== sanity test 398c: run fio to test AIO ================= 09:21:23 (1787750483) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.657234 s, 63.8 MB/s osc.lustre-OST0000-osc-ffff8b04750ea800.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=145772: Wed Aug 26 09:24:21 2026 write: IOPS=15, BW=62.2KiB/s (63.7kB/s)(10.0MiB/164515msec); 0 zone resets slat (usec): min=22, max=18621, avg=201.72, stdev=872.53 clat (msec): min=179, max=2438, avg=1026.69, stdev=379.12 lat (msec): min=184, max=2438, avg=1026.89, stdev=379.13 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 443], 10.00th=[ 575], 20.00th=[ 718], | 30.00th=[ 835], 40.00th=[ 902], 50.00th=[ 978], 60.00th=[ 1045], | 70.00th=[ 1133], 80.00th=[ 1318], 90.00th=[ 1603], 95.00th=[ 1737], | 99.00th=[ 2039], 99.50th=[ 2123], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2433] bw ( KiB/s): min= 7, max= 237, per=25.88%, avg=64.19, stdev=33.25, samples=314 iops : min= 1, max= 59, avg=15.60, stdev= 8.35, samples=314 lat (msec) : 250=0.08%, 500=6.60%, 750=15.31%, 1000=31.84%, 2000=44.88% lat (msec) : >=2000=1.29% cpu : usr=0.04%, sys=0.21%, ctx=1733, 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=145773: Wed Aug 26 09:24:21 2026 write: IOPS=15, BW=62.4KiB/s (63.9kB/s)(10.0MiB/164082msec); 0 zone resets slat (usec): min=22, max=22164, avg=223.12, stdev=998.21 clat (msec): min=85, max=2391, avg=1024.22, stdev=376.88 lat (msec): min=85, max=2391, avg=1024.45, stdev=376.89 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 456], 10.00th=[ 575], 20.00th=[ 718], | 30.00th=[ 827], 40.00th=[ 902], 50.00th=[ 978], 60.00th=[ 1045], | 70.00th=[ 1133], 80.00th=[ 1334], 90.00th=[ 1586], 95.00th=[ 1720], | 99.00th=[ 2039], 99.50th=[ 2165], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2400] bw ( KiB/s): min= 7, max= 213, per=25.14%, avg=62.36, stdev=31.06, samples=323 iops : min= 1, max= 53, avg=15.14, stdev= 7.81, samples=323 lat (msec) : 100=0.04%, 250=0.08%, 500=6.09%, 750=15.66%, 1000=31.48% lat (msec) : 2000=45.55%, >=2000=1.09% cpu : usr=0.04%, sys=0.19%, ctx=1873, 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=145774: Wed Aug 26 09:24:21 2026 write: IOPS=15, BW=62.6KiB/s (64.1kB/s)(10.0MiB/163565msec); 0 zone resets slat (usec): min=21, max=22862, avg=192.77, stdev=836.77 clat (msec): min=239, max=2439, avg=1021.66, stdev=380.54 lat (msec): min=239, max=2439, avg=1021.86, stdev=380.56 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 460], 10.00th=[ 575], 20.00th=[ 718], | 30.00th=[ 827], 40.00th=[ 902], 50.00th=[ 978], 60.00th=[ 1045], | 70.00th=[ 1133], 80.00th=[ 1301], 90.00th=[ 1586], 95.00th=[ 1720], | 99.00th=[ 2106], 99.50th=[ 2232], 99.90th=[ 2400], 99.95th=[ 2433], | 99.99th=[ 2433] bw ( KiB/s): min= 7, max= 256, per=25.78%, avg=63.93, stdev=36.69, samples=315 iops : min= 1, max= 64, avg=15.54, stdev= 9.23, samples=315 lat (msec) : 250=0.47%, 500=6.05%, 750=14.92%, 1000=32.62%, 2000=44.38% lat (msec) : >=2000=1.56% cpu : usr=0.05%, sys=0.20%, ctx=1802, 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=145775: Wed Aug 26 09:24:21 2026 write: IOPS=15, BW=62.3KiB/s (63.8kB/s)(10.0MiB/164467msec); 0 zone resets slat (usec): min=21, max=14894, avg=175.16, stdev=711.52 clat (msec): min=252, max=2390, avg=1026.55, stdev=378.43 lat (msec): min=252, max=2390, avg=1026.72, stdev=378.44 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 456], 10.00th=[ 575], 20.00th=[ 718], | 30.00th=[ 827], 40.00th=[ 911], 50.00th=[ 978], 60.00th=[ 1053], | 70.00th=[ 1150], 80.00th=[ 1334], 90.00th=[ 1586], 95.00th=[ 1737], | 99.00th=[ 2039], 99.50th=[ 2106], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2400] bw ( KiB/s): min= 7, max= 252, per=25.23%, avg=62.56, stdev=34.33, samples=322 iops : min= 1, max= 63, avg=15.20, stdev= 8.63, samples=322 lat (msec) : 500=6.60%, 