== sanity test 398c: run fio to test AIO ================= 11:09:27 (1787584167) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.694464 s, 60.4 MB/s osc.lustre-OST0000-osc-ffff8a54c60dc800.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=146311: Mon Aug 24 11:12:41 2026 write: IOPS=14, BW=56.2KiB/s (57.5kB/s)(10.0MiB/182231msec); 0 zone resets slat (usec): min=21, max=16311, avg=158.59, stdev=535.01 clat (msec): min=66, max=3047, avg=1137.65, stdev=454.77 lat (msec): min=66, max=3047, avg=1137.81, stdev=454.79 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 558], 10.00th=[ 651], 20.00th=[ 760], | 30.00th=[ 852], 40.00th=[ 936], 50.00th=[ 1045], 60.00th=[ 1150], | 70.00th=[ 1318], 80.00th=[ 1502], 90.00th=[ 1770], 95.00th=[ 1955], | 99.00th=[ 2567], 99.50th=[ 2735], 99.90th=[ 3004], 99.95th=[ 3037], | 99.99th=[ 3037] bw ( KiB/s): min= 7, max= 216, per=25.93%, avg=58.08, stdev=32.49, samples=346 iops : min= 1, max= 54, avg=14.05, stdev= 8.16, samples=346 lat (msec) : 100=0.04%, 250=0.12%, 500=2.93%, 750=16.29%, 1000=26.68% lat (msec) : 2000=49.61%, >=2000=4.34% cpu : usr=0.03%, sys=0.17%, ctx=1746, 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=146312: Mon Aug 24 11:12:41 2026 write: IOPS=14, BW=56.2KiB/s (57.6kB/s)(10.0MiB/182106msec); 0 zone resets slat (usec): min=20, max=22884, avg=191.39, stdev=959.15 clat (msec): min=163, max=3011, avg=1137.64, stdev=462.31 lat (msec): min=163, max=3011, avg=1137.84, stdev=462.34 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 558], 10.00th=[ 651], 20.00th=[ 760], | 30.00th=[ 852], 40.00th=[ 936], 50.00th=[ 1020], 60.00th=[ 1167], | 70.00th=[ 1318], 80.00th=[ 1536], 90.00th=[ 1737], 95.00th=[ 2022], | 99.00th=[ 2534], 99.50th=[ 2702], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 3004] bw ( KiB/s): min= 7, max= 143, per=26.01%, avg=58.26, stdev=31.89, samples=345 iops : min= 1, max= 35, avg=14.10, stdev= 8.03, samples=345 lat (msec) : 250=0.62%, 500=1.84%, 750=16.68%, 1000=28.12%, 2000=47.58% lat (msec) : >=2000=5.16% cpu : usr=0.04%, sys=0.17%, ctx=1740, 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=146313: Mon Aug 24 11:12:41 2026 write: IOPS=14, BW=56.2KiB/s (57.6kB/s)(10.0MiB/182103msec); 0 zone resets slat (usec): min=20, max=22657, avg=179.95, stdev=802.70 clat (msec): min=136, max=2998, avg=1136.83, stdev=457.78 lat (msec): min=136, max=2999, avg=1137.01, stdev=457.79 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 558], 10.00th=[ 642], 20.00th=[ 751], | 30.00th=[ 852], 40.00th=[ 936], 50.00th=[ 1028], 60.00th=[ 1183], | 70.00th=[ 1318], 80.00th=[ 1519], 90.00th=[ 1737], 95.00th=[ 1938], | 99.00th=[ 2534], 99.50th=[ 2735], 99.90th=[ 2937], 99.95th=[ 2937], | 99.99th=[ 3004] bw ( KiB/s): min= 7, max= 143, per=26.08%, avg=58.42, stdev=33.04, samples=344 iops : min= 1, max= 35, avg=14.14, stdev= 8.26, samples=344 lat (msec) : 250=0.62%, 500=1.80%, 750=17.34%, 1000=26.91%, 2000=49.06% lat (msec) : >=2000=4.26% cpu : usr=0.03%, sys=0.19%, ctx=1713, 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=146314: Mon Aug 24 11:12:41 2026 write: IOPS=14, BW=56.2KiB/s (57.5kB/s)(10.0MiB/182231msec); 0 zone resets slat (usec): min=21, max=23125, avg=208.56, stdev=976.95 clat (msec): min=213, max=3099, avg=1137.53, stdev=456.97 lat (msec): min=213, max=3099, avg=1137.75, stdev=457.03 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 558], 10.00th=[ 651], 20.00th=[ 776], | 30.00th=[ 852], 40.00th=[ 927], 50.00th=[ 1036], 60.00th=[ 1167], | 70.00th=[ 1301], 80.00th=[ 1502], 90.00th=[ 1754], 95.00th=[ 1989], | 99.00th=[ 2534], 99.50th=[ 2735], 99.90th=[ 2937], 99.95th=[ 3104], | 99.99th=[ 3104] bw ( KiB/s): min= 7, max= 159, per=26.27%, avg=58.84, stdev=32.92, samples=341 iops : min= 1, max= 39, avg=14.25, stdev= 8.26, samples=341 lat (msec) : 