== sanity test 398b: DIO and buffer IO race ============== 14:08:55 (1787854135) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 6.22811 s, 8.1 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=179279: Thu Aug 27 14:10:59 2026 read: IOPS=13, BW=55.7KiB/s (57.1kB/s)(5992KiB/107511msec) clat (usec): min=34, max=575292, avg=39479.79, stdev=28353.25 lat (usec): min=35, max=575293, avg=39482.18, stdev=28353.47 clat percentiles (usec): | 1.00th=[ 54], 5.00th=[ 12125], 10.00th=[ 16057], 20.00th=[ 20841], | 30.00th=[ 24511], 40.00th=[ 28705], 50.00th=[ 34341], 60.00th=[ 39584], | 70.00th=[ 46924], 80.00th=[ 55837], 90.00th=[ 69731], 95.00th=[ 79168], | 99.00th=[125305], 99.50th=[164627], 99.90th=[283116], 99.95th=[574620], | 99.99th=[574620] bw ( KiB/s): min= 7, max= 119, per=24.94%, avg=55.13, stdev=20.30, samples=212 iops : min= 1, max= 29, avg=13.16, stdev= 5.09, samples=212 write: IOPS=14, BW=58.6KiB/s (59.0kB/s)(6296KiB/107511msec); 0 zone resets clat (usec): min=1004, max=231875, avg=30509.40, stdev=31105.75 lat (usec): min=1005, max=231877, avg=30511.27, stdev=31105.94 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1221], 10.00th=[ 1663], 20.00th=[ 3523], | 30.00th=[ 6718], 40.00th=[ 14222], 50.00th=[ 22676], 60.00th=[ 30278], | 70.00th=[ 39584], 80.00th=[ 52167], 90.00th=[ 74974], 95.00th=[ 92799], | 99.00th=[131597], 99.50th=[145753], 99.90th=[227541], 99.95th=[231736], | 99.99th=[231736] bw ( KiB/s): min= 15, max= 127, per=25.20%, avg=58.22, stdev=21.30, samples=211 iops : min= 3, max= 31, avg=13.94, stdev= 5.38, samples=211 lat (usec) : 50=0.23%, 100=0.98%, 250=0.26%, 500=0.07% lat (msec) : 2=6.09%, 4=5.37%, 10=7.36%, 20=12.40%, 50=44.01% lat (msec) : 100=20.70%, 250=2.47%, 500=0.03%, 750=0.03% cpu : usr=0.08%, sys=6.32%, ctx=6772, 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=179280: Thu Aug 27 14:10:59 2026 read: IOPS=14, BW=56.9KiB/s (58.2kB/s)(5940KiB/104450msec) clat (usec): min=34, max=206638, avg=38472.44, stdev=25284.89 lat (usec): min=34, max=206639, avg=38479.41, stdev=25294.22 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 9241], 10.00th=[ 14353], 20.00th=[ 19006], | 30.00th=[ 23725], 40.00th=[ 28181], 50.00th=[ 32900], 60.00th=[ 39060], | 70.00th=[ 46400], 80.00th=[ 54789], 90.00th=[ 69731], 95.00th=[ 84411], | 99.00th=[131597], 99.50th=[149947], 99.90th=[181404], 99.95th=[206570], | 99.99th=[206570] bw ( KiB/s): min= 7, max= 103, per=25.61%, avg=56.60, stdev=18.17, samples=205 iops : min= 1, max= 25, avg=13.53, stdev= 4.54, samples=205 write: IOPS=15, BW=60.8KiB/s (62.2kB/s)(6348KiB/104450msec); 0 zone resets clat (usec): min=996, max=567144, avg=29584.77, stdev=32573.60 lat (usec): min=997, max=567145, avg=29588.70, stdev=32572.78 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1303], 10.00th=[ 1893], 20.00th=[ 3687], | 30.00th=[ 6783], 40.00th=[ 13829], 50.00th=[ 21365], 60.00th=[ 29230], | 70.00th=[ 38011], 80.00th=[ 50070], 90.00th=[ 69731], 95.00th=[ 85459], | 99.00th=[131597], 99.50th=[156238], 99.90th=[274727], 99.95th=[566232], | 99.99th=[566232] bw ( KiB/s): min= 15, max= 119, per=26.16%, avg=60.42, stdev=22.85, samples=205 iops : min= 3, max= 29, avg=14.48, stdev= 5.75, samples=205 lat (usec) : 50=0.33%, 100=1.40%, 250=0.29%, 500=0.03%, 1000=0.07% lat (msec) : 2=5.60%, 4=5.70%, 10=7.45%, 20=14.32%, 50=42.58% lat (msec) : 100=19.60%, 250=2.57%, 500=0.03%, 750=0.03% cpu : usr=0.09%, sys=6.35%, ctx=6619, 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=179282: Thu Aug 27 14:10:59 2026 read: IOPS=13, BW=55.5KiB/s (56.9kB/s)(6028KiB/108557msec) clat (usec): min=37, max=259610, avg=38839.20, stdev=26357.80 lat (usec): min=37, max=259611, avg=38842.79, stdev=26356.30 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 10028], 10.00th=[ 14877], 20.00th=[ 20055], | 30.00th=[ 23987], 40.00th=[ 28705], 50.00th=[ 33817], 60.00th=[ 39060], | 70.00th=[ 45876], 80.00th=[ 54264], 90.00th=[ 68682], 95.00th=[ 84411], | 99.00th=[139461], 99.50th=[166724], 99.90th=[244319], 99.95th=[258999], | 99.99th=[258999] bw ( KiB/s): min= 7, max= 127, per=25.01%, avg=55.26, stdev=19.85, samples=212 iops : min= 1, max= 31, avg=13.19, stdev= 4.97, samples=212 write: IOPS=14, BW=57.7KiB/s (59.0kB/s)(6260KiB/108557msec); 0 zone resets clat (usec): min=936, max=766800, avg=31730.54, stdev=36243.53 lat (usec): min=938, max=766803, avg=31732.20, stdev=36243.48 clat percentiles (usec): | 1.00th=[ 1074], 5.00th=[ 1221], 10.00th=[ 1696], 20.00th=[ 3458], | 30.00th=[ 7242], 40.00th=[ 15533], 50.00th=[ 23462], 60.00th=[ 31327], | 70.00th=[ 42206], 80.00th=[ 53740], 90.00th=[ 74974], 95.00th=[ 92799], | 99.00th=[129500], 99.50th=[164627], 99.90th=[274727], 99.95th=[767558], | 99.99th=[767558] bw ( KiB/s): min= 7, max= 135, per=24.68%, avg=57.00, stdev=21.05, samples=213 iops : min= 1, max= 33, avg=13.63, stdev= 5.32, samples=213 lat (usec) : 50=0.26%, 100=1.43%, 250=0.36%, 500=0.07%, 750=0.03% lat (usec) : 1000=0.13% lat (msec) : 2=6.25%, 4=4.98%, 10=6.22%, 20=13.05%, 50=43.20% lat (msec) : 100=20.90%, 250=3.03%, 500=0.07%, 1000=0.03% cpu : usr=0.08%, sys=6.11%, ctx=6789, 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=179284: Thu Aug 27 14:10:59 2026 read: IOPS=14, BW=57.3KiB/s (58.7kB/s)(6052KiB/105660msec) clat (usec): min=37, max=195124, avg=37021.83, stdev=23965.47 lat (usec): min=37, max=195126, avg=37029.36, stdev=23961.81 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 1909], 10.00th=[ 13960], 20.00th=[ 18482], | 30.00th=[ 22938], 40.00th=[ 27395], 