 79168], 90.00th=[108528], 95.00th=[135267], | 99.00th=[214959], 99.50th=[270533], 99.90th=[425722], 99.95th=[471860], | 99.99th=[471860] bw ( KiB/s): min= 7, max= 135, per=24.72%, avg=44.49, stdev=19.01, samples=273 iops : min= 1, max= 33, avg=10.45, stdev= 4.78, samples=273 lat (usec) : 50=1.01%, 100=3.68%, 250=0.29%, 500=0.16%, 750=0.07% lat (usec) : 1000=0.16% lat (msec) : 2=7.36%, 4=3.32%, 10=5.01%, 20=8.85%, 50=34.02% lat (msec) : 100=26.89%, 250=8.79%, 500=0.39% cpu : usr=0.07%, sys=5.01%, ctx=6421, 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=144372: Wed Aug 26 16:28:03 2026 read: IOPS=11, BW=44.3KiB/s (45.4kB/s)(6052KiB/136570msec) clat (usec): min=30, max=389252, avg=41247.63, stdev=35336.59 lat (usec): min=30, max=389253, avg=41248.83, stdev=35336.70 clat percentiles (usec): | 1.00th=[ 45], 5.00th=[ 54], 10.00th=[ 65], 20.00th=[ 16712], | 30.00th=[ 22676], 40.00th=[ 28181], 50.00th=[ 34341], 60.00th=[ 41157], | 70.00th=[ 50594], 80.00th=[ 61604], 90.00th=[ 84411], 95.00th=[102237], | 99.00th=[152044], 99.50th=[198181], 99.90th=[308282], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 7, max= 119, per=25.64%, avg=44.10, stdev=21.19, samples=267 iops : min= 1, max= 29, avg=10.36, stdev= 5.32, samples=267 write: IOPS=11, BW=45.7KiB/s (46.8kB/s)(6236KiB/136570msec); 0 zone resets clat (usec): min=821, max=386928, avg=47451.56, stdev=48740.75 lat (usec): min=822, max=386929, avg=47458.44, stdev=48736.54 clat percentiles (usec): | 1.00th=[ 1029], 5.00th=[ 1139], 10.00th=[ 1434], 20.00th=[ 4424], | 30.00th=[ 9503], 40.00th=[ 22414], 50.00th=[ 35390], 60.00th=[ 47973], | 70.00th=[ 63177], 80.00th=[ 83362], 90.00th=[110625], 95.00th=[137364], | 99.00th=[202376], 99.50th=[238027], 99.90th=[379585], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 7, max= 134, per=25.11%, avg=45.20, stdev=20.50, samples=268 iops : min= 1, max= 33, avg=10.63, stdev= 5.15, samples=268 lat (usec) : 50=1.20%, 100=4.92%, 250=0.29%, 500=0.07%, 1000=0.33% lat (msec) : 2=6.38%, 4=2.99%, 10=6.35%, 20=9.41%, 50=33.37% lat (msec) : 100=25.10%, 250=9.21%, 500=0.39% cpu : usr=0.07%, sys=4.75%, ctx=6210, 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=172KiB/s (176kB/s), 43.1KiB/s-44.4KiB/s (44.1kB/s-45.5kB/s), io=23.4MiB (24.6MB), run=134852-139543msec WRITE: bw=180KiB/s (184kB/s), 44.9KiB/s-46.7KiB/s (45.9kB/s-47.8kB/s), io=24.6MiB (25.7MB), run=134852-139543msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144364: Wed Aug 26 16:30:37 2026 read: IOPS=5, BW=20.5KiB/s (21.0kB/s)(5992KiB/292140msec) clat (msec): min=5, max=790, avg=39.60, stdev=42.81 lat (msec): min=5, max=790, avg=39.61, stdev=42.81 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 23], 50.00th=[ 28], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 52], 90.00th=[ 85], 95.00th=[ 115], | 99.00th=[ 184], 99.50th=[ 228], 99.90th=[ 435], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 95, per=28.72%, avg=23.26, stdev=15.83, samples=497 iops : min= 1, max= 23, avg= 5.19, stdev= 3.97, samples=497 write: IOPS=5, BW=21.6KiB/s (22.1kB/s)(6296KiB/292140msec); 0 zone resets clat (msec): min=38, max=767, avg=147.66, stdev=74.05 lat (msec): min=38, max=767, avg=147.67, stdev=74.05 clat percentiles (msec): | 1.00th=[ 57], 5.00th=[ 69], 10.00th=[ 78], 20.00th=[ 90], | 30.00th=[ 102], 40.00th=[ 113], 50.00th=[ 127], 60.00th=[ 144], | 70.00th=[ 163], 80.00th=[ 199], 90.00th=[ 253], 95.00th=[ 300], | 99.00th=[ 372], 99.50th=[ 456], 99.90th=[ 527], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 48, per=24.97%, avg=21.22, stdev=10.06, samples=569 iops : min= 1, max= 12, avg= 4.67, stdev= 2.57, samples=569 lat (msec) : 10=2.34%, 20=13.80%, 50=22.46%, 100=21.03%, 250=34.86% lat (msec) : 500=5.34%, 750=0.10%, 1000=0.07% cpu : usr=0.04%, sys=1.13%, ctx=5358, 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=144365: Wed Aug 26 16:30:37 2026 read: IOPS=5, BW=20.2KiB/s (20.7kB/s)(5940KiB/294325msec) clat (msec): min=5, max=724, avg=38.72, stdev=41.65 lat (msec): min=5, max=724, avg=38.72, stdev=41.65 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 22], 50.00th=[ 27], 60.00th=[ 32], | 70.00th=[ 40], 80.00th=[ 52], 90.00th=[ 83], 95.00th=[ 111], | 99.00th=[ 194], 99.50th=[ 253], 99.90th=[ 443], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 95, per=28.85%, avg=23.37, stdev=16.00, samples=490 iops : min= 1, max= 23, avg= 5.21, stdev= 4.04, samples=490 write: IOPS=5, BW=21.6KiB/s (22.1kB/s)(6348KiB/294325msec); 0 zone resets clat (msec): min=46, max=689, avg=148.99, stdev=77.59 lat (msec): min=46, max=689, avg=148.99, stdev=77.59 clat percentiles (msec): | 1.00th=[ 56], 5.00th=[ 69], 10.00th=[ 78], 20.00th=[ 91], | 30.00th=[ 102], 40.00th=[ 114], 50.00th=[ 126], 60.00th=[ 140], | 70.00th=[ 163], 80.00th=[ 201], 90.00th=[ 259], 95.00th=[ 309], | 99.00th=[ 414], 99.50th=[ 460], 99.90th=[ 542], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 48, per=25.04%, avg=21.29, stdev=10.10, samples=573 