250=0.04%, 500=3.32%, 750=14.65%, 1000=29.26%, 2000=47.93% lat (msec) : >=2000=4.80% cpu : usr=0.05%, sys=0.19%, ctx=1842, 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=225KiB/s (230kB/s), 56.2KiB/s-56.2KiB/s (57.5kB/s-57.6kB/s), io=40.0MiB (41.9MB), run=182103-182231msec 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=146349: Mon Aug 24 11:14:34 2026 read: IOPS=12, BW=48.7KiB/s (49.9kB/s)(5048KiB/103637msec) slat (usec): min=3000, max=50460, avg=14090.18, stdev=7949.39 clat (msec): min=21, max=812, avg=401.02, stdev=103.28 lat (msec): min=31, max=835, avg=415.12, stdev=103.79 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 257], 10.00th=[ 288], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 388], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 477], 90.00th=[ 535], 95.00th=[ 584], | 99.00th=[ 726], 99.50th=[ 776], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 111, per=25.04%, avg=48.33, stdev=21.86, samples=205 iops : min= 1, max= 27, avg=11.62, stdev= 5.45, samples=205 write: IOPS=12, BW=50.1KiB/s (51.3kB/s)(5192KiB/103637msec); 0 zone resets slat (usec): min=33, max=24098, avg=259.66, stdev=990.65 clat (msec): min=282, max=1855, avg=870.14, stdev=248.28 lat (msec): min=282, max=1855, avg=870.40, stdev=248.27 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 481], 10.00th=[ 550], 20.00th=[ 651], | 30.00th=[ 735], 40.00th=[ 802], 50.00th=[ 860], 60.00th=[ 919], | 70.00th=[ 995], 80.00th=[ 1070], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1586], 99.50th=[ 1670], 99.90th=[ 1804], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 104, per=24.70%, avg=49.65, stdev=19.90, samples=205 iops : min= 1, max= 26, avg=11.95, stdev= 5.00, samples=205 lat (msec) : 50=0.12%, 100=0.12%, 250=1.80%, 500=43.20%, 750=20.27% lat (msec) : 1000=20.00%, 2000=14.49% cpu : usr=0.10%, sys=0.68%, ctx=5116, 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=146350: Mon Aug 24 11:14:34 2026 read: IOPS=12, BW=48.0KiB/s (49.2kB/s)(4976KiB/103576msec) slat (usec): min=47, max=61776, avg=13793.44, stdev=7551.32 clat (msec): min=23, max=931, avg=395.34, stdev=107.45 lat (msec): min=23, max=938, avg=409.14, stdev=108.17 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 255], 10.00th=[ 284], 20.00th=[ 317], | 30.00th=[ 338], 40.00th=[ 359], 50.00th=[ 380], 60.00th=[ 405], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 527], 95.00th=[ 575], | 99.00th=[ 726], 99.50th=[ 776], 99.90th=[ 927], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 112, per=25.02%, avg=48.29, stdev=22.12, samples=202 iops : min= 1, max= 28, avg=11.60, stdev= 5.55, samples=202 write: IOPS=12, BW=50.8KiB/s (52.0kB/s)(5264KiB/103576msec); 0 zone resets slat (usec): min=28, max=16388, avg=252.40, stdev=889.55 clat (msec): min=111, max=1822, avg=871.21, stdev=258.78 lat (msec): min=111, max=1822, avg=871.46, stdev=258.80 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 477], 10.00th=[ 535], 20.00th=[ 659], | 30.00th=[ 735], 40.00th=[ 802], 50.00th=[ 869], 60.00th=[ 919], | 70.00th=[ 986], 80.00th=[ 1070], 90.00th=[ 1200], 95.00th=[ 1318], | 99.00th=[ 1603], 99.50th=[ 1670], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 119, per=25.04%, avg=50.33, stdev=21.70, samples=205 iops : min= 1, max= 29, avg=12.12, stdev= 5.43, samples=205 lat (msec) : 50=0.12%, 100=0.27%, 250=1.91%, 500=43.28%, 750=19.34% lat (msec) : 1000=20.78%, 2000=14.30% cpu : usr=0.11%, sys=0.63%, ctx=4780, 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=146351: Mon Aug 24 11:14:34 2026 read: IOPS=12, BW=48.1KiB/s (49.2kB/s)(4984KiB/103635msec) slat (usec): min=2414, max=54458, avg=13816.72, stdev=7521.07 clat (msec): min=22, max=842, avg=395.45, stdev=101.68 lat (msec): min=29, max=855, avg=409.27, stdev=102.61 