== sanity test 398b: DIO and buffer IO race ============== 14:33:32 (1785954812) /usr/bin/fio 48+0 records in 48+0 records out 50331648 bytes (50 MB, 48 MiB) copied, 8.1069 s, 6.2 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=178479: Wed Aug 5 14:37:00 2026 read: IOPS=8, BW=32.8KiB/s (33.6kB/s)(5992KiB/182551msec) clat (usec): min=26, max=1281.9k, avg=69176.22, stdev=55017.09 lat (usec): min=26, max=1281.9k, avg=69177.66, stdev=55017.05 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 15139], 10.00th=[ 24773], | 20.00th=[ 34341], 30.00th=[ 41157], 40.00th=[ 49546], | 50.00th=[ 58983], 60.00th=[ 69731], 70.00th=[ 82314], | 80.00th=[ 99091], 90.00th=[ 123208], 95.00th=[ 145753], | 99.00th=[ 246416], 99.50th=[ 274727], 99.90th=[ 367002], | 99.95th=[1283458], 99.99th=[1283458] bw ( KiB/s): min= 7, max= 79, per=24.95%, avg=32.68, stdev=14.16, samples=353 iops : min= 1, max= 19, avg= 7.48, stdev= 3.58, samples=353 write: IOPS=8, BW=34.5KiB/s (35.3kB/s)(6296KiB/182551msec); 0 zone resets clat (usec): min=1011, max=381113, avg=50063.20, stdev=52165.70 lat (usec): min=1012, max=381115, avg=50064.70, stdev=52165.71 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1237], 10.00th=[ 1352], 20.00th=[ 5276], | 30.00th=[ 10814], 40.00th=[ 21890], 50.00th=[ 35914], 60.00th=[ 49546], | 70.00th=[ 66323], 80.00th=[ 84411], 90.00th=[120062], 95.00th=[152044], | 99.00th=[227541], 99.50th=[270533], 99.90th=[308282], 99.95th=[379585], | 99.99th=[379585] bw ( KiB/s): min= 7, max= 95, per=25.11%, avg=34.41, stdev=17.94, samples=352 iops : min= 1, max= 23, avg= 7.93, stdev= 4.53, samples=352 lat (usec) : 50=0.59%, 100=1.24% lat (msec) : 2=6.84%, 4=1.66%, 10=6.35%, 20=6.61%, 50=27.25% lat (msec) : 100=31.93%, 250=16.76%, 500=0.75%, 2000=0.03% cpu : usr=0.04%, sys=3.16%, ctx=5997, 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=178480: Wed Aug 5 14:37:00 2026 read: IOPS=8, BW=32.7KiB/s (33.5kB/s)(5940KiB/181725msec) clat (usec): min=39, max=1406.2k, avg=68341.49, stdev=55161.29 lat (usec): min=39, max=1406.2k, avg=68344.02, stdev=55161.52 clat percentiles (usec): | 1.00th=[ 49], 5.00th=[ 17957], 10.00th=[ 25560], | 20.00th=[ 34341], 30.00th=[ 42206], 40.00th=[ 50594], | 50.00th=[ 58459], 60.00th=[ 67634], 70.00th=[ 80217], | 80.00th=[ 95945], 90.00th=[ 122160], 95.00th=[ 147850], | 99.00th=[ 221250], 99.50th=[ 252707], 99.90th=[ 392168], | 99.95th=[1400898], 99.99th=[1400898] bw ( KiB/s): min= 7, max= 80, per=24.85%, avg=32.55, stdev=13.95, samples=352 iops : min= 1, max= 20, avg= 7.45, stdev= 3.52, samples=352 write: IOPS=8, BW=34.9KiB/s (35.8kB/s)(6348KiB/181725msec); 0 zone resets clat (usec): min=1009, max=341578, avg=50448.03, stdev=53886.02 lat (usec): min=1010, max=341579, avg=50451.53, stdev=53888.31 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1221], 10.00th=[ 1319], 20.00th=[ 4359], | 30.00th=[ 9634], 40.00th=[ 21365], 50.00th=[ 34341], 60.00th=[ 49546], | 70.00th=[ 65274], 80.00th=[ 88605], 90.00th=[125305], 95.00th=[160433], | 99.00th=[227541], 99.50th=[270533], 99.90th=[337642], 99.95th=[341836], | 99.99th=[341836] bw ( KiB/s): min= 7, max= 95, per=25.54%, avg=34.99, stdev=17.21, samples=350 iops : min= 1, max= 23, avg= 8.08, stdev= 4.36, samples=350 lat (usec) : 50=0.52%, 100=1.27%, 250=0.07% lat (msec) : 2=7.71%, 4=2.12%, 10=6.02%, 20=5.27%, 50=27.02% lat (msec) : 100=32.49%, 250=16.86%, 500=0.62%, 2000=0.03% cpu : usr=0.05%, sys=3.07%, ctx=5709, 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=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=178481: Wed Aug 5 14:37:00 2026 read: IOPS=8, BW=32.9KiB/s (33.7kB/s)(6028KiB/183052msec) clat (usec): min=38, max=371863, avg=67575.38, stdev=43567.36 lat (usec): min=38, max=371865, avg=67576.80, stdev=43567.27 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 16450], 10.00th=[ 25297], 20.00th=[ 34341], | 30.00th=[ 42206], 40.00th=[ 50594], 50.00th=[ 58459], 60.00th=[ 68682], | 70.00th=[ 80217], 80.00th=[ 94897], 90.00th=[123208], 95.00th=[145753], | 99.00th=[225444], 99.50th=[254804], 99.90th=[308282], 99.95th=[371196], | 99.99th=[371196] bw ( KiB/s): min= 7, max= 77, per=24.99%, avg=32.73, stdev=14.81, samples=354 iops : min= 1, max= 19, avg= 7.50, stdev= 3.75, samples=354 write: IOPS=8, BW=34.2KiB/s (35.0kB/s)(6260KiB/183052msec); 0 zone resets clat (usec): min=903, max=1402.6k, avg=51778.19, stdev=62471.17 lat (usec): min=904, max=1402.6k, avg=51781.00, stdev=62470.86 clat percentiles (usec): | 1.00th=[ 1123], 5.00th=[ 1237], 10.00th=[ 1319], | 20.00th=[ 4424], 30.00th=[ 10159], 40.00th=[ 23200], | 50.00th=[ 36963], 60.00th=[ 50070], 70.00th=[ 66323], | 80.00th=[ 88605], 90.00th=[ 126354], 95.00th=[ 158335], | 99.00th=[ 221250], 99.50th=[ 240124], 99.90th=[ 283116], | 99.95th=[1400898], 99.99th=[1400898] bw ( KiB/s): min= 7, max= 87, per=24.71%, avg=33.86, stdev=16.74, samples=355 iops : min= 1, max= 21, avg= 7.79, stdev= 4.22, samples=355 lat (usec) : 50=0.26%, 100=1.46%, 1000=0.03% lat (msec) : 2=7.42%, 4=2.28%, 10=5.60%, 20=5.44%, 50=27.38% lat (msec) : 100=33.07%, 250=16.54%, 500=0.49%, 2000=0.03% cpu : usr=0.06%, sys=3.14%, ctx=5957, majf=0, minf=16 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1507,1565,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178482: Wed Aug 5 14:37:00 2026 read: IOPS=8, BW=33.1KiB/s (33.9kB/s)(6052KiB/183035msec) clat (usec): min=33, max=332443, avg=68235.97, stdev=43001.28 lat (usec): min=33, max=332444, avg=68237.16, stdev=43001.28 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 17957], 10.00th=[ 25560], 20.00th=[ 34866], | 30.00th=[ 42730], 40.00th=[ 52167], 50.00th=[ 60031], 60.00th=[ 69731], | 70.00th=[ 80217], 80.00th=[ 95945], 90.00th=[123208], 95.00th=[147850], | 99.00th=[210764], 99.50th=[252707], 99.90th=[295699], 99.95th=[333448], | 99.99th=[333448] bw ( KiB/s): min= 7, max= 79, per=25.26%, avg=33.09, stdev=14.07, samples=351 iops : min= 1, max= 19, avg= 7.60, stdev= 3.56, samples=351 write: IOPS=8, BW=34.1KiB/s (34.9kB/s)(6236KiB/183035msec); 0 zone resets clat (usec): min=965, max=1402.8k, avg=51103.30, stdev=62081.21 lat (usec): min=966, max=1402.8k, avg=51106.08, stdev=62081.01 clat percentiles (usec): | 1.00th=[ 1106], 5.00th=[ 1237], 10.00th=[ 1352], | 20.00th=[ 5145], 30.00th=[ 10814], 40.00th=[ 22676], | 50.00th=[ 35390], 60.00th=[ 49546], 70.00th=[ 65274], | 80.00th=[ 87557], 90.00th=[ 125305], 95.00th=[ 152044], | 99.00th=[ 221250], 99.50th=[ 250610], 99.90th=[ 333448], | 99.95th=[1400898], 99.99th=[1400898] bw ( KiB/s): min= 7, max= 143, per=24.69%, avg=33.82, stdev=18.34, samples=354 iops : min= 1, max= 35, avg= 7.77, stdev= 4.61, samples=354 lat (usec) : 50=0.52%, 100=1.30%, 250=0.07%, 750=0.03%, 1000=0.03% lat (msec) : 2=7.13%, 4=1.76%, 10=5.86%, 20=5.63%, 50=27.18% lat (msec) : 100=33.27%, 250=16.70%, 500=0.49%, 2000=0.03% cpu : usr=0.05%, sys=3.09%, ctx=5919, majf=0, minf=18 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=131KiB/s (134kB/s), 32.7KiB/s-33.1KiB/s (33.5kB/s-33.9kB/s), io=23.4MiB (24.6MB), run=181725-183052msec WRITE: bw=137KiB/s (141kB/s), 34.1KiB/s-34.9KiB/s (34.9kB/s-35.8kB/s), io=24.6MiB (25.7MB), run=181725-183052msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178474: Wed Aug 5 14:38:06 2026 read: IOPS=6, BW=24.1KiB/s (24.7kB/s)(5992KiB/248571msec) clat (msec): min=5, max=1387, avg=67.01, stdev=68.30 lat (msec): min=5, max=1387, avg=67.01, stdev=68.30 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 26], | 30.00th=[ 32], 40.00th=[ 38], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 96], 90.00th=[ 144], 95.00th=[ 188], | 99.00th=[ 305], 99.50th=[ 334], 99.90th=[ 498], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 7, max= 95, per=26.75%, avg=25.68, stdev=16.77, samples=447 iops : min= 1, max= 23, avg= 5.73, stdev= 4.21, samples=447 write: IOPS=6, BW=25.3KiB/s (25.9kB/s)(6296KiB/248571msec); 0 zone resets clat (msec): min=10, max=713, avg=93.77, stdev=68.34 lat (msec): min=10, max=713, avg=93.78, stdev=68.34 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 28], 10.00th=[ 34], 20.00th=[ 45], | 30.00th=[ 53], 40.00th=[ 63], 50.00th=[ 73], 60.00th=[ 88], | 70.00th=[ 108], 80.00th=[ 133], 90.00th=[ 182], 95.00th=[ 228], | 99.00th=[ 368], 99.50th=[ 405], 99.90th=[ 435], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 119, per=25.67%, avg=25.67, stdev=15.66, samples=469 iops : min= 1, max= 29, avg= 5.73, stdev= 3.94, samples=469 lat (msec) : 10=0.59%, 20=5.86%, 50=34.02%, 100=33.37%, 250=23.14% lat (msec) : 500=2.96%, 750=0.03%, 2000=0.03% cpu : usr=0.03%, sys=1.34%, ctx=4680, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1498,1574,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178475: Wed Aug 5 14:38:06 2026 read: IOPS=5, BW=23.9KiB/s (24.5kB/s)(5940KiB/248578msec) clat (msec): min=5, max=1481, avg=66.97, stdev=72.36 lat (msec): min=5, max=1481, avg=66.97, stdev=72.36 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 26], | 30.00th=[ 31], 40.00th=[ 38], 50.00th=[ 46], 60.00th=[ 57], | 70.00th=[ 70], 80.00th=[ 93], 90.00th=[ 146], 95.00th=[ 184], | 99.00th=[ 309], 99.50th=[ 359], 99.90th=[ 735], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 7, max= 117, per=26.45%, avg=25.39, stdev=16.94, samples=449 iops : min= 1, max= 29, avg= 5.66, stdev= 4.27, samples=449 write: IOPS=6, BW=25.5KiB/s (26.1kB/s)(6348KiB/248578msec); 0 zone resets clat (msec): min=12, max=454, avg=93.58, stdev=64.05 lat (msec): min=12, max=454, avg=93.58, stdev=64.05 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 30], 10.00th=[ 36], 20.00th=[ 45], | 30.00th=[ 54], 40.00th=[ 63], 50.00th=[ 73], 60.00th=[ 89], | 70.00th=[ 108], 80.00th=[ 134], 90.00th=[ 176], 95.00th=[ 222], | 99.00th=[ 317], 99.50th=[ 409], 99.90th=[ 447], 99.95th=[ 456], | 99.99th=[ 456] bw ( KiB/s): min= 7, max= 95, per=25.93%, avg=25.93, stdev=15.08, samples=470 iops : min= 1, max= 23, avg= 5.79, stdev= 3.80, samples=470 lat (msec) : 10=0.59%, 20=5.63%, 50=33.20%, 100=34.70%, 250=23.21% lat (msec) : 500=2.57%, 750=0.07%, 2000=0.03% cpu : usr=0.03%, sys=1.18%, ctx=4468, 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=178476: Wed Aug 5 14:38:06 2026 read: IOPS=6, BW=24.3KiB/s (24.9kB/s)(6028KiB/247983msec) clat (msec): min=6, max=501, avg=66.89, stdev=58.94 lat (msec): min=6, max=501, avg=66.89, stdev=58.94 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 16], 10.00th=[ 19], 20.00th=[ 27], | 30.00th=[ 33], 40.00th=[ 39], 50.00th=[ 47], 60.00th=[ 57], | 70.00th=[ 71], 80.00th=[ 96], 90.00th=[ 146], 95.00th=[ 192], | 99.00th=[ 288], 99.50th=[ 317], 99.90th=[ 397], 99.95th=[ 502], | 99.99th=[ 502] bw ( KiB/s): min= 7, max= 95, per=25.99%, avg=24.95, stdev=16.79, samples=462 iops : min= 1, max= 23, avg= 5.54, stdev= 4.22, samples=462 write: IOPS=6, BW=25.2KiB/s (25.8kB/s)(6260KiB/247983msec); 0 zone resets clat (msec): min=10, max=1511, avg=93.65, stdev=74.07 lat (msec): min=10, max=1511, avg=93.65, stdev=74.07 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 28], 10.00th=[ 33], 20.00th=[ 43], | 30.00th=[ 53], 40.00th=[ 63], 50.00th=[ 74], 60.00th=[ 89], | 70.00th=[ 109], 80.00th=[ 133], 90.00th=[ 182], 95.00th=[ 213], | 99.00th=[ 313], 99.50th=[ 376], 99.90th=[ 768], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 7, max= 87, per=25.49%, avg=25.49, stdev=15.72, samples=470 iops : min= 1, max= 21, avg= 5.68, stdev= 3.96, samples=470 lat (msec) : 10=0.39%, 20=5.66%, 50=33.98%, 100=33.50%, 250=24.02% lat (msec) : 500=2.34%, 750=0.03%, 1000=0.03%, 2000=0.03% cpu : usr=0.03%, sys=1.26%, ctx=4681, 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=178477: Wed Aug 5 14:38:06 