== sanity test 398c: run fio to test AIO ================= 02:08:02 (1787119682) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.549782 s, 76.3 MB/s osc.lustre-OST0000-osc-ffff95e5e0922800.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=145428: Wed Aug 19 02:10:37 2026 write: IOPS=17, BW=70.7KiB/s (72.4kB/s)(10.0MiB/144909msec); 0 zone resets slat (usec): min=38, max=25063, avg=254.58, stdev=899.81 clat (msec): min=49, max=2267, avg=904.77, stdev=279.40 lat (msec): min=49, max=2267, avg=905.03, stdev=279.40 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 502], 10.00th=[ 609], 20.00th=[ 701], | 30.00th=[ 760], 40.00th=[ 827], 50.00th=[ 877], 60.00th=[ 936], | 70.00th=[ 1003], 80.00th=[ 1083], 90.00th=[ 1250], 95.00th=[ 1435], | 99.00th=[ 1821], 99.50th=[ 1854], 99.90th=[ 2106], 99.95th=[ 2123], | 99.99th=[ 2265] bw ( KiB/s): min= 15, max= 200, per=25.02%, avg=70.56, stdev=29.33, samples=286 iops : min= 3, max= 50, avg=17.25, stdev= 7.39, samples=286 lat (msec) : 50=0.04%, 100=0.04%, 250=0.16%, 500=4.61%, 750=22.46% lat (msec) : 1000=42.77%, 2000=29.69%, >=2000=0.23% cpu : usr=0.04%, sys=0.30%, ctx=2231, 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=145429: Wed Aug 19 02:10:37 2026 write: IOPS=17, BW=70.7KiB/s (72.4kB/s)(10.0MiB/144913msec); 0 zone resets slat (usec): min=37, max=23046, avg=254.68, stdev=931.16 clat (msec): min=226, max=2114, avg=904.34, stdev=276.95 lat (msec): min=226, max=2114, avg=904.59, stdev=276.94 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 502], 10.00th=[ 609], 20.00th=[ 693], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 877], 60.00th=[ 936], | 70.00th=[ 1003], 80.00th=[ 1083], 90.00th=[ 1250], 95.00th=[ 1418], | 99.00th=[ 1821], 99.50th=[ 1888], 99.90th=[ 2089], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 7, max= 248, per=25.03%, avg=70.57, stdev=33.76, samples=286 iops : min= 1, max= 62, avg=17.25, stdev= 8.47, samples=286 lat (msec) : 250=0.27%, 500=4.57%, 750=21.45%, 1000=43.32%, 2000=30.23% lat (msec) : >=2000=0.16% cpu : usr=0.05%, sys=0.26%, ctx=1932, 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=145430: Wed Aug 19 02:10:37 2026 write: IOPS=17, BW=71.0KiB/s (72.7kB/s)(10.0MiB/144198msec); 0 zone resets slat (usec): min=38, max=21879, avg=249.16, stdev=989.99 clat (msec): min=255, max=2124, avg=900.55, stdev=275.99 lat (msec): min=255, max=2124, avg=900.80, stdev=276.05 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 485], 10.00th=[ 609], 20.00th=[ 701], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 885], 60.00th=[ 936], | 70.00th=[ 986], 80.00th=[ 1083], 90.00th=[ 1234], 95.00th=[ 1401], | 99.00th=[ 1787], 99.50th=[ 1854], 99.90th=[ 2072], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 8, max= 254, per=25.19%, avg=71.05, stdev=34.31, samples=284 iops : min= 2, max= 63, avg=17.37, stdev= 8.60, samples=284 lat (msec) : 500=5.27%, 750=21.21%, 1000=44.18%, 2000=29.06%, >=2000=0.27% cpu : usr=0.04%, sys=0.28%, ctx=1821, 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=145431: Wed Aug 19 02:10:37 2026 write: IOPS=17, BW=70.7KiB/s (72.4kB/s)(10.0MiB/144828msec); 0 zone resets slat (usec): min=36, max=24989, avg=261.76, stdev=956.31 clat (msec): min=226, max=2172, avg=903.91, stdev=277.17 lat (msec): min=226, max=2172, avg=904.18, stdev=277.20 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 506], 10.00th=[ 609], 20.00th=[ 701], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 877], 60.00th=[ 936], | 70.00th=[ 995], 80.00th=[ 1083], 90.00th=[ 1234], 95.00th=[ 1418], | 99.00th=[ 1821], 99.50th=[ 1972], 99.90th=[ 2123], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 248, per=25.29%, avg=71.33, stdev=29.25, samples=283 iops : min= 1, max= 62, avg=17.44, stdev= 7.32, samples=283 lat (msec) : 250=0.08%, 500=4.77%, 750=21.64%, 1000=43.83%, 2000=29.41% lat (msec) : >=2000=0.27% cpu : usr=0.04%, sys=0.30%, ctx=1948, 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=283KiB/s (289kB/s), 70.7KiB/s-71.0KiB/s (72.4kB/s-72.7kB/s), io=40.0MiB (41.9MB), run=144198-144913msec 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=145462: Wed Aug 19 02:12:32 2026 read: IOPS=12, BW=49.4KiB/s (50.6kB/s)(5048KiB/102180msec) slat (usec): min=2771, max=57419, avg=13599.09, stdev=7562.47 clat (msec): min=12, max=1062, avg=396.67, stdev=113.01 lat (msec): min=30, max=1067, avg=410.27, stdev=113.97 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 253], 10.00th=[ 279], 20.00th=[ 317], | 30.00th=[ 338], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 405], | 70.00th=[ 435], 80.00th=[ 468], 90.00th=[ 527], 95.00th=[ 592], | 99.00th=[ 785], 99.50th=[ 810], 99.90th=[ 969], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 128, per=24.95%, avg=48.91, stdev=22.07, samples=202 iops : min= 1, max= 32, avg=11.72, stdev= 5.56, samples=202 write: IOPS=12, BW=50.8KiB/s (52.0kB/s)(5192KiB/102180msec); 0 zone resets slat (usec): min=52, max=21084, avg=333.14, stdev=1025.86 clat (msec): min=379, max=1722, avg=856.76, stdev=236.95 lat (msec): min=380, max=1722, avg=857.10, stdev=236.93 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 506], 10.00th=[ 567], 20.00th=[ 642], | 30.00th=[ 718], 40.00th=[ 768], 50.00th=[ 844], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 1045], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1502], 99.50th=[ 1620], 99.90th=[ 1687], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 7, max= 111, per=24.66%, avg=50.31, stdev=21.35, samples=202 iops : min= 1, max= 27, avg=12.07, stdev= 5.37, samples=202 lat (msec) : 20=0.08%, 50=0.16%, 100=0.20%, 250=1.95%, 500=42.66% lat (msec) : 750=21.84%, 1000=19.96%, 2000=13.16% cpu : usr=0.09%, sys=0.70%, ctx=4412, 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=145463: Wed Aug 19 02:12:32 2026 read: IOPS=12, BW=48.7KiB/s (49.9kB/s)(4976KiB/102211msec) slat (usec): min=86, max=48881, avg=13526.00, stdev=7459.78 clat (msec): min=18, max=823, avg=390.49, stdev=105.42 lat (msec): min=31, max=843, avg=404.02, stdev=106.73 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 247], 10.00th=[ 279], 20.00th=[ 317], | 30.00th=[ 338], 40.00th=[ 359], 50.00th=[ 380], 60.00th=[ 397], | 70.00th=[ 426], 80.00th=[ 460], 90.00th=[ 523], 95.00th=[ 575], | 99.00th=[ 743], 99.50th=[ 768], 99.90th=[ 818], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 119, per=24.67%, avg=48.36, stdev=22.20, samples=200 iops : min= 1, max= 29, avg=11.58, stdev= 5.61, samples=200 write: IOPS=12, BW=51.5KiB/s (52.7kB/s)(5264KiB/102211msec); 0 zone resets slat (usec): min=52, max=11958, avg=329.41, stdev=836.98 clat (msec): min=218, max=1716, avg=859.62, stdev=246.26 lat (msec): min=218, max=1716, avg=859.96, stdev=246.25 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 489], 10.00th=[ 550], 20.00th=[ 642], | 30.00th=[ 718], 40.00th=[ 776], 50.00th=[ 844], 60.00th=[ 911], | 70.00th=[ 969], 80.00th=[ 1062], 90.00th=[ 1167], 95.00th=[ 1284], | 99.00th=[ 1569], 99.50th=[ 1636], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 7, max= 120, per=24.87%, avg=50.73, stdev=21.81, samples=202 iops : min= 1, max= 30, avg=12.17, stdev= 5.50, samples=202 lat (msec) : 20=0.04%, 50=0.20%, 100=0.20%, 250=2.42%, 500=42.19% lat (msec) : 750=20.90%, 1000=20.62%, 2000=13.44% cpu : usr=0.10%, sys=0.71%, ctx=4401, 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=145464: Wed Aug 19 02:12:32 2026 read: IOPS=12, BW=48.8KiB/s (49.0kB/s)(4984KiB/102106msec) slat (usec): min=3021, max=62394, avg=13791.25, stdev=7931.79 clat (msec): min=8, max=985, avg=392.97, stdev=112.57 lat (msec): min=22, max=990, avg=406.77, stdev=113.54 clat percentiles (msec): | 1.00th=[ 68], 5.00th=[ 247], 10.00th=[ 275], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 