iops : min= 1, max= 12, avg= 4.68, stdev= 2.58, samples=573 lat (msec) : 10=2.08%, 20=15.14%, 50=21.13%, 100=21.52%, 250=34.15% lat (msec) : 500=5.79%, 750=0.20% cpu : usr=0.04%, sys=1.16%, ctx=5536, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144366: Wed Aug 26 16:30:37 2026 read: IOPS=5, BW=20.5KiB/s (20.9kB/s)(6028KiB/294716msec) clat (msec): min=6, max=444, avg=40.70, stdev=39.53 lat (msec): min=6, max=444, avg=40.71, stdev=39.53 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 11], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 20], 40.00th=[ 24], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 42], 80.00th=[ 55], 90.00th=[ 88], 95.00th=[ 117], | 99.00th=[ 190], 99.50th=[ 232], 99.90th=[ 435], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 7, max= 104, per=28.72%, avg=23.27, stdev=15.74, samples=498 iops : min= 1, max= 26, avg= 5.18, stdev= 3.98, samples=498 write: IOPS=5, BW=21.2KiB/s (21.8kB/s)(6260KiB/294716msec); 0 zone resets clat (msec): min=44, max=806, avg=148.85, stdev=79.38 lat (msec): min=44, max=806, avg=148.87, stdev=79.37 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 68], 10.00th=[ 79], 20.00th=[ 90], | 30.00th=[ 102], 40.00th=[ 113], 50.00th=[ 125], 60.00th=[ 140], | 70.00th=[ 163], 80.00th=[ 199], 90.00th=[ 253], 95.00th=[ 300], | 99.00th=[ 401], 99.50th=[ 477], 99.90th=[ 768], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 47, per=24.82%, avg=21.10, stdev= 9.97, samples=568 iops : min= 1, max= 11, avg= 4.64, stdev= 2.54, samples=568 lat (msec) : 10=1.95%, 20=13.54%, 50=22.49%, 100=21.91%, 250=34.67% lat (msec) : 500=5.21%, 750=0.16%, 1000=0.07% cpu : usr=0.04%, sys=1.15%, ctx=5394, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144367: Wed Aug 26 16:30:37 2026 read: IOPS=5, BW=20.8KiB/s (21.3kB/s)(6052KiB/290765msec) clat (msec): min=5, max=399, avg=37.71, stdev=34.96 lat (msec): min=5, max=399, avg=37.71, stdev=34.96 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 13], 20.00th=[ 16], | 30.00th=[ 19], 40.00th=[ 23], 50.00th=[ 27], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 51], 90.00th=[ 82], 95.00th=[ 111], | 99.00th=[ 157], 99.50th=[ 194], 99.90th=[ 326], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 7, max= 95, per=29.79%, avg=24.13, stdev=16.22, samples=484 iops : min= 1, max= 23, avg= 5.39, stdev= 4.08, samples=484 write: IOPS=5, BW=21.4KiB/s (21.0kB/s)(6236KiB/290765msec); 0 zone resets clat (msec): min=39, max=802, avg=149.66, stdev=78.69 lat (msec): min=39, max=802, avg=149.67, stdev=78.69 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 69], 10.00th=[ 78], 20.00th=[ 90], | 30.00th=[ 103], 40.00th=[ 113], 50.00th=[ 126], 60.00th=[ 142], | 70.00th=[ 165], 80.00th=[ 201], 90.00th=[ 259], 95.00th=[ 313], | 99.00th=[ 401], 99.50th=[ 439], 99.90th=[ 535], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 47, per=24.81%, avg=21.08, stdev=10.17, samples=568 iops : min= 1, max= 11, avg= 4.63, stdev= 2.59, samples=568 lat (msec) : 10=2.67%, 20=14.42%, 50=22.53%, 100=20.74%, 250=33.82% lat (msec) : 500=5.70%, 750=0.10%, 1000=0.03% cpu : usr=0.04%, sys=1.13%, ctx=5419, 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=81.5KiB/s (83.4kB/s), 20.2KiB/s-20.8KiB/s (20.7kB/s-21.3kB/s), io=23.4MiB (24.6MB), run=290765-294716msec WRITE: bw=85.3KiB/s (87.3kB/s), 21.2KiB/s-21.6KiB/s (21.8kB/s-22.1kB/s), io=24.6MiB (25.7MB), run=290765-294716msec 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=144434: Wed Aug 26 16:31:14 2026 read: IOPS=15, BW=242KiB/s (248kB/s)(5920KiB/24485msec) clat (usec): min=31, max=208217, avg=35065.90, stdev=29999.58 lat (usec): min=32, max=208218, avg=35067.79, stdev=29999.78 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 56], 10.00th=[ 65], 20.00th=[ 104], | 30.00th=[ 17171], 40.00th=[ 25822], 50.00th=[ 32113], 60.00th=[ 40633], | 70.00th=[ 49021], 80.00th=[ 58459], 90.00th=[ 70779], 95.00th=[ 85459], | 99.00th=[112722], 99.50th=[170918], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 31, max= 541, per=26.76%, avg=241.60, stdev=106.83, samples=48 iops : min= 1, max= 33, avg=14.37, stdev= 6.69, samples=48 write: IOPS=16, BW=260KiB/s (266kB/s)(6368KiB/24485msec); 0 zone resets clat (usec): min=1363, max=284843, avg=28777.14, stdev=35480.06 lat (usec): min=1365, max=284843, avg=28779.73, stdev=35479.77 clat percentiles (usec): | 1.00th=[ 1500], 5.00th=[ 1811], 10.00th=[ 2311], 20.00th=[ 4752], | 30.00th=[ 7177], 40.00th=[ 9634], 50.00th=[ 14484], 60.00th=[ 23987], | 70.00th=[ 34866], 80.00th=[ 47449], 90.00th=[ 70779], 95.00th=[ 93848], | 99.00th=[173016], 99.50th=[256902], 99.90th=[283116], 99.95th=[283116], | 99.99th=[283116] bw ( KiB/s): min= 63, max= 510, per=27.38%, avg=260.15, stdev=113.00, samples=48 iops : min= 3, max= 31, avg=15.54, stdev= 7.11, samples=48 lat (usec) : 50=1.43%, 100=8.07%, 250=0.78%, 500=0.65%, 750=0.13% lat (usec) : 1000=0.26% lat (msec) : 2=4.56%, 4=4.69%, 10=13.41%, 20=10.55%, 50=31.77% lat (msec) : 100=20.31%, 250=2.99%, 500=0.39% cpu : usr=0.09%, sys=7.07%, ctx=1422, 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=144435: Wed Aug 26 16:31:14 2026 read: IOPS=13, BW=217KiB/s (222kB/s)(5744KiB/26503msec) clat (usec): min=32, max=207109, avg=38154.28, stdev=32603.54 lat (usec): min=33, max=207110, avg=38161.20, stdev=32601.88 clat percentiles (usec): | 1.00th=[ 42], 5.00th=[ 58], 10.00th=[ 67], 20.00th=[ 668], | 30.00th=[ 20579], 40.00th=[ 27395], 50.00th=[ 33162], 60.00th=[ 40633], | 70.00th=[ 50070], 80.00th=[ 60556], 90.00th=[ 76022], 95.00th=[ 95945], | 99.00th=[141558], 99.50th=[206570], 99.90th=[206570], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 59, max= 510, per=23.82%, avg=215.13, stdev=99.37, samples=52 iops : min= 3, max= 31, avg=12.67, stdev= 6.20, samples=52 write: IOPS=15, BW=247KiB/s (253kB/s)(6544KiB/26503msec); 0 zone resets clat (usec): min=1381, max=248444, avg=31155.90, stdev=36157.29 lat (usec): min=1382, max=248448, avg=31165.24, stdev=36153.04 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 2040], 10.00th=[ 2868], 20.00th=[ 4817], | 30.00th=[ 7242], 40.00th=[ 10028], 50.00th=[ 17171], 60.00th=[ 25297], | 70.00th=[ 38536], 80.00th=[ 54789], 90.00th=[ 76022], 95.00th=[109577], | 99.00th=[158335], 99.50th=[183501], 99.90th=[248513], 99.95th=[248513], | 99.99th=[248513] bw ( KiB/s): min= 93, max= 447, per=25.73%, avg=244.48, stdev=100.52, samples=52 iops : min= 5, max= 27, avg=14.54, stdev= 6.31, samples=52 lat (usec) : 50=0.91%, 100=6.77%, 250=1.17%, 500=0.39%, 750=0.13% lat (msec) : 2=2.99%, 4=5.34%, 10=13.15%, 20=10.81%, 50=32.29% lat (msec) : 100=20.83%, 250=5.21% cpu : usr=0.10%, sys=6.93%, ctx=1509, 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=144436: Wed Aug 26 16:31:14 2026 read: IOPS=14, BW=240KiB/s (245kB/s)(6256KiB/26118msec) clat (usec): min=37, max=192366, avg=35646.66, stdev=29750.11 lat (usec): min=37, max=192366, avg=35652.55, stdev=29748.55 clat percentiles (usec): | 1.00th=[ 40], 5.00th=[ 55], 10.00th=[ 66], 20.00th=[ 247], | 30.00th=[ 20841], 40.00th=[ 27132], 50.00th=[ 33817], 60.00th=[ 39060], | 70.00th=[ 47449], 80.00th=[ 55837], 90.00th=[ 64750], 95.00th=[ 83362], | 99.00th=[154141], 99.50th=[173016], 99.90th=[191890], 99.95th=[191890], | 99.99th=[191890] bw ( KiB/s): min= 62, max= 476, per=26.67%, avg=240.86, stdev=90.60, samples=51 iops : min= 3, max= 29, avg=14.31, stdev= 5.61, samples=51 write: IOPS=14, BW=231KiB/s (236kB/s)(6032KiB/26118msec); 0 zone resets clat (usec): min=1470, max=205218, avg=32115.88, stdev=35654.34 lat (usec): min=1472, max=205219, avg=32148.84, stdev=35656.19 clat percentiles (usec): | 1.00th=[ 1565], 5.00th=[ 1860], 10.00th=[ 2671], 20.00th=[ 5276], | 30.00th=[ 7635], 40.00th=[ 12125], 50.00th=[ 18220], 60.00th=[ 27657], | 70.00th=[ 39584], 80.00th=[ 53740], 90.00th=[ 84411], 95.00th=[104334], | 99.00th=[183501], 99.50th=[198181], 99.90th=[204473], 99.95th=[204473], | 99.99th=[204473] bw ( KiB/s): min= 63, max= 473, per=24.00%, avg=228.02, stdev=97.43, samples=51 iops : min= 3, max= 29, avg=13.51, stdev= 6.12, samples=51 lat (usec) : 50=1.69%, 100=7.55%, 250=1.04%, 500=0.26%, 750=0.13% lat (msec) : 2=2.86%, 4=5.08%, 10=10.68%, 20=11.46%, 50=34.11% lat (msec) : 100=20.96%, 250=4.17% cpu : usr=0.12%, sys=6.93%, ctx=1573, 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=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=144437: Wed Aug 26 16:31:14 2026 read: IOPS=14, BW=233KiB/s (239kB/s)(6032KiB/25877msec) clat (usec): min=38, max=190681, avg=35868.69, stdev=31230.74 lat (usec): min=39, max=190682, avg=35870.03, stdev=31230.76 clat percentiles (usec): | 1.00th=[ 41], 5.00th=[ 56], 10.00th=[ 62], 20.00th=[ 88], | 30.00th=[ 18744], 40.00th=[ 26084], 50.00th=[ 32375], 60.00th=[ 40109], | 70.00th=[ 48497], 80.00th=[ 57934], 90.00th=[ 76022], 95.00th=[ 95945], | 99.00th=[137364], 99.50th=[158335], 99.90th=[189793], 99.95th=[189793], | 99.99th=[189793] bw ( KiB/s): min= 63, max= 698, per=25.76%, avg=232.59, stdev=111.73, samples=51 iops : min= 3, max= 43, avg=13.80, stdev= 6.99, samples=51 write: IOPS=15, BW=242KiB/s (248kB/s)(6256KiB/25877msec); 0 zone resets clat (usec): min=1265, max=209713, avg=31420.79, stdev=34403.06 lat (usec): min=1266, max=209716, avg=31428.70, stdev=34402.98 clat percentiles (usec): | 1.00th=[ 1434], 5.00th=[ 1844], 10.00th=[ 2278], 20.00th=[ 4359], | 30.00th=[ 6980], 40.00th=[ 10814], 50.00th=[ 19530], 60.00th=[ 30278], | 70.00th=[ 38536], 80.00th=[ 53216], 90.00th=[ 76022], 95.00th=[103285], | 99.00th=[166724], 99.50th=[177210], 99.90th=[208667], 99.95th=[208667], | 99.99th=[208667] bw ( KiB/s): min= 94, max= 507, per=25.46%, avg=241.84, stdev=94.51, samples=51 iops : min= 5, max= 31, avg=14.37, stdev= 5.89, samples=51 lat (usec) : 50=1.43%, 100=9.24%, 250=0.91%, 500=0.52%, 750=0.13% lat (msec) : 2=3.39%, 4=5.86%, 10=10.94%, 20=8.20%, 50=34.24% lat (msec) : 100=20.18%, 250=4.95% cpu : usr=0.09%, sys=7.08%, ctx=1462, 