2026 read: IOPS=6, BW=24.3KiB/s (24.9kB/s)(6052KiB/248983msec) clat (msec): min=5, max=397, avg=65.64, stdev=57.35 lat (msec): min=5, max=397, avg=65.64, stdev=57.36 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 14], 10.00th=[ 19], 20.00th=[ 26], | 30.00th=[ 33], 40.00th=[ 40], 50.00th=[ 47], 60.00th=[ 56], | 70.00th=[ 70], 80.00th=[ 92], 90.00th=[ 140], 95.00th=[ 192], | 99.00th=[ 279], 99.50th=[ 317], 99.90th=[ 384], 99.95th=[ 397], | 99.99th=[ 397] bw ( KiB/s): min= 7, max= 111, per=27.20%, avg=26.11, stdev=16.59, samples=444 iops : min= 1, max= 27, avg= 5.84, stdev= 4.18, samples=444 write: IOPS=6, BW=25.0KiB/s (25.6kB/s)(6236KiB/248983msec); 0 zone resets clat (msec): min=13, max=1506, avg=95.61, stdev=77.32 lat (msec): min=13, max=1506, avg=95.61, stdev=77.32 clat percentiles (msec): | 1.00th=[ 20], 5.00th=[ 29], 10.00th=[ 35], 20.00th=[ 44], | 30.00th=[ 53], 40.00th=[ 64], 50.00th=[ 73], 60.00th=[ 88], | 70.00th=[ 109], 80.00th=[ 140], 90.00th=[ 182], 95.00th=[ 220], | 99.00th=[ 363], 99.50th=[ 426], 99.90th=[ 768], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 7, max= 95, per=25.19%, avg=25.19, stdev=15.27, samples=472 iops : min= 1, max= 23, avg= 5.60, stdev= 3.84, samples=472 lat (msec) : 10=0.75%, 20=5.53%, 50=33.76%, 100=34.34%, 250=23.18% lat (msec) : 500=2.34%, 750=0.03%, 1000=0.03%, 2000=0.03% cpu : usr=0.03%, sys=1.23%, ctx=4584, majf=0, minf=15 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1513,1559,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=96.4KiB/s (98.8kB/s), 23.9KiB/s-24.3KiB/s (24.5kB/s-24.9kB/s), io=23.4MiB (24.6MB), run=247983-248983msec WRITE: bw=101KiB/s (103kB/s), 25.0KiB/s-25.5KiB/s (25.6kB/s-26.1kB/s), io=24.6MiB (25.7MB), run=247983-248983msec 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=178540: Wed Aug 5 14:39:31 2026 read: IOPS=5, BW=89.9KiB/s (92.0kB/s)(5920KiB/65872msec) clat (usec): min=40, max=588690, avg=97075.71, stdev=75034.48 lat (usec): min=40, max=588692, avg=97082.61, stdev=75044.07 clat percentiles (usec): | 1.00th=[ 55], 5.00th=[ 65], 10.00th=[ 30802], 20.00th=[ 47449], | 30.00th=[ 59507], 40.00th=[ 69731], 50.00th=[ 85459], 60.00th=[ 94897], | 70.00th=[108528], 80.00th=[135267], 90.00th=[173016], 95.00th=[223347], | 99.00th=[429917], 99.50th=[471860], 99.90th=[591397], 99.95th=[591397], | 99.99th=[591397] bw ( KiB/s): min= 27, max= 221, per=25.79%, avg=93.36, stdev=45.54, samples=121 iops : min= 1, max= 13, avg= 5.08, stdev= 2.88, samples=121 write: IOPS=6, BW=96.7KiB/s (98.0kB/s)(6368KiB/65872msec); 0 zone resets clat (usec): min=1542, max=457615, avg=73836.13, stdev=75367.23 lat (usec): min=1544, max=457616, avg=73837.98, stdev=75367.22 clat percentiles (usec): | 1.00th=[ 1663], 5.00th=[ 1893], 10.00th=[ 6980], 20.00th=[ 14222], | 30.00th=[ 24249], 40.00th=[ 35390], 50.00th=[ 49546], 60.00th=[ 65274], | 70.00th=[ 92799], 80.00th=[129500], 90.00th=[164627], 95.00th=[221250], | 99.00th=[396362], 99.50th=[438305], 99.90th=[459277], 99.95th=[459277], | 99.99th=[459277] bw ( KiB/s): min= 24, max= 250, per=26.43%, avg=100.42, stdev=55.12, samples=122 iops : min= 1, max= 15, avg= 5.53, stdev= 3.52, samples=122 lat (usec) : 50=0.39%, 100=2.86%, 250=0.13%, 500=0.13% lat (msec) : 2=2.86%, 4=0.26%, 10=4.30%, 20=7.03%, 50=18.49% lat (msec) : 100=32.03%, 250=28.13%, 500=3.26%, 750=0.13% cpu : usr=0.03%, sys=2.89%, ctx=1636, 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=178541: Wed Aug 5 14:39:31 2026 read: IOPS=5, BW=87.3KiB/s (89.4kB/s)(5744KiB/65785msec) clat (usec): min=43, max=561745, avg=99908.81, stdev=71649.26 lat (usec): min=43, max=561746, avg=99913.03, stdev=71651.33 clat percentiles (usec): | 1.00th=[ 50], 5.00th=[ 77], 10.00th=[ 36963], 20.00th=[ 50594], | 30.00th=[ 65274], 40.00th=[ 73925], 50.00th=[ 83362], 60.00th=[ 98042], | 70.00th=[115868], 80.00th=[137364], 90.00th=[177210], 95.00th=[227541], | 99.00th=[408945], 99.50th=[471860], 99.90th=[557843], 99.95th=[557843], | 99.99th=[557843] bw ( KiB/s): min= 27, max= 254, per=26.66%, avg=96.51, stdev=46.43, samples=114 iops : min= 1, max= 15, avg= 5.28, stdev= 2.96, samples=114 write: IOPS=6, BW=99.5KiB/s (102kB/s)(6544KiB/65785msec); 0 zone resets clat (usec): min=1445, max=572197, avg=72070.73, stdev=81179.09 lat (usec): min=1447, max=572199, avg=72072.68, stdev=81179.17 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1811], 10.00th=[ 1942], 20.00th=[ 9241], | 30.00th=[ 18482], 40.00th=[ 32900], 50.00th=[ 47973], 60.00th=[ 61604], | 70.00th=[ 84411], 80.00th=[127402], 90.00th=[183501], 95.00th=[217056], | 99.00th=[362808], 99.50th=[442500], 99.90th=[574620], 99.95th=[574620], | 99.99th=[574620] bw ( KiB/s): min= 27, max= 348, per=27.81%, avg=105.68, stdev=62.29, samples=120 iops : min= 1, max= 21, avg= 5.85, stdev= 3.97, samples=120 lat (usec) : 50=0.52%, 100=1.95%, 750=0.39% lat (msec) : 2=5.73%, 4=1.82%, 10=4.17%, 20=5.47%, 50=16.15% lat (msec) : 100=32.55%, 250=27.34%, 500=3.65%, 750=0.26% cpu : usr=0.03%, sys=2.82%, ctx=1611, majf=0, minf=18 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=178542: Wed Aug 5 14:39:31 2026 read: IOPS=5, BW=94.6KiB/s (96.8kB/s)(6256KiB/66148msec) clat (usec): min=39, max=636563, avg=95639.01, stdev=75690.64 lat (usec): min=39, max=636564, avg=95640.21, stdev=75690.60 clat percentiles (usec): | 1.00th=[ 53], 5.00th=[ 857], 10.00th=[ 31327], 20.00th=[ 44827], | 30.00th=[ 54789], 40.00th=[ 66847], 50.00th=[ 80217], 60.00th=[ 93848], | 70.00th=[108528], 80.00th=[129500], 90.00th=[175113], 95.00th=[233833], | 99.00th=[417334], 99.50th=[517997], 99.90th=[633340], 99.95th=[633340], | 99.99th=[633340] bw ( KiB/s): min= 29, max= 317, per=27.65%, avg=100.09, stdev=54.85, samples=121 iops : min= 1, max= 19, avg= 5.49, stdev= 3.47, samples=121 write: IOPS=5, BW=91.2KiB/s (93.4kB/s)(6032KiB/66148msec); 