50.00th=[ 32113], 60.00th=[ 37487], | 70.00th=[ 44303], 80.00th=[ 52691], 90.00th=[ 67634], 95.00th=[ 80217], | 99.00th=[114820], 99.50th=[132645], 99.90th=[173016], 99.95th=[196084], | 99.99th=[196084] bw ( KiB/s): min= 7, max= 133, per=25.96%, avg=57.38, stdev=19.76, samples=207 iops : min= 1, max= 33, avg=13.73, stdev= 4.97, samples=207 write: IOPS=14, BW=59.0KiB/s (60.4kB/s)(6236KiB/105660msec); 0 zone resets clat (usec): min=900, max=753510, avg=31599.72, stdev=37735.68 lat (usec): min=902, max=753512, avg=31602.94, stdev=37737.99 clat percentiles (usec): | 1.00th=[ 1090], 5.00th=[ 1205], 10.00th=[ 1582], 20.00th=[ 3359], | 30.00th=[ 6063], 40.00th=[ 13566], 50.00th=[ 22676], 60.00th=[ 30278], | 70.00th=[ 40633], 80.00th=[ 53740], 90.00th=[ 74974], 95.00th=[ 95945], | 99.00th=[149947], 99.50th=[179307], 99.90th=[233833], 99.95th=[750781], | 99.99th=[750781] bw ( KiB/s): min= 7, max= 134, per=25.49%, avg=58.89, stdev=22.41, samples=208 iops : min= 1, max= 33, avg=14.10, stdev= 5.63, samples=208 lat (usec) : 50=0.39%, 100=1.53%, 250=0.29%, 500=0.07%, 750=0.07% lat (usec) : 1000=0.16% lat (msec) : 2=6.71%, 4=4.72%, 10=7.71%, 20=13.64%, 50=41.76% lat (msec) : 100=19.69%, 250=3.22%, 1000=0.03% cpu : usr=0.09%, sys=6.23%, ctx=6565, 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 (227kB/s), 55.5KiB/s-57.3KiB/s (56.9kB/s-58.7kB/s), io=23.4MiB (24.6MB), run=104450-108557msec WRITE: bw=232KiB/s (237kB/s), 57.7KiB/s-60.8KiB/s (59.0kB/s-62.2kB/s), io=24.6MiB (25.7MB), run=104450-108557msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179281: Thu Aug 27 14:11:32 2026 read: IOPS=10, BW=42.6KiB/s (43.6kB/s)(5992KiB/140813msec) clat (msec): min=4, max=583, avg=36.60, stdev=35.89 lat (msec): min=4, max=583, avg=36.60, stdev=35.89 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 31], | 70.00th=[ 37], 80.00th=[ 53], 90.00th=[ 83], 95.00th=[ 109], | 99.00th=[ 163], 99.50th=[ 184], 99.90th=[ 313], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 7, max= 166, per=25.32%, avg=42.78, stdev=29.39, samples=274 iops : min= 1, max= 41, avg=10.05, stdev= 7.39, samples=274 write: IOPS=11, BW=44.7KiB/s (45.8kB/s)(6296KiB/140813msec); 0 zone resets clat (msec): min=9, max=275, avg=54.43, stdev=37.04 lat (msec): min=9, max=275, avg=54.44, stdev=37.04 clat percentiles (msec): | 1.00th=[ 14], 5.00th=[ 19], 10.00th=[ 21], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 52], | 70.00th=[ 65], 80.00th=[ 81], 90.00th=[ 107], 95.00th=[ 128], | 99.00th=[ 180], 99.50th=[ 207], 99.90th=[ 271], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 7, max= 134, per=25.02%, avg=44.28, stdev=27.05, samples=278 iops : min= 1, max= 33, avg=10.43, stdev= 6.79, samples=278 lat (msec) : 10=3.55%, 20=19.47%, 50=45.61%, 100=22.62%, 250=8.59% lat (msec) : 500=0.13%, 750=0.03% cpu : usr=0.06%, sys=2.14%, ctx=4849, 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=179283: Thu Aug 27 14:11:32 2026 read: IOPS=10, BW=42.3KiB/s (43.3kB/s)(5940KiB/140374msec) clat (msec): min=5, max=705, avg=37.10, stdev=37.83 lat (msec): min=5, max=705, avg=37.11, stdev=37.83 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 55], 90.00th=[ 79], 95.00th=[ 108], | 99.00th=[ 171], 99.50th=[ 197], 99.90th=[ 309], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7, max= 158, per=25.16%, avg=42.52, stdev=29.01, samples=273 iops : min= 1, max= 39, avg= 9.99, stdev= 7.29, samples=273 write: IOPS=11, BW=45.2KiB/s (46.3kB/s)(6348KiB/140374msec); 0 zone resets clat (msec): min=9, max=341, avg=53.51, stdev=37.28 lat (msec): min=9, max=341, avg=53.52, stdev=37.28 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 18], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 63], 80.00th=[ 78], 90.00th=[ 105], 95.00th=[ 127], | 99.00th=[ 184], 99.50th=[ 218], 99.90th=[ 288], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 7, max= 136, per=25.42%, avg=45.00, stdev=27.15, samples=276 iops : min= 1, max= 34, avg=10.61, stdev= 6.82, samples=276 lat (msec) : 10=3.32%, 20=19.63%, 50=45.77%, 100=22.66%, 250=8.40% lat (msec) : 500=0.20%, 750=0.03% cpu : usr=0.06%, sys=2.13%, ctx=4872, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1485,1587,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179285: Thu Aug 27 14:11:32 2026 read: IOPS=10, BW=42.8KiB/s (43.8kB/s)(6028KiB/140915msec) clat (msec): min=4, max=312, avg=36.60, stdev=33.90 lat (msec): min=4, max=312, avg=36.60, stdev=33.90 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 9], 10.00th=[ 11], 20.00th=[ 14], | 30.00th=[ 17], 40.00th=[ 21], 50.00th=[ 25], 60.00th=[ 31], | 70.00th=[ 39], 80.00th=[ 53], 90.00th=[ 84], 95.00th=[ 107], | 99.00th=[ 163], 99.50th=[ 182], 99.90th=[ 268], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 7, max= 176, per=25.31%, avg=42.77, stdev=27.63, samples=275 iops : min= 1, max= 44, avg=10.05, stdev= 6.95, samples=275 write: IOPS=11, BW=44.4KiB/s (45.5kB/s)(6260KiB/140915msec); 0 zone resets clat (msec): min=10, max=739, avg=54.61, stdev=41.81 lat (msec): min=10, max=739, avg=54.61, stdev=41.80 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 50], | 70.00th=[ 63], 80.00th=[ 80], 90.00th=[ 105], 95.00th=[ 129], | 99.00th=[ 197], 99.50th=[ 241], 99.90th=[ 296], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 136, per=24.85%, avg=43.98, stdev=27.52, samples=278 iops : min= 1, max= 34, avg=10.36, stdev= 6.92, samples=278 lat (msec) : 10=3.84%, 20=18.91%, 50=46.91%, 100=21.61%, 250=8.43% lat (msec) : 500=0.26%, 750=0.03% cpu : usr=0.07%, sys=2.11%, ctx=4983, 