== sanity test 398c: run fio to test AIO ================= 20:29:17 (1787444957) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.461716 s, 90.8 MB/s osc.lustre-OST0000-osc-ffff9c6e5837f800.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=146446: Sat Aug 22 20:32:30 2026 write: IOPS=14, BW=56.1KiB/s (57.4kB/s)(10.0MiB/182603msec); 0 zone resets slat (usec): min=22, max=20876, avg=304.60, stdev=1187.70 clat (msec): min=238, max=2552, avg=1139.71, stdev=318.28 lat (msec): min=238, max=2552, avg=1140.02, stdev=318.30 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 676], 10.00th=[ 743], 20.00th=[ 877], | 30.00th=[ 961], 40.00th=[ 1036], 50.00th=[ 1116], 60.00th=[ 1200], | 70.00th=[ 1284], 80.00th=[ 1385], 90.00th=[ 1569], 95.00th=[ 1703], | 99.00th=[ 1972], 99.50th=[ 2198], 99.90th=[ 2433], 99.95th=[ 2500], | 99.99th=[ 2567] bw ( KiB/s): min= 7, max= 128, per=25.62%, avg=57.40, stdev=30.38, samples=350 iops : min= 1, max= 32, avg=13.82, stdev= 7.60, samples=350 lat (msec) : 250=0.04%, 500=1.33%, 750=8.98%, 1000=24.73%, 2000=64.02% lat (msec) : >=2000=0.90% cpu : usr=0.05%, sys=0.25%, ctx=1864, 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=146447: Sat Aug 22 20:32:30 2026 write: IOPS=14, BW=56.1KiB/s (57.4kB/s)(10.0MiB/182650msec); 0 zone resets slat (usec): min=29, max=17014, avg=275.69, stdev=1024.16 clat (msec): min=308, max=2785, avg=1139.82, stdev=320.02 lat (msec): min=308, max=2785, avg=1140.10, stdev=320.00 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 676], 10.00th=[ 751], 20.00th=[ 877], | 30.00th=[ 969], 40.00th=[ 1036], 50.00th=[ 1116], 60.00th=[ 1200], | 70.00th=[ 1284], 80.00th=[ 1368], 90.00th=[ 1536], 95.00th=[ 1653], | 99.00th=[ 1989], 99.50th=[ 2702], 99.90th=[ 2769], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 7, max= 128, per=26.23%, avg=58.76, stdev=30.04, samples=342 iops : min= 1, max= 32, avg=14.16, stdev= 7.55, samples=342 lat (msec) : 500=1.25%, 750=8.52%, 1000=25.66%, 2000=63.67%, >=2000=0.90% cpu : usr=0.05%, sys=0.24%, ctx=1909, 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=146448: Sat Aug 22 20:32:30 2026 write: IOPS=14, BW=56.2KiB/s (57.6kB/s)(10.0MiB/182155msec); 0 zone resets slat (usec): min=29, max=15940, avg=303.90, stdev=1070.81 clat (msec): min=192, max=2741, avg=1137.70, stdev=327.93 lat (msec): min=192, max=2742, avg=1138.01, stdev=327.92 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 667], 10.00th=[ 726], 20.00th=[ 860], | 30.00th=[ 969], 40.00th=[ 1045], 50.00th=[ 1133], 60.00th=[ 1200], | 70.00th=[ 1284], 80.00th=[ 1385], 90.00th=[ 1536], 95.00th=[ 1670], | 99.00th=[ 1921], 99.50th=[ 2534], 99.90th=[ 2668], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 7, max= 128, per=25.40%, avg=56.90, stdev=28.18, samples=353 iops : min= 1, max= 32, avg=13.69, stdev= 7.09, samples=353 lat (msec) : 250=0.66%, 500=1.25%, 750=9.61%, 1000=22.30%, 2000=65.35% lat (msec) : >=2000=0.82% cpu : usr=0.04%, sys=0.25%, ctx=1906, 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=146449: Sat Aug 22 20:32:30 2026 write: IOPS=14, BW=56.1KiB/s (57.5kB/s)(10.0MiB/182462msec); 0 zone resets slat (usec): min=29, max=18637, avg=331.13, stdev=1219.77 clat (msec): min=179, max=2790, avg=1139.25, stdev=325.85 lat (msec): min=180, max=2790, avg=1139.59, stdev=325.83 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 684], 10.00th=[ 751], 20.00th=[ 860], | 30.00th=[ 969], 40.00th=[ 1036], 50.00th=[ 1133], 60.00th=[ 1183], | 70.00th=[ 1267], 80.00th=[ 1385], 90.00th=[ 1569], 95.00th=[ 1670], | 99.00th=[ 2039], 99.50th=[ 2265], 99.90th=[ 2668], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 7, max= 128, per=26.23%, avg=58.75, stdev=33.89, samples=342 iops : min= 1, max= 32, avg=14.16, stdev= 8.48, samples=342 lat (msec) : 250=0.59%, 500=0.70%, 750=8.91%, 1000=24.80%, 