== sanity test 398c: run fio to test AIO ================= 20:54:18 (1789606458) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.65151 s, 64.4 MB/s osc.lustre-OST0000-osc-ffff9aa8d9b6b000.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=145240: Wed Sep 16 20:56:59 2026 write: IOPS=17, BW=68.4KiB/s (70.1kB/s)(10.0MiB/149602msec); 0 zone resets slat (usec): min=22, max=23281, avg=265.98, stdev=1040.73 clat (msec): min=305, max=2010, avg=933.60, stdev=257.71 lat (msec): min=305, max=2010, avg=933.86, stdev=257.69 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 542], 10.00th=[ 642], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 860], 50.00th=[ 927], 60.00th=[ 986], | 70.00th=[ 1045], 80.00th=[ 1133], 90.00th=[ 1234], 95.00th=[ 1351], | 99.00th=[ 1703], 99.50th=[ 1838], 99.90th=[ 1938], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 7, max= 128, per=25.00%, avg=68.24, stdev=30.58, samples=295 iops : min= 1, max= 32, avg=16.57, stdev= 7.67, samples=295 lat (msec) : 500=4.38%, 750=18.75%, 1000=40.47%, 2000=36.33%, >=2000=0.08% cpu : usr=0.04%, sys=0.27%, ctx=1686, majf=0, minf=8 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=145241: Wed Sep 16 20:56:59 2026 write: IOPS=17, BW=68.5KiB/s (70.1kB/s)(10.0MiB/149540msec); 0 zone resets slat (usec): min=21, max=24336, avg=267.75, stdev=1095.19 clat (msec): min=230, max=1915, avg=932.99, stdev=258.54 lat (msec): min=230, max=1916, avg=933.26, stdev=258.52 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 527], 10.00th=[ 634], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 978], | 70.00th=[ 1062], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1368], | 99.00th=[ 1670], 99.50th=[ 1720], 99.90th=[ 1888], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 7, max= 161, per=24.91%, avg=68.00, stdev=28.67, samples=296 iops : min= 1, max= 40, avg=16.52, stdev= 7.19, samples=296 lat (msec) : 250=0.04%, 500=4.65%, 750=18.75%, 1000=39.65%, 2000=36.91% cpu : usr=0.06%, sys=0.29%, ctx=1991, 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=145242: Wed Sep 16 20:56:59 2026 write: IOPS=17, BW=68.4KiB/s (70.1kB/s)(10.0MiB/149650msec); 0 zone resets slat (usec): min=22, max=22018, avg=281.76, stdev=1132.64 clat (msec): min=296, max=2130, avg=933.95, stdev=255.89 lat (msec): min=296, max=2130, avg=934.24, stdev=255.88 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 558], 10.00th=[ 651], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 978], | 70.00th=[ 1053], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1351], | 99.00th=[ 1703], 99.50th=[ 1838], 99.90th=[ 2022], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 7, max= 131, per=24.83%, avg=67.79, stdev=28.76, samples=297 iops : min= 1, max= 32, avg=16.46, stdev= 7.22, samples=297 lat (msec) : 500=3.95%, 750=20.27%, 1000=38.71%, 2000=36.88%, >=2000=0.20% cpu : usr=0.05%, sys=0.28%, ctx=1888, majf=0, minf=8 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=145243: Wed Sep 16 20:56:59 2026 write: IOPS=17, BW=68.4KiB/s (70.1kB/s)(10.0MiB/149654msec); 0 zone resets slat (usec): min=21, max=20620, avg=250.15, stdev=965.31 clat (msec): min=177, max=2011, avg=934.48, stdev=260.58 lat (msec): min=177, max=2011, avg=934.73, stdev=260.56 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 523], 10.00th=[ 642], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 869], 50.00th=[ 927], 60.00th=[ 986], | 70.00th=[ 1053], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1368], | 99.00th=[ 1687], 99.50th=[ 1770], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 2005] bw ( KiB/s): min= 7, max= 183, per=24.99%, avg=68.23, stdev=28.39, samples=295 iops : min= 1, max= 45, avg=16.57, stdev= 7.13, samples=295 lat (msec) : 250=0.43%, 500=4.34%, 750=18.67%, 1000=39.53%, 2000=36.99% lat (msec) : >=2000=0.04% cpu : usr=0.05%, sys=0.27%, ctx=1596, 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 Run status group 0 (all