== sanity test 398c: run fio to test AIO ================= 23:52:18 (1788839538) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.537155 s, 78.1 MB/s osc.lustre-OST0000-osc-ffff8d8077326000.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=145244: Mon Sep 7 23:54:52 2026 write: IOPS=17, BW=70.9KiB/s (72.6kB/s)(10.0MiB/144358msec); 0 zone resets slat (usec): min=22, max=18471, avg=170.25, stdev=769.95 clat (msec): min=177, max=1783, avg=901.00, stdev=247.13 lat (msec): min=177, max=1784, avg=901.17, stdev=247.13 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 558], 10.00th=[ 634], 20.00th=[ 709], | 30.00th=[ 776], 40.00th=[ 835], 50.00th=[ 894], 60.00th=[ 953], | 70.00th=[ 1011], 80.00th=[ 1083], 90.00th=[ 1200], 95.00th=[ 1318], | 99.00th=[ 1586], 99.50th=[ 1653], 99.90th=[ 1770], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 8, max= 242, per=25.16%, avg=71.21, stdev=31.44, samples=283 iops : min= 2, max= 60, avg=17.35, stdev= 7.88, samples=283 lat (msec) : 250=1.25%, 500=2.73%, 750=21.76%, 1000=42.62%, 2000=31.64% cpu : usr=0.04%, sys=0.22%, ctx=1894, 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=145245: Mon Sep 7 23:54:52 2026 write: IOPS=17, BW=71.0KiB/s (72.7kB/s)(10.0MiB/144216msec); 0 zone resets slat (usec): min=22, max=28430, avg=218.32, stdev=1154.24 clat (msec): min=140, max=1826, avg=900.71, stdev=244.63 lat (msec): min=141, max=1826, avg=900.93, stdev=244.62 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 550], 10.00th=[ 625], 20.00th=[ 726], | 30.00th=[ 776], 40.00th=[ 852], 50.00th=[ 894], 60.00th=[ 944], | 70.00th=[ 1003], 80.00th=[ 1083], 90.00th=[ 1200], 95.00th=[ 1318], | 99.00th=[ 1536], 99.50th=[ 1636], 99.90th=[ 1770], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 231, per=24.81%, avg=70.21, stdev=30.69, samples=287 iops : min= 1, max= 57, avg=17.10, stdev= 7.70, samples=287 lat (msec) : 250=1.13%, 500=3.16%, 750=20.43%, 1000=44.73%, 2000=30.55% cpu : usr=0.06%, sys=0.24%, ctx=2227, 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=145246: Mon Sep 7 23:54:52 2026 write: IOPS=17, BW=71.1KiB/s (72.8kB/s)(10.0MiB/144104msec); 0 zone resets slat (usec): min=22, max=18774, avg=191.06, stdev=878.51 clat (msec): min=177, max=1757, avg=899.44, stdev=251.25 lat (msec): min=177, max=1757, avg=899.63, stdev=251.26 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 550], 10.00th=[ 617], 20.00th=[ 701], | 30.00th=[ 776], 40.00th=[ 835], 50.00th=[ 902], 60.00th=[ 944], | 70.00th=[ 1003], 80.00th=[ 1083], 90.00th=[ 1217], 95.00th=[ 1334], | 99.00th=[ 1569], 99.50th=[ 1636], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 216, per=24.91%, avg=70.49, stdev=31.19, samples=286 iops : min= 1, max= 54, avg=17.17, stdev= 7.85, samples=286 lat (msec) : 250=1.33%, 500=2.85%, 750=23.01%, 1000=42.58%, 2000=30.23% cpu : usr=0.06%, sys=0.22%, ctx=1836, 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=145247: Mon Sep 7 23:54:52 2026 write: IOPS=17, BW=70.0KiB/s (72.7kB/s)(10.0MiB/144280msec); 0 zone resets slat (usec): min=21, max=24576, avg=181.79, stdev=915.12 clat (msec): min=176, max=1804, avg=900.50, stdev=247.83 lat (msec): min=176, max=1804, avg=900.69, stdev=247.82 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 542], 10.00th=[ 625], 20.00th=[ 709], | 30.00th=[ 785], 40.00th=[ 835], 50.00th=[ 902], 60.00th=[ 936], | 70.00th=[ 1003], 80.00th=[ 1083], 90.00th=[ 1200], 95.00th=[ 1351], | 99.00th=[ 1536], 99.50th=[ 1653], 99.90th=[ 1770], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 242, per=25.08%, avg=70.98, stdev=30.91, samples=284 iops : min= 1, max= 