== sanity test 398c: run fio to test AIO ================= 17:33:03 (1787607183) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.554854 s, 75.6 MB/s osc.lustre-OST0000-osc-ffff999b08733800.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=146178: Mon Aug 24 17:35:46 2026 write: IOPS=16, BW=66.0KiB/s (68.6kB/s)(10.0MiB/152929msec); 0 zone resets slat (usec): min=22, max=20053, avg=219.44, stdev=1002.58 clat (msec): min=155, max=1888, avg=954.89, stdev=262.98 lat (msec): min=155, max=1889, avg=955.11, stdev=263.00 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 609], 10.00th=[ 667], 20.00th=[ 735], | 30.00th=[ 793], 40.00th=[ 869], 50.00th=[ 927], 60.00th=[ 986], | 70.00th=[ 1053], 80.00th=[ 1150], 90.00th=[ 1318], 95.00th=[ 1469], | 99.00th=[ 1720], 99.50th=[ 1804], 99.90th=[ 1821], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 7, max= 128, per=25.00%, avg=66.76, stdev=29.99, samples=302 iops : min= 1, max= 32, avg=16.26, stdev= 7.51, samples=302 lat (msec) : 250=0.51%, 500=0.90%, 750=21.21%, 1000=39.45%, 2000=37.93% cpu : usr=0.05%, sys=0.20%, ctx=1734, 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=146179: Mon Aug 24 17:35:46 2026 write: IOPS=16, BW=66.9KiB/s (68.5kB/s)(10.0MiB/152971msec); 0 zone resets slat (usec): min=23, max=20491, avg=203.05, stdev=870.02 clat (msec): min=89, max=1859, avg=955.45, stdev=258.63 lat (msec): min=89, max=1859, avg=955.65, stdev=258.63 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 609], 10.00th=[ 659], 20.00th=[ 735], | 30.00th=[ 785], 40.00th=[ 869], 50.00th=[ 944], 60.00th=[ 1003], | 70.00th=[ 1062], 80.00th=[ 1150], 90.00th=[ 1301], 95.00th=[ 1435], | 99.00th=[ 1687], 99.50th=[ 1703], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 210, per=26.48%, avg=70.69, stdev=36.66, samples=285 iops : min= 1, max= 52, avg=17.25, stdev= 9.21, samples=285 lat (msec) : 100=0.62%, 500=1.02%, 750=19.65%, 1000=38.63%, 2000=40.08% cpu : usr=0.04%, sys=0.19%, ctx=1576, 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=146180: Mon Aug 24 17:35:46 2026 write: IOPS=16, BW=66.0KiB/s (68.6kB/s)(10.0MiB/152929msec); 0 zone resets slat (usec): min=28, max=20150, avg=200.29, stdev=909.16 clat (msec): min=87, max=1906, avg=954.81, stdev=260.24 lat (msec): min=87, max=1906, avg=955.02, stdev=260.23 clat percentiles (msec): | 1.00th=[ 502], 5.00th=[ 609], 10.00th=[ 667], 20.00th=[ 735], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 919], 60.00th=[ 986], | 70.00th=[ 1062], 80.00th=[ 1150], 90.00th=[ 1301], 95.00th=[ 1469], | 99.00th=[ 1703], 99.50th=[ 1821], 99.90th=[ 1905], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 7, max= 128, per=25.00%, avg=66.75, stdev=26.49, samples=302 iops : min= 1, max= 32, avg=16.26, stdev= 6.64, samples=302 lat (msec) : 100=0.04%, 250=0.16%, 500=0.74%, 750=21.05%, 1000=39.49% lat (msec) : 2000=38.52% cpu : usr=0.04%, sys=0.20%, ctx=1764, 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=146181: Mon Aug 24 17:35:46 2026 write: IOPS=16, BW=66.9KiB/s (68.5kB/s)(10.0MiB/152967msec); 0 zone resets slat (usec): min=25, max=16601, avg=189.89, stdev=796.47 clat (msec): min=360, max=1867, avg=955.10, stdev=259.90 lat (msec): min=360, max=1867, avg=955.29, stdev=259.92 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 609], 10.00th=[ 659], 20.00th=[ 735], | 30.00th=[ 802], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 986], | 70.00th=[ 1053], 80.00th=[ 1150], 90.00th=[ 1284], 95.00th=[ 1485], | 99.00th=[ 1737], 99.50th=[ 1804], 99.90th=[ 1854], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 7, max= 128, per=25.60%, avg=68.36, stdev=29.01, samples=295 iops : min= 1, max= 32, avg=16.66, stdev= 7.24, samples=295 lat (msec) : 500=0.74%, 750=21.76%, 1000=39.80%, 2000=37.70% cpu : usr=0.04%, sys=0.18%, ctx=1536, 