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=179286: Thu Aug 27 14:11:32 2026 read: IOPS=10, BW=42.8KiB/s (43.8kB/s)(6052KiB/141454msec) clat (msec): min=5, max=266, avg=36.39, stdev=31.77 lat (msec): min=5, max=266, avg=36.40, stdev=31.77 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 10], 10.00th=[ 12], 20.00th=[ 15], | 30.00th=[ 18], 40.00th=[ 21], 50.00th=[ 26], 60.00th=[ 32], | 70.00th=[ 41], 80.00th=[ 53], 90.00th=[ 78], 95.00th=[ 104], | 99.00th=[ 161], 99.50th=[ 174], 99.90th=[ 218], 99.95th=[ 268], | 99.99th=[ 268] bw ( KiB/s): min= 7, max= 144, per=25.43%, avg=42.97, stdev=28.24, samples=275 iops : min= 1, max= 36, avg=10.10, stdev= 7.07, samples=275 write: IOPS=11, BW=44.1KiB/s (45.1kB/s)(6236KiB/141454msec); 0 zone resets clat (msec): min=10, max=736, avg=55.22, stdev=42.56 lat (msec): min=10, max=736, avg=55.22, stdev=42.56 clat percentiles (msec): | 1.00th=[ 15], 5.00th=[ 19], 10.00th=[ 22], 20.00th=[ 26], | 30.00th=[ 30], 40.00th=[ 35], 50.00th=[ 42], 60.00th=[ 51], | 70.00th=[ 64], 80.00th=[ 81], 90.00th=[ 109], 95.00th=[ 134], | 99.00th=[ 197], 99.50th=[ 232], 99.90th=[ 330], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 128, per=24.67%, avg=43.67, stdev=26.28, samples=278 iops : min= 1, max= 32, avg=10.28, stdev= 6.62, samples=278 lat (msec) : 10=3.55%, 20=19.17%, 50=46.06%, 100=22.49%, 250=8.53% lat (msec) : 500=0.16%, 750=0.03% cpu : usr=0.06%, sys=2.15%, ctx=4919, 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=170KiB/s (174kB/s), 42.3KiB/s-42.8KiB/s (43.3kB/s-43.8kB/s), io=23.4MiB (24.6MB), run=140374-141454msec WRITE: bw=178KiB/s (182kB/s), 44.1KiB/s-45.2KiB/s (45.1kB/s-46.3kB/s), io=24.6MiB (25.7MB), run=140374-141454msec 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=179327: Thu Aug 27 14:12:14 2026 read: IOPS=12, BW=196KiB/s (201kB/s)(5920KiB/30223msec) clat (usec): min=42, max=211611, avg=43669.33, stdev=30168.52 lat (usec): min=42, max=211613, avg=43687.62, stdev=30165.89 clat percentiles (usec): | 1.00th=[ 52], 5.00th=[ 62], 10.00th=[ 11207], 20.00th=[ 24249], | 30.00th=[ 29754], 40.00th=[ 34866], 50.00th=[ 38011], 60.00th=[ 43254], | 70.00th=[ 51119], 80.00th=[ 60031], 90.00th=[ 79168], 95.00th=[ 96994], | 99.00th=[160433], 99.50th=[204473], 99.90th=[210764], 99.95th=[210764], | 99.99th=[210764] bw ( KiB/s): min= 63, max= 401, per=25.66%, avg=194.51, stdev=66.68, samples=59 iops : min= 3, max= 25, avg=11.37, stdev= 4.20, samples=59 write: IOPS=13, BW=211KiB/s (216kB/s)(6368KiB/30223msec); 0 zone resets clat (usec): min=1478, max=156315, avg=34899.43, stdev=33180.39 lat (usec): min=1479, max=156317, avg=34904.12, stdev=33178.62 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1860], 10.00th=[ 3490], 20.00th=[ 6783], | 30.00th=[ 10945], 40.00th=[ 17695], 50.00th=[ 24511], 60.00th=[ 31589], | 70.00th=[ 44303], 80.00th=[ 60556], 90.00th=[ 87557], 95.00th=[105382], | 99.00th=[143655], 99.50th=[149947], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 62, max= 412, per=26.36%, avg=210.07, stdev=81.35, samples=59 iops : min= 3, max= 25, avg=12.36, stdev= 5.16, samples=59 lat (usec) : 50=0.26%, 100=4.17%, 250=0.26% lat (msec) : 2=2.60%, 4=3.52%, 10=8.85%, 20=10.68%, 50=41.02% lat (msec) : 100=23.31%, 250=5.34% cpu : usr=0.07%, sys=6.00%, ctx=1678, 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=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=179328: Thu Aug 27 14:12:14 2026 read: IOPS=12, BW=192KiB/s (197kB/s)(5744KiB/29904msec) clat (usec): min=46, max=220646, avg=43271.88, stdev=30148.05 lat (usec): min=47, max=220647, avg=43272.97, stdev=30148.05 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 61], 10.00th=[ 153], 20.00th=[ 23200], | 30.00th=[ 28443], 40.00th=[ 33817], 50.00th=[ 38536], 60.00th=[ 43779], | 70.00th=[ 53216], 80.00th=[ 62129], 90.00th=[ 73925], 95.00th=[ 96994], | 99.00th=[162530], 99.50th=[173016], 99.90th=[221250], 99.95th=[221250], | 99.99th=[221250] bw ( KiB/s): min= 31, max= 446, per=25.34%, avg=192.10, stdev=76.48, samples=59 iops : min= 1, max= 27, avg=11.20, stdev= 4.82, samples=59 write: IOPS=13, BW=219KiB/s (224kB/s)(6544KiB/29904msec); 0 zone resets clat (usec): min=1443, max=177092, avg=34222.46, stdev=32426.02 lat (usec): min=1446, max=177095, avg=34224.94, stdev=32425.72 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 2147], 10.00th=[ 3949], 20.00th=[ 6390], | 30.00th=[ 10159], 40.00th=[ 15926], 50.00th=[ 26084], 60.00th=[ 33817], | 70.00th=[ 43254], 80.00th=[ 58983], 90.00th=[ 77071], 95.00th=[100140], | 99.00th=[141558], 99.50th=[152044], 99.90th=[177210], 99.95th=[177210], | 99.99th=[177210] bw ( KiB/s): min= 31, max= 445, per=27.38%, avg=218.22, stdev=87.92, samples=59 iops : min= 1, max= 27, avg=12.86, stdev= 5.55, samples=59 lat (usec) : 50=0.13%, 100=4.43%, 250=0.26% lat (msec) : 2=2.08%, 4=3.52%, 10=10.03%, 20=10.81%, 50=39.19% lat (msec) : 100=24.87%, 250=4.69% cpu : usr=0.08%, sys=6.26%, ctx=1662, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179330: Thu Aug 27 14:12:14 2026 read: IOPS=12, BW=198KiB/s (203kB/s)(6256KiB/31594msec) clat (usec): min=39, max=234524, avg=45125.95, stdev=31655.80 lat (usec): min=39, max=234527, avg=45127.29, stdev=31656.05 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 61], 10.00th=[ 98], 20.00th=[ 23462], | 30.00th=[ 28705], 40.00th=[ 34866], 50.00th=[ 40633], 60.00th=[ 45876], | 70.00th=[ 55837], 80.00th=[ 64226], 90.00th=[ 84411], 95.00th=[101188], | 99.00th=[145753], 99.50th=[187696], 99.90th=[233833], 