0 zone resets clat (usec): min=1459, max=435271, avg=74545.03, stdev=79780.96 lat (usec): min=1460, max=435273, avg=74565.84, stdev=79804.36 clat percentiles (usec): | 1.00th=[ 1614], 5.00th=[ 1860], 10.00th=[ 6063], 20.00th=[ 12911], | 30.00th=[ 20317], 40.00th=[ 32375], 50.00th=[ 47449], 60.00th=[ 66323], | 70.00th=[ 83362], 80.00th=[122160], 90.00th=[198181], 95.00th=[250610], | 99.00th=[354419], 99.50th=[413139], 99.90th=[434111], 99.95th=[434111], | 99.99th=[434111] bw ( KiB/s): min= 29, max= 254, per=25.42%, avg=96.59, stdev=51.76, samples=120 iops : min= 1, max= 15, avg= 5.28, stdev= 3.33, samples=120 lat (usec) : 50=0.26%, 100=2.21%, 1000=0.13% lat (msec) : 2=3.12%, 4=1.43%, 10=2.86%, 20=7.94%, 50=19.40% lat (msec) : 100=31.38%, 250=26.56%, 500=4.43%, 750=0.26% cpu : usr=0.02%, sys=2.88%, ctx=1619, 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=178543: Wed Aug 5 14:39:31 2026 read: IOPS=5, BW=94.0KiB/s (97.3kB/s)(6032KiB/63501msec) clat (usec): min=44, max=554553, avg=91400.29, stdev=68403.37 lat (usec): min=45, max=554555, avg=91433.64, stdev=68446.90 clat percentiles (usec): | 1.00th=[ 51], 5.00th=[ 60], 10.00th=[ 79], 20.00th=[ 43779], | 30.00th=[ 59507], 40.00th=[ 70779], 50.00th=[ 84411], 60.00th=[ 93848], | 70.00th=[109577], 80.00th=[130548], 90.00th=[170918], 95.00th=[200279], | 99.00th=[425722], 99.50th=[442500], 99.90th=[557843], 99.95th=[557843], | 99.99th=[557843] bw ( KiB/s): min= 27, max= 220, per=28.00%, avg=101.37, stdev=47.74, samples=115 iops : min= 1, max= 13, avg= 5.59, stdev= 3.02, samples=115 write: IOPS=6, BW=98.5KiB/s (101kB/s)(6256KiB/63501msec); 0 zone resets clat (usec): min=1582, max=757420, avg=73682.16, stdev=84636.81 lat (usec): min=1584, max=757422, avg=73684.33, stdev=84636.65 clat percentiles (usec): | 1.00th=[ 1729], 5.00th=[ 2024], 10.00th=[ 7570], 20.00th=[ 12387], | 30.00th=[ 21103], 40.00th=[ 30540], 50.00th=[ 47973], 60.00th=[ 65799], | 70.00th=[ 88605], 80.00th=[125305], 90.00th=[166724], 95.00th=[214959], | 99.00th=[367002], 99.50th=[526386], 99.90th=[759170], 99.95th=[759170], | 99.99th=[759170] bw ( KiB/s): min= 24, max= 310, per=26.66%, avg=101.33, stdev=58.05, samples=120 iops : min= 1, max= 19, avg= 5.57, stdev= 3.69, samples=120 lat (usec) : 50=0.26%, 100=5.08%, 250=0.13% lat (msec) : 2=2.47%, 4=0.91%, 10=4.17%, 20=7.16%, 50=17.58% lat (msec) : 100=31.25%, 250=27.99%, 500=2.47%, 750=0.39%, 1000=0.13% cpu : usr=0.04%, sys=2.76%, ctx=1558, 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=362KiB/s (371kB/s), 87.3KiB/s-94.0KiB/s (89.4kB/s-97.3kB/s), io=23.4MiB (24.5MB), run=63501-66148msec WRITE: bw=381KiB/s (390kB/s), 91.2KiB/s-99.5KiB/s (93.4kB/s-102kB/s), io=24.6MiB (25.8MB), run=63501-66148msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178536: Wed Aug 5 14:39:48 2026 read: IOPS=4, BW=72.5KiB/s (74.3kB/s)(5920KiB/81616msec) clat (msec): min=8, max=575, avg=79.31, stdev=74.43 lat (msec): min=8, max=575, avg=79.31, stdev=74.43 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 16], 10.00th=[ 22], 20.00th=[ 29], | 30.00th=[ 35], 40.00th=[ 44], 50.00th=[ 55], 60.00th=[ 72], | 70.00th=[ 90], 80.00th=[ 116], 90.00th=[ 165], 95.00th=[ 209], | 99.00th=[ 409], 99.50th=[ 409], 99.90th=[ 575], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 29, max= 378, per=29.49%, avg=85.24, stdev=63.11, samples=135 iops : min= 1, max= 23, avg= 4.50, stdev= 4.00, samples=135 write: IOPS=4, BW=78.0KiB/s (79.9kB/s)(6368KiB/81616msec); 0 zone resets clat (msec): min=15, max=741, avg=130.82, stdev=113.88 lat (msec): min=15, max=741, avg=130.82, stdev=113.88 clat percentiles (msec): | 1.00th=[ 17], 5.00th=[ 27], 10.00th=[ 36], 20.00th=[ 48], | 30.00th=[ 62], 40.00th=[ 75], 50.00th=[ 91], 60.00th=[ 113], | 70.00th=[ 150], 80.00th=[ 201], 90.00th=[ 284], 95.00th=[ 342], | 99.00th=[ 592], 99.50th=[ 676], 99.90th=[ 743], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 29, max= 375, per=27.40%, avg=83.30, stdev=62.68, samples=148 iops : min= 1, max= 23, avg= 4.36, stdev= 3.97, samples=148 lat (msec) : 10=0.91%, 20=4.30%, 50=29.30%, 100=30.47%, 250=26.69% lat (msec) : 500=7.29%, 750=1.04% cpu : usr=0.02%, sys=1.01%, ctx=1122, 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=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=178537: Wed Aug 5 14:39:48 2026 read: IOPS=4, BW=70.1KiB/s (71.8kB/s)(5744KiB/81896msec) clat (msec): min=7, max=608, avg=79.83, stdev=79.95 lat (msec): min=7, max=608, avg=79.83, stdev=79.95 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 15], 10.00th=[ 21], 20.00th=[ 28], | 30.00th=[ 36], 40.00th=[ 44], 50.00th=[ 54], 60.00th=[ 66], | 70.00th=[ 80], 80.00th=[ 110], 90.00th=[ 174], 95.00th=[ 249], | 99.00th=[ 401], 99.50th=[ 447], 99.90th=[ 609], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 29, max= 378, per=30.30%, avg=87.55, stdev=65.14, samples=128 iops : min= 1, max= 23, avg= 4.65, stdev= 4.12, samples=128 write: IOPS=4, BW=79.9KiB/s (81.8kB/s)(6544KiB/81896msec); 0 zone resets clat (msec): min=17, max=947, avg=129.55, stdev=115.99 lat (msec): min=17, max=947, avg=129.55, stdev=115.99 clat percentiles (msec): | 1.00th=[ 21], 5.00th=[ 31], 10.00th=[ 37], 20.00th=[ 46], | 30.00th=[ 59], 40.00th=[ 72], 50.00th=[ 92], 60.00th=[ 116], | 70.00th=[ 153], 80.00th=[ 199], 90.00th=[ 268], 95.00th=[ 326], | 99.00th=[ 531], 99.50th=[ 760], 99.90th=[ 944], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 29, max= 380, per=28.31%, avg=86.06, stdev=61.78, samples=148 iops : min= 1, max= 23, avg= 4.53, stdev= 3.91, samples=148 lat (msec) : 10=0.78%, 20=4.56%, 50=28.78%, 100=30.21%, 250=27.08% lat (msec) : 500=7.55%, 750=0.65%, 1000=0.39% cpu : usr=0.03%, sys=1.02%, ctx=1130, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=359,409,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178538: Wed Aug 5 14:39:48 2026 read: IOPS=4, BW=76.1KiB/s (77.9kB/s)(6256KiB/82232msec) clat (msec): min=10, max=496, avg=85.58, stdev=83.94 lat (msec): min=10, max=496, avg=85.58, stdev=83.94 clat percentiles (msec): | 1.00th=[ 11], 5.00th=[ 17], 10.00th=[ 20], 20.00th=[ 27], | 30.00th=[ 36], 40.00th=[ 45], 50.00th=[ 54], 60.00th=[ 68], | 70.00th=[ 90], 80.00th=[ 132], 90.00th=[ 199], 95.00th=[ 268], | 99.00th=[ 418], 99.50th=[ 443], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 29, max= 380, per=30.33%, avg=87.65, stdev=70.31, samples=139 iops : min= 1, max= 23, avg= 4.65, stdev= 4.43, samples=139 write: IOPS=4, BW=73.4KiB/s (75.1kB/s)(6032KiB/82232msec); 0 zone resets clat (msec): min=14, max=713, avg=128.53, stdev=116.89 lat (msec): min=14, max=713, avg=128.54, stdev=116.90 clat percentiles (msec): | 1.00th=[ 18], 5.00th=[ 26], 10.00th=[ 31], 20.00th=[ 45], | 30.00th=[ 55], 40.00th=[ 68], 50.00th=[ 89], 60.00th=[ 114], | 70.00th=[ 146], 80.00th=[ 190], 90.00th=[ 284], 95.00th=[ 376], | 99.00th=[ 558], 99.50th=[ 709], 99.90th=[ 718], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 22, max= 438, per=26.56%, avg=80.74, stdev=62.11, samples=143 iops : min= 1, max= 27, avg= 4.20, stdev= 3.95, samples=143 lat (msec) : 20=6.25%, 50=30.47%, 100=28.13%, 250=25.52%, 500=8.85% lat (msec) : 750=0.78% cpu : usr=0.02%, sys=1.00%, ctx=1101, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=391,377,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178539: Wed Aug 5 14:39:48 2026 read: IOPS=4, BW=72.0KiB/s (74.7kB/s)(6032KiB/82653msec) clat (msec): min=6, max=428, avg=87.01, stdev=80.27 lat (msec): min=6, max=428, avg=87.01, stdev=80.27 clat percentiles (msec): | 1.00th=[ 10], 5.00th=[ 19], 10.00th=[ 23], 20.00th=[ 30], | 30.00th=[ 39], 40.00th=[ 51], 50.00th=[ 59], 60.00th=[ 71], | 70.00th=[ 93], 80.00th=[ 126], 90.00th=[ 192], 95.00th=[ 284], | 99.00th=[ 376], 99.50th=[ 393], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 29, max= 287, per=29.27%, avg=84.60, stdev=60.72, samples=137 iops : min= 1, max= 17, avg= 4.44, stdev= 3.84, samples=137 write: IOPS=4, BW=75.7KiB/s (77.5kB/s)(6256KiB/82653msec); 0 zone resets clat (msec): min=16, max=701, avg=127.26, stdev=111.07 lat (msec): min=16, max=701, avg=127.26, stdev=111.07 clat percentiles (msec): | 1.00th=[ 19], 5.00th=[ 26], 10.00th=[ 32], 20.00th=[ 43], | 30.00th=[ 56], 40.00th=[ 68], 50.00th=[ 89], 60.00th=[ 117], | 70.00th=[ 153], 80.00th=[ 192], 90.00th=[ 264], 95.00th=[ 342], | 99.00th=[ 558], 99.50th=[ 701], 99.90th=[ 701], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 29, max= 380, per=27.18%, avg=82.64, stdev=65.43, samples=146 iops : min= 1, max= 23, avg= 4.34, stdev= 4.14, samples=146 lat (msec) : 10=0.52%, 20=3.12%, 50=29.30%, 100=30.34%, 250=27.73% lat (msec) : 500=8.46%, 750=0.52% cpu : usr=0.02%, sys=0.95%, ctx=1118, majf=0, minf=12 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=377,391,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=290KiB/s (297kB/s), 70.1KiB/s-76.1KiB/s (71.8kB/s-77.9kB/s), io=23.4MiB (24.5MB), run=81616-82653msec WRITE: bw=305KiB/s (312kB/s), 73.4KiB/s-79.9KiB/s (75.1kB/s-81.8kB/s), io=24.6MiB (25.8MB), run=81616-82653msec 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=178563: Wed Aug 5 14:40:11 2026 read: IOPS=1, BW=1314KiB/s (1345kB/s)(7168KiB/5456msec) clat (usec): min=477, max=496133, avg=310309.83, stdev=162798.23 lat (usec): min=478, max=496134, avg=310311.06, stdev=162798.30 clat percentiles (usec): | 1.00th=[ 478], 5.00th=[ 478], 10.00th=[ 478], 20.00th=[240124], | 30.00th=[270533], 40.00th=[270533], 50.00th=[337642], 60.00th=[392168], | 70.00th=[392168], 80.00th=[434111], 90.00th=[497026], 95.00th=[497026], | 99.00th=[497026], 99.50th=[497026], 99.90th=[497026], 99.95th=[497026], | 99.99th=[497026] bw ( KiB/s): min= 1654, max= 2031, per=67.45%, avg=1940.67, stdev=141.75, samples=6 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=6 write: IOPS=0, BW=938KiB/s (961kB/s)(5120KiB/5456msec); 0 zone resets clat (msec): min=385, max=1080, avg=616.54, stdev=295.01 lat (msec): min=385, max=1080, avg=617.41, stdev=294.51 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 384], 10.00th=[ 384], 20.00th=[ 384], | 30.00th=[ 409], 40.00th=[ 409], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 735], 80.00th=[ 735], 90.00th=[ 1083], 95.00th=[ 1083], | 99.00th=[ 1083], 99.50th=[ 1083], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 1802, max= 4079, per=65.05%, avg=2620.33, stdev=1266.37, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 lat (usec) : 500=8.33% lat (msec) : 250=8.33%, 500=66.67%, 750=8.33%, 2000=8.33% cpu : usr=0.02%, sys=6.23%, ctx=165, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=7,5,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178564: Wed Aug 5 14:40:11 2026 read: IOPS=0, BW=288KiB/s (295kB/s)(2048KiB/7117msec) clat (msec): min=6, max=353, avg=180.14, stdev=245.54 lat (msec): min=6, max=353, avg=180.14, stdev=245.54 clat percentiles (msec): | 1.00th=[ 7], 5.00th=[ 7], 10.00th=[ 7], 20.00th=[ 7], | 30.00th=[ 7], 40.00th=[ 7], 50.00th=[ 7], 60.00th=[ 355], | 70.00th=[ 355], 80.00th=[ 355], 90.00th=[ 355], 95.00th=[ 355], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 1777, max= 2007, per=65.76%, avg=1892.00, stdev=162.63, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1439KiB/s (1473kB/s)(10.0MiB/7117msec); 0 zone resets clat (msec): min=212, max=2215, avg=656.65, stdev=632.22 lat (msec): min=212, max=2215, avg=656.73, stdev=632.20 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 213], 10.00th=[ 213], 20.00th=[ 266], | 30.00th=[ 300], 40.00th=[ 300], 50.00th=[ 313], 60.00th=[ 363], | 70.00th=[ 477], 80.00th=[ 1045], 90.00th=[ 1083], 95.00th=[ 2232], | 99.00th=[ 2232], 99.50th=[ 