== sanity test 398c: run fio to test AIO ================= 22:17:57 (1787710677) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.431888 s, 97.1 MB/s osc.lustre-OST0000-osc-ffff89e570a52000.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=145313: Tue Aug 25 22:20:55 2026 write: IOPS=15, BW=60.7KiB/s (62.2kB/s)(10.0MiB/168699msec); 0 zone resets slat (usec): min=22, max=14594, avg=291.86, stdev=1010.98 clat (msec): min=162, max=2664, avg=1053.64, stdev=307.96 lat (msec): min=162, max=2664, avg=1053.93, stdev=307.95 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 634], 10.00th=[ 718], 20.00th=[ 827], | 30.00th=[ 894], 40.00th=[ 953], 50.00th=[ 1036], 60.00th=[ 1116], | 70.00th=[ 1183], 80.00th=[ 1267], 90.00th=[ 1418], 95.00th=[ 1569], | 99.00th=[ 2089], 99.50th=[ 2232], 99.90th=[ 2534], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 7, max= 215, per=25.41%, avg=61.48, stdev=29.49, samples=327 iops : min= 1, max= 53, avg=14.89, stdev= 7.38, samples=327 lat (msec) : 250=0.62%, 500=2.58%, 750=8.91%, 1000=33.71%, 2000=52.89% lat (msec) : >=2000=1.29% cpu : usr=0.06%, sys=0.23%, ctx=1768, 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=145314: Tue Aug 25 22:20:55 2026 write: IOPS=15, BW=60.6KiB/s (62.1kB/s)(10.0MiB/168946msec); 0 zone resets slat (usec): min=23, max=21006, avg=284.42, stdev=967.17 clat (msec): min=306, max=2601, avg=1054.77, stdev=306.18 lat (msec): min=306, max=2601, avg=1055.05, stdev=306.17 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 634], 10.00th=[ 726], 20.00th=[ 827], | 30.00th=[ 894], 40.00th=[ 953], 50.00th=[ 1020], 60.00th=[ 1099], | 70.00th=[ 1183], 80.00th=[ 1284], 90.00th=[ 1435], 95.00th=[ 1569], | 99.00th=[ 2039], 99.50th=[ 2333], 99.90th=[ 2601], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 7, max= 135, per=24.74%, avg=59.88, stdev=25.48, samples=336 iops : min= 1, max= 33, avg=14.49, stdev= 6.40, samples=336 lat (msec) : 500=2.50%, 750=9.26%, 1000=35.43%, 2000=51.80%, >=2000=1.02% cpu : usr=0.05%, sys=0.24%, ctx=2024, 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=145315: Tue Aug 25 22:20:55 2026 write: IOPS=15, BW=60.6KiB/s (62.1kB/s)(10.0MiB/168954msec); 0 zone resets slat (usec): min=27, max=26923, avg=275.86, stdev=1136.64 clat (msec): min=291, max=2615, avg=1054.68, stdev=306.94 lat (msec): min=291, max=2615, avg=1054.96, stdev=306.96 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 600], 10.00th=[ 701], 20.00th=[ 827], | 30.00th=[ 902], 40.00th=[ 961], 50.00th=[ 1028], 60.00th=[ 1099], | 70.00th=[ 1183], 80.00th=[ 1267], 90.00th=[ 1435], 95.00th=[ 1569], | 99.00th=[ 2089], 99.50th=[ 2232], 99.90th=[ 2534], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 7, max= 128, per=26.07%, avg=63.09, stdev=32.48, samples=319 iops : min= 1, max= 32, avg=15.30, stdev= 8.13, samples=319 lat (msec) : 500=2.85%, 750=10.04%, 1000=33.48%, 2000=52.27%, >=2000=1.37% cpu : usr=0.04%, sys=0.23%, ctx=1766, 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=145316: Tue Aug 25 22:20:55 2026 write: IOPS=15, BW=60.7KiB/s (62.1kB/s)(10.0MiB/168819msec); 0 zone resets slat (usec): min=28, max=14989, avg=270.41, stdev=875.10 clat (msec): min=65, max=2555, avg=1054.08, stdev=309.93 lat (msec): min=66, max=2555, avg=1054.35, stdev=309.91 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 625], 10.00th=[ 726], 20.00th=[ 827], | 30.00th=[ 885], 40.00th=[ 953], 50.00th=[ 1028], 60.00th=[ 1099], | 70.00th=[ 1200], 80.00th=[ 1284], 90.00th=[ 1435], 95.00th=[ 1586], | 99.00th=[ 1938], 99.50th=[ 2333], 99.90th=[ 2534], 99.95th=[ 2534], | 99.99th=[ 2567] bw ( KiB/s): min= 7, max= 215, per=24.74%, avg=59.87, stdev=29.72, samples=336 iops : min= 1, max= 53, avg=14.49, stdev= 7.45, samples=336 lat (msec) : 100=0.04%, 250=0.04%, 500=2.73%, 