== sanity test 398c: run fio to test AIO ================= 06:44:21 (1778928261) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.171308 s, 245 MB/s osc.lustre-OST0000-osc-ffff8f5218817000.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=182218: Sat May 16 06:44:34 2026 write: IOPS=260, BW=1044KiB/s (1069kB/s)(10.0MiB/9811msec); 0 zone resets slat (usec): min=43, max=31935, avg=231.11, stdev=651.58 clat (msec): min=14, max=122, avg=60.62, stdev=14.44 lat (msec): min=14, max=123, avg=60.85, stdev=14.42 clat percentiles (msec): | 1.00th=[ 39], 5.00th=[ 44], 10.00th=[ 46], 20.00th=[ 49], | 30.00th=[ 52], 40.00th=[ 55], 50.00th=[ 59], 60.00th=[ 62], | 70.00th=[ 66], 80.00th=[ 71], 90.00th=[ 81], 95.00th=[ 89], | 99.00th=[ 109], 99.50th=[ 113], 99.90th=[ 123], 99.95th=[ 123], | 99.99th=[ 124] bw ( KiB/s): min= 758, max= 1304, per=25.02%, avg=1044.47, stdev=167.45, samples=19 iops : min= 189, max= 326, avg=261.05, stdev=41.94, samples=19 lat (msec) : 20=0.04%, 50=26.21%, 100=71.56%, 250=2.19% cpu : usr=0.30%, sys=4.40%, ctx=2775, 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=182219: Sat May 16 06:44:34 2026 write: IOPS=261, BW=1044KiB/s (1069kB/s)(10.0MiB/9805msec); 0 zone resets slat (usec): min=41, max=29154, avg=244.75, stdev=595.52 clat (msec): min=3, max=124, avg=60.57, stdev=14.61 lat (msec): min=7, max=124, avg=60.82, stdev=14.57 clat percentiles (msec): | 1.00th=[ 38], 5.00th=[ 43], 10.00th=[ 46], 20.00th=[ 50], | 30.00th=[ 52], 40.00th=[ 55], 50.00th=[ 59], 60.00th=[ 62], | 70.00th=[ 66], 80.00th=[ 71], 90.00th=[ 80], 95.00th=[ 89], | 99.00th=[ 108], 99.50th=[ 113], 99.90th=[ 125], 99.95th=[ 125], | 99.99th=[ 125] bw ( KiB/s): min= 766, max= 1328, per=25.10%, avg=1047.47, stdev=164.99, samples=19 iops : min= 191, max= 332, avg=261.79, stdev=41.33, samples=19 lat (msec) : 4=0.04%, 10=0.08%, 20=0.08%, 50=24.38%, 100=73.36% lat (msec) : 250=2.07% cpu : usr=0.46%, sys=4.67%, ctx=2740, 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=182220: Sat May 16 06:44:34 2026 write: IOPS=261, BW=1048KiB/s (1073kB/s)(10.0MiB/9775msec); 0 zone resets slat (usec): min=37, max=2205, avg=216.58, stdev=166.36 clat (msec): min=23, max=126, avg=60.79, stdev=14.87 lat (msec): min=23, max=127, avg=61.01, stdev=14.87 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 44], 10.00th=[ 46], 20.00th=[ 49], | 30.00th=[ 52], 40.00th=[ 55], 50.00th=[ 59], 60.00th=[ 62], | 70.00th=[ 66], 80.00th=[ 71], 90.00th=[ 80], 95.00th=[ 89], | 99.00th=[ 113], 99.50th=[ 125], 99.90th=[ 127], 99.95th=[ 127], | 99.99th=[ 128] bw ( KiB/s): min= 726, max= 1296, per=25.17%, avg=1050.79, stdev=161.59, samples=19 iops : min= 181, max= 324, avg=262.63, stdev=40.46, samples=19 lat (msec) : 50=25.08%, 100=72.85%, 250=2.07% cpu : usr=0.50%, sys=3.90%, ctx=2683, 