== sanity test 398c: run fio to test AIO ================= 10:21:35 (1786803695) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.522076 s, 80.3 MB/s osc.lustre-OST0000-osc-ffff9a7e7149d800.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=147418: Sat Aug 15 10:24:19 2026 write: IOPS=16, BW=66.1KiB/s (67.7kB/s)(10.0MiB/154813msec); 0 zone resets slat (usec): min=48, max=15088, avg=339.48, stdev=829.10 clat (msec): min=78, max=2461, avg=966.95, stdev=289.96 lat (msec): min=78, max=2461, avg=967.29, stdev=289.91 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 584], 10.00th=[ 651], 20.00th=[ 743], | 30.00th=[ 818], 40.00th=[ 885], 50.00th=[ 944], 60.00th=[ 995], | 70.00th=[ 1062], 80.00th=[ 1167], 90.00th=[ 1334], 95.00th=[ 1485], | 99.00th=[ 1804], 99.50th=[ 2005], 99.90th=[ 2265], 99.95th=[ 2467], | 99.99th=[ 2467] bw ( KiB/s): min= 7, max= 222, per=24.92%, avg=65.80, stdev=30.08, samples=306 iops : min= 1, max= 55, avg=15.96, stdev= 7.55, samples=306 lat (msec) : 100=0.04%, 250=0.90%, 500=1.88%, 750=17.89%, 1000=40.20% lat (msec) : 2000=38.59%, >=2000=0.51% cpu : usr=0.04%, sys=0.32%, ctx=2548, 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=147419: Sat Aug 15 10:24:19 2026 write: IOPS=16, BW=66.1KiB/s (67.7kB/s)(10.0MiB/154979msec); 0 zone resets slat (usec): min=46, max=19746, avg=330.80, stdev=908.99 clat (msec): min=203, max=2642, avg=967.14, stdev=293.20 lat (msec): min=203, max=2642, avg=967.48, stdev=293.16 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 575], 10.00th=[ 659], 20.00th=[ 760], | 30.00th=[ 810], 40.00th=[ 877], 50.00th=[ 927], 60.00th=[ 986], | 70.00th=[ 1070], 80.00th=[ 1167], 90.00th=[ 1334], 95.00th=[ 1485], | 99.00th=[ 1854], 99.50th=[ 2123], 99.90th=[ 2601], 99.95th=[ 2635], | 99.99th=[ 2635] bw ( KiB/s): min= 7, max= 166, per=25.02%, avg=66.05, stdev=31.11, samples=305 iops : min= 1, max= 41, avg=16.02, stdev= 7.79, samples=305 lat (msec) : 250=0.82%, 500=1.99%, 750=16.48%, 1000=43.01%, 2000=37.11% lat (msec) : >=2000=0.59% cpu : usr=0.05%, sys=0.31%, ctx=2433, 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=147420: Sat Aug 15 10:24:19 2026 write: IOPS=16, BW=66.2KiB/s (67.8kB/s)(10.0MiB/154671msec); 0 zone resets slat (usec): min=39, max=19246, avg=328.86, stdev=925.76 clat (msec): min=226, max=2387, avg=965.43, stdev=292.41 lat (msec): min=227, max=2387, avg=965.76, stdev=292.38 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 584], 10.00th=[ 642], 20.00th=[ 743], | 30.00th=[ 818], 40.00th=[ 877], 50.00th=[ 936], 60.00th=[ 995], | 70.00th=[ 1062], 80.00th=[ 1167], 90.00th=[ 1334], 95.00th=[ 1485], | 99.00th=[ 1804], 99.50th=[ 1972], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2400] bw ( KiB/s): min= 7, max= 254, per=24.77%, avg=65.39, stdev=33.35, samples=308 iops : min= 1, max= 63, avg=15.86, stdev= 8.36, samples=308 lat (msec) : 250=1.25%, 500=1.56%, 750=18.44%, 1000=39.88%, 2000=38.40% lat (msec) : >=2000=0.47% cpu : usr=0.05%, sys=0.29%, ctx=2276, 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=147421: Sat Aug 15 10:24:19 2026 write: IOPS=16, BW=66.1KiB/s (67.7kB/s)(10.0MiB/154955msec); 0 zone resets slat (usec): min=50, max=15039, avg=288.45, stdev=735.52 clat (msec): min=218, max=2544, avg=967.15, stdev=288.69 lat (msec): min=218, max=2545, avg=967.45, stdev=288.69 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 575], 10.00th=[ 634], 20.00th=[ 743], | 30.00th=[ 818], 40.00th=[ 877], 50.00th=[ 936], 60.00th=[ 995], | 70.00th=[ 1070], 80.00th=[ 1167], 90.00th=[ 1318], 95.00th=[ 1485], | 99.00th=[ 1821], 99.50th=[ 2005], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2534] bw ( KiB/s): min= 7, max= 128, per=24.92%, avg=65.78, stdev=31.78, samples=306 iops : min= 1, max= 32, avg=15.95, stdev= 7.99, samples=306 lat (msec) : 250=0.62%, 500=2.50%, 750=17.97%, 1000=40.04%, 2000=38.32% lat (msec) : >=2000=0.55% cpu : usr=0.04%, sys=0.30%, ctx=2301, 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=264KiB/s (271kB/s), 66.1KiB/s-66.2KiB/s (67.7kB/s-67.8kB/s), io=40.0MiB (41.9MB), run=154671-154979msec 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=147453: Sat Aug 15 10:26:06 2026 read: IOPS=12, BW=50.2KiB/s (51.4kB/s)(5048KiB/100613msec) slat (usec): min=2934, max=63750, avg=13305.65, stdev=7620.01 clat (msec): min=17, max=956, avg=394.82, stdev=116.30 lat (msec): min=26, max=961, avg=408.13, stdev=117.91 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 243], 10.00th=[ 275], 20.00th=[ 309], | 30.00th=[ 334], 40.00th=[ 359], 50.00th=[ 384], 60.00th=[ 409], | 70.00th=[ 439], 80.00th=[ 472], 90.00th=[ 527], 95.00th=[ 592], | 99.00th=[ 802], 99.50th=[ 852], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 120, per=25.01%, avg=49.76, stdev=21.69, samples=199 iops : min= 1, max= 30, avg=11.95, stdev= 5.50, samples=199 write: IOPS=12, BW=51.6KiB/s (52.8kB/s)(5192KiB/100613msec); 0 zone resets slat (usec): min=56, max=22852, avg=401.76, stdev=1284.75 clat (msec): min=245, max=1782, avg=840.47, stdev=255.07 lat (msec): min=245, max=1783, avg=840.88, stdev=255.08 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 481], 10.00th=[ 550], 20.00th=[ 625], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 810], 60.00th=[ 869], | 70.00th=[ 927], 80.00th=[ 1011], 90.00th=[ 1200], 95.00th=[ 1334], | 99.00th=[ 1586], 99.50th=[ 1653], 99.90th=[ 1737], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 135, per=24.82%, avg=51.37, stdev=21.54, samples=198 iops : min= 1, max= 33, avg=12.35, stdev= 5.40, samples=198 lat (msec) : 20=0.04%, 50=0.16%, 100=0.35%, 250=2.54%, 500=41.72% lat (msec) : 750=23.63%, 1000=20.66%, 2000=10.90% cpu : usr=0.08%, sys=0.74%, ctx=4844, 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=147454: Sat Aug 15 10:26:06 2026 read: IOPS=12, BW=49.4KiB/s (50.6kB/s)(4976KiB/100668msec) slat (usec): min=2715, max=62858, avg=13460.46, stdev=7742.17 clat (msec): min=13, max=921, avg=394.24, stdev=119.26 lat (msec): min=20, max=943, avg=407.71, stdev=121.47 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 236], 10.00th=[ 268], 20.00th=[ 300], | 30.00th=[ 330], 40.00th=[ 355], 50.00th=[ 380], 60.00th=[ 405], | 70.00th=[ 439], 80.00th=[ 481], 90.00th=[ 542], 95.00th=[ 617], | 99.00th=[ 735], 99.50th=[ 844], 99.90th=[ 860], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 120, per=24.60%, avg=48.95, stdev=22.81, samples=199 iops : min= 1, max= 30, avg=11.74, stdev= 5.74, samples=199 write: IOPS=13, BW=52.3KiB/s (53.5kB/s)(5264KiB/100668msec); 0 zone resets slat (usec): min=54, max=20918, avg=407.40, stdev=1048.56 clat (msec): min=270, max=1858, avg=836.44, stdev=254.75 lat (msec): min=271, max=1859, avg=836.85, stdev=254.72 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 485], 10.00th=[ 550], 20.00th=[ 634], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 802], 60.00th=[ 869], | 70.00th=[ 927], 80.00th=[ 1011], 90.00th=[ 1167], 95.00th=[ 1301], | 99.00th=[ 1569], 99.50th=[ 1687], 99.90th=[ 1787], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 127, per=25.08%, avg=51.92, stdev=21.50, samples=199 iops : min= 1, max= 31, avg=12.49, stdev= 5.43, samples=199 lat (msec) : 20=0.08%, 50=0.12%, 100=0.27%, 250=2.77%, 500=40.74% lat (msec) : 750=24.80%, 1000=19.92%, 2000=11.29% cpu : usr=0.12%, sys=0.75%, ctx=4943, 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=147455: Sat Aug 15 10:26:06 2026 read: IOPS=12, BW=49.5KiB/s (50.7kB/s)(4984KiB/100612msec) slat (usec): min=63, max=76686, avg=13078.64, stdev=7560.03 clat (msec): min=11, max=887, avg=385.50, stdev=110.82 lat (msec): min=17, max=895, avg=398.59, stdev=112.99 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 236], 10.00th=[ 264], 20.00th=[ 300], | 