== sanity test 398c: run fio to test AIO ================= 16:50:23 (1786567823) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.559502 s, 75.0 MB/s osc.lustre-OST0000-osc-ffff8c7d2ab79800.rpc_stats=clear writing 40M to OST0 by fio with 4 jobs... rand-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16 ... fio-3.19 Starting 4 processes rand-write: (groupid=0, jobs=1): err= 0: pid=146128: Wed Aug 12 16:52:58 2026 write: IOPS=17, BW=71.1KiB/s (72.9kB/s)(10.0MiB/143925msec); 0 zone resets slat (usec): min=35, max=15637, avg=252.21, stdev=806.62 clat (msec): min=115, max=1775, avg=898.79, stdev=210.91 lat (msec): min=115, max=1775, avg=899.04, stdev=210.94 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 625], 10.00th=[ 676], 20.00th=[ 726], | 30.00th=[ 785], 40.00th=[ 827], 50.00th=[ 877], 60.00th=[ 927], | 70.00th=[ 978], 80.00th=[ 1062], 90.00th=[ 1200], 95.00th=[ 1284], | 99.00th=[ 1418], 99.50th=[ 1452], 99.90th=[ 1670], 99.95th=[ 1720], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 128, per=25.46%, avg=72.06, stdev=29.23, samples=280 iops : min= 1, max= 32, avg=17.60, stdev= 7.37, samples=280 lat (msec) : 250=0.62%, 500=1.95%, 750=21.21%, 1000=48.71%, 2000=27.50% cpu : usr=0.05%, sys=0.29%, ctx=1983, majf=0, minf=9 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-write: (groupid=0, jobs=1): err= 0: pid=146129: Wed Aug 12 16:52:58 2026 write: IOPS=17, BW=71.0KiB/s (72.7kB/s)(10.0MiB/144220msec); 0 zone resets slat (usec): min=36, max=12794, avg=251.24, stdev=767.53 clat (msec): min=176, max=1573, avg=900.24, stdev=208.25 lat (msec): min=176, max=1573, avg=900.49, stdev=208.27 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 592], 10.00th=[ 676], 20.00th=[ 743], | 30.00th=[ 793], 40.00th=[ 827], 50.00th=[ 869], 60.00th=[ 927], | 70.00th=[ 986], 80.00th=[ 1062], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1452], 99.50th=[ 1469], 99.90th=[ 1552], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 7, max= 142, per=25.38%, avg=71.82, stdev=32.01, samples=281 iops : min= 1, max= 35, avg=17.53, stdev= 8.03, samples=281 lat (msec) : 250=0.62%, 500=0.94%, 750=19.92%, 1000=50.94%, 2000=27.58% cpu : usr=0.04%, sys=0.29%, ctx=1851, majf=0, minf=10 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-write: (groupid=0, jobs=1): err= 0: pid=146130: Wed Aug 12 16:52:58 2026 write: IOPS=17, BW=71.1KiB/s (72.9kB/s)(10.0MiB/143926msec); 0 zone resets slat (usec): min=36, max=28461, avg=288.48, stdev=1101.35 clat (msec): min=101, max=1552, avg=898.32, stdev=211.29 lat (msec): min=101, max=1552, avg=898.61, stdev=211.32 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 600], 10.00th=[ 676], 20.00th=[ 726], | 30.00th=[ 785], 40.00th=[ 827], 50.00th=[ 869], 60.00th=[ 927], | 70.00th=[ 986], 80.00th=[ 1070], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1435], 99.50th=[ 1469], 99.90th=[ 1502], 99.95th=[ 1536], | 99.99th=[ 1552] bw ( KiB/s): min= 7, max= 128, per=25.38%, avg=71.81, stdev=30.66, samples=281 iops : min= 1, max= 32, avg=17.53, stdev= 7.67, samples=281 lat (msec) : 250=0.62%, 500=0.94%, 750=21.60%, 1000=49.10%, 2000=27.73% cpu : usr=0.04%, sys=0.30%, ctx=2159, majf=0, minf=9 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 rand-write: (groupid=0, jobs=1): err= 