== sanity test 398c: run fio to test AIO ================= 22:32:33 (1787711553) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.461059 s, 91.0 MB/s osc.lustre-OST0000-osc-ffff8ca6c732b800.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=146200: Tue Aug 25 22:35:23 2026 write: IOPS=15, BW=63.9KiB/s (65.5kB/s)(10.0MiB/160202msec); 0 zone resets slat (usec): min=28, max=19523, avg=226.69, stdev=977.65 clat (msec): min=73, max=2280, avg=1000.31, stdev=280.08 lat (msec): min=73, max=2280, avg=1000.54, stdev=280.07 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 625], 10.00th=[ 726], 20.00th=[ 818], | 30.00th=[ 877], 40.00th=[ 936], 50.00th=[ 986], 60.00th=[ 1036], | 70.00th=[ 1099], 80.00th=[ 1200], 90.00th=[ 1334], 95.00th=[ 1435], | 99.00th=[ 1871], 99.50th=[ 2123], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 7, max= 246, per=24.85%, avg=63.37, stdev=31.39, samples=318 iops : min= 1, max= 61, avg=15.39, stdev= 7.87, samples=318 lat (msec) : 100=0.08%, 250=1.88%, 500=2.19%, 750=7.50%, 1000=42.27% lat (msec) : 2000=45.23%, >=2000=0.86% cpu : usr=0.04%, sys=0.21%, ctx=2155, 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=146201: Tue Aug 25 22:35:23 2026 write: IOPS=15, BW=63.9KiB/s (65.4kB/s)(10.0MiB/160328msec); 0 zone resets slat (usec): min=22, max=18802, avg=198.92, stdev=896.84 clat (msec): min=226, max=2352, avg=1001.15, stdev=272.37 lat (msec): min=226, max=2352, avg=1001.35, stdev=272.38 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 592], 10.00th=[ 735], 20.00th=[ 818], | 30.00th=[ 885], 40.00th=[ 936], 50.00th=[ 986], 60.00th=[ 1036], | 70.00th=[ 1099], 80.00th=[ 1183], 90.00th=[ 1318], 95.00th=[ 1435], | 99.00th=[ 1821], 99.50th=[ 2072], 99.90th=[ 2265], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 7, max= 254, per=24.77%, avg=63.18, stdev=28.10, samples=319 iops : min= 1, max= 63, avg=15.34, stdev= 7.06, samples=319 lat (msec) : 250=0.94%, 500=3.01%, 750=7.19%, 1000=42.93%, 2000=45.43% lat (msec) : >=2000=0.51% cpu : usr=0.03%, sys=0.23%, ctx=1958, 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=146202: Tue Aug 25 22:35:23 2026 write: IOPS=16, BW=64.0KiB/s (65.6kB/s)(10.0MiB/159888msec); 0 zone resets slat (usec): min=25, max=13901, avg=190.89, stdev=637.45 clat (msec): min=133, max=2272, avg=998.75, stdev=281.59 lat (msec): min=133, max=2272, avg=998.94, stdev=281.57 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 584], 10.00th=[ 726], 20.00th=[ 818], | 30.00th=[ 885], 40.00th=[ 936], 50.00th=[ 986], 60.00th=[ 1045], | 70.00th=[ 1099], 80.00th=[ 1183], 90.00th=[ 1334], 95.00th=[ 1452], | 99.00th=[ 1804], 99.50th=[ 2089], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 7, max= 256, per=25.75%, avg=65.65, stdev=33.69, samples=307 iops : min= 1, max= 64, avg=15.97, stdev= 8.46, samples=307 lat (msec) : 250=1.29%, 500=3.16%, 750=7.50%, 1000=40.94%, 2000=46.52% lat (msec) : >=2000=0.59% cpu : usr=0.04%, sys=0.19%, ctx=1815, 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=146203: Tue Aug 25 22:35:23 2026 write: IOPS=15, BW=63.9KiB/s (65.5kB/s)(10.0MiB/160196msec); 0 zone resets slat (usec): min=28, max=14292, avg=195.18, stdev=734.29 clat (msec): min=163, max=2273, avg=1000.16, stdev=277.07 lat (msec): min=163, max=2274, avg=1000.35, stdev=277.05 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 584], 10.00th=[ 735], 20.00th=[ 827], | 30.00th=[ 877], 40.00th=[ 936], 50.00th=[ 978], 60.00th=[ 1036], | 70.00th=[ 1099], 80.00th=[ 1183], 90.00th=[ 1334], 95.00th=[ 1452], | 99.00th=[ 1821], 99.50th=[ 2140], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 8, max= 254, per=25.01%, avg=63.78, stdev=28.14, samples=316 iops : min= 2, max= 63, avg=15.50, stdev= 7.05, samples=316 lat (msec) : 250=1.56%, 500=2.34%, 750=7.11%, 1000=43.71%, 2000=44.65% lat (msec) : >=2000=0.62% cpu : usr=0.04%, sys=0.18%, ctx=1776, 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 Run status