2232], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 1980, max= 4063, per=64.23%, avg=2587.29, stdev=992.05, samples=7 iops : min= 1, max= 3, avg= 1.57, stdev= 0.98, samples=7 lat (msec) : 10=8.33%, 250=8.33%, 500=58.33%, 2000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=6.70%, ctx=116, 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=178565: Wed Aug 5 14:40:11 2026 read: IOPS=1, BW=1076KiB/s (1102kB/s)(6144KiB/5708msec) clat (usec): min=442, max=368248, avg=169597.53, stdev=184922.65 lat (usec): min=443, max=368249, avg=169598.57, stdev=184922.53 clat percentiles (usec): | 1.00th=[ 445], 5.00th=[ 445], 10.00th=[ 445], 20.00th=[ 469], | 30.00th=[ 469], 40.00th=[ 3621], 50.00th=[ 3621], 60.00th=[316670], | 70.00th=[329253], 80.00th=[329253], 90.00th=[367002], 95.00th=[367002], | 99.00th=[367002], 99.50th=[367002], 99.90th=[367002], 99.95th=[367002], | 99.99th=[367002] bw ( KiB/s): min= 1899, max= 4015, per=100.00%, avg=3173.00, stdev=1122.20, samples=3 iops : min= 1, max= 3, avg= 2.33, stdev= 1.15, samples=3 write: IOPS=1, BW=1076KiB/s (1102kB/s)(6144KiB/5708msec); 0 zone resets clat (msec): min=258, max=2181, avg=719.33, stdev=734.02 lat (msec): min=258, max=2181, avg=719.39, stdev=734.05 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 259], 10.00th=[ 259], 20.00th=[ 259], | 30.00th=[ 259], 40.00th=[ 439], 50.00th=[ 439], 60.00th=[ 489], | 70.00th=[ 693], 80.00th=[ 693], 90.00th=[ 2198], 95.00th=[ 2198], | 99.00th=[ 2198], 99.50th=[ 2198], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 1802, max= 3984, per=60.35%, avg=2431.00, stdev=1039.89, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (usec) : 500=16.67% lat (msec) : 4=8.33%, 500=58.33%, 750=8.33%, >=2000=8.33% cpu : usr=0.00%, sys=5.50%, ctx=114, majf=0, minf=13 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=6,6,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-rw: (groupid=0, jobs=1): err= 0: pid=178567: Wed Aug 5 14:40:11 2026 read: IOPS=0, BW=1018KiB/s (1043kB/s)(5120KiB/5028msec) clat (usec): min=1361, max=387666, avg=208246.83, stdev=191401.16 lat (usec): min=1362, max=387679, avg=208250.33, stdev=191403.94 clat percentiles (usec): | 1.00th=[ 1369], 5.00th=[ 1369], 10.00th=[ 1369], 20.00th=[ 1369], | 30.00th=[ 4686], 40.00th=[ 4686], 50.00th=[283116], 60.00th=[283116], | 70.00th=[367002], 80.00th=[367002], 90.00th=[387974], 95.00th=[387974], | 99.00th=[387974], 99.50th=[387974], 99.90th=[387974], 99.95th=[387974], | 99.99th=[387974] bw ( KiB/s): min= 3586, max= 3605, per=100.00%, avg=3595.50, stdev=13.44, samples=2 iops : min= 3, max= 3, avg= 3.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1426KiB/s (1460kB/s)(7168KiB/5028msec); 0 zone resets clat (msec): min=297, max=997, avg=558.29, stdev=219.92 lat (msec): min=297, max=997, avg=559.79, stdev=219.83 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 296], 10.00th=[ 296], 20.00th=[ 439], | 30.00th=[ 460], 40.00th=[ 460], 50.00th=[ 535], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 625], 90.00th=[ 995], 95.00th=[ 995], | 99.00th=[ 995], 99.50th=[ 995], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 1992, max= 3961, per=59.73%, avg=2406.00, stdev=869.47, samples=5 iops : min= 1, max= 3, avg= 1.40, stdev= 0.89, samples=5 lat (msec) : 2=8.33%, 10=8.33%, 500=50.00%, 750=25.00%, 1000=8.33% cpu : usr=0.00%, sys=9.09%, ctx=112, majf=0, minf=14 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=5,7,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2878KiB/s (2947kB/s), 288KiB/s-1314KiB/s (295kB/s-1345kB/s), io=20.0MiB (20.0MB), run=5028-7117msec WRITE: bw=4029KiB/s (4125kB/s), 938KiB/s-1439KiB/s (961kB/s-1473kB/s), io=28.0MiB (29.4MB), run=5028-7117msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178568: Wed Aug 5 14:40:12 2026 read: IOPS=1, BW=1213KiB/s (1242kB/s)(7168KiB/5908msec) clat (msec): min=120, max=1393, avg=377.15, stdev=466.83 lat (msec): min=120, max=1393, avg=377.15, stdev=466.83 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 121], 10.00th=[ 121], 20.00th=[ 138], | 30.00th=[ 144], 40.00th=[ 144], 50.00th=[ 153], 60.00th=[ 199], | 70.00th=[ 199], 80.00th=[ 493], 90.00th=[ 1401], 95.00th=[ 1401], | 99.00th=[ 1401], 99.50th=[ 1401], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 1835, max= 4031, per=100.00%, avg=2921.00, stdev=1154.12, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 write: IOPS=0, BW=867KiB/s (887kB/s)(5120KiB/5908msec); 0 zone resets clat (msec): min=452, max=933, avg=637.36, stdev=201.71 lat (msec): min=452, max=933, avg=637.44, stdev=201.72 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 451], 10.00th=[ 451], 20.00th=[ 451], | 30.00th=[ 477], 40.00th=[ 477], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 743], 80.00th=[ 743], 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= 1815, max= 2031, per=49.00%, avg=1926.20, stdev=98.77, samples=5 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=5 lat (msec) : 250=41.67%, 500=25.00%, 750=16.67%, 1000=8.33%, 2000=8.33% cpu : usr=0.00%, sys=2.57%, ctx=87, 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=178569: Wed Aug 5 14:40:12 2026 read: IOPS=0, BW=281KiB/s (288kB/s)(2048KiB/7293msec) clat (msec): min=199, max=378, avg=289.07, stdev=127.01 lat (msec): min=199, max=378, avg=289.07, stdev=127.01 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 201], 10.00th=[ 201], 20.00th=[ 201], | 30.00th=[ 201], 40.00th=[ 201], 50.00th=[ 201], 60.00th=[ 380], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 380], 95.00th=[ 380], | 99.00th=[ 380], 99.50th=[ 380], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 1446, max= 1965, per=60.74%, avg=1705.50, stdev=366.99, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 write: IOPS=1, BW=1404KiB/s (1438kB/s)(10.0MiB/7293msec); 0 zone resets clat (msec): min=193, max=2018, avg=661.77, stdev=567.32 lat (msec): min=193, max=2018, avg=661.93, stdev=567.29 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 194], 10.00th=[ 194], 20.00th=[ 253], | 30.00th=[ 309], 40.00th=[ 334], 50.00th=[ 409], 60.00th=[ 510], | 70.00th=[ 592], 80.00th=[ 760], 90.00th=[ 1234], 95.00th=[ 2022], | 99.00th=[ 2022], 99.50th=[ 2022], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 1777, max= 4039, per=55.67%, avg=2188.38, stdev=755.91, samples=8 iops : min= 1, max= 3, avg= 1.38, stdev= 0.74, samples=8 lat (msec) : 250=16.67%, 500=41.67%, 750=16.67%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=3.46%, ctx=114, 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=178570: Wed Aug 5 14:40:12 2026 read: IOPS=0, BW=916KiB/s (938kB/s)(6144KiB/6708msec) clat (msec): min=134, max=462, avg=224.76, stdev=123.58 lat (msec): min=134, max=462, avg=224.76, stdev=123.58 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 136], 10.00th=[ 136], 20.00th=[ 140], | 30.00th=[ 140], 40.00th=[ 161], 50.00th=[ 161], 60.00th=[ 209], | 70.00th=[ 241], 80.00th=[ 241], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 2011, max= 4047, per=90.17%, avg=2532.00, stdev=1010.07, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 write: IOPS=0, BW=916KiB/s (938kB/s)(6144KiB/6708msec); 0 zone resets clat (msec): min=256, max=2540, avg=861.82, stdev=878.59 lat (msec): min=256, max=2540, avg=861.90, stdev=878.57 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 257], 10.00th=[ 257], 20.00th=[ 284], | 30.00th=[ 284], 40.00th=[ 296], 50.00th=[ 296], 60.00th=[ 810], | 70.00th=[ 986], 80.00th=[ 986], 90.00th=[ 2534], 95.00th=[ 2534], | 99.00th=[ 2534], 99.50th=[ 2534], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min= 1835, max= 3357, per=58.67%, avg=2306.50, stdev=705.59, samples=4 iops : min= 1, max= 3, avg= 1.50, stdev= 1.00, samples=4 lat (msec) : 250=41.67%, 500=33.33%, 1000=16.67%, >=2000=8.33% cpu : usr=0.00%, sys=1.82%, ctx=61, 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=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=178571: Wed Aug 5 14:40:12 2026 read: IOPS=0, BW=703KiB/s (720kB/s)(5120KiB/7279msec) clat (msec): min=113, max=1156, avg=444.94, stdev=452.75 lat (msec): min=113, max=1156, avg=444.94, stdev=452.75 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 114], 10.00th=[ 114], 20.00th=[ 114], | 30.00th=[ 142], 40.00th=[ 142], 50.00th=[ 174], 60.00th=[ 174], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 1150], 95.00th=[ 1150], | 99.00th=[ 1150], 99.50th=[ 1150], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 1965, max= 4031, per=95.00%, avg=2667.67, stdev=1180.87, samples=3 iops : min= 1, max= 3, avg= 1.67, stdev= 1.15, samples=3 write: IOPS=0, BW=985KiB/s (1008kB/s)(7168KiB/7279msec); 0 zone resets clat (msec): min=144, max=2439, avg=674.43, stdev=813.73 lat (msec): min=144, max=2439, avg=674.70, stdev=813.71 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 144], 10.00th=[ 144], 20.00th=[ 209], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 279], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 827], 90.00th=[ 2433], 95.00th=[ 2433], | 99.00th=[ 2433], 99.50th=[ 2433], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 1878, max= 4079, per=76.34%, avg=3000.75, stdev=1223.21, samples=4 iops : min= 1, max= 3, avg= 2.00, stdev= 1.15, samples=4 lat (msec) : 250=41.67%, 500=16.67%, 750=16.67%, 1000=8.33%, 2000=8.33% lat (msec) : >=2000=8.33% cpu : usr=0.00%, sys=2.53%, ctx=85, 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=2808KiB/s (2876kB/s), 281KiB/s-1213KiB/s (288kB/s-1242kB/s), io=20.0MiB (20.0MB), run=5908-7293msec WRITE: bw=3931KiB/s (4026kB/s), 867KiB/s-1404KiB/s (887kB/s-1438kB/s), io=28.0MiB (29.4MB), run=5908-7293msec 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=178578: Wed Aug 5 14:40:36 2026 read: IOPS=0, BW=1863KiB/s (1907kB/s)(12.0MiB/6597msec) clat (msec): min=1164, max=4089, avg=2162.04, stdev=1669.67 lat (msec): min=1164, max=4089, avg=2162.04, stdev=1669.67 clat percentiles (msec): | 1.00th=[ 1167], 5.00th=[ 1167], 10.00th=[ 1167], 20.00th=[ 1167], | 30.00th=[ 1167], 40.00th=[ 1234], 50.00th=[ 1234], 60.00th=[ 1234], | 70.00th=[ 4077], 80.00th=[ 4077], 90.00th=[ 4077], 95.00th=[ 4077], | 99.00th=[ 4077], 99.50th=[ 4077], 99.90th=[ 4077], 99.95th=[ 4077], | 99.99th=[ 4077] bw ( KiB/s): min= 7907, max= 8159, per=100.00%, avg=8033.00, stdev=178.19, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=5.85%, ctx=524, 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=178579: Wed Aug 5 14:40:36 2026 read: IOPS=0, BW=547KiB/s (560kB/s)(4096KiB/7491msec) clat (nsec): min=4015.0M, max=4015.0M, avg=4015953893.00, stdev= 0.00 lat (nsec): min=4015.0M, max=4015.0M, avg=4015956521.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 4010], 5.00th=[ 4010], 10.00th=[ 4010], 20.00th=[ 4010], | 30.00th=[ 4010], 40.00th=[ 4010], 50.00th=[ 4010], 60.00th=[ 4010], | 70.00th=[ 4010], 80.00th=[ 4010], 90.00th=[ 4010], 95.00th=[ 4010], | 99.00th=[ 4010], 99.50th=[ 4010], 99.90th=[ 4010], 99.95th=[ 4010], | 99.99th=[ 4010] bw ( KiB/s): min= 8159, max= 8159, per=100.00%, avg=8159.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1094KiB/s (1120kB/s)(8192KiB/7491msec); 0 zone resets clat (msec): min=1430, max=1878, avg=1654.11, stdev=316.78 lat (msec): min=1430, max=1878, avg=1654.56, stdev=316.91 clat percentiles (msec): | 1.00th=[ 1435], 5.00th=[ 1435], 10.00th=[ 1435], 20.00th=[ 1435], | 30.00th=[ 1435], 40.00th=[ 1435], 50.00th=[ 1435], 60.00th=[ 1871], | 70.00th=[ 1871], 80.00th=[ 1871], 90.00th=[ 1871], 95.00th=[ 1871], | 99.00th=[ 1871], 99.50th=[ 1871], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 8143, max= 8143, per=100.00%, avg=8143.