99.95th=[233833], | 99.99th=[233833] bw ( KiB/s): min= 64, max= 380, per=26.12%, avg=197.98, stdev=75.04, samples=62 iops : min= 4, max= 23, avg=11.60, stdev= 4.71, samples=62 write: IOPS=11, BW=191KiB/s (196kB/s)(6032KiB/31594msec); 0 zone resets clat (usec): min=1408, max=186104, avg=36486.23, stdev=35092.94 lat (usec): min=1409, max=186106, avg=36494.07, stdev=35089.62 clat percentiles (usec): | 1.00th=[ 1680], 5.00th=[ 2147], 10.00th=[ 3654], 20.00th=[ 6915], | 30.00th=[ 11731], 40.00th=[ 16909], 50.00th=[ 25822], 60.00th=[ 33817], | 70.00th=[ 44827], 80.00th=[ 63701], 90.00th=[ 91751], 95.00th=[112722], | 99.00th=[135267], 99.50th=[164627], 99.90th=[185598], 99.95th=[185598], | 99.99th=[185598] bw ( KiB/s): min= 61, max= 412, per=23.64%, avg=188.37, stdev=84.35, samples=62 iops : min= 3, max= 25, avg=10.97, stdev= 5.32, samples=62 lat (usec) : 50=0.52%, 100=4.69%, 250=0.26%, 750=0.26%, 1000=0.13% lat (msec) : 2=2.21%, 4=3.39%, 10=7.42%, 20=10.81%, 50=38.93% lat (msec) : 100=24.87%, 250=6.51% cpu : usr=0.09%, sys=5.74%, ctx=1703, 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=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=179331: Thu Aug 27 14:12:14 2026 read: IOPS=12, BW=199KiB/s (204kB/s)(6032KiB/30317msec) clat (usec): min=45, max=155490, avg=44739.93, stdev=29759.88 lat (usec): min=47, max=155491, avg=44740.99, stdev=29759.89 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 61], 10.00th=[ 127], 20.00th=[ 21103], | 30.00th=[ 28443], 40.00th=[ 34341], 50.00th=[ 40109], 60.00th=[ 47449], | 70.00th=[ 56361], 80.00th=[ 66323], 90.00th=[ 82314], 95.00th=[102237], | 99.00th=[137364], 99.50th=[149947], 99.90th=[156238], 99.95th=[156238], | 99.99th=[156238] bw ( KiB/s): min= 31, max= 370, per=25.85%, avg=195.95, stdev=66.08, samples=59 iops : min= 1, max= 23, avg=11.46, stdev= 4.21, samples=59 write: IOPS=12, BW=206KiB/s (211kB/s)(6256KiB/30317msec); 0 zone resets clat (usec): min=1428, max=230213, avg=34231.65, stdev=34347.63 lat (usec): min=1430, max=230215, avg=34241.48, stdev=34340.59 clat percentiles (usec): | 1.00th=[ 1532], 5.00th=[ 1958], 10.00th=[ 3064], 20.00th=[ 6128], | 30.00th=[ 10290], 40.00th=[ 16909], 50.00th=[ 25035], 60.00th=[ 33162], | 70.00th=[ 44303], 80.00th=[ 56886], 90.00th=[ 76022], 95.00th=[105382], | 99.00th=[154141], 99.50th=[175113], 99.90th=[229639], 99.95th=[229639], | 99.99th=[229639] bw ( KiB/s): min= 61, max= 382, per=25.59%, avg=203.97, stdev=76.49, samples=59 iops : min= 3, max= 23, avg=11.97, stdev= 4.85, samples=59 lat (usec) : 50=0.26%, 100=4.04%, 250=0.65% lat (msec) : 2=2.99%, 4=4.17%, 10=8.20%, 20=10.94%, 50=37.63% lat (msec) : 100=25.65%, 250=5.47% cpu : usr=0.07%, sys=6.01%, ctx=1709, 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=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=758KiB/s (776kB/s), 192KiB/s-199KiB/s (197kB/s-204kB/s), io=23.4MiB (24.5MB), run=29904-31594msec WRITE: bw=798KiB/s (817kB/s), 191KiB/s-219KiB/s (196kB/s-224kB/s), io=24.6MiB (25.8MB), run=29904-31594msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179332: Thu Aug 27 14:12:26 2026 read: IOPS=8, BW=136KiB/s (139kB/s)(5920KiB/43601msec) clat (msec): min=7, max=209, avg=44.08, stdev=36.92 lat (msec): min=7, max=209, avg=44.08, stdev=36.92 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 18], | 30.00th=[ 22], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 46], 80.00th=[ 63], 90.00th=[ 93], 95.00th=[ 128], | 99.00th=[ 188], 99.50th=[ 199], 99.90th=[ 209], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 30, max= 383, per=25.32%, avg=137.26, stdev=85.15, samples=85 iops : min= 1, max= 23, avg= 7.76, stdev= 5.39, samples=85 write: IOPS=9, BW=146KiB/s (150kB/s)(6368KiB/43601msec); 0 zone resets clat (msec): min=10, max=298, avg=68.35, stdev=46.09 lat (msec): min=10, max=298, avg=68.35, stdev=46.09 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 26], 10.00th=[ 29], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 45], 50.00th=[ 52], 60.00th=[ 64], | 70.00th=[ 79], 80.00th=[ 97], 90.00th=[ 133], 95.00th=[ 169], | 99.00th=[ 234], 99.50th=[ 247], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 28, max= 352, per=25.56%, avg=145.67, stdev=77.77, samples=86 iops : min= 1, max= 22, avg= 8.30, stdev= 4.95, samples=86 lat (msec) : 10=0.78%, 20=12.63%, 50=46.48%, 100=26.56%, 250=13.41% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=1.91%, ctx=1267, 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=179333: Thu Aug 27 14:12:26 2026 read: IOPS=8, BW=130KiB/s (133kB/s)(5744KiB/44182msec) clat (msec): min=6, max=269, avg=43.66, stdev=40.06 lat (msec): min=6, max=269, avg=43.66, stdev=40.06 clat percentiles (msec): | 1.00th=[ 8], 5.00th=[ 11], 10.00th=[ 14], 20.00th=[ 19], | 30.00th=[ 22], 40.00th=[ 26], 50.00th=[ 28], 60.00th=[ 35], | 70.00th=[ 45], 80.00th=[ 61], 90.00th=[ 97], 95.00th=[ 142], | 99.00th=[ 197], 99.50th=[ 234], 99.90th=[ 271], 99.95th=[ 271], | 99.99th=[ 271] bw ( KiB/s): min= 28, max= 378, per=25.17%, avg=136.42, stdev=87.03, samples=83 iops : min= 1, max= 23, avg= 7.72, stdev= 5.50, samples=83 write: IOPS=9, BW=148KiB/s (152kB/s)(6544KiB/44182msec); 0 zone resets clat (msec): min=15, max=356, avg=68.95, stdev=47.05 lat (msec): min=15, max=356, avg=68.95, stdev=47.05 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 24], 10.00th=[ 27], 20.00th=[ 34], | 30.00th=[ 39], 40.00th=[ 46], 50.00th=[ 56], 60.00th=[ 65], | 70.00th=[ 81], 80.00th=[ 100], 90.00th=[ 126], 95.00th=[ 159], | 99.00th=[ 224], 99.50th=[ 239], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 31, max= 415, per=25.91%, avg=147.67, stdev=84.06, samples=87 iops : min= 1, max= 25, avg= 8.43, stdev= 5.32, samples=87 lat (msec) : 10=1.69%, 20=11.33%, 50=45.18%, 100=27.21%, 250=14.19% lat (msec) : 500=0.39% cpu : usr=0.06%, sys=1.77%, ctx=1250, 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=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=179334: Thu Aug 27 14:12:26 2026 read: IOPS=8, BW=142KiB/s (146kB/s)(6256KiB/43972msec) clat (msec): min=7, max=236, avg=46.08, stdev=38.47 lat (msec): min=7, max=236, avg=46.09, stdev=38.49 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 15], 10.00th=[ 17], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 31], 60.00th=[ 39], | 70.00th=[ 48], 80.00th=[ 68], 90.00th=[ 96], 95.00th=[ 131], | 99.00th=[ 184], 99.50th=[ 226], 99.90th=[ 236], 99.95th=[ 236], | 99.99th=[ 236] bw ( KiB/s): min= 31, max= 537, per=26.26%, avg=142.35, stdev=95.73, samples=86 iops : min= 1, max= 33, avg= 8.09, stdev= 6.06, samples=86 write: IOPS=8, BW=137KiB/s (140kB/s)(6032KiB/43972msec); 0 zone resets clat (msec): min=15, max=429, avg=68.28, stdev=48.35 lat (msec): min=15, max=429, avg=68.28, stdev=48.35 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 25], 10.00th=[ 28], 20.00th=[ 35], | 30.00th=[ 42], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 64], | 70.00th=[ 75], 80.00th=[ 93], 90.00th=[ 124], 95.00th=[ 157], | 99.00th=[ 255], 99.50th=[ 330], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 31, max= 351, per=23.94%, avg=136.48, stdev=70.37, samples=85 iops : min= 1, max= 21, avg= 7.73, stdev= 4.48, samples=85 lat (msec) : 10=0.39%, 20=11.46%, 50=47.14%, 100=28.26%, 250=12.11% lat (msec) : 500=0.65% cpu : usr=0.06%, sys=1.79%, ctx=1196, 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=179335: Thu Aug 27 14:12:26 2026 read: IOPS=8, BW=138KiB/s (141kB/s)(6032KiB/43797msec) clat (msec): min=7, max=207, avg=44.52, stdev=36.80 lat (msec): min=7, max=207, avg=44.52, stdev=36.80 clat percentiles (msec): | 1.00th=[ 9], 5.00th=[ 13], 10.00th=[ 15], 20.00th=[ 20], | 30.00th=[ 23], 40.00th=[ 27], 50.00th=[ 32], 60.00th=[ 39], | 70.00th=[ 49], 80.00th=[ 64], 90.00th=[ 95], 95.00th=[ 130], | 99.00th=[ 182], 99.50th=[ 197], 99.90th=[ 207], 99.95th=[ 207], | 99.99th=[ 207] bw ( KiB/s): min= 31, max= 352, per=26.02%, avg=141.01, stdev=79.59, samples=83 iops : min= 1, max= 22, avg= 8.01, stdev= 5.04, samples=83 write: IOPS=8, BW=143KiB/s (146kB/s)(6256KiB/43797msec); 0 zone resets clat (msec): min=18, max=299, avg=68.42, stdev=44.13 lat (msec): min=18, max=299, avg=68.42, stdev=44.13 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 26], 10.00th=[ 32], 20.00th=[ 36], | 30.00th=[ 41], 40.00th=[ 46], 50.00th=[ 54], 60.00th=[ 63], | 70.00th=[ 79], 80.00th=[ 99], 90.00th=[ 126], 95.00th=[ 155], | 99.00th=[ 241], 99.50th=[ 247], 99.90th=[ 300], 99.95th=[ 300], | 99.99th=[ 300] bw ( KiB/s): min= 31, max= 347, per=24.97%, avg=142.31, stdev=77.43, samples=86 iops : min= 1, max= 21, avg= 8.09, stdev= 4.95, samples=86 lat (msec) : 10=0.91%, 20=11.07%, 50=46.61%, 100=27.60%, 250=13.67% lat (msec) : 500=0.13% cpu : usr=0.06%, sys=1.74%, ctx=1180, 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=542KiB/s (555kB/s), 130KiB/s-142KiB/s (133kB/s-146kB/s), io=23.4MiB (24.5MB), run=43601-44182msec WRITE: bw=570KiB/s (584kB/s), 137KiB/s-148KiB/s (140kB/s-152kB/s), io=24.6MiB (25.8MB), run=43601-44182msec 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=179349: Thu Aug 27 14:12:39 2026 read: IOPS=2, BW=2339KiB/s (2396kB/s)(7168KiB/3064msec) clat (msec): min=2, max=257, avg=139.89, stdev=94.84 lat (msec): min=2, max=257, avg=139.89, stdev=94.84 clat percentiles (msec): | 1.00th=[ 3], 5.00th=[ 3], 10.00th=[ 3], 20.00th=[ 15], | 30.00th=[ 159], 40.00th=[ 159], 50.00th=[ 180], 60.00th=[ 182], | 70.00th=[ 182], 80.00th=[ 186], 90.00th=[ 257], 95.00th=[ 257], | 99.00th=[ 257], 99.50th=[ 257], 99.90th=[ 257], 99.95th=[ 257], | 99.99th=[ 257] bw ( KiB/s): min= 1976, max= 4087, per=58.21%, avg=3043.25, stdev=1196.28, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=1, BW=1671KiB/s (1711kB/s)(5120KiB/3064msec); 0 zone resets clat (msec): min=230, max=560, avg=371.76, stdev=141.88 lat (msec): min=230, max=560, avg=371.84, stdev=141.88 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 230], 10.00th=[ 230], 20.00th=[ 230], | 30.00th=[ 232], 40.00th=[ 232], 50.00th=[ 397], 60.00th=[ 397], | 70.00th=[ 439], 80.00th=[ 439], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 2035, max= 3953, per=36.58%, avg=2677.00, stdev=1105.06, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (msec) : 4=8.33%, 20=8.33%, 250=50.00%, 500=25.00%, 750=8.33% cpu : usr=0.00%, sys=18.54%, ctx=266, 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=179351: Thu Aug 27 14:12:39 2026 read: IOPS=0, BW=523KiB/s (535kB/s)(2048KiB/3917msec) clat (usec): min=795, max=165763, avg=83279.75, stdev=116650.27 lat (usec): min=796, max=165765, avg=83281.15, stdev=116650.55 clat percentiles (usec): | 1.00th=[ 799], 5.00th=[ 799], 10.00th=[ 799], 20.00th=[ 799], | 30.00th=[ 799], 40.00th=[ 799], 50.00th=[ 799], 60.00th=[166724], | 70.00th=[166724], 80.00th=[166724], 90.00th=[166724], 95.00th=[166724], | 99.00th=[166724], 99.50th=[166724], 99.90th=[166724], 99.95th=[166724], | 99.99th=[166724] bw ( KiB/s): min= 1416, max= 2015, per=32.81%, avg=1715.50, stdev=423.56, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2614KiB/s (2677kB/s)(10.0MiB/3917msec); 