== sanity test 398c: run fio to test AIO ================= 06:35:08 (1768304108) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.393231 s, 107 MB/s osc.lustre-OST0000-osc-ffff9dbf8705f000.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=146800: Tue Jan 13 06:38:25 2026 write: IOPS=13, BW=55.2KiB/s (56.5kB/s)(10.0MiB/185535msec); 0 zone resets slat (usec): min=23, max=41610, avg=252.16, stdev=1220.71 clat (msec): min=171, max=2619, avg=1158.73, stdev=340.53 lat (msec): min=172, max=2619, avg=1158.98, stdev=340.51 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 600], 10.00th=[ 760], 20.00th=[ 911], | 30.00th=[ 978], 40.00th=[ 1053], 50.00th=[ 1116], 60.00th=[ 1217], | 70.00th=[ 1318], 80.00th=[ 1401], 90.00th=[ 1620], 95.00th=[ 1787], | 99.00th=[ 2089], 99.50th=[ 2232], 99.90th=[ 2534], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 7, max= 143, per=26.21%, avg=57.65, stdev=29.77, samples=349 iops : min= 1, max= 35, avg=13.93, stdev= 7.47, samples=349 lat (msec) : 250=0.16%, 500=1.02%, 750=8.52%, 1000=23.16%, 2000=65.55% lat (msec) : >=2000=1.60% cpu : usr=0.04%, sys=0.20%, ctx=1717, 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=146801: Tue Jan 13 06:38:25 2026 write: IOPS=13, BW=55.1KiB/s (56.5kB/s)(10.0MiB/185693msec); 0 zone resets slat (usec): min=22, max=22927, avg=251.54, stdev=1025.49 clat (msec): min=359, max=2355, avg=1158.95, stdev=329.05 lat (msec): min=359, max=2355, avg=1159.21, stdev=329.04 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 625], 10.00th=[ 768], 20.00th=[ 902], | 30.00th=[ 969], 40.00th=[ 1053], 50.00th=[ 1133], 60.00th=[ 1200], | 70.00th=[ 1301], 80.00th=[ 1418], 90.00th=[ 1586], 95.00th=[ 1770], | 99.00th=[ 2089], 99.50th=[ 2123], 99.90th=[ 2265], 99.95th=[ 2366], | 99.99th=[ 2366] bw ( KiB/s): min= 7, max= 128, per=25.48%, avg=56.05, stdev=29.32, samples=359 iops : min= 1, max= 32, avg=13.53, stdev= 7.35, samples=359 lat (msec) : 500=0.94%, 750=7.81%, 1000=24.96%, 2000=64.53%, >=2000=1.76% cpu : usr=0.04%, sys=0.22%, ctx=1799, 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=146802: Tue Jan 13 06:38:25 2026 write: IOPS=13, BW=55.2KiB/s (56.5kB/s)(10.0MiB/185474msec); 0 zone resets slat (usec): min=24, max=20223, avg=234.40, stdev=907.05 clat (msec): min=361, max=2630, avg=1157.44, stdev=332.21 lat (msec): min=361, max=2630, avg=1157.68, stdev=332.19 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 625], 10.00th=[ 760], 20.00th=[ 902], | 30.00th=[ 978], 40.00th=[ 1053], 50.00th=[ 1133], 60.00th=[ 1200], | 70.00th=[ 1318], 80.00th=[ 1418], 90.00th=[ 1586], 95.00th=[ 1737], | 99.00th=[ 2106], 99.50th=[ 2140], 99.90th=[ 2567], 99.95th=[ 2567], | 99.99th=[ 2635] bw ( KiB/s): min= 7, max= 143, per=25.27%, avg=55.59, stdev=26.61, samples=362 iops : min= 1, max= 35, avg=13.42, stdev= 6.67, samples=362 lat (msec) : 500=1.02%, 750=8.91%, 1000=22.73%, 2000=65.66%, >=2000=1.68% cpu : usr=0.05%, sys=0.22%, ctx=1773, 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=146803: Tue Jan 13 06:38:25 2026 write: IOPS=13, BW=55.2KiB/s (56.5kB/s)(10.0MiB/185605msec); 0 zone resets slat (usec): min=22, max=22860, avg=234.88, stdev=926.69 clat (msec): min=212, max=2478, avg=1158.59, stdev=328.59 lat (msec): min=212, max=2478, avg=1158.83, stdev=328.59 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 642], 10.00th=[ 760], 20.00th=[ 902], | 30.00th=[ 969], 40.00th=[ 1053], 50.00th=[ 1116], 60.00th=[ 1200], | 70.00th=[ 1318], 80.00th=[ 1435], 90.00th=[ 1603], 95.00th=[ 1737], | 99.00th=[ 2089], 99.50th=[ 2140], 99.90th=[ 2265], 99.95th=[ 2333], | 99.99th=[ 2467] bw ( KiB/s): min= 7, max= 128, per=25.62%, avg=56.36, stdev=26.87, samples=357 iops : min= 1, max= 32, avg=13.61, stdev= 6.75, samples=357 lat (msec) : 250=0.04%, 500=0.98%, 750=8.67%, 