== sanity test 398c: run fio to test AIO ================= 09:10:12 (1787317812) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.377339 s, 111 MB/s osc.lustre-OST0000-osc-ffff8afe8839a000.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=145756: Fri Aug 21 09:12:43 2026 write: IOPS=17, BW=71.8KiB/s (73.5kB/s)(10.0MiB/142672msec); 0 zone resets slat (usec): min=51, max=24148, avg=312.92, stdev=1009.92 clat (msec): min=227, max=2429, avg=890.38, stdev=301.91 lat (msec): min=228, max=2429, avg=890.69, stdev=301.98 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 550], 10.00th=[ 600], 20.00th=[ 659], | 30.00th=[ 718], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 1070], 90.00th=[ 1250], 95.00th=[ 1536], | 99.00th=[ 1972], 99.50th=[ 2089], 99.90th=[ 2366], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 7, max= 128, per=25.27%, avg=72.53, stdev=32.88, samples=278 iops : min= 1, max= 32, avg=17.67, stdev= 8.28, samples=278 lat (msec) : 250=0.62%, 500=1.88%, 750=32.58%, 1000=39.34%, 2000=24.88% lat (msec) : >=2000=0.70% cpu : usr=0.04%, sys=0.28%, ctx=2548, 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=145757: Fri Aug 21 09:12:43 2026 write: IOPS=17, BW=71.8KiB/s (73.5kB/s)(10.0MiB/142711msec); 0 zone resets slat (usec): min=50, max=17271, avg=290.72, stdev=936.23 clat (msec): min=237, max=2334, avg=890.80, stdev=300.75 lat (msec): min=237, max=2334, avg=891.09, stdev=300.78 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 542], 10.00th=[ 600], 20.00th=[ 667], | 30.00th=[ 718], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 1070], 90.00th=[ 1250], 95.00th=[ 1519], | 99.00th=[ 1972], 99.50th=[ 2123], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 128, per=25.54%, avg=73.31, stdev=33.54, samples=275 iops : min= 1, max= 32, avg=17.87, stdev= 8.44, samples=275 lat (msec) : 250=0.62%, 500=2.38%, 750=32.03%, 1000=39.84%, 2000=24.38% lat (msec) : >=2000=0.74% cpu : usr=0.04%, sys=0.29%, ctx=2563, 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=145758: Fri Aug 21 09:12:43 2026 write: IOPS=17, BW=71.9KiB/s (73.6kB/s)(10.0MiB/142394msec); 0 zone resets slat (usec): min=39, max=16883, avg=287.15, stdev=863.13 clat (msec): min=137, max=2384, avg=889.33, stdev=303.05 lat (msec): min=140, max=2384, avg=889.62, stdev=303.06 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 558], 10.00th=[ 600], 20.00th=[ 667], | 30.00th=[ 726], 40.00th=[ 768], 50.00th=[ 827], 60.00th=[ 885], | 70.00th=[ 961], 80.00th=[ 1062], 90.00th=[ 1267], 95.00th=[ 1485], | 99.00th=[ 2072], 99.50th=[ 2165], 99.90th=[ 2366], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 7, max= 234, per=25.43%, avg=73.00, stdev=34.16, samples=276 iops : min= 1, max= 58, avg=17.78, stdev= 8.59, samples=276 lat (msec) : 250=1.17%, 500=1.09%, 750=33.32%, 1000=38.91%, 2000=24.38% lat (msec) : >=2000=1.13% cpu : usr=0.03%, sys=0.29%, ctx=2342, 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=145759: Fri Aug 21 09:12:43 2026 write: IOPS=17, BW=71.8KiB/s (73.5kB/s)(10.0MiB/142670msec); 0 zone resets slat (usec): min=52, max=22112, avg=280.67, stdev=942.54 clat (msec): min=178, max=2424, avg=890.56, stdev=302.85 lat (msec): min=178, max=2425, avg=890.85, stdev=302.88 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 558], 10.00th=[ 600], 20.00th=[ 667], | 30.00th=[ 718], 40.00th=[ 776], 50.00th=[ 827], 60.00th=[ 894], | 70.00th=[ 969], 80.00th=[ 1062], 90.00th=[ 1250], 95.00th=[ 1519], | 99.00th=[ 2005], 99.50th=[ 2106], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 7, max= 143, per=25.26%, avg=72.51, stdev=31.47, samples=278 iops : min= 1, max= 35, avg=17.67, stdev= 7.92, samples=278 lat (msec) : 250=0.31%, 500=2.15%, 750=33.40%, 1000=38.05%, 2000=25.08% lat (msec) : >=2000=1.02% cpu : usr=0.04%, sys=0.27%, ctx=2247, 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=287KiB/s (294kB/s), 71.8KiB/s-71.9KiB/s (73.5kB/s-73.6kB/s), io=40.0MiB (41.9MB), run=142394-142711msec 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=145789: Fri Aug 21 09:14:28 2026 read: IOPS=12, BW=51.4KiB/s (52.7kB/s)(5048KiB/98154msec) slat (usec): min=2767, max=86159, avg=12774.28, stdev=7268.35 clat (msec): min=34, max=850, avg=376.21, stdev=97.72 lat (msec): min=41, max=861, avg=388.99, stdev=98.98 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 251], 10.00th=[ 271], 20.00th=[ 300], | 30.00th=[ 321], 40.00th=[ 342], 50.00th=[ 363], 60.00th=[ 380], | 70.00th=[ 409], 80.00th=[ 439], 90.00th=[ 502], 95.00th=[ 558], | 99.00th=[ 693], 99.50th=[ 776], 99.90th=[ 844], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 111, per=25.07%, avg=51.13, stdev=22.02, samples=194 iops : min= 1, max= 27, avg=12.35, stdev= 5.54, samples=194 write: IOPS=13, BW=52.9KiB/s (54.2kB/s)(5192KiB/98154msec); 0 zone resets slat (usec): min=55, max=22389, avg=304.50, stdev=1096.66 clat (msec): min=247, max=1668, avg=828.98, stdev=214.21 lat (msec): min=247, max=1668, avg=829.28, stdev=214.24 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 518], 10.00th=[ 584], 20.00th=[ 659], | 30.00th=[ 718], 40.00th=[ 760], 50.00th=[ 810], 60.00th=[ 860], | 70.00th=[ 911], 80.00th=[ 995], 90.00th=[ 1099], 95.00th=[ 1183], | 99.00th=[ 1536], 99.50th=[ 1552], 99.90th=[ 1653], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 7, max= 118, per=24.61%, avg=52.16, stdev=21.17, samples=195 iops : min= 1, max= 29, avg=12.60, stdev= 5.30, samples=195 lat (msec) : 50=0.12%, 100=0.08%, 250=2.23%, 500=44.10%, 750=21.17% lat (msec) : 1000=22.89%, 2000=9.41% cpu : usr=0.09%, sys=0.67%, ctx=5004, 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=145790: Fri Aug 21 09:14:28 2026 read: IOPS=12, BW=50.7KiB/s (51.9kB/s)(4976KiB/98212msec) slat (usec): min=2341, max=45103, avg=12800.46, stdev=7080.63 clat (msec): min=19, max=861, avg=374.64, stdev=93.07 lat (msec): min=26, max=866, avg=387.44, stdev=94.22 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 253], 10.00th=[ 279], 20.00th=[ 305], | 30.00th=[ 326], 40.00th=[ 342], 50.00th=[ 359], 60.00th=[ 380], | 70.00th=[ 409], 80.00th=[ 439], 90.00th=[ 489], 95.00th=[ 550], | 99.00th=[ 642], 99.50th=[ 735], 99.90th=[ 827], 99.95th=[ 860], | 99.99th=[ 860] bw ( KiB/s): min= 7, max= 127, per=24.55%, avg=50.09, stdev=22.46, samples=195 iops : min= 1, max= 31, avg=12.08, stdev= 5.66, samples=195 write: IOPS=13, BW=53.6KiB/s (54.9kB/s)(5264KiB/98212msec); 0 zone resets slat (usec): min=56, max=18308, avg=267.99, stdev=798.60 clat (msec): min=242, max=1689, avg=825.62, stdev=217.40 lat (msec): min=242, max=1689, avg=825.89, stdev=217.44 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 506], 10.00th=[ 567], 20.00th=[ 651], | 30.00th=[ 718], 40.00th=[ 768], 50.00th=[ 818], 60.00th=[ 860], | 70.00th=[ 927], 80.00th=[ 978], 90.00th=[ 1083], 95.00th=[ 1167], | 99.00th=[ 1536], 99.50th=[ 1586], 99.90th=[ 1636], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 7, max= 104, per=24.99%, avg=52.97, stdev=19.95, samples=195 iops : min= 1, max= 26, avg=12.80, stdev= 5.04, samples=195 lat (msec) : 20=0.08%, 50=0.08%, 100=0.04%, 250=2.11%, 500=44.30% lat (msec) : 750=19.96%, 1000=24.53%, 2000=8.91% cpu : usr=0.08%, sys=0.66%, ctx=4732, 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=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=145791: Fri Aug 21 09:14:28 2026 read: IOPS=12, BW=50.8KiB/s (51.0kB/s)(4984KiB/98153msec) slat (usec): min=89, max=50693, avg=12787.36, stdev=7207.88 clat (msec): min=16, max=825, avg=371.68, stdev=95.05 lat (msec): min=28, max=859, avg=384.47, stdev=96.17 clat percentiles (msec): | 1.00th=[ 125], 5.00th=[ 249], 10.00th=[ 271], 20.00th=[ 300], | 30.00th=[ 321], 40.00th=[ 342], 50.00th=[ 363], 60.00th=[ 380], | 70.00th=[ 405], 80.00th=[ 435], 90.00th=[ 485], 95.00th=[ 550], | 99.00th=[ 642], 99.50th=[ 684], 99.90th=[ 793], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 118, per=24.80%, avg=50.58, stdev=23.73, samples=194 iops : min= 1, max= 29, avg=12.21, stdev= 5.97, samples=194 write: IOPS=13, BW=53.5KiB/s (54.8kB/s)(5256KiB/98153msec); 0 zone resets slat (usec): min=58, max=20627, avg=329.78, stdev=1202.56 clat (msec): min=89, max=1642, avg=829.53, stdev=219.50 lat (msec): min=90, max=1642, avg=829.86, stdev=219.53 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 506], 10.00th=[ 575], 20.00th=[ 659], | 30.00th=[ 718], 40.00th=[ 760], 50.00th=[ 818], 60.00th=[ 869], | 70.00th=[ 927], 80.00th=[ 986], 90.00th=[ 1099], 95.00th=[ 1183], | 99.00th=[ 1485], 99.50th=[ 1569], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 8, max= 112, per=24.84%, avg=52.67, stdev=20.55, samples=195 iops : min= 2, max= 28, avg=12.72, stdev= 5.13, samples=195 lat (msec) : 20=0.04%, 50=0.20%, 100=0.23%, 250=2.85%, 500=43.63% lat (msec) : 750=20.20%, 1000=23.75%, 2000=9.10% cpu : usr=0.07%, sys=0.66%, ctx=4864, 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=145792: Fri Aug 21 09:14:28 2026 read: IOPS=12, BW=51.6KiB/s (52.8kB/s)(5060KiB/98153msec) slat (usec): min=2637, max=43553, avg=12769.85, stdev=6895.22 clat (msec): min=19, max=869, avg=371.30, stdev=96.44 lat (msec): min=30, max=883, avg=384.07, stdev=97.47 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 247], 10.00th=[ 271], 20.00th=[ 300], | 30.00th=[ 317], 40.00th=[ 338], 50.00th=[ 359], 60.00th=[ 380], | 70.00th=[ 409], 80.00th=[ 439], 90.00th=[ 485], 95.00th=[ 550], | 99.00th=[ 693], 99.50th=[ 751], 99.90th=[ 852], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 134, per=25.42%, avg=51.85, stdev=23.27, samples=192 iops : min= 1, max= 33, avg=12.53, stdev= 5.89, samples=192 write: IOPS=13, BW=52.8KiB/s (54.0kB/s)(5180KiB/98153msec); 0 zone resets slat (usec): min=57, max=13961, avg=274.77, stdev=730.45 clat (msec): min=209, max=1639, avg=834.97, stdev=213.69 lat (msec): min=210, max=1639, avg=835.25, stdev=213.67 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 518], 10.00th=[ 592], 20.00th=[ 667], | 30.00th=[ 726], 40.00th=[ 776], 50.00th=[ 818], 60.00th=[ 869], | 70.00th=[ 919], 80.00th=[ 986], 90.00th=[ 1083], 95.00th=[ 1200], | 99.00th=[ 1536], 99.50th=[ 1569], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 8, max= 104, per=24.53%, avg=51.99, stdev=18.89, samples=195 iops : min= 2, max= 26, avg=12.56, stdev= 4.74, samples=195 lat (msec) : 20=0.04%, 50=0.08%, 100=0.08%, 250=2.70%, 500=44.38% lat (msec) : 750=19.61%, 1000=23.91%, 2000=9.22% cpu : usr=0.07%, sys=0.62%, ctx=5127, 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=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=204KiB/s (209kB/s), 50.7KiB/s-51.6KiB/s (51.9kB/s-52.8kB/s), io=19.6MiB (20.5MB), run=98153-98212msec WRITE: bw=213KiB/s (218kB/s), 52.8KiB/s-53.6KiB/s (54.0kB/s-54.9kB/s), io=20.4MiB (21.4MB), run=98153-98212msec 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=145810: Fri Aug 21 09:14:39 2026 read: IOPS=2, BW=83.9MiB/s (87.9MB/s)(40.0MiB/477msec) slat (nsec): min=28456k, max=28456k, avg=28455891.00, stdev= 0.00 clat (nsec): min=426443k, max=426443k, avg=426443420.00, stdev= 0.00 lat (nsec): min=454904k, max=454904k, avg=454903784.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=1.89%, ctx=8, 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=83.9MiB/s (87.9MB/s), 83.9MiB/s-83.9MiB/s (87.9MB/s-87.9MB/s), io=40.0MiB (41.9MB), run=477-477msec 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