group 0 (all jobs): WRITE: bw=255KiB/s (262kB/s), 63.9KiB/s-64.0KiB/s (65.4kB/s-65.6kB/s), io=40.0MiB (41.9MB), run=159888-160328msec 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=146236: Tue Aug 25 22:37:21 2026 read: IOPS=11, BW=46.7KiB/s (47.8kB/s)(5048KiB/108036msec) slat (usec): min=2700, max=57410, avg=13924.42, stdev=7899.90 clat (msec): min=57, max=761, avg=418.58, stdev=94.59 lat (msec): min=64, max=789, avg=432.51, stdev=95.39 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 275], 10.00th=[ 309], 20.00th=[ 338], | 30.00th=[ 363], 40.00th=[ 393], 50.00th=[ 414], 60.00th=[ 443], | 70.00th=[ 468], 80.00th=[ 498], 90.00th=[ 542], 95.00th=[ 584], | 99.00th=[ 634], 99.50th=[ 651], 99.90th=[ 751], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 103, per=25.07%, avg=46.38, stdev=20.08, samples=214 iops : min= 1, max= 25, avg=11.15, stdev= 5.04, samples=214 write: IOPS=12, BW=48.1KiB/s (49.2kB/s)(5192KiB/108036msec); 0 zone resets slat (usec): min=28, max=19407, avg=298.90, stdev=1129.07 clat (msec): min=295, max=1789, avg=907.91, stdev=238.90 lat (msec): min=295, max=1789, avg=908.21, stdev=238.90 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 542], 10.00th=[ 609], 20.00th=[ 701], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 885], 60.00th=[ 961], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1234], 95.00th=[ 1334], | 99.00th=[ 1469], 99.50th=[ 1552], 99.90th=[ 1787], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 111, per=24.87%, avg=47.74, stdev=20.40, samples=213 iops : min= 1, max= 27, avg=11.50, stdev= 5.17, samples=213 lat (msec) : 100=0.16%, 250=1.02%, 500=40.35%, 750=21.21%, 1000=19.96% lat (msec) : 2000=17.30% cpu : usr=0.09%, sys=0.56%, ctx=4544, 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=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=146237: Tue Aug 25 22:37:21 2026 read: IOPS=11, BW=45.0KiB/s (47.1kB/s)(4976KiB/108278msec) slat (usec): min=3161, max=54696, avg=14011.63, stdev=7612.94 clat (msec): min=22, max=699, avg=415.90, stdev=99.18 lat (msec): min=34, max=704, avg=429.91, stdev=99.71 clat percentiles (msec): | 1.00th=[ 110], 5.00th=[ 275], 10.00th=[ 300], 20.00th=[ 338], | 30.00th=[ 363], 40.00th=[ 388], 50.00th=[ 414], 60.00th=[ 435], | 70.00th=[ 464], 80.00th=[ 502], 90.00th=[ 550], 95.00th=[ 584], | 99.00th=[ 642], 99.50th=[ 659], 99.90th=[ 693], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 120, per=24.74%, avg=45.77, stdev=20.91, samples=213 iops : min= 1, max= 30, avg=11.00, stdev= 5.26, samples=213 write: IOPS=12, BW=48.6KiB/s (49.8kB/s)(5264KiB/108278msec); 0 zone resets slat (usec): min=31, max=15412, avg=236.95, stdev=809.49 clat (msec): min=136, max=1789, avg=907.61, stdev=243.39 lat (msec): min=137, max=1789, avg=907.84, stdev=243.43 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 550], 10.00th=[ 617], 20.00th=[ 701], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 885], 60.00th=[ 953], | 70.00th=[ 1028], 80.00th=[ 1116], 90.00th=[ 1234], 95.00th=[ 1351], | 99.00th=[ 1469], 99.50th=[ 1586], 99.90th=[ 1720], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 120, per=24.98%, avg=47.96, stdev=20.05, samples=215 iops : min= 1, max= 30, avg=11.55, stdev= 5.01, samples=215 lat (msec) : 50=0.20%, 100=0.27%, 250=0.94%, 500=39.18%, 750=22.30% lat (msec) : 1000=19.61%, 2000=17.50% cpu : usr=0.08%, sys=0.55%, ctx=4453, 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=146238: Tue Aug 25 22:37:21 2026 read: IOPS=11, BW=46.1KiB/s (47.2kB/s)(4984KiB/108173msec) slat (usec): min=2988, max=57492, avg=13934.23, stdev=7654.55 clat (msec): min=47, max=712, avg=413.76, stdev=94.61 lat (msec): min=54, max=716, avg=427.70, stdev=95.53 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 271], 10.00th=[ 296], 20.00th=[ 338], | 30.00th=[ 368], 40.00th=[ 388], 50.00th=[ 409], 60.00th=[ 435], | 70.00th=[ 460], 80.00th=[ 493], 90.00th=[ 542], 