1000=23.75%, 2000=65.04% lat (msec) : >=2000=1.52% cpu : usr=0.05%, sys=0.21%, ctx=1800, 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=221KiB/s (226kB/s), 55.1KiB/s-55.2KiB/s (56.5kB/s-56.5kB/s), io=40.0MiB (41.9MB), run=185474-185693msec 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=146839: Tue Jan 13 06:40:45 2026 read: IOPS=9, BW=38.5KiB/s (39.4kB/s)(5048KiB/131172msec) slat (usec): min=3631, max=74875, avg=16871.39, stdev=9380.27 clat (msec): min=27, max=1206, avg=509.54, stdev=123.75 lat (msec): min=36, max=1220, avg=526.42, stdev=124.74 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 338], 10.00th=[ 372], 20.00th=[ 418], | 30.00th=[ 447], 40.00th=[ 481], 50.00th=[ 502], 60.00th=[ 523], | 70.00th=[ 550], 80.00th=[ 592], 90.00th=[ 659], 95.00th=[ 709], | 99.00th=[ 911], 99.50th=[ 969], 99.90th=[ 1083], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 95, per=25.33%, avg=38.50, stdev=18.78, samples=256 iops : min= 1, max= 23, avg= 9.05, stdev= 4.71, samples=256 write: IOPS=9, BW=39.6KiB/s (40.5kB/s)(5192KiB/131172msec); 0 zone resets slat (usec): min=32, max=19301, avg=437.92, stdev=1538.02 clat (msec): min=321, max=2025, avg=1101.14, stdev=273.84 lat (msec): min=322, max=2025, avg=1101.58, stdev=273.84 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 676], 10.00th=[ 751], 20.00th=[ 860], | 30.00th=[ 953], 40.00th=[ 1020], 50.00th=[ 1099], 60.00th=[ 1167], | 70.00th=[ 1250], 80.00th=[ 1334], 90.00th=[ 1435], 95.00th=[ 1569], | 99.00th=[ 1787], 99.50th=[ 1854], 99.90th=[ 1989], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 7, max= 110, per=25.06%, avg=39.60, stdev=18.90, samples=255 iops : min= 1, max= 27, avg= 9.33, stdev= 4.76, samples=255 lat (msec) : 50=0.08%, 100=0.16%, 250=0.16%, 500=24.26%, 750=28.20% lat (msec) : 1000=15.20%, 2000=31.91%, >=2000=0.04% cpu : usr=0.11%, sys=0.67%, ctx=4911, 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=146840: Tue Jan 13 06:40:45 2026 read: IOPS=9, BW=37.9KiB/s (38.8kB/s)(4976KiB/131171msec) slat (usec): min=55, max=67204, avg=17075.88, stdev=9417.42 clat (msec): min=44, max=1167, avg=504.09, stdev=126.97 lat (msec): min=44, max=1190, avg=521.18, stdev=128.44 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 321], 10.00th=[ 359], 20.00th=[ 409], | 30.00th=[ 447], 40.00th=[ 472], 50.00th=[ 493], 60.00th=[ 518], | 70.00th=[ 550], 80.00th=[ 592], 90.00th=[ 659], 95.00th=[ 726], | 99.00th=[ 877], 99.50th=[ 953], 99.90th=[ 1133], 99.95th=[ 1167], | 99.99th=[ 1167] bw ( KiB/s): min= 7, max= 103, per=24.92%, avg=37.87, stdev=18.32, samples=256 iops : min= 1, max= 25, avg= 8.89, stdev= 4.60, samples=256 write: IOPS=10, BW=40.1KiB/s (41.1kB/s)(5264KiB/131171msec); 0 zone resets slat (usec): min=23, max=27121, avg=433.14, stdev=1544.71 clat (msec): min=251, max=1854, avg=1100.55, stdev=267.47 lat (msec): min=251, max=1855, avg=1100.98, stdev=267.51 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 676], 10.00th=[ 751], 20.00th=[ 869], | 30.00th=[ 953], 40.00th=[ 1036], 50.00th=[ 1099], 60.00th=[ 1167], | 70.00th=[ 1234], 80.00th=[ 1334], 90.00th=[ 1452], 95.00th=[ 1552], | 99.00th=[ 1703], 99.50th=[ 1787], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 95, per=25.11%, avg=39.67, stdev=18.19, samples=258 iops : min= 1, max= 23, avg= 9.34, stdev= 4.56, samples=258 lat (msec) : 50=0.04%, 100=0.12%, 250=0.31%, 500=26.05%, 750=25.04% lat (msec) : 1000=15.00%, 2000=33.44% cpu : usr=0.11%, sys=0.62%, ctx=4373, 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=146841: Tue Jan 13 06:40:45 2026 read: IOPS=9, BW=37.9KiB/s (38.8kB/s)(4984KiB/131535msec) slat (usec): min=3430, max=76243, avg=17560.74, stdev=9696.52 clat (msec): min=13, max=1020, avg=504.41, stdev=118.77 lat (msec): min=25, max=1043, avg=521.98, stdev=119.91 