0 zone resets clat (msec): min=122, max=1003, avg=351.48, stdev=254.94 lat (msec): min=122, max=1003, avg=351.56, stdev=254.94 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 180], | 30.00th=[ 222], 40.00th=[ 247], 50.00th=[ 249], 60.00th=[ 275], | 70.00th=[ 296], 80.00th=[ 414], 90.00th=[ 514], 95.00th=[ 1003], | 99.00th=[ 1003], 99.50th=[ 1003], 99.90th=[ 1003], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 1988, max= 6047, per=49.70%, avg=3637.60, stdev=1692.00, samples=5 iops : min= 1, max= 5, avg= 2.60, stdev= 1.67, samples=5 lat (usec) : 1000=8.33% lat (msec) : 250=50.00%, 500=25.00%, 750=8.33%, 2000=8.33% cpu : usr=0.00%, sys=20.17%, ctx=158, 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=179354: Thu Aug 27 14:12:39 2026 read: IOPS=1, BW=1747KiB/s (1789kB/s)(6144KiB/3516msec) clat (usec): min=464, max=431484, avg=159894.66, stdev=185185.56 lat (usec): min=465, max=431485, avg=159895.82, stdev=185185.40 clat percentiles (usec): | 1.00th=[ 465], 5.00th=[ 465], 10.00th=[ 465], 20.00th=[ 1598], | 30.00th=[ 1598], 40.00th=[ 6259], 50.00th=[ 6259], 60.00th=[217056], | 70.00th=[304088], 80.00th=[304088], 90.00th=[429917], 95.00th=[429917], | 99.00th=[429917], 99.50th=[429917], 99.90th=[429917], 99.95th=[429917], | 99.99th=[429917] bw ( KiB/s): min= 1825, max= 4071, per=47.41%, avg=2478.75, stdev=1065.41, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=1, BW=1747KiB/s (1789kB/s)(6144KiB/3516msec); 0 zone resets clat (msec): min=218, max=650, avg=419.83, stdev=183.63 lat (msec): min=218, max=650, avg=419.90, stdev=183.61 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 218], 10.00th=[ 218], 20.00th=[ 253], | 30.00th=[ 253], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 393], | 70.00th=[ 634], 80.00th=[ 634], 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= 2035, max= 3650, per=32.26%, avg=2361.20, stdev=720.47, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=8.33% lat (msec) : 2=8.33%, 10=8.33%, 250=16.67%, 500=41.67%, 750=16.67% cpu : usr=0.06%, sys=17.75%, ctx=142, 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=179355: Thu Aug 27 14:12:39 2026 read: IOPS=1, BW=1457KiB/s (1492kB/s)(5120KiB/3513msec) clat (usec): min=321, max=193308, avg=39145.50, stdev=86179.93 lat (usec): min=321, max=193309, avg=39146.45, stdev=86180.18 clat percentiles (usec): | 1.00th=[ 322], 5.00th=[ 322], 10.00th=[ 322], 20.00th=[ 322], | 30.00th=[ 611], 40.00th=[ 611], 50.00th=[ 635], 60.00th=[ 635], | 70.00th=[ 857], 80.00th=[ 857], 90.00th=[193987], 95.00th=[193987], | 99.00th=[193987], 99.50th=[193987], 99.90th=[193987], 99.95th=[193987], | 99.99th=[193987] bw ( KiB/s): min= 7353, max= 7353, per=100.00%, avg=7353.00, stdev= 0.00, samples=1 iops : min= 7, max= 7, avg= 7.00, stdev= 0.00, samples=1 write: IOPS=1, BW=2040KiB/s (2089kB/s)(7168KiB/3513msec); 0 zone resets clat (msec): min=238, max=705, avg=463.66, stdev=200.22 lat (msec): min=238, max=705, avg=463.73, stdev=200.21 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 239], 10.00th=[ 239], 20.00th=[ 264], | 30.00th=[ 264], 40.00th=[ 264], 50.00th=[ 575], 60.00th=[ 575], | 70.00th=[ 575], 80.00th=[ 625], 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= 1440, max= 4031, per=31.53%, avg=2307.40, stdev=996.16, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (usec) : 500=8.33%, 750=16.67%, 1000=8.33% lat (msec) : 250=16.67%, 500=16.67%, 750=33.33% cpu : usr=0.00%, sys=15.52%, ctx=100, 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=5228KiB/s (5354kB/s), 523KiB/s-2339KiB/s (535kB/s-2396kB/s), io=20.0MiB (20.0MB), run=3064-3917msec WRITE: bw=7320KiB/s (7496kB/s), 1671KiB/s-2614KiB/s (1711kB/s-2677kB/s), io=28.0MiB (29.4MB), run=3064-3917msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179348: Thu Aug 27 14:12:40 2026 read: IOPS=1, BW=1971KiB/s (2019kB/s)(7168KiB/3636msec) clat (msec): min=84, max=478, avg=222.11, stdev=146.56 lat (msec): min=84, max=478, avg=222.11, stdev=146.56 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 85], 10.00th=[ 85], 20.00th=[ 85], | 30.00th=[ 108], 40.00th=[ 108], 50.00th=[ 232], 60.00th=[ 239], | 70.00th=[ 239], 80.00th=[ 330], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 2048, max= 4219, per=81.61%, avg=3451.33, stdev=1217.11, samples=3 iops : min= 2, max= 4, avg= 3.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1408KiB/s (1442kB/s)(5120KiB/3636msec); 0 zone resets clat (msec): min=173, max=790, avg=406.98, stdev=238.10 lat (msec): min=173, max=790, avg=407.07, stdev=238.10 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 249], 40.00th=[ 249], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 793], 95.00th=[ 793], | 99.00th=[ 793], 99.50th=[ 793], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 1729, max= 4039, per=41.63%, avg=2464.75, stdev=1060.05, samples=4 iops : min= 1, max= 3, avg= 1.75, stdev= 0.96, samples=4 lat (msec) : 100=16.67%, 250=41.67%, 500=33.33%, 1000=8.33% cpu : usr=0.03%, sys=3.80%, ctx=74, majf=0, minf=11 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179350: Thu Aug 27 14:12:40 2026 read: IOPS=0, BW=438KiB/s (449kB/s)(2048KiB/4671msec) clat (msec): min=122, max=605, avg=363.98, stdev=341.25 lat (msec): min=122, max=605, avg=363.98, stdev=341.25 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 123], 10.00th=[ 123], 20.00th=[ 123], | 30.00th=[ 123], 40.00th=[ 123], 50.00th=[ 123], 60.00th=[ 609], | 70.00th=[ 609], 80.00th=[ 609], 90.00th=[ 609], 95.00th=[ 609], | 99.00th=[ 609], 99.50th=[ 609], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 1954, max= 2043, per=47.26%, avg=1998.50, stdev=62.93, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=2, BW=2192KiB/s (2245kB/s)(10.0MiB/4671msec); 0 zone resets clat (msec): min=94, max=892, avg=370.57, stdev=270.66 lat (msec): min=94, max=892, avg=370.65, stdev=270.65 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 95], 10.00th=[ 95], 20.00th=[ 142], | 30.00th=[ 148], 40.00th=[ 155], 50.00th=[ 305], 60.00th=[ 321], | 70.00th=[ 409], 80.00th=[ 506], 90.00th=[ 735], 95.00th=[ 894], | 99.00th=[ 894], 99.50th=[ 894], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 1729, max= 3908, per=38.90%, avg=2303.17, stdev=796.34, samples=6 iops : min= 1, max= 3, avg= 1.67, stdev= 0.82, samples=6 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=25.00%, 1000=8.33% cpu : usr=0.02%, sys=5.10%, ctx=120, 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=179352: Thu Aug 27 14:12:40 2026 read: IOPS=1, BW=1334KiB/s (1366kB/s)(6144KiB/4607msec) clat (msec): min=79, max=173, avg=119.64, stdev=36.42 lat (msec): min=79, max=173, avg=119.64, stdev=36.42 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 80], 10.00th=[ 80], 20.00th=[ 100], | 30.00th=[ 100], 40.00th=[ 104], 50.00th=[ 104], 60.00th=[ 108], | 70.00th=[ 157], 80.00th=[ 157], 90.00th=[ 174], 95.00th=[ 174], | 99.00th=[ 174], 99.50th=[ 174], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] bw ( KiB/s): min= 2043, max= 4096, per=79.19%, avg=3349.00, stdev=1134.93, samples=3 iops : min= 1, max= 4, avg= 2.67, stdev= 1.53, samples=3 write: IOPS=1, BW=1334KiB/s (1366kB/s)(6144KiB/4607msec); 0 zone resets clat (msec): min=111, max=872, avg=607.56, stdev=304.08 lat (msec): min=111, max=872, avg=607.99, stdev=304.44 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 111], 10.00th=[ 111], 20.00th=[ 376], | 30.00th=[ 376], 40.00th=[ 651], 50.00th=[ 651], 60.00th=[ 776], | 70.00th=[ 860], 80.00th=[ 860], 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= 1729, max= 2048, per=33.16%, avg=1963.40, stdev=136.80, samples=5 iops : min= 1, max= 2, avg= 1.20, stdev= 0.45, samples=5 lat (msec) : 100=16.67%, 250=41.67%, 500=8.33%, 750=8.33%, 1000=25.00% cpu : usr=0.00%, sys=6.51%, ctx=126, 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=179353: Thu Aug 27 14:12:40 2026 read: IOPS=1, BW=1057KiB/s (1083kB/s)(5120KiB/4842msec) clat (msec): min=73, max=677, avg=331.77, stdev=224.47 lat (msec): min=73, max=677, avg=331.77, stdev=224.47 clat percentiles (msec): | 1.00th=[ 74], 5.00th=[ 74], 10.00th=[ 74], 20.00th=[ 74], | 30.00th=[ 211], 40.00th=[ 211], 50.00th=[ 342], 60.00th=[ 342], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 2043, max= 3908, per=63.05%, avg=2666.33, stdev=1075.32, samples=3 iops : min= 1, max= 3, avg= 2.00, stdev= 1.00, samples=3 write: IOPS=1, BW=1480KiB/s (1516kB/s)(7168KiB/4842msec); 0 zone resets clat (msec): min=137, max=673, avg=415.48, stdev=234.52 lat (msec): min=137, max=673, avg=415.59, stdev=234.48 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 138], 10.00th=[ 138], 20.00th=[ 140], | 30.00th=[ 245], 40.00th=[ 245], 50.00th=[ 498], 60.00th=[ 592], | 70.00th=[ 592], 80.00th=[ 625], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 1729, max= 2048, per=33.10%, avg=1959.75, stdev=154.35, samples=4 iops : min= 1, max= 2, avg= 1.25, stdev= 0.50, samples=4 lat (msec) : 100=8.33%, 250=33.33%, 500=25.00%, 750=33.33% cpu : usr=0.00%, sys=6.36%, ctx=135, 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=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=4230KiB/s (4331kB/s), 438KiB/s-1971KiB/s (449kB/s-2019kB/s), io=20.0MiB (20.0MB), run=3636-4842msec WRITE: bw=5922KiB/s (6064kB/s), 1334KiB/s-2192KiB/s (1366kB/s-2245kB/s), io=28.0MiB (29.4MB), run=3636-4842msec 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=179362: Thu Aug 27 14:12:53 2026 read: IOPS=1, BW=5813KiB/s (5952kB/s)(12.0MiB/2114msec) clat (msec): min=634, max=714, avg=677.52, stdev=40.71 lat (msec): min=634, max=714, avg=677.52, stdev=40.71 clat percentiles (msec): | 1.00th=[ 634], 5.00th=[ 634], 10.00th=[ 634], 20.00th=[ 634], | 30.00th=[ 634], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 718], 80.00th=[ 718], 90.00th=[ 718], 95.00th=[ 718], | 99.00th=[ 718], 99.50th=[ 718], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 8126, max= 8192, per=100.00%, avg=8159.00, stdev=46.67, samples=2 iops : min= 1, max= 2, avg= 1.50, stdev= 0.71, samples=2 lat (msec) : 750=100.00% cpu : usr=0.00%, sys=20.02%, ctx=403, 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=179363: Thu Aug 27 14:12:53 2026 read: IOPS=0, BW=1293KiB/s (1324kB/s)(4096KiB/3169msec) clat (nsec): min=532456k, max=532456k, avg=532456004.00, stdev= 0.00 lat (nsec): min=532458k, max=532458k, avg=532458394.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 531], 5.00th=[ 531], 10.00th=[ 531], 20.00th=[ 531], | 30.00th=[ 531], 40.00th=[ 531], 50.00th=[ 531], 60.00th=[ 531], | 70.00th=[ 531], 80.00th=[ 531], 90.00th=[ 531], 95.00th=[ 531], | 99.00th=[ 531], 99.50th=[ 531], 99.90th=[ 531], 99.95th=[ 531], | 99.99th=[ 531] bw ( KiB/s): min= 8126, max= 8126, per=100.00%, avg=8126.