== sanity test 398c: run fio to test AIO ================= 08:52:03 (1787835123) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.497868 s, 84.2 MB/s osc.lustre-OST0000-osc-ffff8b7c307f5800.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=145372: Thu Aug 27 08:54:52 2026 write: IOPS=16, BW=64.1KiB/s (65.6kB/s)(10.0MiB/159841msec); 0 zone resets slat (usec): min=22, max=19738, avg=215.40, stdev=906.33 clat (msec): min=161, max=2317, avg=997.91, stdev=302.52 lat (msec): min=161, max=2317, avg=998.13, stdev=302.57 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 468], 10.00th=[ 634], 20.00th=[ 776], | 30.00th=[ 869], 40.00th=[ 927], 50.00th=[ 978], 60.00th=[ 1045], | 70.00th=[ 1133], 80.00th=[ 1234], 90.00th=[ 1368], 95.00th=[ 1502], | 99.00th=[ 1838], 99.50th=[ 2039], 99.90th=[ 2299], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 256, per=25.59%, avg=65.51, stdev=34.25, samples=307 iops : min= 1, max= 64, avg=15.90, stdev= 8.59, samples=307 lat (msec) : 250=1.25%, 500=4.18%, 750=13.09%, 1000=34.30%, 2000=46.60% lat (msec) : >=2000=0.59% cpu : usr=0.05%, sys=0.21%, ctx=1683, 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=145373: Thu Aug 27 08:54:52 2026 write: IOPS=16, BW=64.1KiB/s (65.6kB/s)(10.0MiB/159837msec); 0 zone resets slat (usec): min=22, max=14190, avg=199.69, stdev=740.35 clat (msec): min=94, max=2283, avg=997.64, stdev=299.59 lat (msec): min=94, max=2283, avg=997.84, stdev=299.60 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 502], 10.00th=[ 642], 20.00th=[ 760], | 30.00th=[ 844], 40.00th=[ 919], 50.00th=[ 986], 60.00th=[ 1053], | 70.00th=[ 1133], 80.00th=[ 1234], 90.00th=[ 1368], 95.00th=[ 1485], | 99.00th=[ 1838], 99.50th=[ 2022], 99.90th=[ 2089], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 254, per=24.80%, avg=63.48, stdev=32.83, samples=317 iops : min= 1, max= 63, avg=15.40, stdev= 8.25, samples=317 lat (msec) : 100=0.04%, 250=0.62%, 500=4.30%, 750=13.40%, 1000=33.87% lat (msec) : 2000=47.23%, >=2000=0.55% cpu : usr=0.05%, sys=0.24%, ctx=1801, 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=145374: Thu Aug 27 08:54:52 2026 write: IOPS=16, BW=64.1KiB/s (65.7kB/s)(10.0MiB/159705msec); 0 zone resets slat (usec): min=21, max=19866, avg=231.33, stdev=1020.79 clat (msec): min=195, max=2230, avg=997.61, stdev=301.75 lat (msec): min=195, max=2231, avg=997.84, stdev=301.78 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 498], 10.00th=[ 651], 20.00th=[ 776], | 30.00th=[ 860], 40.00th=[ 919], 50.00th=[ 986], 60.00th=[ 1045], | 70.00th=[ 1133], 80.00th=[ 1217], 90.00th=[ 1351], 95.00th=[ 1519], | 99.00th=[ 1989], 99.50th=[ 2089], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 215, per=24.85%, avg=63.62, stdev=30.59, samples=316 iops : min= 1, max= 53, avg=15.43, stdev= 7.70, samples=316 lat (msec) : 250=0.62%, 500=4.45%, 750=12.77%, 1000=34.45%, 2000=46.72% lat (msec) : >=2000=0.98% cpu : usr=0.04%, sys=0.23%, ctx=1650, 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=145375: Thu Aug 27 08:54:52 2026 write: IOPS=16, BW=64.1KiB/s (65.6kB/s)(10.0MiB/159834msec); 0 zone resets slat (usec): min=22, max=24796, avg=235.10, stdev=1071.80 clat (msec): min=77, max=2229, avg=997.75, stdev=302.29 lat (msec): min=77, max=2229, avg=997.99, stdev=302.29 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 472], 10.00th=[ 634], 20.00th=[ 768], | 30.00th=[ 852], 40.00th=[ 919], 50.00th=[ 986], 60.00th=[ 1053], | 70.00th=[ 1133], 80.00th=[ 1234], 90.00th=[ 1368], 95.00th=[ 1519], | 99.00th=[ 1804], 99.50th=[ 2039], 99.90th=[ 2089], 99.95th=[ 2089], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 175, per=24.95%, avg=63.87, stdev=31.67, samples=315 iops : min= 1, max= 43, avg=15.50, stdev= 7.97, samples=315 lat (msec) : 100=0.12%, 250=0.86%, 500=4.26%, 750=13.28%, 1000=33.32% lat (msec) : 