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.05%, sys=2.88%, ctx=475, 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=178580: Wed Aug 5 14:40:36 2026 write: IOPS=0, BW=1752KiB/s (1794kB/s)(12.0MiB/7014msec); 0 zone resets clat (msec): min=623, max=4309, avg=2277.48, stdev=1871.88 lat (msec): min=626, max=4310, avg=2279.44, stdev=1870.68 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 1905], 50.00th=[ 1905], 60.00th=[ 1905], | 70.00th=[ 4329], 80.00th=[ 4329], 90.00th=[ 4329], 95.00th=[ 4329], | 99.00th=[ 4329], 99.50th=[ 4329], 99.90th=[ 4329], 99.95th=[ 4329], | 99.99th=[ 4329] bw ( KiB/s): min= 8110, max= 8159, per=100.00%, avg=8134.50, stdev=34.65, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=2.28%, ctx=66, 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=178582: Wed Aug 5 14:40:36 2026 write: IOPS=0, BW=1675KiB/s (1715kB/s)(12.0MiB/7335msec); 0 zone resets clat (msec): min=777, max=3687, avg=2364.23, stdev=1472.62 lat (msec): min=777, max=3689, avg=2365.20, stdev=1473.67 clat percentiles (msec): | 1.00th=[ 776], 5.00th=[ 776], 10.00th=[ 776], 20.00th=[ 776], | 30.00th=[ 776], 40.00th=[ 2635], 50.00th=[ 2635], 60.00th=[ 2635], | 70.00th=[ 3675], 80.00th=[ 3675], 90.00th=[ 3675], 95.00th=[ 3675], | 99.00th=[ 3675], 99.50th=[ 3675], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 8031, max= 8175, per=100.00%, avg=8103.00, stdev=101.82, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 1000=33.33%, >=2000=66.67% cpu : usr=0.00%, sys=1.35%, ctx=51, majf=0, minf=7 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,3,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): READ: bw=2187KiB/s (2240kB/s), 547KiB/s-1863KiB/s (560kB/s-1907kB/s), io=16.0MiB (16.8MB), run=6597-7491msec WRITE: bw=4374KiB/s (4479kB/s), 1094KiB/s-1752KiB/s (1120kB/s-1794kB/s), io=32.0MiB (33.6MB), run=7014-7491msec rand-rw: (groupid=0, jobs=1): err= 0: pid=178583: Wed Aug 5 14:40:37 2026 read: IOPS=0, BW=1584KiB/s (1622kB/s)(12.0MiB/7756msec) clat (msec): min=189, max=5648, avg=2518.65, stdev=2816.22 lat (msec): min=189, max=5648, avg=2518.65, stdev=2816.22 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 190], 10.00th=[ 190], 20.00th=[ 190], | 30.00th=[ 190], 40.00th=[ 1720], 50.00th=[ 1720], 60.00th=[ 1720], | 70.00th=[ 5671], 80.00th=[ 5671], 90.00th=[ 5671], 95.00th=[ 5671], | 99.00th=[ 5671], 99.50th=[ 5671], 99.90th=[ 5671], 99.95th=[ 5671], | 99.99th=[ 5671] bw ( KiB/s): min= 7787, max= 7787, per=100.00%, avg=7787.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 250=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.12%, ctx=62, 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=178584: Wed Aug 5 14:40:37 2026 read: IOPS=0, BW=524KiB/s (536kB/s)(4096KiB/7821msec) clat (nsec): min=6289.7M, max=6289.7M, avg=6289658032.00, stdev= 0.00 lat (nsec): min=6289.7M, max=6289.7M, avg=6289659648.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 6275], 5.00th=[ 6275], 10.00th=[ 6275], 20.00th=[ 6275], | 30.00th=[ 6275], 40.00th=[ 6275], 50.00th=[ 6275], 60.00th=[ 6275], | 70.00th=[ 6275], 80.00th=[ 6275], 90.00th=[ 6275], 95.00th=[ 6275], | 99.00th=[ 6275], 99.50th=[ 6275], 99.90th=[ 6275], 99.95th=[ 6275], | 99.99th=[ 6275] bw ( KiB/s): min= 7501, max= 7501, per=100.00%, avg=7501.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 write: IOPS=0, BW=1047KiB/s (1073kB/s)(8192KiB/7821msec); 0 zone resets clat (msec): min=426, max=756, avg=591.40, stdev=233.20 lat (msec): min=426, max=756, avg=591.77, stdev=233.21 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 760], | 70.00th=[ 760], 80.00th=[ 760], 90.00th=[ 760], 95.00th=[ 760], | 99.00th=[ 760], 99.50th=[ 760], 99.90th=[ 760], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 8062, max= 8062, per=100.00%, avg=8062.00, stdev= 0.00, samples=1 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=1 lat (msec) : 500=33.33%, 1000=33.33%, >=2000=33.33% cpu : usr=0.01%, sys=1.41%, ctx=65, 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=178585: Wed Aug 5 14:40:37 2026 write: IOPS=0, BW=1728KiB/s (1769kB/s)(12.0MiB/7112msec); 0 zone resets clat (msec): min=502, max=5208, avg=2333.68, stdev=2520.46 lat (msec): min=502, max=5208, avg=2334.24, stdev=2520.44 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 502], 10.00th=[ 502], 20.00th=[ 502], | 30.00th=[ 502], 40.00th=[ 1284], 50.00th=[ 1284], 60.00th=[ 1284], | 70.00th=[ 5201], 80.00th=[ 5201], 90.00th=[ 5201], 95.00th=[ 5201], | 99.00th=[ 5201], 99.50th=[ 5201], 99.90th=[ 5201], 99.95th=[ 5201], | 99.99th=[ 5201] bw ( KiB/s): min= 7953, max= 8047, per=100.00%, avg=8000.00, stdev=66.47, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 750=33.33%, 2000=33.33%, >=2000=33.33% cpu : usr=0.00%, sys=1.72%, ctx=48, 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=178586: Wed Aug 5 14:40:37 2026 write: IOPS=0, BW=1659KiB/s (1699kB/s)(12.0MiB/7408msec); 0 zone resets clat (msec): min=1135, max=4403, avg=2351.65, stdev=1787.03 lat (msec): min=1135, max=4403, avg=2351.96, stdev=1787.12 clat percentiles (msec): | 1.00th=[ 1133], 5.00th=[ 1133], 10.00th=[ 1133], 20.00th=[ 1133], | 30.00th=[ 1133], 40.00th=[ 1519], 50.00th=[ 1519], 60.00th=[ 1519], | 70.00th=[ 4396], 80.00th=[ 4396], 90.00th=[ 4396], 95.00th=[ 4396], | 99.00th=[ 4396], 99.50th=[ 4396], 99.90th=[ 4396], 99.95th=[ 4396], | 99.99th=[ 4396] bw ( KiB/s): min= 7772, max= 7907, per=100.00%, avg=7839.50, stdev=95.46, samples=2 iops : min= 1, max= 1, avg= 1.00, stdev= 0.00, samples=2 lat (msec) : 2000=66.67%, >=2000=33.33% cpu : usr=0.00%, sys=1.26%, ctx=55, 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=2095KiB/s (2145kB/s), 524KiB/s-1584KiB/s (536kB/s-1622kB/s), io=16.0MiB (16.8MB), run=7756-7821msec WRITE: bw=4190KiB/s (4290kB/s), 1047KiB/s-1728KiB/s (1073kB/s-1769kB/s), io=32.0MiB (33.6MB), run=7112-7821msec