60, avg=17.30, stdev= 7.76, samples=284 lat (msec) : 250=1.25%, 500=2.73%, 750=20.39%, 1000=45.08%, 2000=30.55% cpu : usr=0.05%, sys=0.22%, ctx=2137, 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=284KiB/s (291kB/s), 70.9KiB/s-71.1KiB/s (72.6kB/s-72.8kB/s), io=40.0MiB (41.9MB), run=144104-144358msec 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=145277: Mon Sep 7 23:56:30 2026 read: IOPS=14, BW=58.0KiB/s (59.4kB/s)(5048KiB/87025msec) slat (usec): min=25, max=41696, avg=12384.22, stdev=6549.65 clat (msec): min=13, max=629, avg=340.39, stdev=85.23 lat (msec): min=19, max=637, avg=352.78, stdev=86.23 clat percentiles (msec): | 1.00th=[ 70], 5.00th=[ 224], 10.00th=[ 247], 20.00th=[ 279], | 30.00th=[ 296], 40.00th=[ 313], 50.00th=[ 330], 60.00th=[ 355], | 70.00th=[ 380], 80.00th=[ 414], 90.00th=[ 460], 95.00th=[ 489], | 99.00th=[ 542], 99.50th=[ 567], 99.90th=[ 575], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 134, per=25.08%, avg=57.42, stdev=23.51, samples=173 iops : min= 1, max= 33, avg=13.95, stdev= 5.89, samples=173 write: IOPS=14, BW=59.7KiB/s (61.1kB/s)(5192KiB/87025msec); 0 zone resets slat (usec): min=23, max=22380, avg=237.44, stdev=913.21 clat (msec): min=144, max=1311, avg=729.05, stdev=183.25 lat (msec): min=144, max=1311, avg=729.28, stdev=183.24 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 439], 10.00th=[ 506], 20.00th=[ 575], | 30.00th=[ 634], 40.00th=[ 684], 50.00th=[ 718], 60.00th=[ 768], | 70.00th=[ 818], 80.00th=[ 894], 90.00th=[ 969], 95.00th=[ 1036], | 99.00th=[ 1167], 99.50th=[ 1217], 99.90th=[ 1267], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 15, max= 117, per=24.73%, avg=58.86, stdev=21.28, samples=173 iops : min= 3, max= 29, avg=14.31, stdev= 5.35, samples=173 lat (msec) : 20=0.12%, 50=0.27%, 100=0.23%, 250=5.39%, 500=46.45% lat (msec) : 750=25.98%, 1000=18.01%, 2000=3.55% cpu : usr=0.11%, sys=0.69%, ctx=4920, 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=145278: Mon Sep 7 23:56:30 2026 read: IOPS=14, BW=56.8KiB/s (58.2kB/s)(4976KiB/87607msec) slat (usec): min=2286, max=53635, avg=12093.02, stdev=6461.30 clat (msec): min=19, max=631, avg=342.39, stdev=80.10 lat (msec): min=28, max=642, avg=354.49, stdev=80.90 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 230], 10.00th=[ 251], 20.00th=[ 279], | 30.00th=[ 300], 40.00th=[ 317], 50.00th=[ 334], 60.00th=[ 355], | 70.00th=[ 376], 80.00th=[ 405], 90.00th=[ 456], 95.00th=[ 485], | 99.00th=[ 558], 99.50th=[ 575], 99.90th=[ 617], 99.95th=[ 634], | 99.99th=[ 634] bw ( KiB/s): min= 7, max= 119, per=24.65%, avg=56.45, stdev=22.28, samples=173 iops : min= 1, max= 29, avg=13.71, stdev= 5.58, samples=173 write: IOPS=15, BW=60.1KiB/s (61.5kB/s)(5264KiB/87607msec); 0 zone resets slat (usec): min=22, max=16139, avg=270.27, stdev=1059.04 clat (msec): min=258, max=1333, avg=727.61, stdev=186.25 lat (msec): min=258, max=1333, avg=727.88, stdev=186.26 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 435], 10.00th=[ 498], 20.00th=[ 558], | 30.00th=[ 625], 40.00th=[ 676], 50.00th=[ 718], 60.00th=[ 768], | 70.00th=[ 827], 80.00th=[ 885], 90.00th=[ 978], 95.00th=[ 1053], | 99.00th=[ 1183], 99.50th=[ 1234], 99.90th=[ 1301], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 8, max= 128, per=25.05%, avg=59.63, stdev=21.82, samples=174 iops : min= 2, max= 32, avg=14.49, stdev= 5.48, samples=174 lat (msec) : 20=0.04%, 50=0.04%, 100=0.20%, 250=4.61%, 500=47.30% lat (msec) : 750=25.78%, 1000=18.05%, 2000=3.98% cpu : usr=0.11%, sys=0.71%, ctx=4897, 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=145279: Mon Sep 7 23:56:30 