== sanity test 398c: run fio to test AIO ================= 15:04:59 (1789067099) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.393238 s, 107 MB/s osc.lustre-OST0000-osc-ffff9fca03f97000.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=145977: Thu Sep 10 15:07:38 2026 write: IOPS=16, BW=67.0KiB/s (68.6kB/s)(10.0MiB/152777msec); 0 zone resets slat (usec): min=22, max=14425, avg=190.28, stdev=777.55 clat (msec): min=117, max=2810, avg=953.71, stdev=354.58 lat (msec): min=117, max=2810, avg=953.90, stdev=354.61 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 481], 10.00th=[ 600], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 894], 60.00th=[ 953], | 70.00th=[ 1028], 80.00th=[ 1133], 90.00th=[ 1368], 95.00th=[ 1586], | 99.00th=[ 2366], 99.50th=[ 2467], 99.90th=[ 2601], 99.95th=[ 2735], | 99.99th=[ 2802] bw ( KiB/s): min= 7, max= 255, per=25.11%, avg=67.29, stdev=31.85, samples=299 iops : min= 1, max= 63, avg=16.38, stdev= 7.97, samples=299 lat (msec) : 250=1.25%, 500=4.57%, 750=17.54%, 1000=42.42%, 2000=31.68% lat (msec) : >=2000=2.54% cpu : usr=0.03%, sys=0.19%, ctx=1448, 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=145978: Thu Sep 10 15:07:38 2026 write: IOPS=16, BW=67.0KiB/s (68.6kB/s)(10.0MiB/152831msec); 0 zone resets slat (usec): min=29, max=29461, avg=223.33, stdev=1011.90 clat (msec): min=119, max=2775, avg=954.02, stdev=359.21 lat (msec): min=119, max=2775, avg=954.25, stdev=359.22 clat percentiles (msec): | 1.00th=[ 201], 5.00th=[ 489], 10.00th=[ 617], 20.00th=[ 718], | 30.00th=[ 785], 40.00th=[ 844], 50.00th=[ 894], 60.00th=[ 953], | 70.00th=[ 1036], 80.00th=[ 1133], 90.00th=[ 1334], 95.00th=[ 1569], | 99.00th=[ 2433], 99.50th=[ 2500], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 7, max= 215, per=24.78%, avg=66.40, stdev=33.23, samples=303 iops : min= 1, max= 53, avg=16.17, stdev= 8.33, samples=303 lat (msec) : 250=1.05%, 500=4.10%, 750=19.45%, 1000=41.60%, 2000=31.37% lat (msec) : >=2000=2.42% cpu : usr=0.03%, sys=0.22%, ctx=1763, 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=145979: Thu Sep 10 15:07:38 2026 write: IOPS=16, BW=67.1KiB/s (68.7kB/s)(10.0MiB/152647msec); 0 zone resets slat (usec): min=21, max=28510, avg=229.45, stdev=1105.30 clat (msec): min=46, max=2733, avg=953.42, stdev=351.01 lat (msec): min=46, max=2733, avg=953.65, stdev=350.97 clat percentiles (msec): | 1.00th=[ 222], 5.00th=[ 493], 10.00th=[ 625], 20.00th=[ 735], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 894], 60.00th=[ 953], | 70.00th=[ 1036], 80.00th=[ 1133], 90.00th=[ 1351], 95.00th=[ 1586], | 99.00th=[ 2333], 99.50th=[ 2467], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2735] bw ( KiB/s): min= 7, max= 235, per=25.11%, avg=67.28, stdev=31.99, samples=299 iops : min= 1, max= 58, avg=16.38, stdev= 8.03, samples=299 lat (msec) : 50=0.04%, 100=0.04%, 250=0.98%, 500=4.22%, 750=18.28% lat (msec) : 1000=42.66%, 2000=31.52%, >=2000=2.27% cpu : usr=0.04%, sys=0.23%, ctx=1903, 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=145980: Thu Sep 10 15:07:38 2026 write: IOPS=16, BW=67.0KiB/s (68.6kB/s)(10.0MiB/152776msec); 0 zone resets slat (usec): min=27, max=28909, avg=195.28, stdev=990.39 clat (msec): min=114, max=2809, avg=953.65, stdev=354.63 lat (msec): min=114, max=2810, avg=953.85, stdev=354.65 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 472], 10.00th=[ 617], 20.00th=[ 726], | 30.00th=[ 785], 40.00th=[ 844], 50.00th=[ 902], 60.00th=[ 961], | 70.00th=[ 1045], 80.00th=[ 1116], 90.00th=[ 1318], 95.00th=[ 1603], | 99.00th=[ 2366], 99.50th=[ 2500], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2802] bw ( KiB/s): min= 7, max= 209, per=25.03%, avg=67.08, stdev=31.04, samples=300 iops : min= 1, max= 52, avg=16.33, stdev= 7.79, samples=300 lat (msec) : 250=0.86%, 500=4.61%, 750=18.24%, 1000=41.33%, 2000=32.38% lat (msec) : >=2000=2.58% cpu : usr=0.04%, sys=0.21%, ctx=1745, 