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 Run status group 0 (all jobs): WRITE: bw=268KiB/s (274kB/s), 66.9KiB/s-66.0KiB/s (68.5kB/s-68.6kB/s), io=40.0MiB (41.9MB), run=152929-152971msec 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=146213: Mon Aug 24 17:37:49 2026 read: IOPS=10, BW=43.7KiB/s (44.7kB/s)(5048KiB/115545msec) slat (msec): min=2, max=586, avg=15.20, stdev=18.43 clat (msec): min=19, max=1582, avg=461.92, stdev=147.49 lat (msec): min=28, max=1599, avg=477.12, stdev=148.44 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 266], 10.00th=[ 300], 20.00th=[ 347], | 30.00th=[ 384], 40.00th=[ 418], 50.00th=[ 451], 60.00th=[ 485], | 70.00th=[ 523], 80.00th=[ 558], 90.00th=[ 634], 95.00th=[ 701], | 99.00th=[ 885], 99.50th=[ 927], 99.90th=[ 1569], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 7, max= 111, per=25.43%, avg=43.99, stdev=20.46, samples=225 iops : min= 1, max= 27, avg=10.48, stdev= 5.13, samples=225 write: IOPS=11, BW=44.9KiB/s (46.0kB/s)(5192KiB/115545msec); 0 zone resets slat (usec): min=22, max=81434, avg=333.48, stdev=2481.55 clat (msec): min=380, max=2063, avg=956.28, stdev=254.64 lat (msec): min=380, max=2066, avg=956.62, stdev=254.72 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 592], 10.00th=[ 651], 20.00th=[ 743], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 936], 60.00th=[ 995], | 70.00th=[ 1062], 80.00th=[ 1133], 90.00th=[ 1267], 95.00th=[ 1418], | 99.00th=[ 1787], 99.50th=[ 1838], 99.90th=[ 2056], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 6, max= 104, per=24.70%, avg=44.46, stdev=20.81, samples=228 iops : min= 1, max= 26, avg=10.61, stdev= 5.24, samples=228 lat (msec) : 20=0.04%, 50=0.12%, 100=0.27%, 250=1.21%, 500=29.88% lat (msec) : 750=26.60%, 1000=21.72%, 2000=20.08%, >=2000=0.08% cpu : usr=0.08%, sys=0.51%, ctx=4157, 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=146214: Mon Aug 24 17:37:49 2026 read: IOPS=10, BW=43.1KiB/s (44.1kB/s)(4976KiB/115473msec) slat (usec): min=2846, max=82735, avg=15329.35, stdev=9470.59 clat (msec): min=19, max=1666, avg=461.76, stdev=149.65 lat (msec): min=32, max=1681, avg=477.10, stdev=150.94 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 279], 10.00th=[ 305], 20.00th=[ 347], | 30.00th=[ 380], 40.00th=[ 414], 50.00th=[ 447], 60.00th=[ 477], | 70.00th=[ 514], 80.00th=[ 558], 90.00th=[ 634], 95.00th=[ 701], | 99.00th=[ 902], 99.50th=[ 1053], 99.90th=[ 1620], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 7, max= 103, per=25.01%, avg=43.26, stdev=18.68, samples=225 iops : min= 1, max= 25, avg=10.30, stdev= 4.69, samples=225 write: IOPS=11, BW=45.6KiB/s (46.7kB/s)(5264KiB/115473msec); 0 zone resets slat (usec): min=27, max=22369, avg=232.99, stdev=915.89 clat (msec): min=371, max=1907, avg=949.45, stdev=250.06 lat (msec): min=371, max=1907, avg=949.68, stdev=250.03 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 600], 10.00th=[ 659], 20.00th=[ 743], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 936], 60.00th=[ 978], | 70.00th=[ 1045], 80.00th=[ 1133], 90.00th=[ 1284], 95.00th=[ 1418], | 99.00th=[ 1787], 99.50th=[ 1804], 99.90th=[ 1838], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 7, max= 103, per=25.30%, avg=45.55, stdev=21.17, samples=226 iops : min= 1, max= 25, avg=10.88, stdev= 5.33, samples=226 lat (msec) : 20=0.04%, 50=0.08%, 100=0.04%, 250=1.09%, 500=31.56% lat (msec) : 750=25.12%, 1000=22.89%, 2000=19.18% cpu : usr=0.08%, sys=0.46%, ctx=3761, 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=146215: Mon Aug 24 17:37:49 2026 read: IOPS=10, BW=43.4KiB/s (44.4kB/s)(4984KiB/114881msec) slat (usec): min=49, max=56101, avg=14809.76, stdev=8972.32 clat (msec): min=27, max=1176, avg=456.09, stdev=136.77 lat (msec): min=36, max=1185, avg=470.90, stdev=138.52 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 