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=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=904KiB/s (925kB/s), 217KiB/s-242KiB/s (222kB/s-248kB/s), io=23.4MiB (24.5MB), run=24485-26503msec WRITE: bw=951KiB/s (974kB/s), 231KiB/s-260KiB/s (236kB/s-266kB/s), io=24.6MiB (25.8MB), run=24485-26503msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144429: Wed Aug 26 16:31:58 2026 read: IOPS=5, BW=84.5KiB/s (86.5kB/s)(5920KiB/70079msec) clat (msec): min=9, max=327, avg=41.39, stdev=32.29 lat (msec): min=9, max=327, avg=41.40, stdev=32.29 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 24], 40.00th=[ 30], 50.00th=[ 34], 60.00th=[ 40], | 70.00th=[ 47], 80.00th=[ 56], 90.00th=[ 79], 95.00th=[ 92], | 99.00th=[ 140], 99.50th=[ 326], 99.90th=[ 330], 99.95th=[ 330], | 99.99th=[ 330] bw ( KiB/s): min= 30, max= 318, per=28.96%, avg=96.73, stdev=54.82, samples=121 iops : min= 1, max= 19, avg= 5.26, stdev= 3.49, samples=121 write: IOPS=5, BW=90.9KiB/s (93.0kB/s)(6368KiB/70079msec); 0 zone resets clat (msec): min=46, max=488, avg=137.46, stdev=60.06 lat (msec): min=46, max=488, avg=137.46, stdev=60.06 clat percentiles (msec): | 1.00th=[ 51], 5.00th=[ 69], 10.00th=[ 78], 20.00th=[ 91], | 30.00th=[ 104], 40.00th=[ 112], 50.00th=[ 126], 60.00th=[ 138], | 70.00th=[ 155], 80.00th=[ 176], 90.00th=[ 211], 95.00th=[ 251], | 99.00th=[ 321], 99.50th=[ 439], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 30, max= 222, per=26.12%, avg=91.68, stdev=35.79, samples=137 iops : min= 1, max= 13, avg= 4.93, stdev= 2.32, samples=137 lat (msec) : 10=0.13%, 20=9.64%, 50=26.04%, 100=25.39%, 250=35.94% lat (msec) : 500=2.86% cpu : usr=0.04%, sys=1.53%, ctx=1467, 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=144430: Wed Aug 26 16:31:58 2026 read: IOPS=5, BW=80.2KiB/s (82.1kB/s)(5744KiB/71645msec) clat (msec): min=8, max=207, avg=45.82, stdev=35.70 lat (msec): min=8, max=207, avg=45.83, stdev=35.70 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 14], 10.00th=[ 17], 20.00th=[ 22], | 30.00th=[ 26], 40.00th=[ 32], 50.00th=[ 36], 60.00th=[ 43], | 70.00th=[ 50], 80.00th=[ 62], 90.00th=[ 87], 95.00th=[ 129], | 99.00th=[ 188], 99.50th=[ 197], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 30, max= 351, per=27.62%, avg=92.24, stdev=59.59, samples=123 iops : min= 1, max= 21, avg= 4.98, stdev= 3.78, samples=123 write: IOPS=5, BW=91.3KiB/s (93.5kB/s)(6544KiB/71645msec); 0 zone resets clat (msec): min=35, max=443, avg=134.54, stdev=55.72 lat (msec): min=35, max=443, avg=134.54, stdev=55.73 clat percentiles (msec): | 1.00th=[ 54], 5.00th=[ 70], 10.00th=[ 75], 20.00th=[ 86], | 30.00th=[ 103], 40.00th=[ 113], 50.00th=[ 126], 60.00th=[ 136], | 70.00th=[ 150], 80.00th=[ 169], 90.00th=[ 211], 95.00th=[ 243], | 99.00th=[ 300], 99.50th=[ 330], 99.90th=[ 443], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 31, max= 192, per=26.02%, avg=91.32, stdev=35.05, samples=141 iops : min= 1, max= 12, avg= 4.91, stdev= 2.28, samples=141 lat (msec) : 10=0.39%, 20=8.33%, 50=24.87%, 100=24.61%, 250=39.19% lat (msec) : 500=2.60% cpu : usr=0.06%, sys=1.52%, ctx=1470, 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=144431: Wed Aug 26 16:31:58 2026 read: IOPS=5, BW=92.3KiB/s (94.5kB/s)(6256KiB/67815msec) clat (msec): min=7, max=209, avg=40.93, stdev=29.51 lat (msec): min=7, max=209, avg=40.93, stdev=29.51 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 20], | 30.00th=[ 25], 40.00th=[ 29], 50.00th=[ 33], 60.00th=[ 39], | 70.00th=[ 45], 80.00th=[ 55], 90.00th=[ 72], 95.00th=[ 101], | 99.00th=[ 159], 99.50th=[ 186], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 30, max= 314, per=30.36%, avg=101.39, stdev=65.61, samples=122 iops : min= 1, max= 19, avg= 5.56, stdev= 4.16, samples=122 write: IOPS=5, BW=88.9KiB/s (91.1kB/s)(6032KiB/67815msec); 0 zone resets clat (msec): min=41, max=485, avg=136.98, stdev=63.76 lat (msec): min=41, max=485, avg=137.00, stdev=63.75 clat percentiles (msec): | 1.00th=[ 55], 5.00th=[ 70], 10.00th=[ 78], 20.00th=[ 87], | 30.00th=[ 102], 40.00th=[ 112], 50.00th=[ 123], 60.00th=[ 136], | 70.00th=[ 153], 80.00th=[ 176], 90.00th=[ 220], 95.00th=[ 259], | 99.00th=[ 409], 99.50th=[ 451], 99.90th=[ 485], 99.95th=[ 485], | 99.99th=[ 485] bw ( KiB/s): min= 30, max= 224, per=25.53%, avg=89.61, stdev=36.39, samples=132 iops : min= 1, max= 14, avg= 4.80, stdev= 2.35, samples=132 lat (msec) : 10=0.91%, 20=9.64%, 50=28.13%, 100=24.09%, 250=34.38% lat (msec) : 500=2.86% cpu : usr=0.05%, sys=1.63%, ctx=1550, 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=144432: Wed Aug 26 16:31:58 2026 read: IOPS=5, BW=85.6KiB/s (87.6kB/s)(6032KiB/70501msec) clat (msec): min=7, max=226, avg=42.21, stdev=33.05 lat (msec): min=7, max=226, avg=42.21, stdev=33.05 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 16], 20.00th=[ 21], | 30.00th=[ 24], 40.00th=[ 28], 50.00th=[ 33], 60.00th=[ 38], | 70.00th=[ 46], 80.00th=[ 56], 90.00th=[ 77], 95.00th=[ 123], | 99.00th=[ 