== sanity test 398c: run fio to test AIO ================= 15:18:28 (1788203908) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.709252 s, 59.1 MB/s osc.lustre-OST0000-osc-ffff9e6d6769a800.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=145408: Mon Aug 31 15:21:46 2026 write: IOPS=13, BW=55.0KiB/s (56.3kB/s)(10.0MiB/186173msec); 0 zone resets slat (usec): min=30, max=26697, avg=403.27, stdev=1513.37 clat (msec): min=380, max=2305, avg=1162.07, stdev=326.74 lat (msec): min=380, max=2305, avg=1162.47, stdev=326.75 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 701], 10.00th=[ 802], 20.00th=[ 885], | 30.00th=[ 969], 40.00th=[ 1045], 50.00th=[ 1133], 60.00th=[ 1183], | 70.00th=[ 1267], 80.00th=[ 1401], 90.00th=[ 1620], 95.00th=[ 1804], | 99.00th=[ 2106], 99.50th=[ 2165], 99.90th=[ 2265], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 128, per=26.34%, avg=57.69, stdev=28.10, samples=348 iops : min= 1, max= 32, avg=13.86, stdev= 7.04, samples=348 lat (msec) : 500=0.70%, 750=5.74%, 1000=27.38%, 2000=63.75%, >=2000=2.42% cpu : usr=0.06%, sys=0.28%, ctx=1744, majf=0, minf=8 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=145409: Mon Aug 31 15:21:46 2026 write: IOPS=13, BW=54.0KiB/s (56.3kB/s)(10.0MiB/186328msec); 0 zone resets slat (usec): min=29, max=23087, avg=380.53, stdev=1358.86 clat (msec): min=435, max=2307, avg=1163.12, stdev=322.32 lat (msec): min=435, max=2315, avg=1163.51, stdev=322.35 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 718], 10.00th=[ 802], 20.00th=[ 902], | 30.00th=[ 978], 40.00th=[ 1045], 50.00th=[ 1116], 60.00th=[ 1200], | 70.00th=[ 1284], 80.00th=[ 1401], 90.00th=[ 1603], 95.00th=[ 1804], | 99.00th=[ 2089], 99.50th=[ 2198], 99.90th=[ 2232], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 128, per=25.60%, avg=56.06, stdev=29.39, samples=358 iops : min= 1, max= 32, avg=13.45, stdev= 7.38, samples=358 lat (msec) : 500=0.86%, 750=5.86%, 1000=26.45%, 2000=65.04%, >=2000=1.80% cpu : usr=0.06%, sys=0.26%, ctx=1656, 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=145410: Mon Aug 31 15:21:46 2026 write: IOPS=13, BW=55.0KiB/s (56.3kB/s)(10.0MiB/186122msec); 0 zone resets slat (usec): min=28, max=26537, avg=342.34, stdev=1245.05 clat (msec): min=369, max=2314, avg=1162.43, stdev=321.91 lat (msec): min=369, max=2315, avg=1162.78, stdev=321.90 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 726], 10.00th=[ 810], 20.00th=[ 902], | 30.00th=[ 978], 40.00th=[ 1053], 50.00th=[ 1116], 60.00th=[ 1183], | 70.00th=[ 1267], 80.00th=[ 1401], 90.00th=[ 1603], 95.00th=[ 1804], | 99.00th=[ 2089], 99.50th=[ 2140], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 128, per=25.80%, avg=56.50, stdev=27.51, samples=355 iops : min= 1, max= 32, avg=13.57, stdev= 6.92, samples=355 lat (msec) : 500=0.62%, 750=5.82%, 1000=26.99%, 2000=64.84%, >=2000=1.72% cpu : usr=0.06%, sys=0.27%, ctx=1831, majf=0, minf=8 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=145411: Mon Aug 31 15:21:46 2026 write: IOPS=13, BW=55.0KiB/s (56.3kB/s)(10.0MiB/186163msec); 0 zone resets slat (usec): min=25, max=21934, avg=365.16, stdev=1214.00 clat (msec): min=171, max=2301, avg=1162.73, stdev=323.15 lat (msec): min=171, max=2305, avg=1163.10, stdev=323.15 clat percentiles (msec): | 1.00th=[ 542], 5.00th=[ 726], 10.00th=[ 802], 20.00th=[ 885], | 30.00th=[ 986], 40.00th=[ 1053], 50.00th=[ 1116], 60.00th=[ 1200], | 70.00th=[ 1267], 80.00th=[ 1401], 90.00th=[ 1603], 95.00th=[ 1804], | 99.00th=[ 2123], 99.50th=[ 2165], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 127, per=24.89%, avg=54.51, stdev=22.88, samples=368 iops : min= 1, max= 31, avg=13.06, stdev= 5.76, samples=368 lat (msec) : 250=0.04%, 500=0.62%, 750=6.09%, 1000=26.05%, 2000=65.27% lat (msec) : >=2000=1.91% cpu : usr=0.06%, sys=0.28%, ctx=1954, 