== sanity test 398c: run fio to test AIO ================= 08:21:58 (1787142118) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.531187 s, 79.0 MB/s osc.lustre-OST0000-osc-ffff9ba81da24000.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=145165: Wed Aug 19 08:24:40 2026 write: IOPS=16, BW=67.9KiB/s (69.6kB/s)(10.0MiB/150713msec); 0 zone resets slat (usec): min=36, max=18351, avg=223.17, stdev=728.02 clat (msec): min=388, max=2677, avg=940.61, stdev=263.31 lat (msec): min=388, max=2677, avg=940.84, stdev=263.32 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 609], 10.00th=[ 651], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 902], 60.00th=[ 953], | 70.00th=[ 1028], 80.00th=[ 1116], 90.00th=[ 1267], 95.00th=[ 1401], | 99.00th=[ 1770], 99.50th=[ 2123], 99.90th=[ 2400], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 8, max= 152, per=25.60%, avg=69.36, stdev=31.31, samples=291 iops : min= 2, max= 38, avg=16.91, stdev= 7.88, samples=291 lat (msec) : 500=1.80%, 750=21.48%, 1000=42.70%, 2000=33.40%, >=2000=0.62% cpu : usr=0.03%, sys=0.27%, ctx=2076, 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=145166: Wed Aug 19 08:24:40 2026 write: IOPS=17, BW=68.1KiB/s (69.8kB/s)(10.0MiB/150289msec); 0 zone resets slat (usec): min=35, max=15463, avg=258.81, stdev=908.65 clat (msec): min=157, max=2264, avg=938.51, stdev=259.70 lat (msec): min=158, max=2264, avg=938.77, stdev=259.73 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 592], 10.00th=[ 659], 20.00th=[ 743], | 30.00th=[ 802], 40.00th=[ 860], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1028], 80.00th=[ 1099], 90.00th=[ 1250], 95.00th=[ 1401], | 99.00th=[ 1821], 99.50th=[ 1938], 99.90th=[ 2165], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 15, max= 168, per=26.22%, avg=71.05, stdev=30.59, samples=284 iops : min= 3, max= 42, avg=17.33, stdev= 7.69, samples=284 lat (msec) : 250=0.08%, 500=2.73%, 750=18.83%, 1000=44.92%, 2000=33.09% lat (msec) : >=2000=0.35% cpu : usr=0.04%, sys=0.27%, ctx=2312, 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=145167: Wed Aug 19 08:24:40 2026 write: IOPS=16, BW=67.0KiB/s (69.6kB/s)(10.0MiB/150602msec); 0 zone resets slat (usec): min=34, max=12044, avg=220.77, stdev=643.88 clat (msec): min=373, max=2598, avg=939.96, stdev=266.91 lat (msec): min=373, max=2598, avg=940.18, stdev=266.91 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 584], 10.00th=[ 642], 20.00th=[ 735], | 30.00th=[ 802], 40.00th=[ 869], 50.00th=[ 911], 60.00th=[ 961], | 70.00th=[ 1011], 80.00th=[ 1116], 90.00th=[ 1250], 95.00th=[ 1401], | 99.00th=[ 1787], 99.50th=[ 2198], 99.90th=[ 2500], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 7, max= 128, per=26.12%, avg=70.80, stdev=32.47, samples=285 iops : min= 1, max= 32, avg=17.27, stdev= 8.18, samples=285 lat (msec) : 500=2.70%, 750=19.02%, 1000=45.98%, 2000=31.68%, >=2000=0.62% cpu : usr=0.05%, sys=0.25%, ctx=2152, 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=145168: Wed Aug 19 08:24:40 2026 write: IOPS=16, BW=67.9KiB/s (69.5kB/s)(10.0MiB/150793msec); 0 zone resets slat (usec): min=35, max=16416, avg=251.09, stdev=839.63 clat (msec): min=98, max=2567, avg=941.03, stdev=259.98 lat (msec): min=99, max=2568, avg=941.28, stdev=259.99 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 600], 10.00th=[ 667], 20.00th=[ 735], | 30.00th=[ 802], 40.00th=[ 860], 50.00th=[ 902], 60.00th=[ 961], | 70.00th=[ 1028], 80.00th=[ 1116], 90.00th=[ 1250], 95.00th=[ 1435], | 99.00th=[ 1754], 99.50th=[ 2005], 99.90th=[ 2232], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 7, max= 151, per=25.25%, avg=68.42, stdev=28.68, samples=295 iops : min= 1, max= 37, avg=16.68, stdev= 7.21, samples=295 lat (msec) : 100=0.04%, 250=0.04%, 500=1.45%, 750=20.82%, 1000=43.24% lat (msec) : 2000=33.95%, >=2000=0.47% cpu : usr=0.04%, sys=0.25%, ctx=1969, 