== sanity test 398c: run fio to test AIO ================= 05:16:34 (1787822194) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.564497 s, 74.3 MB/s osc.lustre-OST0000-osc-ffff970cf95bb000.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=145371: Thu Aug 27 05:19:04 2026 write: IOPS=18, BW=72.4KiB/s (74.1kB/s)(10.0MiB/141444msec); 0 zone resets slat (usec): min=26, max=24537, avg=178.25, stdev=813.46 clat (msec): min=215, max=1640, avg=882.87, stdev=208.01 lat (msec): min=215, max=1640, avg=883.05, stdev=208.02 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 567], 10.00th=[ 634], 20.00th=[ 693], | 30.00th=[ 768], 40.00th=[ 818], 50.00th=[ 869], 60.00th=[ 919], | 70.00th=[ 969], 80.00th=[ 1045], 90.00th=[ 1167], 95.00th=[ 1267], | 99.00th=[ 1401], 99.50th=[ 1469], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1636] bw ( KiB/s): min= 7, max= 128, per=25.29%, avg=73.10, stdev=32.05, samples=276 iops : min= 1, max= 32, avg=17.84, stdev= 8.03, samples=276 lat (msec) : 250=0.04%, 500=1.88%, 750=25.62%, 1000=46.25%, 2000=26.21% cpu : usr=0.03%, sys=0.21%, ctx=1511, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=145372: Thu Aug 27 05:19:04 2026 write: IOPS=18, BW=72.4KiB/s (74.2kB/s)(10.0MiB/141360msec); 0 zone resets slat (usec): min=26, max=25439, avg=181.38, stdev=756.52 clat (msec): min=342, max=1643, avg=882.59, stdev=211.69 lat (msec): min=342, max=1643, avg=882.77, stdev=211.72 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 567], 10.00th=[ 634], 20.00th=[ 701], | 30.00th=[ 768], 40.00th=[ 818], 50.00th=[ 860], 60.00th=[ 911], | 70.00th=[ 969], 80.00th=[ 1062], 90.00th=[ 1167], 95.00th=[ 1284], | 99.00th=[ 1418], 99.50th=[ 1469], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1636] bw ( KiB/s): min= 8, max= 132, per=25.57%, avg=73.90, stdev=28.93, samples=273 iops : min= 2, max= 33, avg=18.04, stdev= 7.26, samples=273 lat (msec) : 500=1.48%, 750=25.62%, 1000=46.29%, 2000=26.60% cpu : usr=0.04%, sys=0.23%, ctx=1974, 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=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=145373: Thu Aug 27 05:19:04 2026 write: IOPS=18, BW=72.4KiB/s (74.1kB/s)(10.0MiB/141445msec); 0 zone resets slat (usec): min=28, max=13181, avg=166.22, stdev=586.33 clat (msec): min=307, max=1643, avg=882.86, stdev=205.73 lat (msec): min=310, max=1644, avg=883.03, stdev=205.73 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 575], 10.00th=[ 634], 20.00th=[ 701], | 30.00th=[ 768], 40.00th=[ 818], 50.00th=[ 860], 60.00th=[ 911], | 70.00th=[ 978], 80.00th=[ 1062], 90.00th=[ 1167], 95.00th=[ 1250], | 99.00th=[ 1401], 99.50th=[ 1435], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1636] bw ( KiB/s): min= 8, max= 143, per=25.50%, avg=73.68, stdev=28.05, samples=274 iops : min= 2, max= 35, avg=17.99, stdev= 7.02, samples=274 lat (msec) : 500=1.64%, 750=25.51%, 1000=46.25%, 2000=26.60% cpu : usr=0.05%, sys=0.22%, ctx=1800, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=145374: Thu Aug 27 05:19:04 2026 write: IOPS=18, BW=72.5KiB/s (74.3kB/s)(10.0MiB/141193msec); 0 zone resets slat (usec): min=27, max=11748, avg=164.53, stdev=534.48 clat (msec): min=146, max=1889, avg=881.94, stdev=214.31 lat (msec): min=146, max=1889, avg=882.11, stdev=214.30 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 567], 10.00th=[ 625], 20.00th=[ 701], | 30.00th=[ 760], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 911], | 70.00th=[ 986], 80.00th=[ 1062], 90.00th=[ 1167], 95.00th=[ 1267], | 99.00th=[ 1401], 99.50th=[ 1485], 99.90th=[ 1603], 99.95th=[ 1636], | 99.99th=[ 1888] bw ( KiB/s): min= 7, max= 128, per=25.02%, avg=72.31, stdev=30.72, samples=279 iops : min= 1, max= 32, avg=17.64, stdev= 7.73, samples=279 lat (msec) : 250=0.55%, 500=0.51%, 750=26.48%, 1000=45.98%, 2000=26.48% cpu : usr=0.04%, sys=0.20%, ctx=1768, 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=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=290KiB/s (297kB/s), 72.4KiB/s-72.5KiB/s (74.1kB/s-74.3kB/s), io=40.0MiB (41.9MB), run=141193-141445msec 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=145404: Thu Aug 27 05:20:54 2026 read: IOPS=12, BW=50.1KiB/s (51.3kB/s)(5048KiB/100736msec) slat (usec): min=34, max=62059, avg=12655.68, stdev=6919.37 clat (msec): min=9, max=918, avg=387.48, stdev=110.09 lat (msec): min=13, max=951, avg=400.14, stdev=111.50 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 247], 10.00th=[ 275], 20.00th=[ 305], | 30.00th=[ 326], 40.00th=[ 347], 50.00th=[ 368], 60.00th=[ 393], | 70.00th=[ 426], 80.00th=[ 464], 90.00th=[ 531], 95.00th=[ 575], | 99.00th=[ 785], 99.50th=[ 844], 99.90th=[ 911], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 8, max= 127, per=25.59%, avg=50.42, stdev=23.38, samples=197 iops : min= 2, max= 31, avg=12.18, stdev= 5.85, samples=197 write: IOPS=12, BW=51.5KiB/s (52.8kB/s)(5192KiB/100736msec); 0 zone resets slat (usec): min=27, max=27125, avg=234.90, stdev=1006.04 clat (msec): min=204, max=2035, avg=851.33, stdev=260.91 lat (msec): min=204, max=2035, avg=851.56, stdev=260.90 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 485], 10.00th=[ 550], 20.00th=[ 625], | 30.00th=[ 684], 40.00th=[ 768], 50.00th=[ 827], 60.00th=[ 877], | 70.00th=[ 953], 80.00th=[ 1053], 90.00th=[ 1234], 95.00th=[ 1351], | 99.00th=[ 1536], 99.50th=[ 1653], 99.90th=[ 1854], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 102, per=24.96%, avg=51.17, stdev=20.10, samples=199 iops : min= 1, max= 25, avg=12.37, stdev= 5.03, samples=199 lat (msec) : 10=0.04%, 50=0.04%, 100=0.16%, 250=2.77%, 500=42.03% lat (msec) : 750=23.24%, 1000=18.67%, 2000=13.01%, >=2000=0.04% cpu : usr=0.10%, sys=0.56%, ctx=4867, 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=145405: Thu Aug 27 05:20:54 2026 read: IOPS=12, BW=49.1KiB/s (50.2kB/s)(4976KiB/101418msec) slat (msec): min=2, max=278, avg=13.19, stdev=10.54 clat (msec): min=21, max=826, avg=381.49, stdev=103.23 lat (msec): min=27, max=837, avg=394.69, stdev=104.06 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 245], 10.00th=[ 279], 20.00th=[ 305], | 30.00th=[ 330], 40.00th=[ 347], 50.00th=[ 368], 60.00th=[ 388], | 70.00th=[ 418], 80.00th=[ 460], 90.00th=[ 510], 95.00th=[ 558], | 99.00th=[ 709], 99.50th=[ 743], 99.90th=[ 810], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 136, per=24.93%, avg=49.11, stdev=25.01, samples=198 iops : min= 1, max= 34, avg=11.84, stdev= 6.28, samples=198 write: IOPS=12, BW=51.9KiB/s (53.1kB/s)(5264KiB/101418msec); 0 zone resets slat (usec): min=33, max=12772, avg=202.75, stdev=679.32 clat (msec): min=282, max=1940, avg=857.21, stdev=260.63 lat (msec): min=282, max=1940, avg=857.41, stdev=260.63 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 481], 10.00th=[ 558], 20.00th=[ 634], | 30.00th=[ 701], 40.00th=[ 768], 50.00th=[ 835], 60.00th=[ 894], | 70.00th=[ 953], 80.00th=[ 1062], 90.00th=[ 1217], 95.00th=[ 1334], | 99.00th=[ 1603], 99.50th=[ 1670], 99.90th=[ 1905], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 7, max= 111, per=24.98%, avg=51.21, stdev=20.99, samples=201 iops : min= 1, max= 27, avg=12.37, stdev= 5.23, samples=201 lat (msec) : 50=0.16%, 100=0.31%, 250=2.19%, 500=43.48%, 750=21.52% lat (msec) : 1000=19.26%, 2000=13.09% cpu : usr=0.09%, sys=0.53%, ctx=4762, 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=145406: Thu Aug 27 05:20:54 2026 read: IOPS=12, BW=49.2KiB/s (50.3kB/s)(4984KiB/101375msec) slat (usec): min=2709, max=62645, avg=13134.78, stdev=7241.62 clat (msec): min=14, max=859, avg=387.84, stdev=106.65 lat (msec): min=25, max=886, avg=400.98, stdev=108.25 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 249], 