2000=47.66%, >=2000=0.51% cpu : usr=0.06%, sys=0.24%, ctx=1886, 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=256KiB/s (262kB/s), 64.1KiB/s-64.1KiB/s (65.6kB/s-65.7kB/s), io=40.0MiB (41.9MB), run=159705-159841msec 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=145409: Thu Aug 27 08:56:36 2026 read: IOPS=13, BW=52.7KiB/s (53.0kB/s)(5048KiB/95776msec) slat (usec): min=28, max=57671, avg=12745.79, stdev=7297.00 clat (msec): min=46, max=1075, avg=372.53, stdev=97.23 lat (msec): min=57, max=1078, avg=385.28, stdev=98.66 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 230], 10.00th=[ 253], 20.00th=[ 300], | 30.00th=[ 321], 40.00th=[ 347], 50.00th=[ 368], 60.00th=[ 393], | 70.00th=[ 414], 80.00th=[ 443], 90.00th=[ 493], 95.00th=[ 531], | 99.00th=[ 625], 99.50th=[ 667], 99.90th=[ 1003], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 136, per=25.42%, avg=52.88, stdev=23.02, samples=188 iops : min= 1, max= 34, avg=12.80, stdev= 5.80, samples=188 write: IOPS=13, BW=54.2KiB/s (55.5kB/s)(5192KiB/95776msec); 0 zone resets slat (usec): min=28, max=13046, avg=274.18, stdev=873.73 clat (msec): min=140, max=1626, avg=804.64, stdev=227.93 lat (msec): min=140, max=1626, avg=804.91, stdev=227.97 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 447], 10.00th=[ 510], 20.00th=[ 617], | 30.00th=[ 684], 40.00th=[ 743], 50.00th=[ 785], 60.00th=[ 852], | 70.00th=[ 911], 80.00th=[ 1011], 90.00th=[ 1116], 95.00th=[ 1200], | 99.00th=[ 1334], 99.50th=[ 1368], 99.90th=[ 1603], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7, max= 112, per=24.81%, avg=53.84, stdev=21.88, samples=189 iops : min= 1, max= 28, avg=13.03, stdev= 5.54, samples=189 lat (msec) : 50=0.08%, 100=0.20%, 250=4.53%, 500=44.92%, 750=20.51% lat (msec) : 1000=19.26%, 2000=10.51% cpu : usr=0.10%, sys=0.66%, ctx=4572, 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=145410: Thu Aug 27 08:56:36 2026 read: IOPS=12, BW=51.7KiB/s (52.0kB/s)(4976KiB/96217msec) slat (usec): min=2793, max=66018, avg=13011.94, stdev=7661.11 clat (msec): min=12, max=746, avg=369.67, stdev=95.19 lat (msec): min=21, max=766, avg=382.69, stdev=96.33 clat percentiles (msec): | 1.00th=[ 157], 5.00th=[ 226], 10.00th=[ 257], 20.00th=[ 296], | 30.00th=[ 321], 40.00th=[ 338], 50.00th=[ 368], 60.00th=[ 393], | 70.00th=[ 414], 80.00th=[ 443], 90.00th=[ 493], 95.00th=[ 527], | 99.00th=[ 609], 99.50th=[ 642], 99.90th=[ 743], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 119, per=24.58%, avg=51.14, stdev=23.63, samples=191 iops : min= 1, max= 29, avg=12.36, stdev= 5.95, samples=191 write: IOPS=13, BW=54.7KiB/s (56.0kB/s)(5264KiB/96217msec); 0 zone resets slat (usec): min=26, max=13535, avg=251.20, stdev=806.01 clat (msec): min=178, max=1493, avg=806.06, stdev=219.74 lat (msec): min=178, max=1493, avg=806.31, stdev=219.74 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 451], 10.00th=[ 542], 20.00th=[ 617], | 30.00th=[ 684], 40.00th=[ 743], 50.00th=[ 802], 60.00th=[ 860], | 70.00th=[ 902], 80.00th=[ 1003], 90.00th=[ 1116], 95.00th=[ 1183], | 99.00th=[ 1301], 99.50th=[ 1368], 99.90th=[ 1502], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 7, max= 128, per=25.10%, avg=54.46, stdev=19.45, samples=190 iops : min= 1, max= 32, avg=13.19, stdev= 4.93, samples=190 lat (msec) : 20=0.08%, 50=0.08%, 100=0.23%, 250=4.22%, 500=43.40% lat (msec) : 750=22.07%, 1000=19.34%, 2000=10.59% cpu : usr=0.09%, sys=0.67%, ctx=4227, majf=0, minf=15 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=145411: Thu Aug 27 08:56:36 2026 read: IOPS=12, BW=51.8KiB/s (53.0kB/s)(4984KiB/96233msec) slat (usec): min=2732, max=47482, avg=12883.39, stdev=7058.94 clat (msec): min=11, max=672, avg=369.67, stdev=92.29 lat (msec): min=19, max=703, avg=382.56, stdev=93.18 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 