30.00th=[ 330], 40.00th=[ 351], 50.00th=[ 380], 60.00th=[ 401], | 70.00th=[ 430], 80.00th=[ 464], 90.00th=[ 523], 95.00th=[ 584], | 99.00th=[ 726], 99.50th=[ 793], 99.90th=[ 860], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7, max= 120, per=24.97%, avg=49.69, stdev=25.92, samples=197 iops : min= 1, max= 30, avg=11.93, stdev= 6.54, samples=197 write: IOPS=13, BW=52.2KiB/s (53.5kB/s)(5256KiB/100612msec); 0 zone resets slat (usec): min=52, max=17211, avg=433.65, stdev=1124.47 clat (msec): min=119, max=1773, avg=845.91, stdev=259.63 lat (msec): min=119, max=1773, avg=846.35, stdev=259.68 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 472], 10.00th=[ 567], 20.00th=[ 642], | 30.00th=[ 709], 40.00th=[ 760], 50.00th=[ 810], 60.00th=[ 869], | 70.00th=[ 936], 80.00th=[ 1028], 90.00th=[ 1200], 95.00th=[ 1334], | 99.00th=[ 1603], 99.50th=[ 1653], 99.90th=[ 1737], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 8, max= 127, per=24.82%, avg=51.37, stdev=20.14, samples=200 iops : min= 2, max= 31, avg=12.35, stdev= 5.01, samples=200 lat (msec) : 20=0.12%, 50=0.12%, 100=0.27%, 250=3.32%, 500=41.95% lat (msec) : 750=22.27%, 1000=20.12%, 2000=11.84% cpu : usr=0.09%, sys=0.73%, ctx=4767, 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=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=147456: Sat Aug 15 10:26:06 2026 read: IOPS=12, BW=50.3KiB/s (51.5kB/s)(5060KiB/100611msec) slat (usec): min=2473, max=60046, avg=13171.51, stdev=7137.91 clat (msec): min=25, max=931, avg=391.09, stdev=111.47 lat (msec): min=32, max=949, avg=404.26, stdev=112.99 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 239], 10.00th=[ 271], 20.00th=[ 309], | 30.00th=[ 330], 40.00th=[ 355], 50.00th=[ 380], 60.00th=[ 405], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 518], 95.00th=[ 592], | 99.00th=[ 726], 99.50th=[ 810], 99.90th=[ 894], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 7, max= 141, per=25.22%, avg=50.19, stdev=23.11, samples=198 iops : min= 1, max= 35, avg=12.05, stdev= 5.83, samples=198 write: IOPS=12, BW=51.5KiB/s (52.7kB/s)(5180KiB/100611msec); 0 zone resets slat (usec): min=53, max=14317, avg=399.51, stdev=1011.72 clat (msec): min=242, max=1830, avg=845.82, stdev=262.23 lat (msec): min=242, max=1830, avg=846.22, stdev=262.22 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 489], 10.00th=[ 558], 20.00th=[ 625], | 30.00th=[ 701], 40.00th=[ 760], 50.00th=[ 818], 60.00th=[ 877], | 70.00th=[ 936], 80.00th=[ 1028], 90.00th=[ 1200], 95.00th=[ 1351], | 99.00th=[ 1653], 99.50th=[ 1703], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 8, max= 119, per=24.60%, avg=50.92, stdev=20.37, samples=199 iops : min= 2, max= 29, avg=12.24, stdev= 5.11, samples=199 lat (msec) : 50=0.16%, 100=0.27%, 250=2.66%, 500=42.27%, 750=23.05% lat (msec) : 1000=20.35%, 2000=11.25% cpu : usr=0.12%, sys=0.73%, ctx=4703, 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=199KiB/s (204kB/s), 49.4KiB/s-50.3KiB/s (50.6kB/s-51.5kB/s), io=19.6MiB (20.5MB), run=100611-100668msec WRITE: bw=208KiB/s (213kB/s), 51.5KiB/s-52.3KiB/s (52.7kB/s-53.5kB/s), io=20.4MiB (21.4MB), run=100611-100668msec 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=147475: Sat Aug 15 10:26:14 2026 read: IOPS=2, BW=91.5MiB/s (95.0MB/s)(40.0MiB/437msec) slat (nsec): min=23868k, max=23868k, avg=23867578.00, stdev= 0.00 clat (nsec): min=380279k, max=380279k, avg=380278541.00, stdev= 0.00 lat (nsec): min=404150k, max=404150k, avg=404149759.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 380], 95.00th=[ 380], | 99.00th=[ 380], 99.50th=[ 380], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.75%, ctx=17, 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=91.5MiB/s (95.0MB/s), 91.5MiB/s-91.5MiB/s (95.0MB/s-95.0MB/s), io=40.0MiB (41.9MB), run=437-437msec 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