10.00th=[ 275], 20.00th=[ 309], | 30.00th=[ 330], 40.00th=[ 355], 50.00th=[ 372], 60.00th=[ 397], | 70.00th=[ 422], 80.00th=[ 460], 90.00th=[ 527], 95.00th=[ 584], | 99.00th=[ 735], 99.50th=[ 776], 99.90th=[ 835], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7, max= 128, per=24.98%, avg=49.21, stdev=24.59, samples=199 iops : min= 1, max= 32, avg=11.87, stdev= 6.17, samples=199 write: IOPS=12, BW=51.8KiB/s (53.1kB/s)(5256KiB/101375msec); 0 zone resets slat (usec): min=34, max=22283, avg=246.95, stdev=1116.73 clat (msec): min=270, max=1909, avg=851.18, stdev=266.65 lat (msec): min=272, max=1909, avg=851.43, stdev=266.65 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 489], 10.00th=[ 542], 20.00th=[ 625], | 30.00th=[ 684], 40.00th=[ 760], 50.00th=[ 827], 60.00th=[ 885], | 70.00th=[ 961], 80.00th=[ 1053], 90.00th=[ 1217], 95.00th=[ 1318], | 99.00th=[ 1636], 99.50th=[ 1687], 99.90th=[ 1888], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 7, max= 103, per=24.94%, avg=51.12, stdev=21.10, samples=200 iops : min= 1, max= 25, avg=12.35, stdev= 5.25, samples=200 lat (msec) : 20=0.08%, 50=0.04%, 100=0.20%, 250=2.15%, 500=42.89% lat (msec) : 750=22.85%, 1000=18.75%, 2000=13.05% cpu : usr=0.10%, sys=0.59%, ctx=4614, 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=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=145407: Thu Aug 27 05:20:54 2026 read: IOPS=12, BW=50.0KiB/s (51.2kB/s)(5060KiB/101132msec) slat (usec): min=2670, max=58230, avg=12835.35, stdev=7203.47 clat (msec): min=9, max=1016, avg=392.27, stdev=110.97 lat (msec): min=18, max=1021, avg=405.11, stdev=112.13 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 253], 10.00th=[ 279], 20.00th=[ 309], | 30.00th=[ 330], 40.00th=[ 355], 50.00th=[ 376], 60.00th=[ 405], | 70.00th=[ 430], 80.00th=[ 472], 90.00th=[ 531], 95.00th=[ 592], | 99.00th=[ 718], 99.50th=[ 760], 99.90th=[ 995], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 127, per=25.43%, avg=50.09, stdev=22.46, samples=199 iops : min= 1, max= 31, avg=12.10, stdev= 5.60, samples=199 write: IOPS=12, BW=51.2KiB/s (52.4kB/s)(5180KiB/101132msec); 0 zone resets slat (usec): min=29, max=24227, avg=273.27, stdev=1253.25 clat (msec): min=174, max=2038, avg=850.87, stdev=259.21 lat (msec): min=175, max=2038, avg=851.15, stdev=259.23 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 498], 10.00th=[ 550], 20.00th=[ 625], | 30.00th=[ 701], 40.00th=[ 760], 50.00th=[ 818], 60.00th=[ 885], | 70.00th=[ 953], 80.00th=[ 1053], 90.00th=[ 1217], 95.00th=[ 1318], | 99.00th=[ 1620], 99.50th=[ 1653], 99.90th=[ 1838], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 8, max= 112, per=24.63%, avg=50.50, stdev=20.08, samples=201 iops : min= 2, max= 28, avg=12.20, stdev= 5.03, samples=201 lat (msec) : 10=0.04%, 50=0.12%, 100=0.12%, 250=2.23%, 500=42.34% lat (msec) : 750=23.95%, 1000=18.79%, 2000=12.38%, >=2000=0.04% cpu : usr=0.10%, sys=0.57%, ctx=4706, 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=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-50.1KiB/s (50.2kB/s-51.3kB/s), io=19.6MiB (20.5MB), run=100736-101418msec WRITE: bw=206KiB/s (211kB/s), 51.2KiB/s-51.9KiB/s (52.4kB/s-53.1kB/s), io=20.4MiB (21.4MB), run=100736-101418msec 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=145425: Thu Aug 27 05:21:03 2026 read: IOPS=2, BW=85.7MiB/s (89.8MB/s)(40.0MiB/467msec) slat (nsec): min=30067k, max=30067k, avg=30066694.00, stdev= 0.00 clat (nsec): min=420701k, max=420701k, avg=420700835.00, stdev= 0.00 lat (nsec): min=450773k, max=450773k, avg=450772604.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=1.93%, ctx=26, 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=85.7MiB/s (89.8MB/s), 85.7MiB/s-85.7MiB/s (89.8MB/s-89.8MB/s), io=40.0MiB (41.9MB), run=467-467msec 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