234], 10.00th=[ 264], 20.00th=[ 296], | 30.00th=[ 321], 40.00th=[ 342], 50.00th=[ 368], 60.00th=[ 388], | 70.00th=[ 409], 80.00th=[ 443], 90.00th=[ 489], 95.00th=[ 527], | 99.00th=[ 609], 99.50th=[ 625], 99.90th=[ 651], 99.95th=[ 676], | 99.99th=[ 676] bw ( KiB/s): min= 7, max= 152, per=24.78%, avg=51.54, stdev=24.66, samples=190 iops : min= 1, max= 38, avg=12.46, stdev= 6.24, samples=190 write: IOPS=13, BW=54.6KiB/s (55.9kB/s)(5256KiB/96233msec); 0 zone resets slat (usec): min=30, max=18150, avg=272.73, stdev=905.78 clat (msec): min=99, max=1471, avg=806.78, stdev=225.11 lat (msec): min=99, max=1471, avg=807.05, stdev=225.14 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 435], 10.00th=[ 527], 20.00th=[ 617], | 30.00th=[ 693], 40.00th=[ 743], 50.00th=[ 802], 60.00th=[ 860], | 70.00th=[ 927], 80.00th=[ 1003], 90.00th=[ 1099], 95.00th=[ 1183], | 99.00th=[ 1318], 99.50th=[ 1334], 99.90th=[ 1401], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 15, max= 128, per=24.76%, avg=53.73, stdev=19.93, samples=191 iops : min= 3, max= 32, avg=13.01, stdev= 5.04, samples=191 lat (msec) : 20=0.12%, 50=0.20%, 100=0.16%, 250=3.83%, 500=44.65% lat (msec) : 750=20.98%, 1000=19.57%, 2000=10.51% cpu : usr=0.11%, sys=0.67%, ctx=4279, 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=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=145412: Thu Aug 27 08:56:36 2026 read: IOPS=13, BW=52.8KiB/s (54.1kB/s)(5060KiB/95774msec) slat (usec): min=2643, max=52559, avg=13020.38, stdev=7484.31 clat (msec): min=9, max=746, avg=374.74, stdev=93.47 lat (msec): min=13, max=766, avg=387.78, stdev=94.44 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 239], 10.00th=[ 266], 20.00th=[ 300], | 30.00th=[ 330], 40.00th=[ 347], 50.00th=[ 372], 60.00th=[ 397], | 70.00th=[ 414], 80.00th=[ 443], 90.00th=[ 493], 95.00th=[ 542], | 99.00th=[ 634], 99.50th=[ 651], 99.90th=[ 718], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 8, max= 111, per=25.34%, avg=52.71, stdev=20.76, samples=189 iops : min= 2, max= 27, avg=12.75, stdev= 5.24, samples=189 write: IOPS=13, BW=54.1KiB/s (55.4kB/s)(5180KiB/95774msec); 0 zone resets slat (usec): min=27, max=10440, avg=247.59, stdev=658.92 clat (msec): min=260, max=1471, avg=801.83, stdev=217.30 lat (msec): min=261, max=1471, avg=802.08, stdev=217.30 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 460], 10.00th=[ 527], 20.00th=[ 617], | 30.00th=[ 693], 40.00th=[ 735], 50.00th=[ 785], 60.00th=[ 844], | 70.00th=[ 911], 80.00th=[ 986], 90.00th=[ 1099], 95.00th=[ 1200], | 99.00th=[ 1318], 99.50th=[ 1368], 99.90th=[ 1435], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 15, max= 144, per=24.65%, avg=53.49, stdev=21.22, samples=190 iops : min= 3, max= 36, avg=12.94, stdev= 5.37, samples=190 lat (msec) : 10=0.04%, 20=0.04%, 50=0.20%, 100=0.12%, 250=3.05% lat (msec) : 500=45.16%, 750=22.62%, 1000=19.38%, 2000=9.41% cpu : usr=0.11%, sys=0.72%, ctx=4774, majf=0, minf=15 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), 51.7KiB/s-52.8KiB/s (52.0kB/s-54.1kB/s), io=19.6MiB (20.5MB), run=95774-96233msec WRITE: bw=217KiB/s (222kB/s), 54.1KiB/s-54.7KiB/s (55.4kB/s-56.0kB/s), io=20.4MiB (21.4MB), run=95774-96233msec 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=145430: Thu Aug 27 08:56:46 2026 read: IOPS=2, BW=93.5MiB/s (97.0MB/s)(40.0MiB/428msec) slat (nsec): min=37222k, max=37222k, avg=37221612.00, stdev= 0.00 clat (nsec): min=359241k, max=359241k, avg=359240780.00, stdev= 0.00 lat (nsec): min=396498k, max=396498k, avg=396498208.00, 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=3.04%, ctx=43, majf=0, minf=10 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=93.5MiB/s (97.0MB/s), 93.5MiB/s-93.5MiB/s (97.0MB/s-97.0MB/s), io=40.0MiB (41.9MB), run=428-428msec 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