== sanity test 398c: run fio to test AIO ================= 03:30:23 (1788334223) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.51089 s, 82.1 MB/s osc.lustre-OST0000-osc-ffff93c183958000.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=145558: Wed Sep 2 03:33:20 2026 write: IOPS=15, BW=61.3KiB/s (62.8kB/s)(10.0MiB/166944msec); 0 zone resets slat (usec): min=28, max=25520, avg=282.86, stdev=1003.07 clat (msec): min=187, max=3722, avg=1042.08, stdev=366.41 lat (msec): min=187, max=3722, avg=1042.37, stdev=366.44 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 609], 10.00th=[ 701], 20.00th=[ 776], | 30.00th=[ 852], 40.00th=[ 919], 50.00th=[ 995], 60.00th=[ 1070], | 70.00th=[ 1150], 80.00th=[ 1234], 90.00th=[ 1401], 95.00th=[ 1620], | 99.00th=[ 2567], 99.50th=[ 3004], 99.90th=[ 3708], 99.95th=[ 3708], | 99.99th=[ 3708] bw ( KiB/s): min= 7, max= 166, per=25.20%, avg=61.48, stdev=26.20, samples=327 iops : min= 1, max= 41, avg=14.87, stdev= 6.58, samples=327 lat (msec) : 250=0.74%, 500=1.68%, 750=13.95%, 1000=34.22%, 2000=47.42% lat (msec) : >=2000=1.99% cpu : usr=0.05%, sys=0.27%, ctx=1977, 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=145559: Wed Sep 2 03:33:20 2026 write: IOPS=15, BW=61.2KiB/s (62.6kB/s)(10.0MiB/167394msec); 0 zone resets slat (usec): min=29, max=19182, avg=244.03, stdev=908.18 clat (msec): min=219, max=3063, avg=1045.15, stdev=348.59 lat (msec): min=219, max=3063, avg=1045.40, stdev=348.62 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 617], 10.00th=[ 701], 20.00th=[ 785], | 30.00th=[ 860], 40.00th=[ 927], 50.00th=[ 995], 60.00th=[ 1083], | 70.00th=[ 1150], 80.00th=[ 1250], 90.00th=[ 1435], 95.00th=[ 1603], | 99.00th=[ 2433], 99.50th=[ 2769], 99.90th=[ 3037], 99.95th=[ 3037], | 99.99th=[ 3071] bw ( KiB/s): min= 7, max= 128, per=26.01%, avg=63.47, stdev=30.53, samples=317 iops : min= 1, max= 32, avg=15.36, stdev= 7.67, samples=317 lat (msec) : 250=0.62%, 500=1.84%, 750=13.12%, 1000=34.69%, 2000=47.50% lat (msec) : >=2000=2.23% cpu : usr=0.05%, sys=0.23%, ctx=1612, 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=145560: Wed Sep 2 03:33:20 2026 write: IOPS=15, BW=61.3KiB/s (62.7kB/s)(10.0MiB/167144msec); 0 zone resets slat (usec): min=29, max=38584, avg=296.46, stdev=1309.85 clat (msec): min=160, max=3615, avg=1043.18, stdev=358.63 lat (msec): min=161, max=3615, avg=1043.48, stdev=358.64 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 592], 10.00th=[ 701], 20.00th=[ 776], | 30.00th=[ 869], 40.00th=[ 936], 50.00th=[ 1003], 60.00th=[ 1070], | 70.00th=[ 1150], 80.00th=[ 1250], 90.00th=[ 1418], 95.00th=[ 1620], | 99.00th=[ 2500], 99.50th=[ 2836], 99.90th=[ 3473], 99.95th=[ 3608], | 99.99th=[ 3608] bw ( KiB/s): min= 7, max= 159, per=25.28%, avg=61.69, stdev=29.29, samples=326 iops : min= 1, max= 39, avg=14.92, stdev= 7.34, samples=326 lat (msec) : 250=0.62%, 500=1.29%, 750=14.69%, 1000=32.73%, 2000=48.48% lat (msec) : >=2000=2.19% cpu : usr=0.05%, sys=0.23%, ctx=1830, 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=145561: Wed Sep 2 03:33:20 2026 write: IOPS=15, BW=61.6KiB/s (63.0kB/s)(10.0MiB/166338msec); 0 zone resets slat (usec): min=29, max=19549, avg=319.69, stdev=1161.08 clat (msec): min=84, max=3569, avg=1038.30, stdev=369.71 lat (msec): min=84, max=3569, avg=1038.62, stdev=369.71 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 600], 10.00th=[ 701], 20.00th=[ 776], | 30.00th=[ 852], 40.00th=[ 927], 50.00th=[ 995], 60.00th=[ 1062], | 70.00th=[ 1150], 80.00th=[ 1234], 90.00th=[ 1418], 95.00th=[ 1586], | 99.00th=[ 2668], 99.50th=[ 2836], 99.90th=[ 3574], 99.95th=[ 3574], | 99.99th=[ 3574] bw ( KiB/s): min= 7, max= 208, per=25.50%, avg=62.23, stdev=29.16, samples=323 iops : min= 1, max= 52, avg=15.05, stdev= 7.34, samples=323 lat (msec) : 100=0.04%, 250=1.02%, 500=1.68%, 750=13.52%, 