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 Run status group 0 (all jobs): WRITE: bw=220KiB/s (225kB/s), 54.0KiB/s-55.0KiB/s (56.3kB/s-56.3kB/s), io=40.0MiB (41.9MB), run=186122-186328msec 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=145447: Mon Aug 31 15:23:58 2026 read: IOPS=10, BW=41.6KiB/s (42.6kB/s)(5048KiB/121467msec) slat (usec): min=37, max=89417, avg=16981.72, stdev=10143.12 clat (msec): min=19, max=1718, avg=480.21, stdev=172.92 lat (msec): min=33, max=1744, avg=497.20, stdev=176.08 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 264], 10.00th=[ 309], 20.00th=[ 355], | 30.00th=[ 388], 40.00th=[ 418], 50.00th=[ 456], 60.00th=[ 493], | 70.00th=[ 535], 80.00th=[ 600], 90.00th=[ 693], 95.00th=[ 776], | 99.00th=[ 944], 99.50th=[ 1036], 99.90th=[ 1670], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 7, max= 104, per=25.67%, avg=42.11, stdev=20.05, samples=234 iops : min= 1, max= 26, avg= 9.92, stdev= 5.03, samples=234 write: IOPS=10, BW=42.7KiB/s (43.8kB/s)(5192KiB/121467msec); 0 zone resets slat (usec): min=29, max=17250, avg=413.90, stdev=1212.17 clat (msec): min=119, max=2678, avg=1012.02, stdev=353.34 lat (msec): min=119, max=2678, avg=1012.44, stdev=353.32 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 472], 10.00th=[ 567], 20.00th=[ 726], | 30.00th=[ 818], 40.00th=[ 894], 50.00th=[ 961], 60.00th=[ 1062], | 70.00th=[ 1183], 80.00th=[ 1318], 90.00th=[ 1485], 95.00th=[ 1620], | 99.00th=[ 1888], 99.50th=[ 2039], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 7, max= 111, per=24.84%, avg=42.48, stdev=21.94, samples=238 iops : min= 1, max= 27, avg=10.02, stdev= 5.51, samples=238 lat (msec) : 20=0.04%, 50=0.27%, 100=0.27%, 250=1.56%, 500=31.17% lat (msec) : 750=24.02%, 1000=19.34%, 2000=23.01%, >=2000=0.31% cpu : usr=0.11%, sys=0.71%, ctx=4047, 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=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=145448: Mon Aug 31 15:23:58 2026 read: IOPS=10, BW=40.9KiB/s (41.9kB/s)(4976KiB/121700msec) slat (usec): min=3462, max=69247, avg=16778.81, stdev=9485.18 clat (msec): min=25, max=1147, avg=477.15, stdev=154.72 lat (msec): min=47, max=1170, avg=493.94, stdev=156.92 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 257], 10.00th=[ 305], 20.00th=[ 351], | 30.00th=[ 388], 40.00th=[ 426], 50.00th=[ 460], 60.00th=[ 502], | 70.00th=[ 535], 80.00th=[ 592], 90.00th=[ 676], 95.00th=[ 760], | 99.00th=[ 953], 99.50th=[ 1003], 99.90th=[ 1150], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 119, per=24.79%, avg=40.66, stdev=21.83, samples=238 iops : min= 1, max= 29, avg= 9.56, stdev= 5.47, samples=238 write: IOPS=10, BW=43.3KiB/s (44.3kB/s)(5264KiB/121700msec); 0 zone resets slat (usec): min=33, max=17634, avg=364.38, stdev=1003.57 clat (msec): min=306, max=2085, avg=1010.04, stdev=342.01 lat (msec): min=308, max=2085, avg=1010.41, stdev=341.99 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 485], 10.00th=[ 567], 20.00th=[ 709], | 30.00th=[ 810], 40.00th=[ 894], 50.00th=[ 961], 60.00th=[ 1053], | 70.00th=[ 1167], 80.00th=[ 1318], 90.00th=[ 1519], 95.00th=[ 1620], | 99.00th=[ 1804], 99.50th=[ 1905], 99.90th=[ 2022], 99.95th=[ 2089], | 99.99th=[ 2089] bw ( KiB/s): min= 7, max= 119, per=25.02%, avg=42.78, stdev=22.33, samples=240 iops : min= 1, max= 29, avg=10.09, stdev= 5.56, samples=240 lat (msec) : 50=0.16%, 100=0.16%, 250=1.64%, 500=30.31%, 750=25.82% lat (msec) : 1000=19.18%, 2000=22.66%, >=2000=0.08% cpu : usr=0.10%, sys=0.69%, ctx=4073, 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=145449: Mon Aug 31 15:23:58 2026 read: IOPS=10, BW=40.0KiB/s (41.0kB/s)(4984KiB/121653msec) slat (usec): min=3445, max=76701, avg=16890.40, stdev=9781.88 clat (msec): min=19, max=1300, avg=468.56, stdev=152.56 lat (msec): min=36, max=1341, avg=485.47, stdev=155.62 