750=15.16%, 1000=32.03%, 2000=45.12%, >=2000=1.09% cpu : usr=0.05%, sys=0.21%, ctx=1986, 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=249KiB/s (255kB/s), 62.2KiB/s-62.6KiB/s (63.7kB/s-64.1kB/s), io=40.0MiB (41.9MB), run=163565-164515msec 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=145809: Wed Aug 26 09:26:22 2026 read: IOPS=11, BW=44.0KiB/s (46.0kB/s)(5048KiB/112282msec) slat (usec): min=2378, max=97802, avg=14445.79, stdev=9269.05 clat (msec): min=19, max=1613, avg=447.41, stdev=192.27 lat (msec): min=23, max=1631, avg=461.86, stdev=195.07 clat percentiles (msec): | 1.00th=[ 150], 5.00th=[ 247], 10.00th=[ 279], 20.00th=[ 313], | 30.00th=[ 342], 40.00th=[ 372], 50.00th=[ 401], 60.00th=[ 435], | 70.00th=[ 481], 80.00th=[ 550], 90.00th=[ 684], 95.00th=[ 802], | 99.00th=[ 1083], 99.50th=[ 1536], 99.90th=[ 1603], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7, max= 119, per=25.48%, avg=45.35, stdev=23.18, samples=218 iops : min= 1, max= 29, avg=10.85, stdev= 5.83, samples=218 write: IOPS=11, BW=46.2KiB/s (47.3kB/s)(5192KiB/112282msec); 0 zone resets slat (usec): min=32, max=17418, avg=232.54, stdev=882.71 clat (msec): min=319, max=2874, avg=931.09, stdev=345.93 lat (msec): min=319, max=2875, avg=931.32, stdev=345.91 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 498], 10.00th=[ 558], 20.00th=[ 676], | 30.00th=[ 743], 40.00th=[ 802], 50.00th=[ 885], 60.00th=[ 944], | 70.00th=[ 1028], 80.00th=[ 1116], 90.00th=[ 1284], 95.00th=[ 1653], | 99.00th=[ 2198], 99.50th=[ 2299], 99.90th=[ 2735], 99.95th=[ 2869], | 99.99th=[ 2869] bw ( KiB/s): min= 7, max= 142, per=25.05%, avg=46.34, stdev=22.76, samples=219 iops : min= 1, max= 35, avg=11.10, stdev= 5.76, samples=219 lat (msec) : 20=0.04%, 50=0.12%, 100=0.12%, 250=2.42%, 500=36.02% lat (msec) : 750=22.85%, 1000=20.43%, 2000=16.80%, >=2000=1.21% cpu : usr=0.09%, sys=0.56%, ctx=4608, 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=145810: Wed Aug 26 09:26:22 2026 read: IOPS=11, BW=44.2KiB/s (45.3kB/s)(4976KiB/112488msec) slat (msec): min=2, max=105, avg=14.12, stdev= 9.03 clat (msec): min=25, max=1575, avg=438.35, stdev=179.43 lat (msec): min=35, max=1602, avg=452.48, stdev=182.12 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 239], 10.00th=[ 275], 20.00th=[ 313], | 30.00th=[ 342], 40.00th=[ 372], 50.00th=[ 405], 60.00th=[ 430], | 70.00th=[ 481], 80.00th=[ 542], 90.00th=[ 667], 95.00th=[ 751], | 99.00th=[ 1083], 99.50th=[ 1200], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 7, max= 166, per=25.17%, avg=44.80, stdev=25.56, samples=217 iops : min= 1, max= 41, avg=10.72, stdev= 6.44, samples=217 write: IOPS=11, BW=46.8KiB/s (47.9kB/s)(5264KiB/112488msec); 0 zone resets slat (usec): min=28, max=19115, avg=214.15, stdev=848.37 clat (msec): min=211, max=2818, avg=936.98, stdev=356.57 lat (msec): min=212, max=2818, avg=937.20, stdev=356.57 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 498], 10.00th=[ 584], 20.00th=[ 693], | 30.00th=[ 760], 40.00th=[ 810], 50.00th=[ 877], 60.00th=[ 944], | 70.00th=[ 1028], 80.00th=[ 1116], 90.00th=[ 1301], 95.00th=[ 1653], | 99.00th=[ 2232], 99.50th=[ 2534], 99.90th=[ 2802], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 7, max= 135, per=25.28%, avg=46.76, stdev=21.51, samples=220 iops : min= 1, max= 33, avg=11.20, stdev= 5.41, samples=220 lat (msec) : 50=0.08%, 100=0.27%, 250=2.73%, 500=35.23%, 750=22.62% lat (msec) : 1000=21.21%, 2000=16.48%, >=2000=1.37% cpu : usr=0.10%, sys=0.60%, ctx=4728, 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=145811: Wed Aug 26 09:26:22 2026 read: IOPS=11, BW=44.4KiB/s (45.5kB/s)(4984KiB/112273msec) slat (usec): min=50, max=110923, avg=14046.50, stdev=9226.24 clat (msec): min=10, max=1592, avg=440.60, stdev=179.75 lat (msec): min=28, max=1630, avg=454.65, stdev=182.63 clat