1000=34.06% lat (msec) : 2000=47.42%, >=2000=2.27% cpu : usr=0.05%, sys=0.26%, ctx=1889, 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=245KiB/s (251kB/s), 61.2KiB/s-61.6KiB/s (62.6kB/s-63.0kB/s), io=40.0MiB (41.9MB), run=166338-167394msec 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=145596: Wed Sep 2 03:35:22 2026 read: IOPS=11, BW=44.3KiB/s (45.4kB/s)(5048KiB/113849msec) slat (msec): min=2, max=294, avg=14.97, stdev=11.03 clat (msec): min=22, max=1039, avg=438.79, stdev=121.06 lat (msec): min=27, max=1067, avg=453.78, stdev=122.11 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 279], 10.00th=[ 309], 20.00th=[ 342], | 30.00th=[ 376], 40.00th=[ 397], 50.00th=[ 426], 60.00th=[ 456], | 70.00th=[ 485], 80.00th=[ 527], 90.00th=[ 592], 95.00th=[ 659], | 99.00th=[ 793], 99.50th=[ 869], 99.90th=[ 1028], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 7, max= 104, per=24.99%, avg=43.98, stdev=20.00, samples=225 iops : min= 1, max= 26, avg=10.54, stdev= 5.02, samples=225 write: IOPS=11, BW=45.6KiB/s (46.7kB/s)(5192KiB/113849msec); 0 zone resets slat (usec): min=31, max=22709, avg=376.32, stdev=1284.80 clat (msec): min=407, max=2368, avg=959.34, stdev=298.05 lat (msec): min=407, max=2368, avg=959.71, stdev=298.06 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 567], 10.00th=[ 634], 20.00th=[ 735], | 30.00th=[ 802], 40.00th=[ 852], 50.00th=[ 919], 60.00th=[ 986], | 70.00th=[ 1045], 80.00th=[ 1150], 90.00th=[ 1318], 95.00th=[ 1469], | 99.00th=[ 2165], 99.50th=[ 2198], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 7, max= 95, per=24.80%, avg=45.38, stdev=19.64, samples=224 iops : min= 1, max= 23, avg=10.88, stdev= 4.92, samples=224 lat (msec) : 50=0.08%, 100=0.23%, 250=1.05%, 500=36.33%, 750=22.34% lat (msec) : 1000=21.09%, 2000=17.97%, >=2000=0.90% cpu : usr=0.12%, sys=0.67%, ctx=5140, 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=145597: Wed Sep 2 03:35:22 2026 read: IOPS=10, BW=43.7KiB/s (44.8kB/s)(4976KiB/113850msec) slat (usec): min=2996, max=57345, avg=14651.21, stdev=7877.11 clat (msec): min=19, max=1102, avg=442.58, stdev=125.87 lat (msec): min=28, max=1139, avg=457.24, stdev=127.66 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 275], 10.00th=[ 309], 20.00th=[ 342], | 30.00th=[ 376], 40.00th=[ 405], 50.00th=[ 430], 60.00th=[ 460], | 70.00th=[ 485], 80.00th=[ 531], 90.00th=[ 592], 95.00th=[ 667], | 99.00th=[ 818], 99.50th=[ 969], 99.90th=[ 1070], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 136, per=24.95%, avg=43.91, stdev=20.25, samples=222 iops : min= 1, max= 34, avg=10.52, stdev= 5.08, samples=222 write: IOPS=11, BW=46.2KiB/s (47.3kB/s)(5264KiB/113850msec); 0 zone resets slat (usec): min=31, max=22590, avg=334.42, stdev=1087.64 clat (msec): min=183, max=2450, avg=949.81, stdev=292.32 lat (msec): min=183, max=2450, avg=950.14, stdev=292.32 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 567], 10.00th=[ 642], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 919], 60.00th=[ 978], | 70.00th=[ 1045], 80.00th=[ 1133], 90.00th=[ 1284], 95.00th=[ 1469], | 99.00th=[ 2056], 99.50th=[ 2165], 99.90th=[ 2400], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 7, max= 103, per=25.15%, avg=46.03, stdev=19.24, samples=224 iops : min= 1, max= 25, avg=11.05, stdev= 4.81, samples=224 lat (msec) : 20=0.04%, 50=0.16%, 100=0.16%, 250=1.21%, 500=35.31% lat (msec) : 750=22.50%, 1000=21.56%, 2000=18.40%, >=2000=0.66% cpu : usr=0.11%, sys=0.69%, ctx=4845, 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=145598: Wed Sep 2 03:35:22 2026 read: IOPS=10, BW=43.8KiB/s (44.8kB/s)(4984KiB/113845msec) slat (usec): min=36, max=56710, avg=14747.61, stdev=7921.82 clat (msec): min=22, max=1098, avg=436.05, stdev=126.75 lat (msec): min=31, max=1142, avg=450.80, stdev=128.40 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 