== sanity test 398c: run fio to test AIO ================= 23:01:43 (1787194903) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.465297 s, 90.1 MB/s osc.lustre-OST0000-osc-ffff8f128305d800.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=145507: Wed Aug 19 23:04:21 2026 write: IOPS=17, BW=69.3KiB/s (70.0kB/s)(10.0MiB/147767msec); 0 zone resets slat (usec): min=29, max=24953, avg=211.33, stdev=795.49 clat (msec): min=121, max=2106, avg=922.46, stdev=278.16 lat (msec): min=121, max=2106, avg=922.68, stdev=278.21 clat percentiles (msec): | 1.00th=[ 234], 5.00th=[ 550], 10.00th=[ 625], 20.00th=[ 726], | 30.00th=[ 776], 40.00th=[ 844], 50.00th=[ 885], 60.00th=[ 944], | 70.00th=[ 1003], 80.00th=[ 1116], 90.00th=[ 1301], 95.00th=[ 1452], | 99.00th=[ 1703], 99.50th=[ 1804], 99.90th=[ 2039], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 7, max= 255, per=24.88%, avg=68.93, stdev=34.43, samples=292 iops : min= 1, max= 63, avg=16.78, stdev= 8.62, samples=292 lat (msec) : 250=1.29%, 500=2.58%, 750=20.66%, 1000=44.84%, 2000=30.47% lat (msec) : >=2000=0.16% cpu : usr=0.04%, sys=0.23%, ctx=1665, 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=145508: Wed Aug 19 23:04:21 2026 write: IOPS=17, BW=69.3KiB/s (71.0kB/s)(10.0MiB/147680msec); 0 zone resets slat (usec): min=25, max=16007, avg=204.15, stdev=768.28 clat (msec): min=125, max=2109, avg=921.75, stdev=277.85 lat (msec): min=126, max=2109, avg=921.96, stdev=277.88 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 550], 10.00th=[ 625], 20.00th=[ 718], | 30.00th=[ 785], 40.00th=[ 835], 50.00th=[ 885], 60.00th=[ 953], | 70.00th=[ 1020], 80.00th=[ 1116], 90.00th=[ 1267], 95.00th=[ 1452], | 99.00th=[ 1687], 99.50th=[ 1787], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2106] bw ( KiB/s): min= 7, max= 255, per=24.89%, avg=68.95, stdev=31.40, samples=292 iops : min= 1, max= 63, avg=16.78, stdev= 7.88, samples=292 lat (msec) : 250=1.29%, 500=2.42%, 750=20.74%, 1000=42.77%, 2000=32.66% lat (msec) : >=2000=0.12% cpu : usr=0.05%, sys=0.23%, ctx=1715, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=145509: Wed Aug 19 23:04:21 2026 write: IOPS=17, BW=69.6KiB/s (71.3kB/s)(10.0MiB/147042msec); 0 zone resets slat (usec): min=22, max=15450, avg=194.57, stdev=661.42 clat (msec): min=87, max=2070, avg=918.30, stdev=279.95 lat (msec): min=87, max=2070, avg=918.50, stdev=279.94 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 542], 10.00th=[ 625], 20.00th=[ 718], | 30.00th=[ 776], 40.00th=[ 835], 50.00th=[ 894], 60.00th=[ 944], | 70.00th=[ 1011], 80.00th=[ 1099], 90.00th=[ 1284], 95.00th=[ 1469], | 99.00th=[ 1687], 99.50th=[ 1838], 99.90th=[ 1972], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 7, max= 240, per=25.23%, avg=69.89, stdev=33.58, samples=288 iops : min= 1, max= 60, avg=17.01, stdev= 8.45, samples=288 lat (msec) : 100=0.23%, 250=0.94%, 500=2.81%, 750=21.05%, 1000=43.79% lat (msec) : 2000=31.09%, >=2000=0.08% cpu : usr=0.04%, sys=0.23%, ctx=1826, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=145510: Wed Aug 19 23:04:21 2026 write: IOPS=17, BW=69.3KiB/s (71.0kB/s)(10.0MiB/147683msec); 0 zone resets slat (usec): min=27, max=14657, avg=218.18, stdev=787.35 clat (msec): min=137, max=2106, avg=921.93, stdev=281.64 lat (msec): min=149, max=2106, avg=922.15, stdev=281.63 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 542], 10.00th=[ 625], 20.00th=[ 718], | 30.00th=[ 776], 40.00th=[ 835], 50.00th=[ 885], 60.00th=[ 944], | 70.00th=[ 1003], 80.00th=[ 1116], 90.00th=[ 1284], 95.00th=[ 1485], | 99.00th=[ 1737], 99.50th=[ 1787], 99.90th=[ 1905], 99.95th=[ 1989], | 99.99th=[ 2106] bw ( KiB/s): min= 7, max= 220, per=24.89%, avg=68.94, stdev=29.03, samples=292 iops : min= 1, max= 55, avg=16.78, stdev= 7.27, samples=292 lat (msec) : 250=0.82%, 500=2.73%, 750=20.70%, 1000=45.12%, 2000=30.59% lat (msec) : >=2000=0.04% cpu : usr=0.04%, sys=0.24%, ctx=1914, 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=277KiB/s (284kB/s), 69.3KiB/s-69.6KiB/s (70.0kB/s-71.3kB/s), io=40.0MiB (41.9MB), run=147042-147767msec 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=145540: Wed Aug 19 23:06:03 2026 read: IOPS=13, BW=52.7KiB/s (53.9kB/s)(5048KiB/95813msec) slat (usec): min=2232, max=61928, avg=12296.13, stdev=6797.42 clat (msec): min=11, max=1063, avg=374.95, stdev=100.63 lat (msec): min=17, max=1068, avg=387.25, stdev=101.79 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 241], 10.00th=[ 264], 20.00th=[ 296], | 30.00th=[ 326], 40.00th=[ 347], 50.00th=[ 368], 60.00th=[ 388], | 70.00th=[ 414], 80.00th=[ 447], 90.00th=[ 493], 95.00th=[ 542], | 99.00th=[ 651], 99.50th=[ 768], 99.90th=[ 995], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 128, per=25.23%, avg=52.48, stdev=22.50, samples=189 iops : min= 1, max= 32, avg=12.65, stdev= 5.66, samples=189 write: IOPS=13, BW=54.2KiB/s (55.5kB/s)(5192KiB/95813msec); 0 zone resets slat (usec): min=32, max=13484, avg=259.50, stdev=836.09 clat (msec): min=137, max=1814, avg=802.20, stdev=197.94 lat (msec): min=137, max=1814, avg=802.46, stdev=198.00 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 514], 10.00th=[ 575], 20.00th=[ 651], | 30.00th=[ 701], 40.00th=[ 735], 50.00th=[ 785], 60.00th=[ 827], | 70.00th=[ 885], 80.00th=[ 953], 90.00th=[ 1062], 95.00th=[ 1167], | 99.00th=[ 1334], 99.50th=[ 1469], 99.90th=[ 1720], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 112, per=24.91%, avg=54.06, stdev=20.89, samples=188 iops : min= 1, max= 28, avg=13.04, stdev= 5.29, samples=188 lat (msec) : 20=0.08%, 50=0.04%, 100=0.20%, 250=3.28%, 500=43.05% lat (msec) : 750=24.49%, 1000=21.09%, 2000=7.77% cpu : usr=0.10%, sys=0.65%, ctx=4836, 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=145541: Wed Aug 19 23:06:03 2026 read: IOPS=12, BW=51.8KiB/s (53.0kB/s)(4976KiB/96124msec) slat (usec): min=2390, max=48137, avg=12263.00, stdev=6617.69 clat (msec): min=9, max=732, avg=372.09, stdev=92.02 lat (msec): min=18, max=742, avg=384.36, stdev=92.97 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 243], 10.00th=[ 271], 20.00th=[ 300], | 30.00th=[ 321], 40.00th=[ 342], 50.00th=[ 363], 60.00th=[ 388], | 70.00th=[ 414], 80.00th=[ 447], 90.00th=[ 498], 95.00th=[ 531], | 99.00th=[ 609], 99.50th=[ 642], 99.90th=[ 701], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 127, per=24.57%, avg=51.12, stdev=24.38, samples=191 iops : min= 1, max= 31, avg=12.30, stdev= 6.12, samples=191 write: IOPS=13, BW=54.8KiB/s (56.1kB/s)(5264KiB/96124msec); 0 zone resets slat (usec): min=34, max=14878, avg=308.07, stdev=944.40 clat (msec): min=227, max=1375, avg=803.29, stdev=197.04 lat (msec): min=227, max=1375, avg=803.60, stdev=197.08 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 498], 10.00th=[ 575], 20.00th=[ 642], | 30.00th=[ 693], 40.00th=[ 743], 50.00th=[ 785], 60.00th=[ 827], | 70.00th=[ 885], 80.00th=[ 961], 90.00th=[ 1083], 95.00th=[ 1183], | 99.00th=[ 1301], 99.50th=[ 1318], 99.90th=[ 1351], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 7, max= 119, per=25.03%, avg=54.32, stdev=20.34, samples=190 iops : min= 1, max= 29, avg=13.11, stdev= 5.15, samples=190 lat (msec) : 10=0.04%, 50=0.16%, 100=0.20%, 250=2.85%, 500=43.71% lat (msec) : 750=23.67%, 1000=21.13%, 2000=8.24% cpu : usr=0.11%, sys=0.60%, ctx=4681, 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=145542: Wed Aug 19 23:06:03 2026 read: IOPS=12, BW=51.9KiB/s (53.2kB/s)(4984KiB/95992msec) slat (usec): min=2698, max=44163, avg=12295.01, stdev=6417.74 clat (msec): min=13, max=976, avg=375.03, stdev=97.55 lat (msec): min=20, max=986, avg=387.33, stdev=98.62 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 243], 10.00th=[ 264], 20.00th=[ 296], | 30.00th=[ 321], 40.00th=[ 342], 50.00th=[ 368], 60.00th=[ 388], | 70.00th=[ 418], 