== sanity test 398c: run fio to test AIO ================= 23:22:07 (1787368927) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.379491 s, 111 MB/s osc.lustre-OST0000-osc-ffff980a45569000.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=146667: Fri Aug 21 23:24:44 2026 write: IOPS=17, BW=69.2KiB/s (70.9kB/s)(10.0MiB/147868msec); 0 zone resets slat (usec): min=20, max=29234, avg=233.33, stdev=1219.23 clat (msec): min=163, max=2045, avg=923.36, stdev=284.53 lat (msec): min=167, max=2045, avg=923.60, stdev=284.53 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 498], 10.00th=[ 600], 20.00th=[ 693], | 30.00th=[ 751], 40.00th=[ 827], 50.00th=[ 902], 60.00th=[ 978], | 70.00th=[ 1062], 80.00th=[ 1150], 90.00th=[ 1301], 95.00th=[ 1401], | 99.00th=[ 1670], 99.50th=[ 1737], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 256, per=25.17%, avg=69.46, stdev=37.04, samples=289 iops : min= 1, max= 64, avg=16.90, stdev= 9.31, samples=289 lat (msec) : 250=0.62%, 500=4.45%, 750=25.04%, 1000=32.97%, 2000=36.88% lat (msec) : >=2000=0.04% cpu : usr=0.05%, sys=0.22%, ctx=1692, 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=146668: Fri Aug 21 23:24:44 2026 write: IOPS=17, BW=69.3KiB/s (70.9kB/s)(10.0MiB/147802msec); 0 zone resets slat (usec): min=24, max=37662, avg=240.10, stdev=1215.35 clat (msec): min=84, max=1964, avg=922.12, stdev=288.32 lat (msec): min=84, max=1964, avg=922.37, stdev=288.28 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 498], 10.00th=[ 600], 20.00th=[ 684], | 30.00th=[ 760], 40.00th=[ 835], 50.00th=[ 894], 60.00th=[ 969], | 70.00th=[ 1045], 80.00th=[ 1150], 90.00th=[ 1301], 95.00th=[ 1418], | 99.00th=[ 1687], 99.50th=[ 1737], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1972] bw ( KiB/s): min= 7, max= 207, per=24.83%, avg=68.53, stdev=29.90, samples=293 iops : min= 1, max= 51, avg=16.67, stdev= 7.53, samples=293 lat (msec) : 100=0.08%, 250=1.02%, 500=4.22%, 750=23.83%, 1000=34.41% lat (msec) : 2000=36.45% cpu : usr=0.05%, sys=0.24%, ctx=1978, 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=146669: Fri Aug 21 23:24:44 2026 write: IOPS=17, BW=69.3KiB/s (70.9kB/s)(10.0MiB/147854msec); 0 zone resets slat (usec): min=21, max=30669, avg=191.93, stdev=955.80 clat (msec): min=205, max=2046, avg=922.52, stdev=286.68 lat (msec): min=205, max=2046, avg=922.71, stdev=286.71 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 514], 10.00th=[ 592], 20.00th=[ 676], | 30.00th=[ 760], 40.00th=[ 844], 50.00th=[ 894], 60.00th=[ 961], | 70.00th=[ 1045], 80.00th=[ 1150], 90.00th=[ 1318], 95.00th=[ 1452], | 99.00th=[ 1670], 99.50th=[ 1703], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 255, per=25.09%, avg=69.25, stdev=33.81, samples=290 iops : min= 1, max= 63, avg=16.84, stdev= 8.48, samples=290 lat (msec) : 250=0.62%, 500=3.75%, 750=24.57%, 1000=35.98%, 2000=35.04% lat (msec) : >=2000=0.04% cpu : usr=0.05%, sys=0.21%, ctx=1718, 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=146670: Fri Aug 21 23:24:44 2026 write: IOPS=17, BW=69.2KiB/s (70.9kB/s)(10.0MiB/147906msec); 0 zone resets slat (usec): min=21, max=16764, avg=209.56, stdev=876.91 clat (msec): min=205, max=2035, avg=922.83, stdev=281.36 lat (msec): min=205, max=2035, avg=923.04, stdev=281.34 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 523], 10.00th=[ 609], 20.00th=[ 693], | 30.00th=[ 760], 40.00th=[ 835], 50.00th=[ 902], 60.00th=[ 961], | 70.00th=[ 1036], 80.00th=[ 1150], 90.00th=[ 1301], 95.00th=[ 1435], | 99.00th=[ 1687], 99.50th=[ 1754], 99.90th=[ 2022], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 255, per=24.75%, avg=68.30, stdev=34.25, samples=294 iops : min= 1, max= 63, avg=16.61, stdev= 8.56, samples=294 lat (msec) : 250=0.62%, 500=3.71%, 750=24.02%, 1000=36.33%, 2000=35.16% lat (msec) : >=2000=0.16% cpu : usr=0.05%, sys=0.24%, ctx=2023, 