266], 10.00th=[ 305], 20.00th=[ 342], | 30.00th=[ 372], 40.00th=[ 397], 50.00th=[ 422], 60.00th=[ 447], | 70.00th=[ 481], 80.00th=[ 523], 90.00th=[ 584], 95.00th=[ 659], | 99.00th=[ 835], 99.50th=[ 986], 99.90th=[ 1028], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 111, per=24.85%, avg=43.73, stdev=22.47, samples=224 iops : min= 1, max= 27, avg=10.48, stdev= 5.64, samples=224 write: IOPS=11, BW=46.2KiB/s (47.3kB/s)(5256KiB/113845msec); 0 zone resets slat (usec): min=29, max=13245, avg=308.72, stdev=891.28 clat (msec): min=155, max=2392, avg=957.84, stdev=307.18 lat (msec): min=155, max=2392, avg=958.16, stdev=307.19 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 558], 10.00th=[ 625], 20.00th=[ 718], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 919], 60.00th=[ 986], | 70.00th=[ 1062], 80.00th=[ 1167], 90.00th=[ 1318], 95.00th=[ 1485], | 99.00th=[ 2165], 99.50th=[ 2198], 99.90th=[ 2366], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 7, max= 95, per=25.03%, avg=45.81, stdev=19.15, samples=224 iops : min= 1, max= 23, avg=11.00, stdev= 4.79, samples=224 lat (msec) : 50=0.12%, 100=0.27%, 250=1.37%, 500=35.59%, 750=22.58% lat (msec) : 1000=20.55%, 2000=18.71%, >=2000=0.82% cpu : usr=0.10%, sys=0.59%, ctx=4401, 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=145599: Wed Sep 2 03:35:22 2026 read: IOPS=11, BW=44.4KiB/s (45.4kB/s)(5060KiB/114007msec) slat (msec): min=2, max=278, avg=14.77, stdev=13.04 clat (msec): min=28, max=964, avg=438.07, stdev=121.53 lat (msec): min=44, max=997, avg=452.85, stdev=123.01 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 284], 10.00th=[ 309], 20.00th=[ 342], | 30.00th=[ 368], 40.00th=[ 397], 50.00th=[ 422], 60.00th=[ 456], | 70.00th=[ 485], 80.00th=[ 527], 90.00th=[ 592], 95.00th=[ 667], | 99.00th=[ 810], 99.50th=[ 860], 99.90th=[ 927], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 112, per=25.42%, avg=44.73, stdev=21.31, samples=222 iops : min= 1, max= 28, avg=10.73, stdev= 5.36, samples=222 write: IOPS=11, BW=45.4KiB/s (46.5kB/s)(5180KiB/114007msec); 0 zone resets slat (usec): min=32, max=27495, avg=340.00, stdev=1235.95 clat (msec): min=118, max=2452, avg=963.54, stdev=298.23 lat (msec): min=118, max=2452, avg=963.88, stdev=298.20 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 567], 10.00th=[ 625], 20.00th=[ 735], | 30.00th=[ 802], 40.00th=[ 869], 50.00th=[ 927], 60.00th=[ 995], | 70.00th=[ 1070], 80.00th=[ 1150], 90.00th=[ 1318], 95.00th=[ 1502], | 99.00th=[ 2140], 99.50th=[ 2198], 99.90th=[ 2333], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 7, max= 103, per=24.49%, avg=44.82, stdev=20.25, samples=226 iops : min= 1, max= 25, avg=10.75, stdev= 5.05, samples=226 lat (msec) : 50=0.23%, 100=0.16%, 250=0.70%, 500=36.56%, 750=21.88% lat (msec) : 1000=21.02%, 2000=18.75%, >=2000=0.70% cpu : usr=0.12%, sys=0.66%, ctx=5197, 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=176KiB/s (180kB/s), 43.7KiB/s-44.4KiB/s (44.8kB/s-45.4kB/s), io=19.6MiB (20.5MB), run=113845-114007msec WRITE: bw=183KiB/s (188kB/s), 45.4KiB/s-46.2KiB/s (46.5kB/s-47.3kB/s), io=20.4MiB (21.4MB), run=113845-114007msec 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=145619: Wed Sep 2 03:35:30 2026 read: IOPS=1, BW=76.2MiB/s (79.9MB/s)(40.0MiB/525msec) slat (nsec): min=31059k, max=31059k, avg=31058730.00, stdev= 0.00 clat (nsec): min=465060k, max=465060k, avg=465059799.00, stdev= 0.00 lat (nsec): min=496122k, max=496122k, avg=496122330.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 464], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.29%, ctx=43, 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=76.2MiB/s (79.9MB/s), 76.2MiB/s-76.2MiB/s (79.9MB/s-79.9MB/s), io=40.0MiB (41.9MB), run=525-525msec 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