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 255], 10.00th=[ 284], 20.00th=[ 313], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 388], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 472], 90.00th=[ 523], 95.00th=[ 558], | 99.00th=[ 701], 99.50th=[ 751], 99.90th=[ 835], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 120, per=24.80%, avg=47.86, stdev=22.37, samples=205 iops : min= 1, max= 30, avg=11.51, stdev= 5.61, samples=205 write: IOPS=12, BW=50.7KiB/s (51.9kB/s)(5256KiB/103635msec); 0 zone resets slat (usec): min=34, max=18010, avg=238.38, stdev=839.09 clat (msec): min=295, max=1922, avg=870.95, stdev=256.75 lat (msec): min=295, max=1923, avg=871.19, stdev=256.74 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 485], 10.00th=[ 542], 20.00th=[ 642], | 30.00th=[ 726], 40.00th=[ 793], 50.00th=[ 860], 60.00th=[ 919], | 70.00th=[ 995], 80.00th=[ 1083], 90.00th=[ 1200], 95.00th=[ 1301], | 99.00th=[ 1620], 99.50th=[ 1670], 99.90th=[ 1838], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 7, max= 119, per=24.80%, avg=49.85, stdev=22.79, samples=206 iops : min= 1, max= 29, avg=12.00, stdev= 5.67, samples=206 lat (msec) : 50=0.12%, 100=0.23%, 250=1.76%, 500=43.12%, 750=20.39% lat (msec) : 1000=19.34%, 2000=15.04% cpu : usr=0.10%, sys=0.60%, ctx=4639, 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=146352: Mon Aug 24 11:14:34 2026 read: IOPS=12, BW=48.9KiB/s (50.0kB/s)(5060KiB/103533msec) slat (usec): min=2686, max=54633, avg=13809.04, stdev=7535.79 clat (msec): min=29, max=961, avg=399.00, stdev=106.82 lat (msec): min=40, max=965, avg=412.82, stdev=107.91 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 255], 10.00th=[ 284], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 388], 60.00th=[ 409], | 70.00th=[ 439], 80.00th=[ 472], 90.00th=[ 527], 95.00th=[ 575], | 99.00th=[ 726], 99.50th=[ 818], 99.90th=[ 894], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 111, per=25.12%, avg=48.47, stdev=21.98, samples=205 iops : min= 1, max= 27, avg=11.66, stdev= 5.50, samples=205 write: IOPS=12, BW=50.0KiB/s (51.2kB/s)(5180KiB/103533msec); 0 zone resets slat (usec): min=26, max=19071, avg=255.15, stdev=891.73 clat (msec): min=266, max=1848, avg=873.28, stdev=260.72 lat (msec): min=266, max=1848, avg=873.54, stdev=260.71 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 472], 10.00th=[ 542], 20.00th=[ 651], | 30.00th=[ 726], 40.00th=[ 802], 50.00th=[ 869], 60.00th=[ 927], | 70.00th=[ 1003], 80.00th=[ 1083], 90.00th=[ 1200], 95.00th=[ 1318], | 99.00th=[ 1586], 99.50th=[ 1670], 99.90th=[ 1821], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 120, per=24.61%, avg=49.46, stdev=21.66, samples=205 iops : min= 1, max= 30, avg=11.90, stdev= 5.43, samples=205 lat (msec) : 50=0.16%, 100=0.12%, 250=1.80%, 500=43.32%, 750=20.62% lat (msec) : 1000=18.79%, 2000=15.20% cpu : usr=0.12%, sys=0.69%, ctx=4783, 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=194KiB/s (198kB/s), 48.0KiB/s-48.9KiB/s (49.2kB/s-50.0kB/s), io=19.6MiB (20.5MB), run=103533-103637msec WRITE: bw=202KiB/s (206kB/s), 50.0KiB/s-50.8KiB/s (51.2kB/s-52.0kB/s), io=20.4MiB (21.4MB), run=103533-103637msec 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=146371: Mon Aug 24 11:14:45 2026 read: IOPS=2, BW=88.7MiB/s (93.0MB/s)(40.0MiB/451msec) slat (nsec): min=45506k, max=45506k, avg=45505564.00, stdev= 0.00 clat (nsec): min=387278k, max=387278k, avg=387277584.00, stdev= 0.00 lat (nsec): min=432787k, max=432787k, avg=432787100.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.22%, ctx=5, 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=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=88.7MiB/s (93.0MB/s), 88.7MiB/s-88.7MiB/s (93.0MB/s-93.0MB/s), io=40.0MiB (41.9MB), run=451-451msec 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