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=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=272KiB/s (278kB/s), 67.9KiB/s-68.1KiB/s (69.5kB/s-69.8kB/s), io=40.0MiB (41.9MB), run=150289-150793msec 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=145200: Wed Aug 19 08:26:25 2026 read: IOPS=13, BW=52.9KiB/s (54.2kB/s)(5048KiB/95357msec) slat (usec): min=2735, max=47541, avg=12898.12, stdev=6689.61 clat (msec): min=46, max=723, avg=362.12, stdev=88.89 lat (msec): min=58, max=734, avg=375.02, stdev=89.88 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 224], 10.00th=[ 257], 20.00th=[ 288], | 30.00th=[ 317], 40.00th=[ 338], 50.00th=[ 359], 60.00th=[ 380], | 70.00th=[ 401], 80.00th=[ 430], 90.00th=[ 472], 95.00th=[ 514], | 99.00th=[ 600], 99.50th=[ 642], 99.90th=[ 684], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 150, per=25.08%, avg=52.66, stdev=23.30, samples=188 iops : min= 1, max= 37, avg=12.69, stdev= 5.85, samples=188 write: IOPS=13, BW=54.4KiB/s (55.8kB/s)(5192KiB/95357msec); 0 zone resets slat (usec): min=38, max=13969, avg=271.75, stdev=671.33 clat (msec): min=188, max=1547, avg=807.46, stdev=203.46 lat (msec): min=188, max=1548, avg=807.73, stdev=203.45 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 468], 10.00th=[ 558], 20.00th=[ 651], | 30.00th=[ 709], 40.00th=[ 760], 50.00th=[ 802], 60.00th=[ 844], | 70.00th=[ 902], 80.00th=[ 969], 90.00th=[ 1083], 95.00th=[ 1150], | 99.00th=[ 1351], 99.50th=[ 1435], 99.90th=[ 1536], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 7, max= 139, per=24.61%, avg=53.89, stdev=21.71, samples=189 iops : min= 1, max= 34, avg=12.99, stdev= 5.45, samples=189 lat (msec) : 50=0.04%, 100=0.16%, 250=4.18%, 500=45.23%, 750=19.53% lat (msec) : 1000=22.19%, 2000=8.67% cpu : usr=0.12%, sys=0.72%, ctx=4841, 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=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=145201: Wed Aug 19 08:26:25 2026 read: IOPS=13, BW=52.2KiB/s (53.4kB/s)(4976KiB/95389msec) slat (usec): min=2145, max=50729, avg=13258.42, stdev=6993.39 clat (msec): min=21, max=703, avg=360.19, stdev=86.18 lat (msec): min=29, max=719, avg=373.46, stdev=87.37 clat percentiles (msec): | 1.00th=[ 105], 5.00th=[ 226], 10.00th=[ 262], 20.00th=[ 296], | 30.00th=[ 317], 40.00th=[ 338], 50.00th=[ 359], 60.00th=[ 380], | 70.00th=[ 401], 80.00th=[ 422], 90.00th=[ 464], 95.00th=[ 506], | 99.00th=[ 575], 99.50th=[ 625], 99.90th=[ 659], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 111, per=24.71%, avg=51.89, stdev=22.84, samples=187 iops : min= 1, max= 27, avg=12.49, stdev= 5.70, samples=187 write: IOPS=13, BW=55.2KiB/s (56.5kB/s)(5264KiB/95389msec); 0 zone resets slat (usec): min=38, max=13634, avg=290.72, stdev=773.22 clat (msec): min=174, max=1540, avg=804.58, stdev=206.93 lat (msec): min=175, max=1541, avg=804.87, stdev=206.94 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 464], 10.00th=[ 542], 20.00th=[ 642], | 30.00th=[ 709], 40.00th=[ 760], 50.00th=[ 802], 60.00th=[ 844], | 70.00th=[ 894], 80.00th=[ 961], 90.00th=[ 1070], 95.00th=[ 1167], | 99.00th=[ 1318], 99.50th=[ 1401], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 8, max= 144, per=24.97%, avg=54.68, stdev=21.29, samples=188 iops : min= 2, max= 36, avg=13.19, stdev= 5.36, samples=188 lat (msec) : 50=0.08%, 100=0.39%, 250=3.63%, 500=45.43%, 750=18.91% lat (msec) : 1000=23.24%, 2000=8.32% cpu : usr=0.10%, sys=0.75%, ctx=4968, 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=145202: Wed Aug 19 08:26:25 2026 read: IOPS=13, BW=52.3KiB/s (53.5kB/s)(4984KiB/95359msec) slat (usec): min=100, max=68937, avg=13261.02, stdev=7525.20 clat (msec): min=14, max=664, avg=361.34, stdev=85.23 lat (msec): min=19, max=678, avg=374.61, stdev=86.69 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 234], 10.00th=[ 262], 20.00th=[ 292], | 30.00th=[ 317], 40.00th=[ 342], 50.00th=[ 359], 60.00th=[ 380], | 70.00th=[ 401], 80.00th=[ 