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=182221: Sat May 16 06:44:34 2026 write: IOPS=261, BW=1044KiB/s (1069kB/s)(10.0MiB/9805msec); 0 zone resets slat (usec): min=52, max=33684, avg=230.86, stdev=677.81 clat (msec): min=8, max=123, avg=60.61, stdev=14.70 lat (msec): min=8, max=124, avg=60.84, stdev=14.68 clat percentiles (msec): | 1.00th=[ 37], 5.00th=[ 43], 10.00th=[ 46], 20.00th=[ 49], | 30.00th=[ 52], 40.00th=[ 55], 50.00th=[ 59], 60.00th=[ 62], | 70.00th=[ 66], 80.00th=[ 71], 90.00th=[ 80], 95.00th=[ 89], | 99.00th=[ 111], 99.50th=[ 113], 99.90th=[ 125], 99.95th=[ 125], | 99.99th=[ 125] bw ( KiB/s): min= 726, max= 1360, per=25.10%, avg=1047.63, stdev=171.68, samples=19 iops : min= 181, max= 340, avg=261.84, stdev=42.99, samples=19 lat (msec) : 10=0.08%, 20=0.08%, 50=24.88%, 100=73.09%, 250=1.88% cpu : usr=0.39%, sys=4.45%, ctx=2661, 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=4175KiB/s (4275kB/s), 1044KiB/s-1048KiB/s (1069kB/s-1073kB/s), io=40.0MiB (41.9MB), run=9775-9811msec 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=182232: Sat May 16 06:44:48 2026 read: IOPS=120, BW=482KiB/s (493kB/s)(5048KiB/10479msec) slat (usec): min=80, max=14699, avg=4129.29, stdev=1407.44 clat (msec): min=6, max=104, avg=62.07, stdev=10.51 lat (msec): min=6, max=108, avg=66.20, stdev=10.66 clat percentiles (msec): | 1.00th=[ 41], 5.00th=[ 47], 10.00th=[ 50], 20.00th=[ 54], | 30.00th=[ 57], 40.00th=[ 59], 50.00th=[ 62], 60.00th=[ 65], | 70.00th=[ 68], 80.00th=[ 71], 90.00th=[ 77], 95.00th=[ 81], | 99.00th=[ 88], 99.50th=[ 90], 99.90th=[ 95], 99.95th=[ 105], | 99.99th=[ 105] bw ( KiB/s): min= 392, max= 558, per=25.24%, avg=482.75, stdev=46.72, samples=20 iops : min= 98, max= 139, avg=120.55, stdev=11.68, samples=20 write: IOPS=123, BW=495KiB/s (507kB/s)(5192KiB/10479msec); 0 zone resets slat (usec): min=60, max=2142, avg=221.22, stdev=174.54 clat (msec): min=24, max=100, avg=63.93, stdev= 9.51 lat (msec): min=24, max=100, avg=64.15, stdev= 9.50 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 50], 10.00th=[ 53], 20.00th=[ 57], | 30.00th=[ 59], 40.00th=[ 62], 50.00th=[ 64], 60.00th=[ 66], | 70.00th=[ 69], 80.00th=[ 71], 90.00th=[ 75], 95.00th=[ 81], | 99.00th=[ 90], 99.50th=[ 96], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] bw ( KiB/s): min= 408, max= 632, per=24.86%, avg=494.90, stdev=60.46, samples=20 iops : min= 102, max= 158, avg=123.60, stdev=15.08, samples=20 lat (msec) : 10=0.08%, 20=0.04%, 50=8.75%, 100=91.02%, 250=0.12% cpu : usr=0.58%, sys=4.34%, ctx=4550, 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=182233: Sat May 16 06:44:48 2026 read: IOPS=118, BW=475KiB/s (486kB/s)(4976KiB/10486msec) slat (usec): min=91, max=11538, avg=4146.17, stdev=1312.27 clat (usec): min=27301, max=94830, avg=62022.15, stdev=10248.35 lat (usec): min=27476, max=98751, avg=66171.80, stdev=10438.45 clat percentiles (usec): | 1.00th=[38536], 5.00th=[46400], 10.00th=[49546], 20.00th=[53216], | 30.00th=[56361], 40.00th=[59507], 50.00th=[61604], 60.00th=[64750], | 70.00th=[66847], 80.00th=[69731], 90.00th=[74974], 95.00th=[80217], | 99.00th=[87557], 99.50th=[90702], 99.90th=[93848], 99.95th=[94897], | 99.99th=[94897] bw ( KiB/s): min= 400, max= 584, per=24.74%, avg=473.20, stdev=49.09, samples=20 iops : min= 100, max= 146, avg=118.15, stdev=12.30, samples=20 write: IOPS=125, BW=502KiB/s (514kB/s)(5264KiB/10486msec); 0 zone resets slat (usec): min=43, max=3736, avg=221.43, stdev=226.28 clat (usec): min=15122, max=97628, avg=64054.46, stdev=9112.93 lat (usec): min=15399, max=97771, avg=64277.33, stdev=9115.07 clat percentiles (usec): | 1.00th=[45876], 5.00th=[50070], 10.00th=[53216], 20.00th=[56361], | 30.00th=[58983], 40.00th=[61604], 50.00th=[63701], 60.00th=[65799], | 70.00th=[67634], 80.00th=[70779], 90.00th=[74974], 95.00th=[80217], | 99.00th=[88605], 99.50th=[92799], 99.90th=[95945], 99.95th=[98042], | 99.99th=[98042] bw ( KiB/s): min= 376, max= 592, per=25.30%, avg=503.65, stdev=59.13, samples=20 iops : min= 94, max= 148, avg=125.80, stdev=14.72, samples=20 lat (msec) : 20=0.04%, 50=8.36%, 100=91.60% cpu : usr=0.41%, sys=4.41%, ctx=4522, 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=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=182234: Sat May 16 06:44:48 2026 read: IOPS=120, BW=480KiB/s (492kB/s)(4984KiB/10382msec) slat (usec): min=36, max=11151, avg=4121.95, stdev=1442.92 clat (msec): min=7, max=107, avg=61.40, stdev=11.23 lat (msec): min=10, max=111, avg=65.52, stdev=11.54 clat percentiles (msec): | 1.00th=[ 24], 5.00th=[ 46], 10.00th=[ 49], 20.00th=[ 53], | 30.00th=[ 56], 40.00th=[ 59], 50.00th=[ 62], 60.00th=[ 65], | 70.00th=[ 67], 80.00th=[ 70], 90.00th=[ 75], 95.00th=[ 79], | 99.00th=[ 91], 99.50th=[ 94], 99.90th=[ 99], 99.95th=[ 108], | 99.99th=[ 108] bw ( KiB/s): min= 304, max= 640, per=25.22%, avg=482.45, stdev=71.56, samples=20 iops : min= 76, max= 160, avg=120.45, stdev=17.87, samples=20 write: IOPS=126, BW=506KiB/s (518kB/s)(5256KiB/10382msec); 0 zone resets slat (usec): min=38, max=2310, avg=206.97, stdev=151.87 clat (msec): min=21, max=142, avg=63.88, stdev=10.20 lat (msec): min=21, max=142, avg=64.09, stdev=10.20 clat percentiles (msec): | 1.00th=[ 40], 5.00th=[ 50], 10.00th=[ 53], 20.00th=[ 57], | 30.00th=[ 60], 40.00th=[ 62], 50.00th=[ 64], 60.00th=[ 66], | 70.00th=[ 68], 80.00th=[ 71], 90.00th=[ 74], 95.00th=[ 81], | 99.00th=[ 93], 99.50th=[ 104], 99.90th=[ 117], 99.95th=[ 144], | 99.99th=[ 144] bw ( KiB/s): min= 408, max= 584, per=25.40%, avg=505.70, stdev=45.89, samples=20 iops : min= 102, max= 146, avg=126.30, stdev=11.44, samples=20 lat (msec) : 