271], 10.00th=[ 305], 20.00th=[ 347], | 30.00th=[ 384], 40.00th=[ 409], 50.00th=[ 443], 60.00th=[ 472], | 70.00th=[ 510], 80.00th=[ 550], 90.00th=[ 642], 95.00th=[ 701], | 99.00th=[ 852], 99.50th=[ 885], 99.90th=[ 1167], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 127, per=24.89%, avg=43.06, stdev=20.76, samples=227 iops : min= 1, max= 31, avg=10.25, stdev= 5.18, samples=227 write: IOPS=11, BW=45.8KiB/s (46.8kB/s)(5256KiB/114881msec); 0 zone resets slat (usec): min=31, max=12418, avg=222.68, stdev=686.00 clat (msec): min=176, max=2090, avg=950.94, stdev=259.69 lat (msec): min=179, max=2091, avg=951.16, stdev=259.69 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 592], 10.00th=[ 651], 20.00th=[ 743], | 30.00th=[ 802], 40.00th=[ 869], 50.00th=[ 927], 60.00th=[ 986], | 70.00th=[ 1045], 80.00th=[ 1133], 90.00th=[ 1267], 95.00th=[ 1469], | 99.00th=[ 1787], 99.50th=[ 1838], 99.90th=[ 2039], 99.95th=[ 2089], | 99.99th=[ 2089] bw ( KiB/s): min= 7, max= 104, per=25.40%, avg=45.73, stdev=18.92, samples=224 iops : min= 1, max= 26, avg=10.92, stdev= 4.74, samples=224 lat (msec) : 50=0.16%, 100=0.23%, 250=1.13%, 500=32.19%, 750=24.61% lat (msec) : 1000=22.62%, 2000=18.98%, >=2000=0.08% cpu : usr=0.07%, sys=0.45%, ctx=3903, 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=146216: Mon Aug 24 17:37:49 2026 read: IOPS=10, BW=43.8KiB/s (44.8kB/s)(5060KiB/115543msec) slat (msec): min=2, max=935, avg=15.78, stdev=27.58 clat (msec): min=42, max=1515, avg=461.30, stdev=153.66 lat (msec): min=52, max=1521, avg=477.10, stdev=155.41 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 266], 10.00th=[ 300], 20.00th=[ 347], | 30.00th=[ 384], 40.00th=[ 409], 50.00th=[ 443], 60.00th=[ 477], | 70.00th=[ 518], 80.00th=[ 567], 90.00th=[ 634], 95.00th=[ 701], | 99.00th=[ 911], 99.50th=[ 1062], 99.90th=[ 1502], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 7, max= 120, per=25.54%, avg=44.19, stdev=20.55, samples=225 iops : min= 1, max= 30, avg=10.54, stdev= 5.14, samples=225 write: IOPS=11, BW=44.8KiB/s (45.9kB/s)(5180KiB/115543msec); 0 zone resets slat (usec): min=33, max=24915, avg=234.94, stdev=961.47 clat (msec): min=402, max=2076, avg=957.28, stdev=245.22 lat (msec): min=403, max=2077, avg=957.52, stdev=245.21 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 592], 10.00th=[ 659], 20.00th=[ 760], | 30.00th=[ 818], 40.00th=[ 877], 50.00th=[ 936], 60.00th=[ 995], | 70.00th=[ 1062], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1401], | 99.00th=[ 1770], 99.50th=[ 1804], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 7, max= 120, per=24.93%, avg=44.87, stdev=19.78, samples=225 iops : min= 1, max= 30, avg=10.71, stdev= 4.98, samples=225 lat (msec) : 50=0.08%, 100=0.27%, 250=1.09%, 500=31.72%, 750=24.18% lat (msec) : 1000=22.54%, 2000=20.04%, >=2000=0.08% cpu : usr=0.08%, sys=0.54%, ctx=4405, 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=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=174KiB/s (178kB/s), 43.1KiB/s-43.8KiB/s (44.1kB/s-44.8kB/s), io=19.6MiB (20.5MB), run=114881-115545msec WRITE: bw=181KiB/s (185kB/s), 44.8KiB/s-45.8KiB/s (45.9kB/s-46.8kB/s), io=20.4MiB (21.4MB), run=114881-115545msec 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=146237: Mon Aug 24 17:38:01 2026 read: IOPS=2, BW=93.7MiB/s (98.2MB/s)(40.0MiB/427msec) slat (nsec): min=15116k, max=15116k, avg=15115841.00, stdev= 0.00 clat (nsec): min=389753k, max=389753k, avg=389753193.00, stdev= 0.00 lat (nsec): min=404874k, max=404874k, avg=404874372.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.58%, ctx=8, majf=0, minf=8 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=93.7MiB/s (98.2MB/s), 93.7MiB/s-93.7MiB/s (98.2MB/s-98.2MB/s), io=40.0MiB (41.9MB), run=427-427msec 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