jobs): WRITE: bw=274KiB/s (280kB/s), 68.4KiB/s-68.5KiB/s (70.1kB/s-70.1kB/s), io=40.0MiB (41.9MB), run=149540-149654msec 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=145276: Wed Sep 16 20:58:50 2026 read: IOPS=12, BW=49.8KiB/s (50.0kB/s)(5048KiB/101418msec) slat (usec): min=2730, max=68282, avg=14770.77, stdev=8109.09 clat (msec): min=18, max=935, avg=394.40, stdev=118.35 lat (msec): min=40, max=943, avg=409.18, stdev=120.08 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 245], 10.00th=[ 266], 20.00th=[ 305], | 30.00th=[ 330], 40.00th=[ 359], 50.00th=[ 376], 60.00th=[ 401], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 542], 95.00th=[ 617], | 99.00th=[ 760], 99.50th=[ 810], 99.90th=[ 902], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 119, per=25.20%, avg=49.65, stdev=24.46, samples=199 iops : min= 1, max= 29, avg=11.89, stdev= 6.19, samples=199 write: IOPS=12, BW=51.2KiB/s (52.4kB/s)(5192KiB/101418msec); 0 zone resets slat (usec): min=24, max=12526, avg=372.02, stdev=1087.67 clat (msec): min=262, max=1795, avg=847.82, stdev=236.61 lat (msec): min=262, max=1796, avg=848.19, stdev=236.59 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 523], 10.00th=[ 567], 20.00th=[ 642], | 30.00th=[ 709], 40.00th=[ 760], 50.00th=[ 818], 60.00th=[ 885], | 70.00th=[ 961], 80.00th=[ 1045], 90.00th=[ 1150], 95.00th=[ 1267], | 99.00th=[ 1536], 99.50th=[ 1653], 99.90th=[ 1787], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 111, per=24.81%, avg=50.86, stdev=20.02, samples=200 iops : min= 1, max= 27, avg=12.21, stdev= 5.02, samples=200 lat (msec) : 20=0.04%, 50=0.12%, 100=0.12%, 250=2.97%, 500=40.00% lat (msec) : 750=24.73%, 1000=18.98%, 2000=13.05% cpu : usr=0.15%, sys=0.76%, ctx=4242, majf=0, minf=12 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=145277: Wed Sep 16 20:58:50 2026 read: IOPS=12, BW=49.1KiB/s (50.3kB/s)(4976KiB/101317msec) slat (usec): min=2482, max=70364, avg=14933.30, stdev=8263.56 clat (msec): min=27, max=826, avg=400.49, stdev=118.52 lat (msec): min=35, max=896, avg=415.44, stdev=119.86 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 241], 10.00th=[ 268], 20.00th=[ 309], | 30.00th=[ 334], 40.00th=[ 359], 50.00th=[ 380], 60.00th=[ 409], | 70.00th=[ 439], 80.00th=[ 481], 90.00th=[ 558], 95.00th=[ 642], | 99.00th=[ 768], 99.50th=[ 785], 99.90th=[ 818], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 128, per=24.69%, avg=48.64, stdev=21.95, samples=200 iops : min= 1, max= 32, avg=11.64, stdev= 5.52, samples=200 write: IOPS=12, BW=51.0KiB/s (53.2kB/s)(5264KiB/101317msec); 0 zone resets slat (usec): min=30, max=28424, avg=444.47, stdev=1699.60 clat (msec): min=136, max=1756, avg=835.84, stdev=240.40 lat (msec): min=137, max=1756, avg=836.29, stdev=240.42 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 514], 10.00th=[ 550], 20.00th=[ 617], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 802], 60.00th=[ 860], | 70.00th=[ 953], 80.00th=[ 1036], 90.00th=[ 1167], 95.00th=[ 1267], | 99.00th=[ 1469], 99.50th=[ 1536], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 120, per=25.06%, avg=51.37, stdev=20.65, samples=201 iops : min= 1, max= 30, avg=12.33, stdev= 5.22, samples=201 lat (msec) : 50=0.04%, 100=0.08%, 250=3.12%, 500=39.02%, 750=26.21% lat (msec) : 1000=18.91%, 2000=12.62% cpu : usr=0.13%, sys=0.80%, ctx=4246, 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=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=145278: Wed Sep 16 20:58:50 2026 read: IOPS=12, BW=49.1KiB/s (50.3kB/s)(4984KiB/101428msec) slat (usec): min=3022, max=71337, avg=15052.47, stdev=8457.15 clat (msec): min=21, max=922, avg=394.91, stdev=115.03 lat (msec): min=44, max=946, avg=409.98, stdev=116.64 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 249], 10.00th=[ 271], 20.00th=[ 309], | 30.00th=[ 330], 40.00th=[ 355], 50.00th=[ 376], 60.00th=[ 401], | 70.00th=[ 435], 80.00th=[ 468], 90.00th=[ 542], 95.00th=[ 625], | 