== sanity test 398c: run fio to test AIO ================= 03:15:44 (1790925344) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.512214 s, 81.9 MB/s osc.lustre-OST0000-osc-ffff9ae6907a3000.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=145688: Fri Oct 2 03:18:34 2026 write: IOPS=15, BW=63.0KiB/s (65.5kB/s)(10.0MiB/160106msec); 0 zone resets slat (usec): min=21, max=19821, avg=194.01, stdev=888.50 clat (msec): min=94, max=2583, avg=1000.13, stdev=301.07 lat (msec): min=94, max=2583, avg=1000.32, stdev=301.05 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 584], 10.00th=[ 701], 20.00th=[ 802], | 30.00th=[ 860], 40.00th=[ 919], 50.00th=[ 969], 60.00th=[ 1028], | 70.00th=[ 1099], 80.00th=[ 1183], 90.00th=[ 1334], 95.00th=[ 1519], | 99.00th=[ 2022], 99.50th=[ 2333], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2567] bw ( KiB/s): min= 7, max= 183, per=24.85%, avg=63.37, stdev=28.22, samples=318 iops : min= 1, max= 45, avg=15.47, stdev= 7.06, samples=318 lat (msec) : 100=0.04%, 250=0.66%, 500=2.85%, 750=10.70%, 1000=40.47% lat (msec) : 2000=44.26%, >=2000=1.02% cpu : usr=0.06%, sys=0.21%, ctx=2122, 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=145689: Fri Oct 2 03:18:34 2026 write: IOPS=15, BW=63.9KiB/s (65.4kB/s)(10.0MiB/160251msec); 0 zone resets slat (usec): min=22, max=16332, avg=197.47, stdev=895.70 clat (msec): min=252, max=2674, avg=1000.27, stdev=294.25 lat (msec): min=253, max=2674, avg=1000.46, stdev=294.26 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 609], 10.00th=[ 693], 20.00th=[ 793], | 30.00th=[ 860], 40.00th=[ 919], 50.00th=[ 978], 60.00th=[ 1036], | 70.00th=[ 1099], 80.00th=[ 1200], 90.00th=[ 1351], 95.00th=[ 1536], | 99.00th=[ 1871], 99.50th=[ 2232], 99.90th=[ 2567], 99.95th=[ 2601], | 99.99th=[ 2668] bw ( KiB/s): min= 7, max= 255, per=25.29%, avg=64.48, stdev=32.11, samples=313 iops : min= 1, max= 63, avg=15.75, stdev= 8.05, samples=313 lat (msec) : 500=3.24%, 750=12.23%, 1000=38.24%, 2000=45.59%, >=2000=0.70% cpu : usr=0.04%, sys=0.19%, ctx=1807, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=145690: Fri Oct 2 03:18:34 2026 write: IOPS=15, BW=63.9KiB/s (65.4kB/s)(10.0MiB/160255msec); 0 zone resets slat (usec): min=22, max=21801, avg=165.25, stdev=681.53 clat (msec): min=220, max=2672, avg=1000.31, stdev=294.62 lat (msec): min=221, max=2672, avg=1000.48, stdev=294.64 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 609], 10.00th=[ 693], 20.00th=[ 785], | 30.00th=[ 852], 40.00th=[ 911], 50.00th=[ 969], 60.00th=[ 1036], | 70.00th=[ 1099], 80.00th=[ 1200], 90.00th=[ 1334], 95.00th=[ 1502], | 99.00th=[ 2005], 99.50th=[ 2232], 99.90th=[ 2433], 99.95th=[ 2433], | 99.99th=[ 2668] bw ( KiB/s): min= 8, max= 151, per=25.04%, avg=63.85, stdev=29.74, samples=316 iops : min= 2, max= 37, avg=15.59, stdev= 7.44, samples=316 lat (msec) : 250=0.04%, 500=3.24%, 750=11.09%, 1000=40.62%, 2000=44.18% lat (msec) : >=2000=0.82% cpu : usr=0.05%, sys=0.19%, ctx=1746, 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=145691: Fri Oct 2 03:18:34 2026 write: IOPS=15, BW=63.9KiB/s (65.5kB/s)(10.0MiB/160172msec); 0 zone resets slat (usec): min=21, max=18559, avg=180.49, stdev=800.28 clat (msec): min=136, max=2550, avg=999.69, stdev=296.02 lat (msec): min=137, max=2550, avg=999.87, stdev=296.03 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 584], 10.00th=[ 693], 20.00th=[ 793], | 30.00th=[ 869], 40.00th=[ 911], 50.00th=[ 978], 60.00th=[ 1036], | 70.00th=[ 1099], 80.00th=[ 1183], 90.00th=[ 1334], 95.00th=[ 1519], | 99.00th=[ 2022], 99.50th=[ 2165], 99.90th=[ 2467], 99.95th=[ 2467], | 99.99th=[ 2567] bw ( KiB/s): min= 8, max= 207, per=24.88%, avg=63.45, stdev=27.14, samples=318 iops : min= 2, max= 51, avg=15.49, stdev= 6.79, samples=318 lat (msec) : 250=0.31%, 500=2.85%, 750=11.84%, 1000=39.14%, 2000=44.84% lat (msec) : >=2000=1.02% cpu : usr=0.04%, sys=0.18%, ctx=1654, 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=256KiB/s (262kB/s), 63.9KiB/s-63.0KiB/s (65.4kB/s-65.5kB/s), io=40.0MiB (41.9MB), run=160106-160255msec 6% of I/O are 1-page (PAGE_SIZE=4096), max 50% 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=145723: Fri Oct 2 03:20:25 2026 read: IOPS=12, BW=49.0KiB/s (51.2kB/s)(5048KiB/101023msec) slat (usec): min=2760, max=59185, avg=13304.07, stdev=7043.77 clat (msec): min=19, max=939, avg=390.29, stdev=93.54 lat (msec): min=22, max=957, avg=403.60, stdev=94.46 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 264], 10.00th=[ 288], 20.00th=[ 321], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 384], 60.00th=[ 405], | 70.00th=[ 422], 80.00th=[ 456], 90.00th=[ 493], 95.00th=[ 542], | 99.00th=[ 693], 99.50th=[ 810], 99.90th=[ 927], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 112, per=25.05%, avg=49.59, stdev=21.89, samples=200 iops : min= 1, max= 28, avg=11.96, stdev= 5.50, samples=200 write: IOPS=12, BW=51.4KiB/s (52.6kB/s)(5192KiB/101023msec); 0 zone resets slat (usec): min=34, max=14733, avg=233.78, stdev=764.75 clat (msec): min=306, max=1960, avg=850.17, stdev=232.70 lat (msec): min=307, max=1960, avg=850.40, stdev=232.69 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 514], 10.00th=[ 584], 20.00th=[ 659], | 30.00th=[ 726], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 885], | 70.00th=[ 961], 80.00th=[ 1036], 90.00th=[ 1133], 95.00th=[ 1234], | 99.00th=[ 1485], 99.50th=[ 1838], 99.90th=[ 1938], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 8, max= 104, per=24.72%, avg=50.93, stdev=19.10, samples=200 iops : min= 2, max= 26, avg=12.29, stdev= 4.81, samples=200 lat (msec) : 20=0.04%, 50=0.08%, 100=0.20%, 250=1.25%, 500=45.59% lat (msec) : 750=19.96%, 1000=20.31%, 2000=12.58% cpu : usr=0.10%, sys=0.59%, ctx=4846, 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=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=145724: Fri Oct 2 03:20:25 2026 read: IOPS=12, BW=49.3KiB/s (50.4kB/s)(4976KiB/101024msec) slat (usec): min=3065, max=49953, avg=13195.40, stdev=7308.89 clat (msec): min=28, max=935, avg=389.14, stdev=91.99 lat (msec): min=36, max=944, avg=402.34, stdev=92.77 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 268], 10.00th=[ 288], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 401], | 70.00th=[ 426], 80.00th=[ 456], 90.00th=[ 493], 95.00th=[ 542], | 99.00th=[ 651], 99.50th=[ 709], 99.90th=[ 919], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 120, per=24.67%, avg=48.85, stdev=23.08, samples=200 iops : min= 1, max= 30, avg=11.77, stdev= 5.81, samples=200 write: IOPS=13, BW=52.1KiB/s (53.4kB/s)(5264KiB/101024msec); 0 zone resets slat (usec): min=35, max=14493, avg=247.78, stdev=913.61 clat (msec): min=183, max=1964, avg=845.76, stdev=238.45 lat (msec): min=183, max=1964, avg=846.01, stdev=238.46 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 481], 10.00th=[ 558], 20.00th=[ 659], | 30.00th=[ 718], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 885], | 70.00th=[ 961], 80.00th=[ 1036], 90.00th=[ 1150], 95.00th=[ 1217], | 99.00th=[ 1502], 99.50th=[ 1703], 99.90th=[ 1938], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min= 7, max= 119, per=24.95%, avg=51.40, stdev=19.63, samples=201 iops : min= 1, max= 29, avg=12.41, stdev= 4.95, samples=201 lat (msec) : 50=0.16%, 100=0.12%, 250=1.29%, 500=45.47%, 750=20.08% lat (msec) : 1000=20.20%, 2000=12.70% cpu : usr=0.08%, sys=0.60%, ctx=4957, 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=145725: Fri Oct 2 03:20:25 2026 read: IOPS=12, BW=49.4KiB/s (50.6kB/s)(4984KiB/100910msec) slat (usec): min=2935, max=47724, avg=13128.50, stdev=7187.30 clat (msec): min=30, max=900, avg=388.18, stdev=92.99 lat (msec): min=42, max=921, avg=401.31, stdev=93.35 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 262], 10.00th=[ 288], 20.00th=[ 321], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 401], | 70.00th=[ 426], 80.00th=[ 456], 