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=277KiB/s (284kB/s), 69.2KiB/s-69.3KiB/s (70.9kB/s-70.9kB/s), io=40.0MiB (41.9MB), run=147802-147906msec 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=146701: Fri Aug 21 23:26:35 2026 read: IOPS=12, BW=49.0KiB/s (51.2kB/s)(5048KiB/101052msec) slat (usec): min=3016, max=67855, avg=14099.47, stdev=8277.95 clat (msec): min=13, max=695, avg=389.71, stdev=92.58 lat (msec): min=19, max=706, avg=403.81, stdev=93.31 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 259], 10.00th=[ 288], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 405], | 70.00th=[ 430], 80.00th=[ 460], 90.00th=[ 506], 95.00th=[ 550], | 99.00th=[ 642], 99.50th=[ 659], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 8, max= 111, per=24.94%, avg=49.38, stdev=20.85, samples=201 iops : min= 2, max= 27, avg=11.90, stdev= 5.25, samples=201 write: IOPS=12, BW=51.4KiB/s (52.6kB/s)(5192KiB/101052msec); 0 zone resets slat (usec): min=31, max=13428, avg=231.58, stdev=723.30 clat (msec): min=248, max=1505, avg=849.86, stdev=227.38 lat (msec): min=248, max=1505, avg=850.09, stdev=227.40 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 514], 10.00th=[ 584], 20.00th=[ 659], | 30.00th=[ 718], 40.00th=[ 768], 50.00th=[ 818], 60.00th=[ 885], | 70.00th=[ 944], 80.00th=[ 1045], 90.00th=[ 1167], 95.00th=[ 1284], | 99.00th=[ 1435], 99.50th=[ 1469], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 7, max= 128, per=24.57%, avg=50.61, stdev=22.07, samples=201 iops : min= 1, max= 32, avg=12.20, stdev= 5.57, samples=201 lat (msec) : 20=0.08%, 50=0.16%, 100=0.08%, 250=1.60%, 500=43.71% lat (msec) : 750=21.84%, 1000=20.00%, 2000=12.54% cpu : usr=0.11%, sys=0.58%, ctx=4168, 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=146702: Fri Aug 21 23:26:35 2026 read: IOPS=12, BW=49.2KiB/s (50.4kB/s)(4976KiB/101045msec) slat (usec): min=59, max=78364, avg=14123.00, stdev=8162.96 clat (msec): min=23, max=795, avg=388.81, stdev=92.77 lat (msec): min=24, max=805, avg=402.94, stdev=94.04 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 255], 10.00th=[ 284], 20.00th=[ 313], | 30.00th=[ 334], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 409], | 70.00th=[ 430], 80.00th=[ 460], 90.00th=[ 502], 95.00th=[ 542], | 99.00th=[ 642], 99.50th=[ 684], 99.90th=[ 768], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 128, per=24.80%, avg=49.11, stdev=22.47, samples=199 iops : min= 1, max= 32, avg=11.83, stdev= 5.67, samples=199 write: IOPS=13, BW=52.1KiB/s (53.3kB/s)(5264KiB/101045msec); 0 zone resets slat (usec): min=28, max=11574, avg=231.53, stdev=655.51 clat (msec): min=102, max=1520, avg=846.53, stdev=231.57 lat (msec): min=102, max=1520, avg=846.76, stdev=231.59 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 493], 10.00th=[ 567], 20.00th=[ 651], | 30.00th=[ 718], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 885], | 70.00th=[ 944], 80.00th=[ 1028], 90.00th=[ 1167], 95.00th=[ 1284], | 99.00th=[ 1435], 99.50th=[ 1469], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 7, max= 128, per=24.93%, avg=51.35, stdev=22.07, samples=201 iops : min= 1, max= 32, avg=12.39, stdev= 5.54, samples=201 lat (msec) : 50=0.12%, 100=0.12%, 250=2.23%, 500=43.87%, 750=20.20% lat (msec) : 1000=21.52%, 2000=11.95% cpu : usr=0.11%, sys=0.64%, ctx=4184, 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=146703: Fri Aug 21 23:26:35 2026 read: IOPS=12, BW=49.3KiB/s (50.5kB/s)(4984KiB/101055msec) slat (usec): min=2879, max=64552, avg=14127.54, stdev=8099.76 clat (msec): min=20, max=815, avg=391.56, stdev=93.83 lat (msec): min=26, max=823, avg=405.69, stdev=94.73 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 262], 10.00th=[ 284], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 388], 60.00th=[ 405], | 70.00th=[ 430], 80.00th=[ 468], 90.00th=[ 506], 95.00th=[ 550], | 