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=268KiB/s (274kB/s), 67.0KiB/s-67.1KiB/s (68.6kB/s-68.7kB/s), io=40.0MiB (41.9MB), run=152647-152831msec 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=146012: Thu Sep 10 15:09:23 2026 read: IOPS=13, BW=52.6KiB/s (53.8kB/s)(5048KiB/96053msec) slat (usec): min=2515, max=65734, avg=12510.95, stdev=7245.05 clat (msec): min=6, max=932, avg=374.65, stdev=105.39 lat (msec): min=11, max=960, avg=387.17, stdev=106.72 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 234], 10.00th=[ 264], 20.00th=[ 300], | 30.00th=[ 321], 40.00th=[ 342], 50.00th=[ 363], 60.00th=[ 384], | 70.00th=[ 414], 80.00th=[ 447], 90.00th=[ 502], 95.00th=[ 567], | 99.00th=[ 667], 99.50th=[ 726], 99.90th=[ 936], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 111, per=25.02%, avg=52.03, stdev=22.04, samples=191 iops : min= 1, max= 27, avg=12.57, stdev= 5.53, samples=191 write: IOPS=13, BW=54.1KiB/s (55.3kB/s)(5192KiB/96053msec); 0 zone resets slat (usec): min=32, max=10592, avg=233.81, stdev=710.10 clat (msec): min=258, max=1593, avg=804.25, stdev=222.86 lat (msec): min=258, max=1593, avg=804.49, stdev=222.88 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 485], 10.00th=[ 523], 20.00th=[ 617], | 30.00th=[ 693], 40.00th=[ 743], 50.00th=[ 785], 60.00th=[ 827], | 70.00th=[ 885], 80.00th=[ 978], 90.00th=[ 1116], 95.00th=[ 1217], | 99.00th=[ 1435], 99.50th=[ 1536], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 7, max= 111, per=24.57%, avg=53.32, stdev=20.01, samples=191 iops : min= 1, max= 27, avg=12.89, stdev= 5.03, samples=191 lat (msec) : 10=0.08%, 20=0.04%, 50=0.20%, 100=0.08%, 250=3.32% lat (msec) : 500=44.26%, 750=22.50%, 1000=20.78%, 2000=8.75% cpu : usr=0.09%, sys=0.54%, ctx=4377, 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=146013: Thu Sep 10 15:09:23 2026 read: IOPS=12, BW=51.8KiB/s (53.0kB/s)(4976KiB/96057msec) slat (usec): min=37, max=56627, avg=12294.36, stdev=6664.01 clat (msec): min=26, max=999, avg=379.58, stdev=112.03 lat (msec): min=26, max=1017, avg=391.88, stdev=112.96 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 241], 10.00th=[ 268], 20.00th=[ 296], | 30.00th=[ 321], 40.00th=[ 347], 50.00th=[ 368], 60.00th=[ 393], | 70.00th=[ 418], 80.00th=[ 451], 90.00th=[ 510], 95.00th=[ 592], | 99.00th=[ 718], 99.50th=[ 844], 99.90th=[ 986], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 104, per=24.74%, avg=51.46, stdev=21.74, samples=190 iops : min= 1, max= 26, avg=12.43, stdev= 5.46, samples=190 write: IOPS=13, BW=54.8KiB/s (56.1kB/s)(5264KiB/96057msec); 0 zone resets slat (usec): min=31, max=11728, avg=191.64, stdev=559.02 clat (msec): min=178, max=1584, avg=796.39, stdev=224.61 lat (msec): min=178, max=1584, avg=796.58, stdev=224.59 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 464], 10.00th=[ 514], 20.00th=[ 600], | 30.00th=[ 684], 40.00th=[ 743], 50.00th=[ 785], 60.00th=[ 835], | 70.00th=[ 894], 80.00th=[ 978], 90.00th=[ 1083], 95.00th=[ 1183], | 99.00th=[ 1385], 99.50th=[ 1519], 99.90th=[ 1569], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 15, max= 143, per=24.95%, avg=54.15, stdev=23.46, samples=191 iops : min= 3, max= 35, avg=13.10, stdev= 5.84, samples=191 lat (msec) : 50=0.23%, 100=0.20%, 250=3.32%, 500=44.10%, 750=21.80% lat (msec) : 1000=21.56%, 2000=8.79% cpu : usr=0.10%, sys=0.52%, ctx=3935, 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=146014: Thu Sep 10 15:09:23 2026 read: IOPS=12, BW=51.8KiB/s (53.1kB/s)(4984KiB/96199msec) slat (usec): min=2653, max=60282, avg=12493.45, stdev=6900.83 clat (msec): min=6, max=986, avg=373.16, stdev=104.49 lat (msec): min=18, max=1003, avg=385.66, stdev=105.37 clat percentiles (msec): | 1.00th=[ 65], 5.00th=[ 230], 10.00th=[ 264], 20.00th=[ 296], | 30.00th=[ 321], 40.00th=[ 347], 50.00th=[ 368], 60.00th=[ 388], | 70.00th=[ 414], 80.00th=[ 443], 90.00th=[ 502], 95.00th=[ 567], | 99.00th=[ 667], 