95.00th=[ 575], | 99.00th=[ 625], 99.50th=[ 651], 99.90th=[ 693], 99.95th=[ 709], | 99.99th=[ 709] bw ( KiB/s): min= 7, max= 120, per=24.83%, avg=45.93, stdev=21.54, samples=214 iops : min= 1, max= 30, avg=11.04, stdev= 5.45, samples=214 write: IOPS=12, BW=48.6KiB/s (49.8kB/s)(5256KiB/108173msec); 0 zone resets slat (usec): min=36, max=20638, avg=257.17, stdev=994.35 clat (msec): min=371, max=1790, avg=908.19, stdev=236.20 lat (msec): min=371, max=1790, avg=908.45, stdev=236.23 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 535], 10.00th=[ 609], 20.00th=[ 701], | 30.00th=[ 776], 40.00th=[ 835], 50.00th=[ 894], 60.00th=[ 953], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1217], 95.00th=[ 1318], | 99.00th=[ 1469], 99.50th=[ 1552], 99.90th=[ 1754], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 135, per=25.10%, avg=48.19, stdev=20.35, samples=213 iops : min= 1, max= 33, avg=11.61, stdev= 5.12, samples=213 lat (msec) : 50=0.04%, 100=0.20%, 250=1.29%, 500=40.16%, 750=20.66% lat (msec) : 1000=20.20%, 2000=17.46% cpu : usr=0.09%, sys=0.60%, ctx=4959, 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=146239: Tue Aug 25 22:37:21 2026 read: IOPS=11, BW=46.9KiB/s (48.1kB/s)(5060KiB/107812msec) slat (usec): min=50, max=51250, avg=14119.60, stdev=8130.78 clat (msec): min=36, max=1336, avg=415.97, stdev=113.82 lat (msec): min=36, max=1342, avg=430.09, stdev=114.37 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 266], 10.00th=[ 296], 20.00th=[ 334], | 30.00th=[ 363], 40.00th=[ 388], 50.00th=[ 414], 60.00th=[ 435], | 70.00th=[ 464], 80.00th=[ 489], 90.00th=[ 550], 95.00th=[ 584], | 99.00th=[ 651], 99.50th=[ 927], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7, max= 135, per=25.18%, avg=46.59, stdev=21.12, samples=213 iops : min= 1, max= 33, avg=11.21, stdev= 5.32, samples=213 write: IOPS=12, BW=48.0KiB/s (49.2kB/s)(5180KiB/107812msec); 0 zone resets slat (usec): min=31, max=14261, avg=227.07, stdev=815.65 clat (msec): min=159, max=1790, avg=910.49, stdev=240.63 lat (msec): min=159, max=1790, avg=910.72, stdev=240.63 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 558], 10.00th=[ 617], 20.00th=[ 709], | 30.00th=[ 776], 40.00th=[ 835], 50.00th=[ 894], 60.00th=[ 953], | 70.00th=[ 1036], 80.00th=[ 1099], 90.00th=[ 1234], 95.00th=[ 1334], | 99.00th=[ 1485], 99.50th=[ 1536], 99.90th=[ 1770], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 111, per=24.95%, avg=47.91, stdev=19.55, samples=212 iops : min= 1, max= 27, avg=11.54, stdev= 4.92, samples=212 lat (msec) : 50=0.20%, 100=0.35%, 250=1.56%, 500=40.23%, 750=20.66% lat (msec) : 1000=19.65%, 2000=17.34% cpu : usr=0.11%, sys=0.55%, ctx=4283, 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=185KiB/s (190kB/s), 45.0KiB/s-46.9KiB/s (47.1kB/s-48.1kB/s), io=19.6MiB (20.5MB), run=107812-108278msec WRITE: bw=193KiB/s (198kB/s), 48.0KiB/s-48.6KiB/s (49.2kB/s-49.8kB/s), io=20.4MiB (21.4MB), run=107812-108278msec 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=146259: Tue Aug 25 22:37:29 2026 read: IOPS=2, BW=81.5MiB/s (85.4MB/s)(40.0MiB/491msec) slat (nsec): min=30149k, max=30149k, avg=30148614.00, stdev= 0.00 clat (nsec): min=433965k, max=433965k, avg=433965123.00, stdev= 0.00 lat (nsec): min=464117k, max=464117k, avg=464117275.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 435], 10.00th=[ 435], 20.00th=[ 435], | 30.00th=[ 435], 40.00th=[ 435], 50.00th=[ 435], 60.00th=[ 435], | 70.00th=[ 435], 80.00th=[ 435], 90.00th=[ 435], 95.00th=[ 435], | 99.00th=[ 435], 99.50th=[ 435], 99.90th=[ 435], 99.95th=[ 435], | 99.99th=[ 435] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.45%, ctx=43, majf=0, minf=10 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=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=81.5MiB/s (85.4MB/s), 81.5MiB/s-81.5MiB/s (85.4MB/s-85.4MB/s), io=40.0MiB (41.9MB), run=491-491msec 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