359], 50.00th=[ 376], 60.00th=[ 401], | 70.00th=[ 430], 80.00th=[ 464], 90.00th=[ 523], 95.00th=[ 584], | 99.00th=[ 785], 99.50th=[ 810], 99.90th=[ 986], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 127, per=24.83%, avg=48.67, stdev=22.42, samples=201 iops : min= 1, max= 31, avg=11.66, stdev= 5.66, samples=201 write: IOPS=12, BW=51.5KiB/s (52.7kB/s)(5256KiB/102106msec); 0 zone resets slat (usec): min=55, max=17694, avg=323.53, stdev=943.56 clat (msec): min=281, max=1666, avg=854.17, stdev=241.50 lat (msec): min=282, max=1666, avg=854.49, stdev=241.52 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 498], 10.00th=[ 558], 20.00th=[ 634], | 30.00th=[ 709], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 902], | 70.00th=[ 978], 80.00th=[ 1045], 90.00th=[ 1167], 95.00th=[ 1284], | 99.00th=[ 1569], 99.50th=[ 1603], 99.90th=[ 1636], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 7, max= 104, per=24.87%, avg=50.74, stdev=21.14, samples=202 iops : min= 1, max= 26, avg=12.17, stdev= 5.32, samples=202 lat (msec) : 10=0.04%, 20=0.04%, 50=0.27%, 100=0.20%, 250=2.07% lat (msec) : 500=42.42%, 750=21.68%, 1000=19.92%, 2000=13.36% cpu : usr=0.11%, sys=0.69%, ctx=4700, 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=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=145465: Wed Aug 19 02:12:32 2026 read: IOPS=12, BW=49.6KiB/s (50.8kB/s)(5060KiB/102069msec) slat (usec): min=2950, max=52825, avg=13466.11, stdev=7699.88 clat (msec): min=21, max=1087, avg=394.82, stdev=112.01 lat (msec): min=31, max=1113, avg=408.29, stdev=113.22 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 251], 10.00th=[ 284], 20.00th=[ 317], | 30.00th=[ 338], 40.00th=[ 359], 50.00th=[ 380], 60.00th=[ 401], | 70.00th=[ 430], 80.00th=[ 464], 90.00th=[ 523], 95.00th=[ 584], | 99.00th=[ 768], 99.50th=[ 827], 99.90th=[ 1062], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 127, per=25.39%, avg=49.77, stdev=21.21, samples=199 iops : min= 1, max= 31, avg=11.93, stdev= 5.36, samples=199 write: IOPS=12, BW=50.7KiB/s (51.0kB/s)(5180KiB/102069msec); 0 zone resets slat (usec): min=43, max=15929, avg=349.35, stdev=1036.55 clat (msec): min=388, max=1716, avg=858.65, stdev=240.08 lat (msec): min=388, max=1716, avg=859.00, stdev=240.13 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 518], 10.00th=[ 575], 20.00th=[ 642], | 30.00th=[ 709], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 902], | 70.00th=[ 969], 80.00th=[ 1045], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1586], 99.50th=[ 1636], 99.90th=[ 1687], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 15, max= 103, per=24.71%, avg=50.42, stdev=20.83, samples=201 iops : min= 3, max= 25, avg=12.09, stdev= 5.23, samples=201 lat (msec) : 50=0.08%, 100=0.31%, 250=2.19%, 500=42.34%, 750=22.46% lat (msec) : 1000=19.65%, 2000=12.97% cpu : usr=0.08%, sys=0.72%, ctx=4386, 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=196KiB/s (201kB/s), 48.7KiB/s-49.6KiB/s (49.9kB/s-50.8kB/s), io=19.6MiB (20.5MB), run=102069-102211msec WRITE: bw=204KiB/s (209kB/s), 50.7KiB/s-51.5KiB/s (51.0kB/s-52.7kB/s), io=20.4MiB (21.4MB), run=102069-102211msec 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=145484: Wed Aug 19 02:12:41 2026 read: IOPS=1, BW=76.8MiB/s (80.5MB/s)(40.0MiB/521msec) slat (nsec): min=26508k, max=26508k, avg=26508369.00, stdev= 0.00 clat (nsec): min=481483k, max=481483k, avg=481482771.00, stdev= 0.00 lat (nsec): min=508024k, max=508024k, avg=508023514.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 481], 10.00th=[ 481], 20.00th=[ 481], | 30.00th=[ 481], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.31%, ctx=25, 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=76.8MiB/s (80.5MB/s), 76.8MiB/s-76.8MiB/s (80.5MB/s-80.5MB/s), io=40.0MiB (41.9MB), run=521-521msec 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