426], 90.00th=[ 468], 95.00th=[ 502], | 99.00th=[ 592], 99.50th=[ 625], 99.90th=[ 659], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 112, per=24.69%, avg=51.84, stdev=22.84, samples=189 iops : min= 1, max= 28, avg=12.48, stdev= 5.68, samples=189 write: IOPS=13, BW=55.1KiB/s (56.4kB/s)(5256KiB/95359msec); 0 zone resets slat (usec): min=44, max=18938, avg=333.17, stdev=1078.37 clat (msec): min=177, max=1537, avg=804.88, stdev=210.39 lat (msec): min=177, max=1538, avg=805.22, stdev=210.38 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 447], 10.00th=[ 535], 20.00th=[ 642], | 30.00th=[ 701], 40.00th=[ 760], 50.00th=[ 810], 60.00th=[ 860], | 70.00th=[ 911], 80.00th=[ 969], 90.00th=[ 1070], 95.00th=[ 1150], | 99.00th=[ 1334], 99.50th=[ 1401], 99.90th=[ 1519], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7, max= 128, per=24.80%, avg=54.31, stdev=21.36, samples=189 iops : min= 1, max= 32, avg=13.10, stdev= 5.39, samples=189 lat (msec) : 20=0.04%, 50=0.16%, 100=0.16%, 250=3.67%, 500=46.21% lat (msec) : 750=17.85%, 1000=23.36%, 2000=8.55% cpu : usr=0.11%, sys=0.75%, ctx=5075, 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=145203: Wed Aug 19 08:26:25 2026 read: IOPS=13, BW=53.2KiB/s (54.5kB/s)(5060KiB/95150msec) slat (usec): min=2567, max=54686, avg=13194.33, stdev=7231.87 clat (msec): min=11, max=744, avg=365.61, stdev=87.97 lat (msec): min=25, max=755, avg=378.81, stdev=89.47 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 232], 10.00th=[ 262], 20.00th=[ 296], | 30.00th=[ 321], 40.00th=[ 342], 50.00th=[ 368], 60.00th=[ 384], | 70.00th=[ 405], 80.00th=[ 435], 90.00th=[ 472], 95.00th=[ 514], | 99.00th=[ 592], 99.50th=[ 617], 99.90th=[ 726], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 135, per=25.41%, avg=53.37, stdev=21.01, samples=186 iops : min= 1, max= 33, avg=12.87, stdev= 5.28, samples=186 write: IOPS=13, BW=54.4KiB/s (55.7kB/s)(5180KiB/95150msec); 0 zone resets slat (usec): min=56, max=16786, avg=299.58, stdev=881.64 clat (msec): min=210, max=1540, avg=802.67, stdev=198.22 lat (msec): min=210, max=1541, avg=802.98, stdev=198.25 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 468], 10.00th=[ 550], 20.00th=[ 651], | 30.00th=[ 709], 40.00th=[ 751], 50.00th=[ 802], 60.00th=[ 844], | 70.00th=[ 894], 80.00th=[ 961], 90.00th=[ 1053], 95.00th=[ 1133], | 99.00th=[ 1318], 99.50th=[ 1368], 99.90th=[ 1536], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 15, max= 119, per=24.57%, avg=53.80, stdev=19.58, samples=189 iops : min= 3, max= 29, avg=12.97, stdev= 4.92, samples=189 lat (msec) : 20=0.08%, 50=0.04%, 100=0.16%, 250=3.75%, 500=45.74% lat (msec) : 750=19.73%, 1000=22.81%, 2000=7.70% cpu : usr=0.10%, sys=0.68%, ctx=4993, 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=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=210KiB/s (215kB/s), 52.2KiB/s-53.2KiB/s (53.4kB/s-54.5kB/s), io=19.6MiB (20.5MB), run=95150-95389msec WRITE: bw=219KiB/s (224kB/s), 54.4KiB/s-55.2KiB/s (55.7kB/s-56.5kB/s), io=20.4MiB (21.4MB), run=95150-95389msec 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=145221: Wed Aug 19 08:26:34 2026 read: IOPS=2, BW=104MiB/s (110MB/s)(40.0MiB/383msec) slat (nsec): min=25335k, max=25335k, avg=25334840.00, stdev= 0.00 clat (nsec): min=339437k, max=339437k, avg=339437365.00, stdev= 0.00 lat (nsec): min=364777k, max=364777k, avg=364776690.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 338], 10.00th=[ 338], 20.00th=[ 338], | 30.00th=[ 338], 40.00th=[ 338], 50.00th=[ 338], 60.00th=[ 338], | 70.00th=[ 338], 80.00th=[ 338], 90.00th=[ 338], 95.00th=[ 338], | 99.00th=[ 338], 99.50th=[ 338], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=3.40%, ctx=28, 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=104MiB/s (110MB/s), 104MiB/s-104MiB/s (110MB/s-110MB/s), io=40.0MiB (41.9MB), run=383-383msec 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