2000=63.67% lat (msec) : >=2000=1.33% cpu : usr=0.05%, sys=0.23%, ctx=1690, 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 Run status group 0 (all jobs): WRITE: bw=224KiB/s (230kB/s), 56.1KiB/s-56.2KiB/s (57.4kB/s-57.6kB/s), io=40.0MiB (41.9MB), run=182155-182650msec 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=146485: Sat Aug 22 20:35:00 2026 read: IOPS=8, BW=35.7KiB/s (36.5kB/s)(5048KiB/141558msec) slat (usec): min=2687, max=70638, avg=17355.07, stdev=9747.79 clat (msec): min=20, max=1203, avg=548.86, stdev=159.12 lat (msec): min=31, max=1239, avg=566.22, stdev=161.36 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 334], 10.00th=[ 368], 20.00th=[ 418], | 30.00th=[ 464], 40.00th=[ 498], 50.00th=[ 531], 60.00th=[ 567], | 70.00th=[ 609], 80.00th=[ 659], 90.00th=[ 751], 95.00th=[ 844], | 99.00th=[ 1028], 99.50th=[ 1070], 99.90th=[ 1183], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 120, per=25.90%, avg=36.51, stdev=19.45, samples=270 iops : min= 1, max= 30, avg= 8.60, stdev= 4.87, samples=270 write: IOPS=9, BW=36.7KiB/s (37.6kB/s)(5192KiB/141558msec); 0 zone resets slat (usec): min=31, max=19990, avg=393.56, stdev=1289.22 clat (msec): min=194, max=2642, avg=1191.34, stdev=386.84 lat (msec): min=194, max=2642, avg=1191.74, stdev=386.90 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 625], 10.00th=[ 760], 20.00th=[ 894], | 30.00th=[ 978], 40.00th=[ 1045], 50.00th=[ 1133], 60.00th=[ 1217], | 70.00th=[ 1351], 80.00th=[ 1485], 90.00th=[ 1737], 95.00th=[ 1905], | 99.00th=[ 2433], 99.50th=[ 2534], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 7, max= 87, per=24.98%, avg=36.73, stdev=17.66, samples=275 iops : min= 1, max= 21, avg= 8.65, stdev= 4.45, samples=275 lat (msec) : 50=0.04%, 100=0.08%, 250=0.39%, 500=20.27%, 750=28.28% lat (msec) : 1000=16.48%, 2000=33.01%, >=2000=1.45% cpu : usr=0.09%, sys=0.53%, ctx=4324, 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=146486: Sat Aug 22 20:35:00 2026 read: IOPS=8, BW=35.2KiB/s (36.0kB/s)(4976KiB/141396msec) slat (usec): min=3211, max=76292, avg=17283.50, stdev=10126.72 clat (msec): min=25, max=1538, avg=545.82, stdev=169.33 lat (msec): min=33, max=1563, avg=563.11, stdev=171.20 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 326], 10.00th=[ 368], 20.00th=[ 422], | 30.00th=[ 460], 40.00th=[ 493], 50.00th=[ 531], 60.00th=[ 567], | 70.00th=[ 600], 80.00th=[ 667], 90.00th=[ 751], 95.00th=[ 844], | 99.00th=[ 1053], 99.50th=[ 1150], 99.90th=[ 1267], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7, max= 104, per=25.41%, avg=35.83, stdev=19.02, samples=271 iops : min= 1, max= 26, avg= 8.42, stdev= 4.79, samples=271 write: IOPS=9, BW=37.2KiB/s (38.1kB/s)(5264KiB/141396msec); 0 zone resets slat (usec): min=35, max=12145, avg=289.83, stdev=814.64 clat (msec): min=264, max=2672, avg=1183.68, stdev=384.18 lat (msec): min=264, max=2673, avg=1183.97, stdev=384.23 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 609], 10.00th=[ 751], 20.00th=[ 885], | 30.00th=[ 978], 40.00th=[ 1045], 50.00th=[ 1116], 60.00th=[ 1217], | 70.00th=[ 1334], 80.00th=[ 1469], 90.00th=[ 1703], 95.00th=[ 1888], | 99.00th=[ 2333], 99.50th=[ 2467], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 7, max= 109, per=25.17%, avg=37.00, stdev=19.67, samples=277 iops : min= 1, max= 27, avg= 8.72, stdev= 4.93, samples=277 lat (msec) : 50=0.16%, 100=0.31%, 250=0.59%, 500=20.39%, 750=27.23% lat (msec) : 1000=15.70%, 2000=34.10%, >=2000=1.52% cpu : usr=0.08%, sys=0.54%, ctx=4337, 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=146487: Sat Aug 22 20:35:00 2026 read: IOPS=8, BW=35.2KiB/s (36.1kB/s)(4984KiB/141566msec) slat (usec): min=2736, max=92595, avg=16724.73, stdev=9337.89 clat (msec): min=64, max=1142, avg=545.95, stdev=156.08 lat (msec): min=79, max=1166, avg=562.68, stdev=157.91 