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2585KiB/s (2647kB/s)(8192KiB/3169msec); 0 zone resets clat (msec): min=656, max=1899, avg=1278.05, stdev=878.40 lat (msec): min=658, max=1902, avg=1280.69, stdev=879.34 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=[ 1905], | 70.00th=[ 1905], 80.00th=[ 1905], 90.00th=[ 1905], 95.00th=[ 1905], | 99.00th=[ 1905], 99.50th=[ 1905], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 8192, max= 8192, per=79.23%, avg=8192.00, stdev= 0.00, samples=1 iops : min= 2, max= 2, avg= 2.00, stdev= 0.00, samples=1 lat (msec) : 750=66.67%, 2000=33.33% cpu : usr=0.06%, sys=4.01%, ctx=213, 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=179365: Thu Aug 27 14:12:53 2026 write: IOPS=0, BW=3959KiB/s (4054kB/s)(12.0MiB/3104msec); 0 zone resets clat (msec): min=199, max=2137, avg=1001.48, stdev=1011.45 lat (msec): min=199, max=2137, avg=1001.79, stdev=1011.50 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 199], 10.00th=[ 199], 20.00th=[ 199], | 30.00th=[ 199], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 2140], 80.00th=[ 2140], 90.00th=[ 2140], 95.00th=[ 2140], | 99.00th=[ 2140], 99.50th=[ 2140], 99.90th=[ 2140], 99.95th=[ 2140], | 99.99th=[ 2140] bw ( KiB/s): min= 8192, max= 8192, per=79.23%, 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%, 750=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=5.54%, ctx=94, 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=179367: Thu Aug 27 14:12:53 2026 write: IOPS=1, BW=4485KiB/s (4592kB/s)(12.0MiB/2740msec); 0 zone resets clat (msec): min=727, max=1096, avg=901.73, stdev=185.54 lat (msec): min=728, max=1096, avg=902.35, stdev=185.06 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 885], 50.00th=[ 885], 60.00th=[ 885], | 70.00th=[ 1099], 80.00th=[ 1099], 90.00th=[ 1099], 95.00th=[ 1099], | 99.00th=[ 1099], 99.50th=[ 1099], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 8126, max= 8175, per=78.82%, avg=8150.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=5.22%, ctx=46, 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=5170KiB/s (5294kB/s), 1293KiB/s-5813KiB/s (1324kB/s-5952kB/s), io=16.0MiB (16.8MB), run=2114-3169msec WRITE: bw=10.1MiB/s (10.6MB/s), 2585KiB/s-4485KiB/s (2647kB/s-4592kB/s), io=32.0MiB (33.6MB), run=2740-3169msec rand-rw: (groupid=0, jobs=1): err= 0: pid=179364: Thu Aug 27 14:12:53 2026 read: IOPS=1, BW=5718KiB/s (5855kB/s)(12.0MiB/2149msec) clat (msec): min=667, max=748, avg=701.43, stdev=41.67 lat (msec): min=667, max=748, avg=701.43, stdev=41.67 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 693], 50.00th=[ 693], 60.00th=[ 693], | 70.00th=[ 751], 80.00th=[ 751], 90.00th=[ 751], 95.00th=[ 751], | 99.00th=[ 751], 99.50th=[ 751], 99.90th=[ 751], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7148, max= 8015, per=100.00%, avg=7581.50, stdev=613.06, 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=4.66%, ctx=58, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=3,0,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179366: Thu Aug 27 14:12:53 2026 read: IOPS=0, BW=1262KiB/s (1293kB/s)(4096KiB/3245msec) clat (nsec): min=1605.9M, max=1605.9M, avg=1605910831.00, stdev= 0.00 lat (nsec): min=1605.9M, max=1605.9M, avg=1605912871.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 1603], 5.00th=[ 1603], 10.00th=[ 1603], 20.00th=[ 1603], | 30.00th=[ 1603], 40.00th=[ 1603], 50.00th=[ 1603], 60.00th=[ 1603], | 70.00th=[ 1603], 80.00th=[ 1603], 90.00th=[ 1603], 95.00th=[ 1603], | 99.00th=[ 1603], 99.50th=[ 1603], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 8031, max= 8031, per=100.00%, avg=8031.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=2524KiB/s (2585kB/s)(8192KiB/3245msec); 0 zone resets clat (msec): min=583, max=968, avg=775.94, stdev=272.76 lat (msec): min=583, max=969, avg=776.29, stdev=272.68 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 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= 8126, max= 8126, per=80.48%, avg=8126.00, 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=0.06%, sys=3.79%, 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=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=179368: Thu Aug 27 14:12:53 2026 write: IOPS=1, BW=4262KiB/s (4365kB/s)(12.0MiB/2883msec); 0 zone resets clat (msec): min=346, max=1995, avg=930.62, stdev=923.62 lat (msec): min=346, max=1995, avg=930.90, stdev=923.56 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 451], 50.00th=[ 451], 60.00th=[ 451], | 70.00th=[ 1989], 80.00th=[ 1989], 90.00th=[ 1989], 95.00th=[ 1989], | 99.00th=[ 1989], 99.50th=[ 1989], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 8126, max= 8175, per=80.72%, avg=8150.50, stdev=34.65, 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=4.51%, ctx=48, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=179369: Thu Aug 27 14:12:53 2026 write: IOPS=1, BW=4279KiB/s (4381kB/s)(12.0MiB/2872msec); 0 zone resets clat (msec): min=746, max=1260, avg=921.59, stdev=293.34 lat (msec): min=746, max=1260, avg=921.95, stdev=293.31 clat percentiles (msec): | 1.00th=[ 743], 5.00th=[ 743], 10.00th=[ 743], 20.00th=[ 743], | 30.00th=[ 743], 40.00th=[ 760], 50.00th=[ 760], 60.00th=[ 760], | 70.00th=[ 1267], 80.00th=[ 1267], 90.00th=[ 1267], 95.00th=[ 1267], | 99.00th=[ 1267], 99.50th=[ 1267], 99.90th=[ 1267], 99.95th=[ 1267], | 99.99th=[ 1267] bw ( KiB/s): min= 8031, max= 8175, per=80.25%, avg=8103.00, stdev=101.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 1000=33.33%, 2000=33.33% cpu : usr=0.00%, sys=4.70%, ctx=67, majf=0, minf=8 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=5049KiB/s (5170kB/s), 1262KiB/s-5718KiB/s (1293kB/s-5855kB/s), io=16.0MiB (16.8MB), run=2149-3245msec WRITE: bw=9.86MiB/s (10.3MB/s), 2524KiB/s-4279KiB/s (2585kB/s-4381kB/s), io=32.0MiB (33.6MB), run=2872-3245msec