99.00th=[ 651], 99.50th=[ 676], 99.90th=[ 760], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 111, per=24.81%, avg=49.13, stdev=22.05, samples=200 iops : min= 1, max= 27, avg=11.84, stdev= 5.51, samples=200 write: IOPS=13, BW=52.0KiB/s (53.3kB/s)(5256KiB/101055msec); 0 zone resets slat (usec): min=22, max=8314, avg=203.49, stdev=470.81 clat (msec): min=247, max=1515, avg=843.37, stdev=233.33 lat (msec): min=247, max=1515, avg=843.57, stdev=233.36 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 493], 10.00th=[ 575], 20.00th=[ 651], | 30.00th=[ 709], 40.00th=[ 760], 50.00th=[ 818], 60.00th=[ 877], | 70.00th=[ 953], 80.00th=[ 1036], 90.00th=[ 1167], 95.00th=[ 1284], | 99.00th=[ 1418], 99.50th=[ 1452], 99.90th=[ 1502], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 7, max= 128, per=24.79%, avg=51.07, stdev=22.14, samples=201 iops : min= 1, max= 32, avg=12.32, stdev= 5.58, samples=201 lat (msec) : 50=0.12%, 100=0.16%, 250=1.60%, 500=43.87%, 750=22.03% lat (msec) : 1000=19.84%, 2000=12.38% cpu : usr=0.09%, sys=0.63%, ctx=4065, 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=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=146705: Fri Aug 21 23:26:35 2026 read: IOPS=12, BW=50.2KiB/s (51.4kB/s)(5060KiB/100860msec) slat (usec): min=3044, max=56054, avg=13980.50, stdev=8040.96 clat (msec): min=34, max=738, avg=387.87, stdev=93.48 lat (msec): min=43, max=745, avg=401.86, stdev=94.97 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 255], 10.00th=[ 284], 20.00th=[ 313], | 30.00th=[ 334], 40.00th=[ 359], 50.00th=[ 380], 60.00th=[ 405], | 70.00th=[ 426], 80.00th=[ 464], 90.00th=[ 510], 95.00th=[ 558], | 99.00th=[ 634], 99.50th=[ 659], 99.90th=[ 676], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 112, per=25.27%, avg=50.04, stdev=20.91, samples=199 iops : min= 1, max= 28, avg=12.06, stdev= 5.26, samples=199 write: IOPS=12, BW=51.4KiB/s (52.6kB/s)(5180KiB/100860msec); 0 zone resets slat (usec): min=25, max=15538, avg=197.21, stdev=630.24 clat (msec): min=231, max=1532, avg=851.08, stdev=232.17 lat (msec): min=231, max=1532, avg=851.28, stdev=232.18 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 506], 10.00th=[ 567], 20.00th=[ 651], | 30.00th=[ 718], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 894], | 70.00th=[ 969], 80.00th=[ 1045], 90.00th=[ 1167], 95.00th=[ 1284], | 99.00th=[ 1401], 99.50th=[ 1452], 99.90th=[ 1502], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7, max= 135, per=24.74%, avg=50.95, stdev=21.32, samples=199 iops : min= 1, max= 33, avg=12.29, stdev= 5.32, samples=199 lat (msec) : 50=0.08%, 100=0.20%, 250=2.07%, 500=43.83%, 750=20.82% lat (msec) : 1000=20.00%, 2000=13.01% cpu : usr=0.08%, sys=0.66%, ctx=4124, 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=199KiB/s (203kB/s), 49.2KiB/s-50.2KiB/s (50.4kB/s-51.4kB/s), io=19.6MiB (20.5MB), run=100860-101055msec WRITE: bw=207KiB/s (212kB/s), 51.4KiB/s-52.1KiB/s (52.6kB/s-53.3kB/s), io=20.4MiB (21.4MB), run=100860-101055msec 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=146724: Fri Aug 21 23:26:45 2026 read: IOPS=1, BW=77.0MiB/s (81.8MB/s)(40.0MiB/513msec) slat (nsec): min=46793k, max=46793k, avg=46792607.00, stdev= 0.00 clat (nsec): min=418791k, max=418791k, avg=418790519.00, stdev= 0.00 lat (nsec): min=465587k, max=465587k, avg=465587344.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 418], 10.00th=[ 418], 20.00th=[ 418], | 30.00th=[ 418], 40.00th=[ 418], 50.00th=[ 418], 60.00th=[ 418], | 70.00th=[ 418], 80.00th=[ 418], 90.00th=[ 418], 95.00th=[ 418], | 99.00th=[ 418], 99.50th=[ 418], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.34%, 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=77.0MiB/s (81.8MB/s), 77.0MiB/s-77.0MiB/s (81.8MB/s-81.8MB/s), io=40.0MiB (41.9MB), run=513-513msec 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