174], 99.50th=[ 186], 99.90th=[ 228], 99.95th=[ 228], | 99.99th=[ 228] bw ( KiB/s): min= 30, max= 352, per=29.97%, avg=100.09, stdev=61.76, samples=117 iops : min= 1, max= 22, avg= 5.48, stdev= 3.89, samples=117 write: IOPS=5, BW=88.7KiB/s (90.9kB/s)(6256KiB/70501msec); 0 zone resets clat (msec): min=44, max=338, avg=139.21, stdev=58.20 lat (msec): min=44, max=338, avg=139.21, stdev=58.20 clat percentiles (msec): | 1.00th=[ 53], 5.00th=[ 71], 10.00th=[ 80], 20.00th=[ 93], | 30.00th=[ 103], 40.00th=[ 114], 50.00th=[ 127], 60.00th=[ 138], | 70.00th=[ 150], 80.00th=[ 180], 90.00th=[ 228], 95.00th=[ 262], | 99.00th=[ 313], 99.50th=[ 334], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 30, max= 160, per=25.27%, avg=88.69, stdev=33.00, samples=138 iops : min= 1, max= 10, avg= 4.75, stdev= 2.17, samples=138 lat (msec) : 10=0.78%, 20=8.98%, 50=27.21%, 100=22.14%, 250=37.37% lat (msec) : 500=3.52% cpu : usr=0.05%, sys=1.52%, ctx=1511, 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=334KiB/s (342kB/s), 80.2KiB/s-92.3KiB/s (82.1kB/s-94.5kB/s), io=23.4MiB (24.5MB), run=67815-71645msec WRITE: bw=352KiB/s (360kB/s), 88.7KiB/s-91.3KiB/s (90.9kB/s-93.5kB/s), io=24.6MiB (25.8MB), run=67815-71645msec 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=144454: Wed Aug 26 16:32:13 2026 read: IOPS=1, BW=1865KiB/s (1909kB/s)(7168KiB/3844msec) clat (msec): min=93, max=703, avg=238.01, stdev=217.78 lat (msec): min=93, max=703, avg=238.01, stdev=217.78 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 94], 10.00th=[ 94], 20.00th=[ 103], | 30.00th=[ 125], 40.00th=[ 125], 50.00th=[ 159], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 313], 90.00th=[ 701], 95.00th=[ 701], | 99.00th=[ 701], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 1950, max= 4320, per=66.47%, avg=2566.50, stdev=1169.53, samples=4 iops : min= 1, max= 4, avg= 1.75, stdev= 1.50, samples=4 write: IOPS=1, BW=1332KiB/s (1364kB/s)(5120KiB/3844msec); 0 zone resets clat (msec): min=267, max=514, avg=417.22, stdev=103.50 lat (msec): min=267, max=515, avg=417.58, stdev=103.75 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 268], | 30.00th=[ 359], 40.00th=[ 359], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] bw ( KiB/s): min= 1950, max= 2035, per=36.91%, avg=1995.40, stdev=38.15, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 100=8.33%, 250=33.33%, 500=41.67%, 750=16.67% cpu : usr=0.00%, sys=6.35%, ctx=90, 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=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=144455: Wed Aug 26 16:32:13 2026 read: IOPS=0, BW=386KiB/s (395kB/s)(2048KiB/5303msec) clat (msec): min=102, max=202, avg=152.85, stdev=70.53 lat (msec): min=102, max=202, avg=152.85, stdev=70.53 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 104], 10.00th=[ 104], 20.00th=[ 104], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 104], 60.00th=[ 203], | 70.00th=[ 203], 80.00th=[ 203], 90.00th=[ 203], 95.00th=[ 203], | 99.00th=[ 203], 99.50th=[ 203], 99.90th=[ 203], 99.95th=[ 203], | 99.99th=[ 203] bw ( KiB/s): min= 1389, max= 2035, per=44.34%, avg=1712.00, stdev=456.79, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1931KiB/s (1977kB/s)(10.0MiB/5303msec); 0 zone resets clat (msec): min=192, max=1202, avg=495.18, stdev=311.26 lat (msec): min=192, max=1203, avg=495.41, stdev=311.19 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 192], 10.00th=[ 192], 20.00th=[ 230], | 30.00th=[ 317], 40.00th=[ 321], 50.00th=[ 351], 60.00th=[ 447], | 70.00th=[ 506], 80.00th=[ 550], 90.00th=[ 844], 95.00th=[ 1200], | 99.00th=[ 1200], 99.50th=[ 1200], 99.90th=[ 1200], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 1950, max= 4063, per=44.40%, avg=2400.29, stdev=790.14, samples=7 iops : min= 1, max= 3, avg= 1.43, stdev= 0.79, samples=7 lat (msec) : 250=33.33%, 500=33.33%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=4.26%, ctx=100, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=2,10,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144456: Wed Aug 26 16:32:13 2026 read: IOPS=1, BW=1269KiB/s (1299kB/s)(6144KiB/4842msec) clat (msec): min=98, max=869, avg=344.14, stdev=273.23 lat (msec): min=98, max=869, avg=344.14, stdev=273.23 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 99], 10.00th=[ 99], 20.00th=[ 167], | 30.00th=[ 167], 40.00th=[ 275], 50.00th=[ 275], 60.00th=[ 326], | 70.00th=[ 326], 80.00th=[ 326], 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= 1950, max= 3930, per=64.07%, avg=2473.75, stdev=971.47, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1269KiB/s (1299kB/s)(6144KiB/4842msec); 0 zone resets clat (msec): min=260, max=784, avg=441.74, stdev=193.93 lat (msec): min=260, max=784, avg=441.85, stdev=193.94 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 262], 10.00th=[ 262], 20.00th=[ 342], | 30.00th=[ 342], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 359], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 