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 330], 10.00th=[ 363], 20.00th=[ 418], | 30.00th=[ 447], 40.00th=[ 472], 50.00th=[ 498], 60.00th=[ 527], | 70.00th=[ 550], 80.00th=[ 592], 90.00th=[ 642], 95.00th=[ 701], | 99.00th=[ 844], 99.50th=[ 885], 99.90th=[ 969], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 7, max= 80, per=24.93%, avg=37.89, stdev=18.07, samples=257 iops : min= 1, max= 20, avg= 8.90, stdev= 4.54, samples=257 write: IOPS=9, BW=39.0KiB/s (40.9kB/s)(5256KiB/131535msec); 0 zone resets slat (usec): min=27, max=15392, avg=336.94, stdev=1038.53 clat (msec): min=239, max=1880, avg=1102.93, stdev=268.64 lat (msec): min=240, max=1880, avg=1103.27, stdev=268.65 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 651], 10.00th=[ 768], 20.00th=[ 894], | 30.00th=[ 961], 40.00th=[ 1036], 50.00th=[ 1099], 60.00th=[ 1167], | 70.00th=[ 1250], 80.00th=[ 1334], 90.00th=[ 1452], 95.00th=[ 1536], | 99.00th=[ 1787], 99.50th=[ 1821], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 7, max= 103, per=25.15%, avg=39.74, stdev=16.82, samples=257 iops : min= 1, max= 25, avg= 9.37, stdev= 4.22, samples=257 lat (msec) : 20=0.04%, 50=0.16%, 100=0.12%, 250=0.31%, 500=24.73% lat (msec) : 750=26.52%, 1000=14.84%, 2000=33.28% cpu : usr=0.11%, sys=0.66%, ctx=4967, 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=146842: Tue Jan 13 06:40:45 2026 read: IOPS=9, BW=38.7KiB/s (39.6kB/s)(5060KiB/130773msec) slat (usec): min=3259, max=60273, avg=17301.78, stdev=9602.91 clat (msec): min=43, max=1137, avg=509.08, stdev=120.80 lat (msec): min=49, max=1149, avg=526.39, stdev=121.90 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 334], 10.00th=[ 372], 20.00th=[ 418], | 30.00th=[ 451], 40.00th=[ 477], 50.00th=[ 502], 60.00th=[ 527], | 70.00th=[ 550], 80.00th=[ 600], 90.00th=[ 659], 95.00th=[ 709], | 99.00th=[ 894], 99.50th=[ 953], 99.90th=[ 1099], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 88, per=25.62%, avg=38.94, stdev=17.77, samples=254 iops : min= 1, max= 22, avg= 9.17, stdev= 4.45, samples=254 write: IOPS=9, BW=39.6KiB/s (40.6kB/s)(5180KiB/130773msec); 0 zone resets slat (usec): min=29, max=19836, avg=390.86, stdev=1358.97 clat (msec): min=388, max=1933, avg=1097.84, stdev=260.16 lat (msec): min=388, max=1933, avg=1098.23, stdev=260.21 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 659], 10.00th=[ 768], 20.00th=[ 885], | 30.00th=[ 961], 40.00th=[ 1036], 50.00th=[ 1099], 60.00th=[ 1167], | 70.00th=[ 1234], 80.00th=[ 1318], 90.00th=[ 1418], 95.00th=[ 1519], | 99.00th=[ 1720], 99.50th=[ 1804], 99.90th=[ 1905], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 7, max= 103, per=24.68%, avg=39.00, stdev=17.92, samples=258 iops : min= 1, max= 25, avg= 9.18, stdev= 4.50, samples=258 lat (msec) : 50=0.04%, 100=0.08%, 250=0.20%, 500=24.80%, 750=27.38% lat (msec) : 1000=15.16%, 2000=32.34% cpu : usr=0.12%, sys=0.68%, ctx=4632, 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=153KiB/s (156kB/s), 37.9KiB/s-38.7KiB/s (38.8kB/s-39.6kB/s), io=19.6MiB (20.5MB), run=130773-131535msec WRITE: bw=159KiB/s (163kB/s), 39.6KiB/s-40.1KiB/s (40.5kB/s-41.1kB/s), io=20.4MiB (21.4MB), run=130773-131535msec 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=146867: Tue Jan 13 06:40:57 2026 read: IOPS=1, BW=65.0MiB/s (68.2MB/s)(40.0MiB/615msec) slat (nsec): min=43278k, max=43278k, avg=43278308.00, stdev= 0.00 clat (nsec): min=546478k, max=546478k, avg=546478435.00, stdev= 0.00 lat (nsec): min=589762k, max=589762k, avg=589761833.00, 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=1.95%, ctx=42, 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=65.0MiB/s (68.2MB/s), 65.0MiB/s-65.0MiB/s (68.2MB/s-68.2MB/s), io=40.0MiB (41.9MB), run=615-615msec 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