99.50th=[ 709], 99.90th=[ 760], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 143, per=24.86%, avg=51.70, stdev=23.81, samples=189 iops : min= 1, max= 35, avg=12.48, stdev= 5.95, samples=189 write: IOPS=13, BW=54.6KiB/s (55.9kB/s)(5256KiB/96199msec); 0 zone resets slat (usec): min=33, max=10902, avg=213.93, stdev=696.60 clat (msec): min=96, max=1634, avg=803.00, stdev=229.92 lat (msec): min=98, max=1634, avg=803.22, stdev=229.89 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 460], 10.00th=[ 510], 20.00th=[ 617], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 793], 60.00th=[ 835], | 70.00th=[ 911], 80.00th=[ 978], 90.00th=[ 1116], 95.00th=[ 1200], | 99.00th=[ 1401], 99.50th=[ 1519], 99.90th=[ 1569], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 8, max= 111, per=24.62%, avg=53.42, stdev=19.30, samples=191 iops : min= 2, max= 27, avg=12.91, stdev= 4.81, samples=191 lat (msec) : 10=0.12%, 50=0.23%, 100=0.39%, 250=3.55%, 500=44.22% lat (msec) : 750=20.62%, 1000=21.84%, 2000=9.02% cpu : usr=0.08%, sys=0.53%, ctx=4143, 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=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=146015: Thu Sep 10 15:09:23 2026 read: IOPS=13, BW=52.7KiB/s (53.9kB/s)(5060KiB/96055msec) slat (usec): min=2363, max=64215, avg=12414.59, stdev=7060.29 clat (msec): min=19, max=979, avg=377.15, stdev=103.10 lat (msec): min=30, max=988, avg=389.57, stdev=104.15 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 243], 10.00th=[ 264], 20.00th=[ 296], | 30.00th=[ 321], 40.00th=[ 347], 50.00th=[ 363], 60.00th=[ 388], | 70.00th=[ 414], 80.00th=[ 443], 90.00th=[ 502], 95.00th=[ 575], | 99.00th=[ 701], 99.50th=[ 726], 99.90th=[ 827], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 143, per=25.38%, avg=52.79, stdev=22.21, samples=189 iops : min= 1, max= 35, avg=12.75, stdev= 5.62, samples=189 write: IOPS=13, BW=53.9KiB/s (55.2kB/s)(5180KiB/96055msec); 0 zone resets slat (usec): min=30, max=8508, avg=192.46, stdev=469.09 clat (msec): min=275, max=1609, avg=803.18, stdev=219.00 lat (msec): min=275, max=1609, avg=803.37, stdev=218.98 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 460], 10.00th=[ 518], 20.00th=[ 617], | 30.00th=[ 693], 40.00th=[ 743], 50.00th=[ 793], 60.00th=[ 835], | 70.00th=[ 894], 80.00th=[ 969], 90.00th=[ 1116], 95.00th=[ 1200], | 99.00th=[ 1385], 99.50th=[ 1469], 99.90th=[ 1536], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 7, max= 127, per=24.61%, avg=53.41, stdev=20.62, samples=190 iops : min= 1, max= 31, avg=12.91, stdev= 5.16, samples=190 lat (msec) : 20=0.04%, 50=0.12%, 100=0.08%, 250=2.77%, 500=45.23% lat (msec) : 750=22.15%, 1000=20.90%, 2000=8.71% cpu : usr=0.09%, sys=0.54%, ctx=4179, 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=209KiB/s (214kB/s), 51.8KiB/s-52.7KiB/s (53.0kB/s-53.9kB/s), io=19.6MiB (20.5MB), run=96053-96199msec WRITE: bw=217KiB/s (222kB/s), 53.9KiB/s-54.8KiB/s (55.2kB/s-56.1kB/s), io=20.4MiB (21.4MB), run=96053-96199msec 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=146034: Thu Sep 10 15:09:32 2026 read: IOPS=2, BW=95.9MiB/s (101MB/s)(40.0MiB/417msec) slat (nsec): min=25603k, max=25603k, avg=25602857.00, stdev= 0.00 clat (nsec): min=357645k, max=357645k, avg=357645114.00, stdev= 0.00 lat (nsec): min=383252k, max=383252k, avg=383252033.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 359], 10.00th=[ 359], 20.00th=[ 359], | 30.00th=[ 359], 40.00th=[ 359], 50.00th=[ 359], 60.00th=[ 359], | 70.00th=[ 359], 80.00th=[ 359], 90.00th=[ 359], 95.00th=[ 359], | 99.00th=[ 359], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 359], | 99.99th=[ 359] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.88%, ctx=43, 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=95.9MiB/s (101MB/s), 95.9MiB/s-95.9MiB/s (101MB/s-101MB/s), io=40.0MiB (41.9MB), run=417-417msec 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