99.00th=[ 751], 99.50th=[ 827], 99.90th=[ 902], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 127, per=24.80%, avg=48.87, stdev=23.69, samples=200 iops : min= 1, max= 31, avg=11.70, stdev= 5.98, samples=200 write: IOPS=12, BW=51.8KiB/s (53.1kB/s)(5256KiB/101428msec); 0 zone resets slat (usec): min=29, max=22032, avg=384.08, stdev=1320.61 clat (msec): min=223, max=1665, avg=842.43, stdev=237.22 lat (msec): min=224, max=1665, avg=842.82, stdev=237.21 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 514], 10.00th=[ 567], 20.00th=[ 634], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 818], 60.00th=[ 885], | 70.00th=[ 953], 80.00th=[ 1036], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1452], 99.50th=[ 1502], 99.90th=[ 1653], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 7, max= 104, per=25.08%, avg=51.41, stdev=21.06, samples=200 iops : min= 1, max= 26, avg=12.34, stdev= 5.33, samples=200 lat (msec) : 50=0.04%, 100=0.20%, 250=2.54%, 500=41.17%, 750=24.57% lat (msec) : 1000=18.87%, 2000=12.62% cpu : usr=0.13%, sys=0.78%, ctx=4397, majf=0, minf=12 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=145279: Wed Sep 16 20:58:50 2026 read: IOPS=12, BW=50.2KiB/s (51.4kB/s)(5060KiB/100713msec) slat (usec): min=38, max=58708, avg=15313.47, stdev=8425.75 clat (msec): min=24, max=916, avg=398.44, stdev=116.73 lat (msec): min=43, max=960, avg=413.77, stdev=117.94 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 247], 10.00th=[ 275], 20.00th=[ 309], | 30.00th=[ 334], 40.00th=[ 355], 50.00th=[ 380], 60.00th=[ 405], | 70.00th=[ 443], 80.00th=[ 485], 90.00th=[ 550], 95.00th=[ 634], | 99.00th=[ 751], 99.50th=[ 785], 99.90th=[ 877], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 111, per=25.36%, avg=49.95, stdev=22.49, samples=199 iops : min= 1, max= 27, avg=11.97, stdev= 5.65, samples=199 write: IOPS=12, BW=51.4KiB/s (52.7kB/s)(5180KiB/100713msec); 0 zone resets slat (usec): min=23, max=17097, avg=363.38, stdev=1125.04 clat (msec): min=162, max=1693, avg=838.80, stdev=242.81 lat (msec): min=163, max=1693, avg=839.16, stdev=242.82 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 502], 10.00th=[ 558], 20.00th=[ 625], | 30.00th=[ 693], 40.00th=[ 743], 50.00th=[ 802], 60.00th=[ 869], | 70.00th=[ 944], 80.00th=[ 1036], 90.00th=[ 1167], 95.00th=[ 1267], | 99.00th=[ 1536], 99.50th=[ 1569], 99.90th=[ 1653], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 7, max= 111, per=24.77%, avg=50.78, stdev=21.07, samples=199 iops : min= 1, max= 27, avg=12.19, stdev= 5.30, samples=199 lat (msec) : 50=0.04%, 100=0.16%, 250=2.66%, 500=40.82%, 750=25.90% lat (msec) : 1000=18.24%, 2000=12.19% cpu : usr=0.14%, sys=0.85%, ctx=4935, 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=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=198KiB/s (203kB/s), 49.1KiB/s-50.2KiB/s (50.3kB/s-51.4kB/s), io=19.6MiB (20.5MB), run=100713-101428msec WRITE: bw=206KiB/s (211kB/s), 51.2KiB/s-51.0KiB/s (52.4kB/s-53.2kB/s), io=20.4MiB (21.4MB), run=100713-101428msec 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=145297: Wed Sep 16 20:59:03 2026 read: IOPS=1, BW=63.1MiB/s (66.2MB/s)(40.0MiB/634msec) slat (nsec): min=48257k, max=48257k, avg=48256774.00, stdev= 0.00 clat (nsec): min=540787k, max=540787k, avg=540787366.00, stdev= 0.00 lat (nsec): min=589049k, max=589049k, avg=589048525.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 542], 10.00th=[ 542], 20.00th=[ 542], | 30.00th=[ 542], 40.00th=[ 542], 50.00th=[ 542], 60.00th=[ 542], | 70.00th=[ 542], 80.00th=[ 542], 90.00th=[ 542], 95.00th=[ 542], | 99.00th=[ 542], 99.50th=[ 542], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=2.05%, ctx=43, 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=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=63.1MiB/s (66.2MB/s), 63.1MiB/s-63.1MiB/s (66.2MB/s-66.2MB/s), io=40.0MiB (41.9MB), run=634-634msec 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