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 253], 10.00th=[ 300], 20.00th=[ 351], | 30.00th=[ 384], 40.00th=[ 414], 50.00th=[ 451], 60.00th=[ 485], | 70.00th=[ 518], 80.00th=[ 575], 90.00th=[ 676], 95.00th=[ 760], | 99.00th=[ 927], 99.50th=[ 944], 99.90th=[ 1099], 99.95th=[ 1301], | 99.99th=[ 1301] bw ( KiB/s): min= 7, max= 120, per=24.98%, avg=40.96, stdev=23.49, samples=238 iops : min= 1, max= 30, avg= 9.63, stdev= 5.90, samples=238 write: IOPS=10, BW=43.2KiB/s (44.2kB/s)(5256KiB/121653msec); 0 zone resets slat (usec): min=34, max=18679, avg=422.36, stdev=1365.80 clat (msec): min=314, max=2026, avg=1017.76, stdev=334.34 lat (msec): min=314, max=2026, avg=1018.19, stdev=334.35 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 502], 10.00th=[ 600], 20.00th=[ 726], | 30.00th=[ 818], 40.00th=[ 902], 50.00th=[ 978], 60.00th=[ 1083], | 70.00th=[ 1200], 80.00th=[ 1318], 90.00th=[ 1485], 95.00th=[ 1603], | 99.00th=[ 1804], 99.50th=[ 1888], 99.90th=[ 2005], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 7, max= 112, per=25.10%, avg=42.92, stdev=20.47, samples=238 iops : min= 1, max= 28, avg=10.13, stdev= 5.12, samples=238 lat (msec) : 20=0.04%, 50=0.12%, 100=0.16%, 250=2.03%, 500=31.88% lat (msec) : 750=23.40%, 1000=17.77%, 2000=24.53%, >=2000=0.08% cpu : usr=0.12%, sys=0.83%, ctx=4394, 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=145450: Mon Aug 31 15:23:58 2026 read: IOPS=10, BW=41.6KiB/s (42.6kB/s)(5060KiB/121539msec) slat (usec): min=2947, max=92235, avg=16595.83, stdev=9190.95 clat (msec): min=16, max=1932, avg=481.04, stdev=175.74 lat (msec): min=23, max=1960, avg=497.64, stdev=177.76 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 271], 10.00th=[ 309], 20.00th=[ 355], | 30.00th=[ 384], 40.00th=[ 422], 50.00th=[ 460], 60.00th=[ 493], | 70.00th=[ 535], 80.00th=[ 592], 90.00th=[ 684], 95.00th=[ 760], | 99.00th=[ 961], 99.50th=[ 1200], 99.90th=[ 1921], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 7, max= 95, per=25.73%, avg=42.19, stdev=19.95, samples=234 iops : min= 1, max= 23, avg= 9.94, stdev= 5.01, samples=234 write: IOPS=10, BW=42.6KiB/s (43.6kB/s)(5180KiB/121539msec); 0 zone resets slat (usec): min=32, max=25349, avg=401.96, stdev=1262.53 clat (msec): min=359, max=2569, avg=1012.08, stdev=351.54 lat (msec): min=359, max=2569, avg=1012.49, stdev=351.50 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 485], 10.00th=[ 575], 20.00th=[ 718], | 30.00th=[ 810], 40.00th=[ 894], 50.00th=[ 969], 60.00th=[ 1045], | 70.00th=[ 1167], 80.00th=[ 1318], 90.00th=[ 1502], 95.00th=[ 1636], | 99.00th=[ 1938], 99.50th=[ 2072], 99.90th=[ 2534], 99.95th=[ 2567], | 99.99th=[ 2567] bw ( KiB/s): min= 7, max= 136, per=24.90%, avg=42.57, stdev=22.05, samples=237 iops : min= 1, max= 34, avg=10.05, stdev= 5.52, samples=237 lat (msec) : 20=0.04%, 50=0.04%, 100=0.20%, 250=1.41%, 500=31.68% lat (msec) : 750=24.92%, 1000=18.67%, 2000=22.58%, >=2000=0.47% cpu : usr=0.11%, sys=0.73%, ctx=4504, 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=165KiB/s (169kB/s), 40.9KiB/s-41.6KiB/s (41.9kB/s-42.6kB/s), io=19.6MiB (20.5MB), run=121467-121700msec WRITE: bw=172KiB/s (176kB/s), 42.6KiB/s-43.3KiB/s (43.6kB/s-44.3kB/s), io=20.4MiB (21.4MB), run=121467-121700msec 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=145476: Mon Aug 31 15:24:10 2026 read: IOPS=1, BW=58.0MiB/s (61.9MB/s)(40.0MiB/678msec) slat (nsec): min=44289k, max=44289k, avg=44289382.00, stdev= 0.00 clat (nsec): min=601528k, max=601528k, avg=601528222.00, stdev= 0.00 lat (nsec): min=645824k, max=645824k, avg=645824044.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=2.22%, ctx=26, 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=58.0MiB/s (61.9MB/s), 58.0MiB/s-58.0MiB/s (61.9MB/s-61.9MB/s), io=40.0MiB (41.9MB), run=678-678msec 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