10=0.04%, 20=0.35%, 50=9.34%, 100=89.96%, 250=0.31% cpu : usr=0.44%, sys=4.42%, ctx=4561, 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=182235: Sat May 16 06:44:48 2026 read: IOPS=120, BW=482KiB/s (494kB/s)(5060KiB/10490msec) slat (usec): min=57, max=13303, avg=4143.95, stdev=1429.26 clat (usec): min=5491, max=97182, avg=62314.15, stdev=10347.12 lat (msec): min=8, max=101, avg=66.46, stdev=10.53 clat percentiles (usec): | 1.00th=[40109], 5.00th=[46400], 10.00th=[49546], 20.00th=[53740], | 30.00th=[57410], 40.00th=[59507], 50.00th=[62129], 60.00th=[64226], | 70.00th=[67634], 80.00th=[70779], 90.00th=[76022], 95.00th=[81265], | 99.00th=[87557], 99.50th=[89654], 99.90th=[94897], 99.95th=[96994], | 99.99th=[96994] bw ( KiB/s): min= 336, max= 574, per=25.29%, avg=483.80, stdev=49.92, samples=20 iops : min= 84, max= 143, avg=120.80, stdev=12.49, samples=20 write: IOPS=123, BW=494KiB/s (506kB/s)(5180KiB/10490msec); 0 zone resets slat (usec): min=53, max=2021, avg=209.85, stdev=159.53 clat (msec): min=25, max=100, avg=63.90, stdev= 9.40 lat (msec): min=25, max=100, avg=64.11, stdev= 9.40 clat percentiles (msec): | 1.00th=[ 44], 5.00th=[ 50], 10.00th=[ 54], 20.00th=[ 57], | 30.00th=[ 60], 40.00th=[ 62], 50.00th=[ 64], 60.00th=[ 66], | 70.00th=[ 68], 80.00th=[ 71], 90.00th=[ 75], 95.00th=[ 81], | 99.00th=[ 91], 99.50th=[ 94], 99.90th=[ 99], 99.95th=[ 101], | 99.99th=[ 101] bw ( KiB/s): min= 368, max= 624, per=24.80%, avg=493.70, stdev=61.71, samples=20 iops : min= 92, max= 156, avg=123.25, stdev=15.43, samples=20 lat (msec) : 10=0.04%, 20=0.04%, 50=8.32%, 100=91.56%, 250=0.04% cpu : usr=0.48%, sys=4.38%, ctx=4554, 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=1913KiB/s (1959kB/s), 475KiB/s-482KiB/s (486kB/s-494kB/s), io=19.6MiB (20.5MB), run=10382-10490msec WRITE: bw=1992KiB/s (2039kB/s), 494KiB/s-506KiB/s (506kB/s-518kB/s), io=20.4MiB (21.4MB), run=10382-10490msec 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=182240: Sat May 16 06:44:53 2026 read: IOPS=5, BW=238MiB/s (250MB/s)(40.0MiB/168msec) slat (nsec): min=12900k, max=12900k, avg=12899967.00, stdev= 0.00 clat (nsec): min=147113k, max=147113k, avg=147112533.00, stdev= 0.00 lat (nsec): min=160016k, max=160016k, avg=160016453.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 148], 10.00th=[ 148], 20.00th=[ 148], | 30.00th=[ 148], 40.00th=[ 148], 50.00th=[ 148], 60.00th=[ 148], | 70.00th=[ 148], 80.00th=[ 148], 90.00th=[ 148], 95.00th=[ 148], | 99.00th=[ 148], 99.50th=[ 148], 99.90th=[ 148], 99.95th=[ 148], | 99.99th=[ 148] lat (msec) : 250=100.00% cpu : usr=0.00%, sys=6.59%, ctx=12, 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=238MiB/s (250MB/s), 238MiB/s-238MiB/s (250MB/s-250MB/s), io=40.0MiB (41.9MB), run=168-168msec 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