785], 95.00th=[ 785], | 99.00th=[ 785], 99.50th=[ 785], 99.90th=[ 785], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 1446, max= 2031, per=35.25%, avg=1905.50, stdev=226.84, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 lat (msec) : 100=8.33%, 250=8.33%, 500=58.33%, 750=8.33%, 1000=16.67% cpu : usr=0.00%, sys=5.06%, 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=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=144457: Wed Aug 26 16:32:13 2026 read: IOPS=1, BW=1172KiB/s (1200kB/s)(5120KiB/4368msec) clat (msec): min=62, max=500, avg=209.58, stdev=171.79 lat (msec): min=62, max=500, avg=209.58, stdev=171.79 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 63], 10.00th=[ 63], 20.00th=[ 63], | 30.00th=[ 104], 40.00th=[ 104], 50.00th=[ 190], 60.00th=[ 190], | 70.00th=[ 192], 80.00th=[ 192], 90.00th=[ 502], 95.00th=[ 502], | 99.00th=[ 502], 99.50th=[ 502], 99.90th=[ 502], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 7801, max= 7801, per=100.00%, avg=7801.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=1641KiB/s (1680kB/s)(7168KiB/4368msec); 0 zone resets clat (msec): min=96, max=969, avg=456.12, stdev=317.45 lat (msec): min=96, max=969, avg=456.22, stdev=317.44 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 97], 10.00th=[ 97], 20.00th=[ 199], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 317], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 760], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 1965, max= 3961, per=47.54%, avg=2570.00, stdev=874.24, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 lat (msec) : 100=16.67%, 250=33.33%, 500=16.67%, 750=16.67%, 1000=16.67% cpu : usr=0.02%, sys=4.42%, ctx=80, 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=3862KiB/s (3955kB/s), 386KiB/s-1865KiB/s (395kB/s-1909kB/s), io=20.0MiB (20.0MB), run=3844-5303msec WRITE: bw=5407KiB/s (5537kB/s), 1269KiB/s-1931KiB/s (1299kB/s-1977kB/s), io=28.0MiB (29.4MB), run=3844-5303msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144459: Wed Aug 26 16:32:13 2026 read: IOPS=1, BW=1837KiB/s (1882kB/s)(7168KiB/3901msec) clat (msec): min=3, max=396, avg=216.25, stdev=138.65 lat (msec): min=3, max=396, avg=216.25, stdev=138.65 clat percentiles (msec): | 1.00th=[ 4], 5.00th=[ 4], 10.00th=[ 4], 20.00th=[ 111], | 30.00th=[ 194], 40.00th=[ 194], 50.00th=[ 213], 60.00th=[ 220], | 70.00th=[ 220], 80.00th=[ 376], 90.00th=[ 397], 95.00th=[ 397], | 99.00th=[ 397], 99.50th=[ 397], 99.90th=[ 397], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 1921, max= 3771, per=58.57%, avg=2365.20, stdev=787.69, samples=5 iops : min= 1, max= 3, avg= 1.60, stdev= 0.89, samples=5 write: IOPS=1, BW=1312KiB/s (1344kB/s)(5120KiB/3901msec); 0 zone resets clat (msec): min=336, max=628, avg=470.42, stdev=107.71 lat (msec): min=336, max=628, avg=470.51, stdev=107.72 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 456], 60.00th=[ 456], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 1921, max= 2048, per=35.41%, avg=2002.00, stdev=58.86, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 4=8.33%, 250=33.33%, 500=41.67%, 750=16.67% cpu : usr=0.00%, sys=17.05%, ctx=261, 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=144460: Wed Aug 26 16:32:13 2026 read: IOPS=0, BW=404KiB/s (414kB/s)(2048KiB/5071msec) clat (msec): min=131, max=150, avg=140.52, stdev=13.42 lat (msec): min=131, max=150, avg=140.52, stdev=13.42 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 131], 10.00th=[ 131], 20.00th=[ 131], | 30.00th=[ 131], 40.00th=[ 131], 50.00th=[ 131], 60.00th=[ 150], | 70.00th=[ 150], 80.00th=[ 150], 90.00th=[ 150], 95.00th=[ 150], | 99.00th=[ 150], 99.50th=[ 150], 99.90th=[ 150], 99.95th=[ 150], | 99.99th=[ 150] bw ( KiB/s): min= 1851, max= 2035, per=48.12%, avg=1943.00, stdev=130.11, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=2019KiB/s (2068kB/s)(10.0MiB/5071msec); 0 zone resets clat (msec): min=224, max=1037, avg=478.54, stdev=273.60 lat (msec): min=224, max=1038, avg=478.84, stdev=273.44 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 224], 10.00th=[ 224], 20.00th=[ 253], | 30.00th=[ 275], 40.00th=[ 279], 50.00th=[ 351], 60.00th=[ 372], | 70.00th=[ 550], 80.00th=[ 651], 90.00th=[ 793], 95.00th=[ 1036], | 99.00th=[ 1036], 99.50th=[ 1036], 99.90th=[ 1036], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 1851, max= 4096, per=46.75%, avg=2643.17, stdev=1032.43, samples=6 iops : min= 1, max= 4, avg= 1.83, stdev= 1.33, samples=6 lat (msec) : 250=25.00%, 500=41.67%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.02%, sys=12.92%, ctx=159, 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=144461: Wed Aug 26 16:32:13 2026 read: IOPS=1, BW=1301KiB/s (1332kB/s)(6144KiB/4723msec) clat (usec): min=1808, max=412708, avg=218033.42, stdev=183510.71 lat (usec): min=1809, max=412709, avg=218034.80, stdev=183511.07 clat percentiles (usec): | 1.00th=[ 1811], 5.00th=[ 1811], 10.00th=[ 1811], 20.00th=[ 4047], | 