0: pid=146131: Wed Aug 12 16:52:58 2026 write: IOPS=17, BW=70.0KiB/s (72.7kB/s)(10.0MiB/144227msec); 0 zone resets slat (usec): min=36, max=19764, avg=260.24, stdev=944.26 clat (msec): min=87, max=1530, avg=900.29, stdev=201.34 lat (msec): min=88, max=1531, avg=900.56, stdev=201.36 clat percentiles (msec): | 1.00th=[ 456], 5.00th=[ 609], 10.00th=[ 676], 20.00th=[ 743], | 30.00th=[ 793], 40.00th=[ 827], 50.00th=[ 869], 60.00th=[ 936], | 70.00th=[ 995], 80.00th=[ 1062], 90.00th=[ 1167], 95.00th=[ 1267], | 99.00th=[ 1401], 99.50th=[ 1469], 99.90th=[ 1502], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7, max= 135, per=24.93%, avg=70.55, stdev=30.23, samples=286 iops : min= 1, max= 33, avg=17.21, stdev= 7.58, samples=286 lat (msec) : 100=0.04%, 500=1.68%, 750=19.80%, 1000=50.04%, 2000=28.44% cpu : usr=0.05%, sys=0.28%, ctx=1928, majf=0, minf=11 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,2560,0,0 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): WRITE: bw=284KiB/s (291kB/s), 70.0KiB/s-71.1KiB/s (72.7kB/s-72.9kB/s), io=40.0MiB (41.9MB), run=143925-144227msec mix rw 40M to OST0 by fio with 4 jobs... rand-rw: (g=0): rw=randrw, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=libaio, iodepth=16 ... fio-3.19 Starting 4 processes rand-rw: (groupid=0, jobs=1): err= 0: pid=146161: Wed Aug 12 16:54:50 2026 read: IOPS=12, BW=48.2KiB/s (49.4kB/s)(5048KiB/104726msec) slat (usec): min=3180, max=76419, avg=14921.91, stdev=8889.73 clat (msec): min=16, max=984, avg=411.54, stdev=116.34 lat (msec): min=35, max=1011, avg=426.46, stdev=117.99 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 257], 10.00th=[ 288], 20.00th=[ 321], | 30.00th=[ 347], 40.00th=[ 372], 50.00th=[ 393], 60.00th=[ 422], | 70.00th=[ 456], 80.00th=[ 493], 90.00th=[ 567], 95.00th=[ 634], | 99.00th=[ 751], 99.50th=[ 835], 99.90th=[ 877], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 143, per=25.22%, avg=48.17, stdev=22.76, samples=205 iops : min= 1, max= 35, avg=11.55, stdev= 5.70, samples=205 write: IOPS=12, BW=49.6KiB/s (50.8kB/s)(5192KiB/104726msec); 0 zone resets slat (usec): min=55, max=23670, avg=344.45, stdev=1146.57 clat (msec): min=238, max=2472, avg=873.06, stdev=278.58 lat (msec): min=239, max=2472, avg=873.40, stdev=278.58 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 493], 10.00th=[ 567], 20.00th=[ 659], | 30.00th=[ 726], 40.00th=[ 785], 50.00th=[ 844], 60.00th=[ 911], | 70.00th=[ 978], 80.00th=[ 1045], 90.00th=[ 1183], 95.00th=[ 1351], | 99.00th=[ 1905], 99.50th=[ 2400], 99.90th=[ 2433], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 7, max= 103, per=24.86%, avg=49.47, stdev=20.05, samples=206 iops : min= 1, max= 25, avg=11.86, stdev= 5.03, samples=206 lat (msec) : 20=0.04%, 50=0.12%, 100=0.20%, 250=1.64%, 500=40.66% lat (msec) : 750=23.48%, 1000=20.47%, 2000=12.97%, >=2000=0.43% cpu : usr=0.09%, sys=0.76%, ctx=4784, majf=0, minf=13 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1262,1298,0,0 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=146162: Wed Aug 12 16:54:50 2026 read: IOPS=11, BW=47.6KiB/s (48.8kB/s)(4976KiB/104482msec) slat (usec): min=61, max=61018, avg=14489.31, stdev=8510.84 clat (msec): min=16, max=985, avg=413.18, stdev=118.85 lat (msec): min=25, max=1006, avg=427.68, stdev=120.64 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 271], 10.00th=[ 296], 20.00th=[ 317], | 30.00th=[ 347], 40.00th=[ 368], 50.00th=[ 393], 60.00th=[ 418], | 70.00th=[ 451], 80.00th=[ 498], 90.00th=[ 567], 95.00th=[ 625], | 99.00th=[ 793], 99.50th=[ 902], 99.90th=[ 969], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 112, per=24.99%, avg=47.74, stdev=21.33, samples=204 iops : min= 1, max= 28, avg=11.43, stdev= 5.35, samples=204 write: IOPS=12, BW=50.4KiB/s (51.6kB/s)(5264KiB/104482msec); 0 zone resets slat (usec): min=39, max=20932, avg=365.75, stdev=1207.71 clat (msec): min=202, max=2424, avg=864.89, stdev=265.47 lat (msec): min=202, max=2424, avg=865.26, stdev=265.50 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 485], 10.00th=[ 550], 20.00th=[ 651], | 30.00th=[ 735], 40.00th=[ 793], 50.00th=[ 852], 60.00th=[ 902], | 70.00th=[ 978], 80.00th=[ 1045], 90.00th=[ 1167], 95.00th=[ 1318], | 99.00th=[ 1603], 99.50th=[ 2039], 99.90th=[ 2400], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 7, max= 128, per=25.14%, avg=50.03, stdev=21.75, samples=206 iops : min= 1, max= 32, avg=12.00, stdev= 5.47, samples=206 lat (msec) : 20=0.08%, 50=0.12%, 100=0.08%, 250=1.05%, 500=41.09% lat (msec) : 750=21.80%, 1000=22.07%, 2000=13.44%, >=2000=0.27% cpu : usr=0.10%, sys=0.69%, ctx=4681, majf=0, minf=15 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1244,1316,0,0 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=146163: Wed Aug 12 16:54:50 2026 read: IOPS=11, BW=47.6KiB/s (48.7kB/s)(4984KiB/104731msec) slat (usec): min=2882, max=79467, avg=15032.70, stdev=8752.22 clat (msec): min=7, max=1002, avg=415.75, stdev=125.07 lat (msec): min=38, max=1021, avg=430.79, stdev=126.32 clat percentiles (msec): | 1.00th=[ 67], 5.00th=[ 251], 10.00th=[ 288], 20.00th=[ 326], | 30.00th=[ 351], 40.00th=[ 376], 50.00th=[ 401], 60.00th=[ 430], | 70.00th=[ 464], 80.00th=[ 506], 90.00th=[ 567], 95.00th=[ 642], | 99.00th=[ 810], 99.50th=[ 894], 99.90th=[ 995], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 104, per=24.74%, avg=47.25, stdev=21.57, samples=207 iops : min= 1, max= 26, avg=11.31, stdev= 5.42, samples=207 write: IOPS=12, BW=50.2KiB/s (51.4kB/s)(5256KiB/104731msec); 0 zone resets slat (usec): min=44, max=13098, avg=300.84, stdev=725.90 clat (msec): min=232, max=2447, avg=863.86, stdev=269.52 lat (msec): min=233, max=2447, avg=864.17, stdev=269.53 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 489], 10.00th=[ 558], 20.00th=[ 651], | 30.00th=[ 726], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 902], | 70.00th=[ 969], 80.00th=[ 1045], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1754], 99.50th=[ 2198], 99.90th=[ 2400], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 7, max= 110, per=24.96%, avg=49.67, stdev=20.46, samples=207 iops : min= 1, max= 27, avg=11.92, stdev= 5.11, samples=207 lat (msec) : 10=0.04%, 50=0.27%, 100=0.31%, 250=1.76%, 500=39.26% lat (msec) : 750=23.75%, 1000=21.33%, 2000=12.97%, >=2000=0.31% cpu : usr=0.09%, sys=0.76%, ctx=4768, majf=0, minf=14 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1246,1314,0,0 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=146164: Wed Aug 12 16:54:50 2026 read: IOPS=12, BW=48.6KiB/s (49.8kB/s)(5060KiB/104080msec) slat (usec): min=2880, max=93813, avg=15163.42, stdev=9427.29 clat (msec): min=20, max=965, avg=414.33, stdev=122.03 lat (msec): min=31, max=981, avg=429.50, stdev=123.77 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 255], 10.00th=[ 288], 20.00th=[ 321], | 30.00th=[ 351], 40.00th=[ 372], 50.00th=[ 397], 60.00th=[ 422], | 70.00th=[ 456], 80.00th=[ 502], 90.00th=[ 575], 95.00th=[ 634], | 99.00th=[ 810], 99.50th=[ 860], 99.90th=[ 944], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7, max= 125, per=25.64%, avg=48.98, stdev=20.74, samples=203 iops : min= 1, max= 31, avg=11.75, stdev= 5.23, samples=203 write: IOPS=12, BW=49.8KiB/s (50.0kB/s)(5180KiB/104080msec); 0 zone resets slat (usec): min=39, max=22254, avg=340.52, stdev=1136.41 clat (msec): min=320, max=2408, avg=862.83, stdev=274.55 lat (msec): min=320, max=2408, avg=863.18, stdev=274.55 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 485], 10.00th=[ 550], 20.00th=[ 651], | 30.00th=[ 718], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 894], | 70.00th=[ 961], 80.00th=[ 1036], 90.00th=[ 1167], 95.00th=[ 1351], | 99.00th=[ 1854], 99.50th=[ 2165], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 7, max= 111, per=24.69%, avg=49.14, stdev=21.94, samples=206 iops : min= 1, max= 27, avg=11.79, stdev= 5.50, samples=206 lat (msec) : 50=0.12%, 100=0.23%, 250=1.76%, 500=40.78%, 750=23.24% lat (msec) : 1000=21.68%, 2000=11.84%, >=2000=0.35% cpu : usr=0.08%, sys=0.67%, ctx=4479, majf=0, minf=14 IO depths : 1=0.1%, 2=0.1%, 4=0.2%, 8=0.3%, 16=99.4%, 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=0.1%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=1265,1295,0,0 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=192KiB/s (196kB/s), 47.6KiB/s-48.6KiB/s (48.7kB/s-49.8kB/s), io=19.6MiB (20.5MB), run=104080-104731msec WRITE: bw=199KiB/s (204kB/s), 49.6KiB/s-50.4KiB/s (50.8kB/s-51.6kB/s), io=20.4MiB (21.4MB), run=104080-104731msec AIO with large block size 40M rand-rw: (g=0): rw=randrw, bs=(R) 40.0MiB-40.0MiB, (W) 40.0MiB-40.0MiB, (T) 40.0MiB-40.0MiB, ioengine=libaio, iodepth=16 fio-3.19 Starting 1 process rand-rw: (groupid=0, jobs=1): err= 0: pid=146183: Wed Aug 12 16:55:03 2026 read: IOPS=1, BW=58.9MiB/s (61.8MB/s)(40.0MiB/679msec) slat (nsec): min=52639k, max=52639k, avg=52639353.00, stdev= 0.00 clat (nsec): min=593711k, max=593711k, avg=593711449.00, stdev= 0.00 lat (nsec): min=646355k, max=646355k, avg=646355082.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 592], 10.00th=[ 592], 20.00th=[ 592], | 30.00th=[ 592], 40.00th=[ 592], 50.00th=[ 592], 60.00th=[ 592], | 70.00th=[ 592], 80.00th=[ 592], 90.00th=[ 592], 95.00th=[ 592], | 99.00th=[ 592], 99.50th=[ 592], 99.90th=[ 592], 99.95th=[ 592], | 99.99th=[ 592] lat (msec) : 750=100.00% cpu : usr=0.44%, sys=2.36%, ctx=44, 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=1,0,0,0 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=58.9MiB/s (61.8MB/s), 58.9MiB/s-58.9MiB/s (61.8MB/s-61.8MB/s), io=40.0MiB (41.9MB), run=679-679msec debug=trace inode super iotrace malloc cache info ioctl neterror net warning buffs other dentry nettrace page dlmtrace error emerg ha rpctrace vfstrace reada mmap config console quota sec lfsck hsm snapshot layout