80.00th=[ 447], 90.00th=[ 493], 95.00th=[ 542], | 99.00th=[ 651], 99.50th=[ 709], 99.90th=[ 961], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 119, per=24.81%, avg=51.60, stdev=23.59, samples=190 iops : min= 1, max= 29, avg=12.43, stdev= 5.95, samples=190 write: IOPS=13, BW=54.8KiB/s (56.1kB/s)(5256KiB/95992msec); 0 zone resets slat (usec): min=31, max=15007, avg=319.40, stdev=1084.49 clat (msec): min=98, max=1462, avg=799.54, stdev=194.35 lat (msec): min=98, max=1462, avg=799.86, stdev=194.37 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 514], 10.00th=[ 575], 20.00th=[ 651], | 30.00th=[ 701], 40.00th=[ 735], 50.00th=[ 768], 60.00th=[ 818], | 70.00th=[ 877], 80.00th=[ 953], 90.00th=[ 1070], 95.00th=[ 1167], | 99.00th=[ 1284], 99.50th=[ 1318], 99.90th=[ 1452], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 7, max= 112, per=24.92%, avg=54.08, stdev=20.57, samples=190 iops : min= 1, max= 28, avg=13.04, stdev= 5.17, samples=190 lat (msec) : 20=0.08%, 50=0.12%, 100=0.20%, 250=2.77%, 500=43.09% lat (msec) : 750=25.39%, 1000=20.39%, 2000=7.97% cpu : usr=0.09%, sys=0.60%, ctx=4583, 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=145543: Wed Aug 19 23:06:03 2026 read: IOPS=13, BW=53.2KiB/s (54.5kB/s)(5060KiB/95146msec) slat (usec): min=34, max=55462, avg=12169.84, stdev=6794.94 clat (msec): min=9, max=1159, avg=373.27, stdev=106.78 lat (msec): min=15, max=1173, avg=385.45, stdev=107.80 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 236], 10.00th=[ 259], 20.00th=[ 292], | 30.00th=[ 321], 40.00th=[ 342], 50.00th=[ 368], 60.00th=[ 388], | 70.00th=[ 414], 80.00th=[ 451], 90.00th=[ 498], 95.00th=[ 535], | 99.00th=[ 667], 99.50th=[ 735], 99.90th=[ 1150], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 119, per=25.57%, avg=53.18, stdev=21.51, samples=187 iops : min= 1, max= 29, avg=12.82, stdev= 5.41, samples=187 write: IOPS=13, BW=54.4KiB/s (55.7kB/s)(5180KiB/95146msec); 0 zone resets slat (usec): min=31, max=23540, avg=241.39, stdev=945.13 clat (msec): min=167, max=1883, avg=797.53, stdev=208.06 lat (msec): min=167, max=1883, avg=797.78, stdev=208.09 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 506], 10.00th=[ 575], 20.00th=[ 642], | 30.00th=[ 693], 40.00th=[ 735], 50.00th=[ 776], 60.00th=[ 818], | 70.00th=[ 869], 80.00th=[ 944], 90.00th=[ 1062], 95.00th=[ 1167], | 99.00th=[ 1385], 99.50th=[ 1620], 99.90th=[ 1804], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 15, max= 112, per=24.83%, avg=53.89, stdev=18.22, samples=188 iops : min= 3, max= 28, avg=13.00, stdev= 4.62, samples=188 lat (msec) : 10=0.04%, 20=0.04%, 50=0.12%, 100=0.31%, 250=3.79% lat (msec) : 500=42.66%, 750=24.41%, 1000=20.74%, 2000=7.89% cpu : usr=0.12%, sys=0.63%, ctx=4536, 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-53.2KiB/s (53.0kB/s-54.5kB/s), io=19.6MiB (20.5MB), run=95146-96124msec WRITE: bw=217KiB/s (223kB/s), 54.2KiB/s-54.8KiB/s (55.5kB/s-56.1kB/s), io=20.4MiB (21.4MB), run=95146-96124msec 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=145561: Wed Aug 19 23:06:12 2026 read: IOPS=1, BW=67.9MiB/s (71.2MB/s)(40.0MiB/589msec) slat (nsec): min=23591k, max=23591k, avg=23590808.00, stdev= 0.00 clat (nsec): min=519603k, max=519603k, avg=519602544.00, stdev= 0.00 lat (nsec): min=543198k, max=543198k, avg=543197825.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 518], 10.00th=[ 518], 20.00th=[ 518], | 30.00th=[ 518], 40.00th=[ 518], 50.00th=[ 518], 60.00th=[ 518], | 70.00th=[ 518], 80.00th=[ 518], 90.00th=[ 518], 95.00th=[ 518], | 99.00th=[ 518], 99.50th=[ 518], 99.90th=[ 518], 99.95th=[ 518], | 99.99th=[ 518] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=2.21%, 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=67.9MiB/s (71.2MB/s), 67.9MiB/s-67.9MiB/s (71.2MB/s-71.2MB/s), io=40.0MiB (41.9MB), run=589-589msec 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