90.00th=[ 502], 95.00th=[ 542], | 99.00th=[ 634], 99.50th=[ 760], 99.90th=[ 827], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 120, per=25.08%, avg=49.67, stdev=21.34, samples=198 iops : min= 1, max= 30, avg=11.98, stdev= 5.37, samples=198 write: IOPS=13, BW=52.1KiB/s (53.3kB/s)(5256KiB/100910msec); 0 zone resets slat (usec): min=30, max=7895, avg=185.97, stdev=451.64 clat (msec): min=211, max=1907, avg=845.91, stdev=239.01 lat (msec): min=211, max=1907, avg=846.09, stdev=238.99 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 485], 10.00th=[ 558], 20.00th=[ 651], | 30.00th=[ 709], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 894], | 70.00th=[ 961], 80.00th=[ 1036], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1502], 99.50th=[ 1821], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 7, max= 112, per=24.92%, avg=51.34, stdev=21.00, samples=200 iops : min= 1, max= 28, avg=12.40, stdev= 5.32, samples=200 lat (msec) : 50=0.08%, 100=0.51%, 250=1.48%, 500=44.65%, 750=20.23% lat (msec) : 1000=19.92%, 2000=13.12% cpu : usr=0.10%, sys=0.63%, ctx=4846, 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=145726: Fri Oct 2 03:20:25 2026 read: IOPS=12, BW=50.1KiB/s (51.3kB/s)(5060KiB/101014msec) slat (usec): min=54, max=507392, avg=14733.78, stdev=24484.51 clat (msec): min=15, max=1504, avg=396.39, stdev=117.85 lat (msec): min=19, max=1519, avg=411.13, stdev=121.73 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 266], 10.00th=[ 292], 20.00th=[ 321], | 30.00th=[ 347], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 405], | 70.00th=[ 430], 80.00th=[ 464], 90.00th=[ 514], 95.00th=[ 567], | 99.00th=[ 735], 99.50th=[ 919], 99.90th=[ 1485], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 7, max= 120, per=25.21%, avg=49.91, stdev=20.81, samples=199 iops : min= 1, max= 30, avg=12.04, stdev= 5.26, samples=199 write: IOPS=12, BW=51.3KiB/s (52.5kB/s)(5180KiB/101014msec); 0 zone resets slat (usec): min=29, max=17160, avg=217.98, stdev=748.01 clat (msec): min=119, max=1945, avg=845.65, stdev=245.02 lat (msec): min=119, max=1945, avg=845.87, stdev=245.02 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 472], 10.00th=[ 558], 20.00th=[ 651], | 30.00th=[ 718], 40.00th=[ 776], 50.00th=[ 827], 60.00th=[ 894], | 70.00th=[ 969], 80.00th=[ 1045], 90.00th=[ 1133], 95.00th=[ 1217], | 99.00th=[ 1569], 99.50th=[ 1720], 99.90th=[ 1938], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 7, max= 111, per=24.79%, avg=51.08, stdev=21.24, samples=199 iops : min= 1, max= 27, avg=12.33, stdev= 5.33, samples=199 lat (msec) : 20=0.08%, 50=0.27%, 100=0.20%, 250=1.52%, 500=44.77% lat (msec) : 750=20.39%, 1000=20.08%, 2000=12.70% cpu : usr=0.11%, sys=0.60%, ctx=4879, 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=199KiB/s (203kB/s), 49.3KiB/s-50.1KiB/s (50.4kB/s-51.3kB/s), io=19.6MiB (20.5MB), run=100910-101024msec WRITE: bw=207KiB/s (212kB/s), 51.3KiB/s-52.1KiB/s (52.5kB/s-53.4kB/s), io=20.4MiB (21.4MB), run=100910-101024msec 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=145745: Fri Oct 2 03:20:37 2026 read: IOPS=1, BW=55.8MiB/s (58.5MB/s)(40.0MiB/717msec) slat (nsec): min=31060k, max=31060k, avg=31059757.00, stdev= 0.00 clat (nsec): min=638876k, max=638876k, avg=638875991.00, stdev= 0.00 lat (nsec): min=669939k, max=669939k, avg=669939298.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 642], 5.00th=[ 642], 10.00th=[ 642], 20.00th=[ 642], | 30.00th=[ 642], 40.00th=[ 642], 50.00th=[ 642], 60.00th=[ 642], | 70.00th=[ 642], 80.00th=[ 642], 90.00th=[ 642], 95.00th=[ 642], | 99.00th=[ 642], 99.50th=[ 642], 99.90th=[ 642], 99.95th=[ 642], | 99.99th=[ 642] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.53%, ctx=27, majf=0, minf=8 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=55.8MiB/s (58.5MB/s), 55.8MiB/s-55.8MiB/s (58.5MB/s-58.5MB/s), io=40.0MiB (41.9MB), run=717-717msec 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