percentiles (msec): | 1.00th=[ 163], 5.00th=[ 245], 10.00th=[ 279], 20.00th=[ 313], | 30.00th=[ 347], 40.00th=[ 376], 50.00th=[ 401], 60.00th=[ 435], | 70.00th=[ 477], 80.00th=[ 535], 90.00th=[ 659], 95.00th=[ 776], | 99.00th=[ 1053], 99.50th=[ 1250], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 7, max= 150, per=25.38%, avg=45.17, stdev=24.42, samples=217 iops : min= 1, max= 37, avg=10.81, stdev= 6.15, samples=217 write: IOPS=11, BW=46.8KiB/s (47.9kB/s)(5256KiB/112273msec); 0 zone resets slat (usec): min=29, max=20579, avg=284.37, stdev=1285.08 clat (msec): min=141, max=2802, avg=934.63, stdev=352.86 lat (msec): min=141, max=2802, avg=934.92, stdev=352.91 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 472], 10.00th=[ 567], 20.00th=[ 676], | 30.00th=[ 751], 40.00th=[ 818], 50.00th=[ 877], 60.00th=[ 961], | 70.00th=[ 1045], 80.00th=[ 1133], 90.00th=[ 1318], 95.00th=[ 1620], | 99.00th=[ 2198], 99.50th=[ 2333], 99.90th=[ 2769], 99.95th=[ 2802], | 99.99th=[ 2802] bw ( KiB/s): min= 7, max= 104, per=25.28%, avg=46.76, stdev=21.28, samples=219 iops : min= 1, max= 26, avg=11.20, stdev= 5.35, samples=219 lat (msec) : 20=0.04%, 50=0.12%, 100=0.16%, 250=2.70%, 500=36.05% lat (msec) : 750=22.30%, 1000=19.92%, 2000=17.46%, >=2000=1.25% cpu : usr=0.10%, sys=0.60%, ctx=4671, 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=145812: Wed Aug 26 09:26:22 2026 read: IOPS=11, BW=45.1KiB/s (46.2kB/s)(5060KiB/112128msec) slat (usec): min=2628, max=87351, avg=14362.47, stdev=9791.81 clat (msec): min=36, max=1632, avg=445.17, stdev=188.25 lat (msec): min=61, max=1670, avg=459.54, stdev=191.01 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 243], 10.00th=[ 279], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 372], 50.00th=[ 401], 60.00th=[ 435], | 70.00th=[ 472], 80.00th=[ 550], 90.00th=[ 684], 95.00th=[ 810], | 99.00th=[ 1116], 99.50th=[ 1334], 99.90th=[ 1620], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 7, max= 128, per=25.96%, avg=46.21, stdev=23.42, samples=215 iops : min= 1, max= 32, avg=11.06, stdev= 5.88, samples=215 write: IOPS=11, BW=46.2KiB/s (47.3kB/s)(5180KiB/112128msec); 0 zone resets slat (usec): min=32, max=11467, avg=181.36, stdev=464.21 clat (msec): min=272, max=2750, avg=933.20, stdev=355.23 lat (msec): min=272, max=2750, avg=933.38, stdev=355.24 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 485], 10.00th=[ 575], 20.00th=[ 676], | 30.00th=[ 743], 40.00th=[ 810], 50.00th=[ 877], 60.00th=[ 944], | 70.00th=[ 1028], 80.00th=[ 1116], 90.00th=[ 1318], 95.00th=[ 1620], | 99.00th=[ 2232], 99.50th=[ 2366], 99.90th=[ 2635], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 7, max= 112, per=24.96%, avg=46.18, stdev=21.26, samples=219 iops : min= 1, max= 28, avg=11.06, stdev= 5.37, samples=219 lat (msec) : 50=0.12%, 100=0.12%, 250=2.50%, 500=36.95%, 750=22.07% lat (msec) : 1000=20.20%, 2000=16.68%, >=2000=1.37% cpu : usr=0.09%, sys=0.54%, ctx=4362, 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=178KiB/s (183kB/s), 44.2KiB/s-45.1KiB/s (45.3kB/s-46.2kB/s), io=19.6MiB (20.5MB), run=112128-112488msec WRITE: bw=186KiB/s (190kB/s), 46.2KiB/s-46.8KiB/s (47.3kB/s-47.9kB/s), io=20.4MiB (21.4MB), run=112128-112488msec 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=145832: Wed Aug 26 09:26:34 2026 read: IOPS=1, BW=64.7MiB/s (67.9MB/s)(40.0MiB/618msec) slat (nsec): min=38109k, max=38109k, avg=38108613.00, stdev= 0.00 clat (nsec): min=551402k, max=551402k, avg=551401927.00, stdev= 0.00 lat (nsec): min=589515k, max=589515k, avg=589514995.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=2.27%, ctx=6, 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=64.7MiB/s (67.9MB/s), 64.7MiB/s-64.7MiB/s (67.9MB/s-67.9MB/s), io=40.0MiB (41.9MB), run=618-618msec 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