30.00th=[ 4047], 40.00th=[202376], 50.00th=[202376], 60.00th=[287310], | 70.00th=[400557], 80.00th=[400557], 90.00th=[413139], 95.00th=[413139], | 99.00th=[413139], 99.50th=[413139], 99.90th=[413139], 99.95th=[413139], | 99.99th=[413139] bw ( KiB/s): min= 1969, max= 3842, per=61.22%, avg=2472.25, stdev=913.77, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1301KiB/s (1332kB/s)(6144KiB/4723msec); 0 zone resets clat (msec): min=220, max=932, avg=564.52, stdev=269.76 lat (msec): min=220, max=932, avg=564.59, stdev=269.77 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 222], 10.00th=[ 222], 20.00th=[ 372], | 30.00th=[ 372], 40.00th=[ 514], 50.00th=[ 514], 60.00th=[ 523], | 70.00th=[ 827], 80.00th=[ 827], 90.00th=[ 936], 95.00th=[ 936], | 99.00th=[ 936], 99.50th=[ 936], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 1914, max= 2048, per=35.26%, avg=1993.67, stdev=49.70, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (msec) : 2=8.33%, 10=8.33%, 250=16.67%, 500=33.33%, 750=16.67% lat (msec) : 1000=16.67% cpu : usr=0.00%, sys=13.26%, ctx=258, 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=144462: Wed Aug 26 16:32:13 2026 read: IOPS=1, BW=1172KiB/s (1200kB/s)(5120KiB/4370msec) clat (usec): min=451, max=349571, avg=110132.92, stdev=159048.89 lat (usec): min=453, max=349571, avg=110134.04, stdev=159048.48 clat percentiles (usec): | 1.00th=[ 453], 5.00th=[ 453], 10.00th=[ 453], 20.00th=[ 453], | 30.00th=[ 553], 40.00th=[ 553], 50.00th=[ 1012], 60.00th=[ 1012], | 70.00th=[198181], 80.00th=[198181], 90.00th=[350225], 95.00th=[350225], | 99.00th=[350225], 99.50th=[350225], 99.90th=[350225], 99.95th=[350225], | 99.99th=[350225] bw ( KiB/s): min= 2035, max= 5988, per=99.34%, avg=4011.50, stdev=2795.19, samples=2 iops : min= 1, max= 5, avg= 3.00, stdev= 2.83, samples=2 write: IOPS=1, BW=1640KiB/s (1680kB/s)(7168KiB/4370msec); 0 zone resets clat (msec): min=320, max=905, avg=544.95, stdev=197.63 lat (msec): min=322, max=905, avg=545.29, stdev=197.30 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 321], 10.00th=[ 321], 20.00th=[ 342], | 30.00th=[ 493], 40.00th=[ 493], 50.00th=[ 531], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 642], 90.00th=[ 902], 95.00th=[ 902], | 99.00th=[ 902], 99.50th=[ 902], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 1921, max= 2048, per=35.55%, avg=2009.83, stdev=52.63, samples=6 iops : min= 1, max= 2, avg= 1.17, stdev= 0.41, samples=6 lat (usec) : 500=8.33%, 750=8.33% lat (msec) : 2=8.33%, 250=8.33%, 500=33.33%, 750=25.00%, 1000=8.33% cpu : usr=0.07%, sys=14.60%, ctx=91, 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=4039KiB/s (4136kB/s), 404KiB/s-1837KiB/s (414kB/s-1882kB/s), io=20.0MiB (20.0MB), run=3901-5071msec WRITE: bw=5654KiB/s (5790kB/s), 1301KiB/s-2019KiB/s (1332kB/s-2068kB/s), io=28.0MiB (29.4MB), run=3901-5071msec 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=144474: Wed Aug 26 16:32:27 2026 read: IOPS=1, BW=4658KiB/s (4770kB/s)(12.0MiB/2638msec) clat (msec): min=756, max=923, avg=820.69, stdev=89.54 lat (msec): min=756, max=923, avg=820.69, stdev=89.54 clat percentiles (msec): | 1.00th=[ 760], 5.00th=[ 760], 10.00th=[ 760], 20.00th=[ 760], | 30.00th=[ 760], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 927], 80.00th=[ 927], 90.00th=[ 927], 95.00th=[ 927], | 99.00th=[ 927], 99.50th=[ 927], 99.90th=[ 927], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 7876, max= 7907, per=100.00%, avg=7891.50, stdev=21.92, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=100.00% cpu : usr=0.04%, sys=13.27%, ctx=281, 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=144475: Wed Aug 26 16:32:27 2026 read: IOPS=0, BW=1282KiB/s (1313kB/s)(4096KiB/3194msec) clat (nsec): min=658402k, max=658402k, avg=658401931.00, stdev= 0.00 lat (nsec): min=658406k, max=658406k, avg=658406031.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] bw ( KiB/s): min= 7876, max= 7876, per=100.00%, avg=7876.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2565KiB/s (2626kB/s)(8192KiB/3194msec); 0 zone resets clat (msec): min=830, max=1425, avg=1127.74, stdev=420.94 lat (msec): min=831, max=1425, avg=1128.48, stdev=420.66 clat percentiles (msec): | 1.00th=[ 827], 5.00th=[ 827], 10.00th=[ 827], 20.00th=[ 827], | 30.00th=[ 827], 40.00th=[ 827], 50.00th=[ 827], 60.00th=[ 1418], | 70.00th=[ 1418], 80.00th=[ 1418], 90.00th=[ 1418], 95.00th=[ 1418], | 99.00th=[ 1418], 99.50th=[ 1418], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7907, max= 7907, per=77.07%, avg=7907.