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 326], 10.00th=[ 368], 20.00th=[ 422], | 30.00th=[ 460], 40.00th=[ 502], 50.00th=[ 531], 60.00th=[ 567], | 70.00th=[ 609], 80.00th=[ 659], 90.00th=[ 751], 95.00th=[ 835], | 99.00th=[ 995], 99.50th=[ 1045], 99.90th=[ 1116], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 6, max= 120, per=25.20%, avg=35.53, stdev=19.90, samples=274 iops : min= 1, max= 30, avg= 8.35, stdev= 5.01, samples=274 write: IOPS=9, BW=37.1KiB/s (38.0kB/s)(5256KiB/141566msec); 0 zone resets slat (usec): min=32, max=11946, avg=368.79, stdev=1023.01 clat (msec): min=157, max=2757, avg=1187.48, stdev=391.26 lat (msec): min=157, max=2757, avg=1187.85, stdev=391.31 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 634], 10.00th=[ 735], 20.00th=[ 885], | 30.00th=[ 986], 40.00th=[ 1053], 50.00th=[ 1133], 60.00th=[ 1217], | 70.00th=[ 1334], 80.00th=[ 1502], 90.00th=[ 1720], 95.00th=[ 1921], | 99.00th=[ 2333], 99.50th=[ 2534], 99.90th=[ 2702], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 7, max= 111, per=24.81%, avg=36.47, stdev=18.78, samples=279 iops : min= 1, max= 27, avg= 8.59, stdev= 4.72, samples=279 lat (msec) : 100=0.12%, 250=0.66%, 500=19.41%, 750=29.34%, 1000=15.55% lat (msec) : 2000=33.24%, >=2000=1.68% cpu : usr=0.09%, sys=0.60%, ctx=4726, 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=146488: Sat Aug 22 20:35:00 2026 read: IOPS=8, BW=35.8KiB/s (36.6kB/s)(5060KiB/141394msec) slat (usec): min=36, max=75734, avg=16840.76, stdev=9964.80 clat (msec): min=27, max=1677, avg=548.08, stdev=167.53 lat (msec): min=44, max=1692, avg=564.92, stdev=169.39 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 338], 10.00th=[ 372], 20.00th=[ 418], | 30.00th=[ 456], 40.00th=[ 481], 50.00th=[ 523], 60.00th=[ 567], | 70.00th=[ 617], 80.00th=[ 667], 90.00th=[ 751], 95.00th=[ 835], | 99.00th=[ 1070], 99.50th=[ 1116], 99.90th=[ 1401], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 7, max= 112, per=26.02%, avg=36.69, stdev=18.42, samples=269 iops : min= 1, max= 28, avg= 8.64, stdev= 4.63, samples=269 write: IOPS=9, BW=36.6KiB/s (37.5kB/s)(5180KiB/141394msec); 0 zone resets slat (usec): min=33, max=31854, avg=369.81, stdev=1366.06 clat (msec): min=105, max=2643, avg=1193.69, stdev=382.62 lat (msec): min=106, max=2643, avg=1194.06, stdev=382.67 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 642], 10.00th=[ 776], 20.00th=[ 885], | 30.00th=[ 986], 40.00th=[ 1062], 50.00th=[ 1150], 60.00th=[ 1217], | 70.00th=[ 1334], 80.00th=[ 1469], 90.00th=[ 1703], 95.00th=[ 1888], | 99.00th=[ 2366], 99.50th=[ 2500], 99.90th=[ 2534], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 7, max= 87, per=24.84%, avg=36.52, stdev=17.73, samples=276 iops : min= 1, max= 21, avg= 8.60, stdev= 4.46, samples=276 lat (msec) : 50=0.12%, 100=0.16%, 250=0.43%, 500=22.11%, 750=26.21% lat (msec) : 1000=15.94%, 2000=33.32%, >=2000=1.72% cpu : usr=0.10%, sys=0.61%, ctx=4540, 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=142KiB/s (145kB/s), 35.2KiB/s-35.8KiB/s (36.0kB/s-36.6kB/s), io=19.6MiB (20.5MB), run=141394-141566msec WRITE: bw=148KiB/s (151kB/s), 36.6KiB/s-37.2KiB/s (37.5kB/s-38.1kB/s), io=20.4MiB (21.4MB), run=141394-141566msec 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=146516: Sat Aug 22 20:35:12 2026 read: IOPS=1, BW=66.6MiB/s (69.8MB/s)(40.0MiB/601msec) slat (nsec): min=17522k, max=17522k, avg=17522370.00, stdev= 0.00 clat (nsec): min=569646k, max=569646k, avg=569645830.00, stdev= 0.00 lat (nsec): min=587173k, max=587173k, avg=587173065.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.83%, ctx=44, majf=0, minf=7 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=66.6MiB/s (69.8MB/s), 66.6MiB/s-66.6MiB/s (69.8MB/s-69.8MB/s), io=40.0MiB (41.9MB), run=601-601msec 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