750=9.10%, 1000=35.66% lat (msec) : 2000=51.48%, >=2000=0.94% cpu : usr=0.05%, sys=0.23%, ctx=1852, 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=242KiB/s (248kB/s), 60.6KiB/s-60.7KiB/s (62.1kB/s-62.2kB/s), io=40.0MiB (41.9MB), run=168699-168954msec 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=145350: Tue Aug 25 22:22:47 2026 read: IOPS=12, BW=48.6KiB/s (49.7kB/s)(5048KiB/103930msec) slat (usec): min=3245, max=49698, avg=13685.68, stdev=6980.89 clat (msec): min=9, max=808, avg=407.98, stdev=97.72 lat (msec): min=26, max=816, avg=421.67, stdev=98.54 clat percentiles (msec): | 1.00th=[ 131], 5.00th=[ 264], 10.00th=[ 292], 20.00th=[ 334], | 30.00th=[ 363], 40.00th=[ 384], 50.00th=[ 405], 60.00th=[ 426], | 70.00th=[ 451], 80.00th=[ 481], 90.00th=[ 527], 95.00th=[ 575], | 99.00th=[ 693], 99.50th=[ 726], 99.90th=[ 785], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 8, max= 104, per=25.15%, avg=48.28, stdev=20.75, samples=205 iops : min= 2, max= 26, avg=11.61, stdev= 5.26, samples=205 write: IOPS=12, BW=49.0KiB/s (51.2kB/s)(5192KiB/103930msec); 0 zone resets slat (usec): min=33, max=21208, avg=317.05, stdev=1006.29 clat (msec): min=199, max=1715, avg=868.56, stdev=219.40 lat (msec): min=199, max=1715, avg=868.88, stdev=219.37 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 531], 10.00th=[ 609], 20.00th=[ 676], | 30.00th=[ 760], 40.00th=[ 802], 50.00th=[ 860], 60.00th=[ 919], | 70.00th=[ 978], 80.00th=[ 1045], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1418], 99.50th=[ 1603], 99.90th=[ 1703], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 7, max= 103, per=24.64%, avg=49.28, stdev=19.30, samples=206 iops : min= 1, max= 25, avg=11.86, stdev= 4.82, samples=206 lat (msec) : 10=0.04%, 20=0.04%, 50=0.08%, 100=0.16%, 250=1.56% lat (msec) : 500=41.95%, 750=20.16%, 1000=22.89%, 2000=13.12% cpu : usr=0.12%, sys=0.69%, ctx=5116, 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=145351: Tue Aug 25 22:22:47 2026 read: IOPS=11, BW=47.8KiB/s (48.9kB/s)(4976KiB/104206msec) slat (usec): min=2539, max=60426, avg=13532.08, stdev=7173.27 clat (msec): min=17, max=826, avg=408.82, stdev=94.28 lat (msec): min=27, max=838, avg=422.37, stdev=95.03 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 275], 10.00th=[ 300], 20.00th=[ 338], | 30.00th=[ 359], 40.00th=[ 380], 50.00th=[ 405], 60.00th=[ 426], | 70.00th=[ 451], 80.00th=[ 481], 90.00th=[ 518], 95.00th=[ 558], | 99.00th=[ 684], 99.50th=[ 726], 99.90th=[ 818], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 112, per=24.74%, avg=47.50, stdev=21.52, samples=205 iops : min= 1, max= 28, avg=11.41, stdev= 5.41, samples=205 write: IOPS=12, BW=50.5KiB/s (51.7kB/s)(5264KiB/104206msec); 0 zone resets slat (usec): min=35, max=18051, avg=305.61, stdev=1038.22 clat (msec): min=218, max=1740, avg=865.44, stdev=229.16 lat (msec): min=219, max=1740, avg=865.75, stdev=229.20 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 527], 10.00th=[ 584], 20.00th=[ 667], | 30.00th=[ 743], 40.00th=[ 802], 50.00th=[ 852], 60.00th=[ 911], | 70.00th=[ 986], 80.00th=[ 1053], 90.00th=[ 1150], 95.00th=[ 1250], | 99.00th=[ 1435], 99.50th=[ 1620], 99.90th=[ 1720], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 7, max= 103, per=25.10%, avg=50.19, stdev=19.26, samples=206 iops : min= 1, max= 25, avg=12.09, stdev= 4.90, samples=206 lat (msec) : 20=0.04%, 50=0.16%, 250=1.21%, 500=42.19%, 750=20.51% lat (msec) : 1000=22.27%, 2000=13.63% cpu : usr=0.10%, sys=0.62%, ctx=4852, 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=145352: Tue Aug 25 22:22:47 2026 read: IOPS=12, BW=48.2KiB/s (49.4kB/s)(4984KiB/103321msec) slat (usec): min=32, max=49192, avg=13461.06, stdev=6827.44 clat (msec): min=5, max=1057, avg=401.58, stdev=101.33 lat (msec): min=16, max=1064, avg=415.05, stdev=102.49 clat percentiles (msec): | 1.00th=[ 73], 5.00th=[ 257], 10.00th=[ 296], 20.00th=[ 334], | 30.00th=[ 359], 40.00th=[ 380], 50.00th=[ 401], 60.00th=[ 422], | 70.00th=[ 447], 80.00th=[ 477], 90.00th=[ 518], 95.00th=[ 558], | 99.00th=[ 659], 99.50th=[ 693], 99.90th=[ 877], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 111, per=24.90%, avg=47.81, stdev=20.92, samples=205 iops : min= 1, max= 27, avg=11.49, stdev= 5.26, samples=205 write: IOPS=12, BW=50.9KiB/s (52.1kB/s)(5256KiB/103321msec); 0 zone resets slat (usec): min=30, max=12728, avg=289.85, stdev=807.02 clat (msec): min=112, max=1734, avg=863.34, stdev=230.46 lat (msec): min=112, max=1735, avg=863.63, stdev=230.51 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 531], 10.00th=[ 592], 20.00th=[ 659], | 30.00th=[ 735], 40.00th=[ 802], 50.00th=[ 860], 60.00th=[ 919], | 70.00th=[ 978], 80.00th=[ 1053], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1452], 99.50th=[ 1636], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 7, max= 134, per=25.00%, avg=50.00, stdev=19.98, samples=205 iops : min= 1, max= 33, avg=12.04, stdev= 5.02, samples=205 lat (msec) : 10=0.04%, 50=0.20%, 100=0.70%, 250=1.52%, 500=41.37% lat (msec) : 750=21.45%, 1000=21.02%, 2000=13.71% cpu : usr=0.11%, sys=0.63%, ctx=4822, 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=145353: Tue Aug 25 22:22:47 2026 read: IOPS=12, BW=48.6KiB/s (49.8kB/s)(5060KiB/104025msec) slat (usec): min=2858, max=46068, avg=13523.16, stdev=6784.35 clat (msec): min=18, max=808, avg=410.93, stdev=89.05 lat (msec): min=28, max=827, avg=424.47, stdev=89.94 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 279], 10.00th=[ 309], 20.00th=[ 338], | 30.00th=[ 363], 40.00th=[ 384], 50.00th=[ 405], 60.00th=[ 426], | 70.00th=[ 451], 80.00th=[ 481], 90.00th=[ 523], 95.00th=[ 558], | 99.00th=[ 667], 99.50th=[ 701], 99.90th=[ 760], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 120, per=25.32%, avg=48.62, stdev=21.67, samples=204 iops : min= 1, max= 30, avg=11.69, stdev= 5.47, samples=204 write: IOPS=12, BW=49.8KiB/s (50.0kB/s)(5180KiB/104025msec); 0 zone resets slat (usec): min=33, max=19089, avg=313.33, stdev=1036.18 clat (msec): min=125, max=1773, avg=868.21, stdev=224.48 lat (msec): min=127, max=1773, avg=868.53, stdev=224.41 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 514], 10.00th=[ 592], 20.00th=[ 684], | 30.00th=[ 751], 40.00th=[ 810], 50.00th=[ 852], 60.00th=[ 919], | 70.00th=[ 978], 80.00th=[ 1045], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1418], 99.50th=[ 1620], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 103, per=24.66%, avg=49.33, stdev=18.37, samples=206 iops : min= 1, max= 25, avg=11.87, stdev= 4.63, samples=206 lat (msec) : 20=0.04%, 100=0.08%, 250=1.13%, 500=42.93%, 750=20.20% lat (msec) : 1000=22.03%, 2000=13.59% cpu : usr=0.09%, sys=0.63%, ctx=4535, 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=193KiB/s (197kB/s), 47.8KiB/s-48.6KiB/s (48.9kB/s-49.8kB/s), io=19.6MiB (20.5MB), run=103321-104206msec WRITE: bw=200KiB/s (205kB/s), 49.8KiB/s-50.9KiB/s (50.0kB/s-52.1kB/s), io=20.4MiB (21.4MB), run=103321-104206msec 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=145372: Tue Aug 25 22:22:56 2026 read: IOPS=1, BW=79.1MiB/s (82.9MB/s)(40.0MiB/506msec) slat (nsec): min=50631k, max=50631k, avg=50630548.00, stdev= 0.00 clat (nsec): min=417026k, max=417026k, avg=417025815.00, stdev= 0.00 lat (nsec): min=467661k, max=467661k, avg=467661019.00, 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=2.77%, ctx=43, 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=79.1MiB/s (82.9MB/s), 79.1MiB/s-79.1MiB/s (82.9MB/s-82.9MB/s), io=40.0MiB (41.9MB), run=506-506msec 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