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.60%, ctx=88, 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=144476: Wed Aug 26 16:32:27 2026 write: IOPS=1, BW=4157KiB/s (4257kB/s)(12.0MiB/2956msec); 0 zone resets clat (msec): min=306, max=1340, avg=960.68, stdev=568.86 lat (msec): min=306, max=1340, avg=961.01, stdev=568.87 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 309], 10.00th=[ 309], 20.00th=[ 309], | 30.00th=[ 309], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 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= 8110, max= 8175, per=79.37%, avg=8142.50, stdev=45.96, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=6.90%, ctx=70, majf=0, minf=9 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=144477: Wed Aug 26 16:32:27 2026 write: IOPS=1, BW=4686KiB/s (4799kB/s)(12.0MiB/2622msec); 0 zone resets clat (msec): min=386, max=1351, avg=840.35, stdev=484.85 lat (msec): min=386, max=1351, avg=840.70, stdev=484.95 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 785], 50.00th=[ 785], 60.00th=[ 785], | 70.00th=[ 1351], 80.00th=[ 1351], 90.00th=[ 1351], 95.00th=[ 1351], | 99.00th=[ 1351], 99.50th=[ 1351], 99.90th=[ 1351], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7876, max= 8175, per=78.23%, avg=8025.50, stdev=211.42, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.72%, ctx=68, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5130KiB/s (5253kB/s), 1282KiB/s-4658KiB/s (1313kB/s-4770kB/s), io=16.0MiB (16.8MB), run=2638-3194msec WRITE: bw=10.0MiB/s (10.5MB/s), 2565KiB/s-4686KiB/s (2626kB/s-4799kB/s), io=32.0MiB (33.6MB), run=2622-3194msec rand-rw: (groupid=0, jobs=1): err= 0: pid=144470: Wed Aug 26 16:32:28 2026 read: IOPS=0, BW=3697KiB/s (3785kB/s)(12.0MiB/3324msec) clat (msec): min=315, max=1570, avg=1047.38, stdev=653.46 lat (msec): min=315, max=1570, avg=1047.38, stdev=653.46 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 317], 10.00th=[ 317], 20.00th=[ 317], | 30.00th=[ 317], 40.00th=[ 1250], 50.00th=[ 1250], 60.00th=[ 1250], | 70.00th=[ 1569], 80.00th=[ 1569], 90.00th=[ 1569], 95.00th=[ 1569], | 99.00th=[ 1569], 99.50th=[ 1569], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 8175, max= 8192, per=100.00%, avg=8183.50, stdev=12.02, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=4.15%, ctx=72, 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=144471: Wed Aug 26 16:32:28 2026 read: IOPS=0, BW=1858KiB/s (1902kB/s)(4096KiB/2205msec) clat (nsec): min=234904k, max=234904k, avg=234904391.00, stdev= 0.00 lat (nsec): min=234905k, max=234905k, avg=234905350.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 236], 10.00th=[ 236], 20.00th=[ 236], | 30.00th=[ 236], 40.00th=[ 236], 50.00th=[ 236], 60.00th=[ 236], | 70.00th=[ 236], 80.00th=[ 236], 90.00th=[ 236], 95.00th=[ 236], | 99.00th=[ 236], 99.50th=[ 236], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 6215, max= 6215, per=100.00%, avg=6215.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=3715KiB/s (3804kB/s)(8192KiB/2205msec); 0 zone resets clat (msec): min=881, max=972, avg=927.25, stdev=64.15 lat (msec): min=882, max=973, avg=927.83, stdev=64.49 clat percentiles (msec): | 1.00th=[ 885], 5.00th=[ 885], 10.00th=[ 885], 20.00th=[ 885], | 30.00th=[ 885], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 969], | 70.00th=[ 969], 80.00th=[ 969], 90.00th=[ 969], 95.00th=[ 969], | 99.00th=[ 969], 99.50th=[ 969], 99.90th=[ 969], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 8192, max= 8192, per=96.41%, 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=66.67% cpu : usr=0.00%, sys=8.62%, ctx=89, 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=144472: Wed Aug 26 16:32:28 2026 write: IOPS=0, BW=3187KiB/s (3263kB/s)(12.0MiB/3856msec); 0 zone resets clat (msec): min=334, max=1846, avg=1241.08, stdev=799.59 lat (msec): min=334, max=1846, avg=1241.69, stdev=799.77 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 334], 10.00th=[ 334], 20.00th=[ 334], | 30.00th=[ 334], 40.00th=[ 1536], 50.00th=[ 1536], 60.00th=[ 1536], | 70.00th=[ 1854], 80.00th=[ 1854], 90.00th=[ 1854], 95.00th=[ 1854], | 99.00th=[ 1854], 99.50th=[ 1854], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 8126, max= 8192, per=96.02%, avg=8159.00, stdev=46.67, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 500=33.33%, 2000=66.67% cpu : usr=0.00%, sys=2.26%, ctx=42, 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=144473: Wed Aug 26 16:32:28 2026 write: IOPS=1, BW=5122KiB/s (5245kB/s)(12.0MiB/2399msec); 0 zone resets clat (msec): min=303, max=1381, avg=729.64, stdev=573.33 lat (msec): min=303, max=1381, avg=729.86, stdev=573.28 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 305], 10.00th=[ 305], 20.00th=[ 305], | 30.00th=[ 305], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 1385], 80.00th=[ 1385], 90.00th=[ 1385], 95.00th=[ 1385], | 99.00th=[ 1385], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 5432, max= 8078, per=79.50%, avg=6755.00, stdev=1871.00, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 500=33.33%, 750=33.33%, 2000=33.33% cpu : usr=0.00%, sys=6.96%, ctx=67, 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=4929KiB/s (5047kB/s), 1858KiB/s-3697KiB/s (1902kB/s-3785kB/s), io=16.0MiB (16.8MB), run=2205-3324msec WRITE: bw=8498KiB/s (8702kB/s), 3187KiB/s-5122KiB/s (3263kB/s-5245kB/s), io=32.0MiB (33.6MB), run=2205-3856msec