2026 read: IOPS=14, BW=56.9KiB/s (58.3kB/s)(4984KiB/87613msec) slat (usec): min=2415, max=44898, avg=12537.02, stdev=6871.30 clat (msec): min=19, max=622, avg=340.45, stdev=79.81 lat (msec): min=35, max=631, avg=353.00, stdev=80.55 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 232], 10.00th=[ 249], 20.00th=[ 275], | 30.00th=[ 296], 40.00th=[ 313], 50.00th=[ 334], 60.00th=[ 355], | 70.00th=[ 376], 80.00th=[ 405], 90.00th=[ 451], 95.00th=[ 485], | 99.00th=[ 542], 99.50th=[ 558], 99.90th=[ 609], 99.95th=[ 625], | 99.99th=[ 625] bw ( KiB/s): min= 8, max= 128, per=24.80%, avg=56.80, stdev=23.62, samples=173 iops : min= 2, max= 32, avg=13.79, stdev= 5.96, samples=173 write: IOPS=14, BW=59.0KiB/s (61.4kB/s)(5256KiB/87613msec); 0 zone resets slat (usec): min=22, max=14967, avg=217.31, stdev=775.97 clat (msec): min=144, max=1370, avg=729.81, stdev=184.44 lat (msec): min=144, max=1371, avg=730.03, stdev=184.42 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 435], 10.00th=[ 506], 20.00th=[ 575], | 30.00th=[ 625], 40.00th=[ 676], 50.00th=[ 718], 60.00th=[ 768], | 70.00th=[ 827], 80.00th=[ 885], 90.00th=[ 969], 95.00th=[ 1036], | 99.00th=[ 1200], 99.50th=[ 1234], 99.90th=[ 1318], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 7, max= 104, per=24.90%, avg=59.26, stdev=19.84, samples=174 iops : min= 1, max= 26, avg=14.41, stdev= 4.99, samples=174 lat (msec) : 20=0.04%, 50=0.12%, 100=0.16%, 250=5.20%, 500=46.56% lat (msec) : 750=25.59%, 1000=18.59%, 2000=3.75% cpu : usr=0.12%, sys=0.64%, ctx=4714, 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=145280: Mon Sep 7 23:56:30 2026 read: IOPS=14, BW=58.0KiB/s (59.4kB/s)(5060KiB/87184msec) slat (usec): min=2766, max=42587, avg=12271.47, stdev=6539.94 clat (msec): min=23, max=588, avg=342.38, stdev=80.90 lat (msec): min=41, max=617, avg=354.66, stdev=81.27 clat percentiles (msec): | 1.00th=[ 134], 5.00th=[ 230], 10.00th=[ 255], 20.00th=[ 279], | 30.00th=[ 300], 40.00th=[ 317], 50.00th=[ 334], 60.00th=[ 355], | 70.00th=[ 380], 80.00th=[ 405], 90.00th=[ 456], 95.00th=[ 485], | 99.00th=[ 542], 99.50th=[ 558], 99.90th=[ 584], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 8, max= 127, per=25.19%, avg=57.68, stdev=21.75, samples=173 iops : min= 2, max= 31, avg=14.01, stdev= 5.45, samples=173 write: IOPS=14, BW=59.4KiB/s (60.8kB/s)(5180KiB/87184msec); 0 zone resets slat (usec): min=31, max=18089, avg=222.67, stdev=796.75 clat (msec): min=159, max=1371, avg=728.24, stdev=181.82 lat (msec): min=159, max=1371, avg=728.47, stdev=181.82 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 439], 10.00th=[ 498], 20.00th=[ 575], | 30.00th=[ 625], 40.00th=[ 676], 50.00th=[ 718], 60.00th=[ 768], | 70.00th=[ 818], 80.00th=[ 894], 90.00th=[ 969], 95.00th=[ 1045], | 99.00th=[ 1183], 99.50th=[ 1234], 99.90th=[ 1351], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 15, max= 120, per=24.68%, avg=58.73, stdev=21.80, samples=173 iops : min= 3, max= 30, avg=14.27, stdev= 5.49, samples=173 lat (msec) : 50=0.16%, 100=0.31%, 250=3.95%, 500=48.55%, 750=25.55% lat (msec) : 1000=17.93%, 2000=3.55% cpu : usr=0.13%, sys=0.63%, ctx=4692, 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=229KiB/s (235kB/s), 56.8KiB/s-58.0KiB/s (58.2kB/s-59.4kB/s), io=19.6MiB (20.5MB), run=87025-87613msec WRITE: bw=238KiB/s (244kB/s), 59.4KiB/s-60.1KiB/s (60.8kB/s-61.5kB/s), io=20.4MiB (21.4MB), run=87025-87613msec 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=145297: Mon Sep 7 23:56:38 2026 read: IOPS=1, BW=77.2MiB/s (80.0MB/s)(40.0MiB/518msec) slat (nsec): min=27477k, max=27477k, avg=27476762.00, stdev= 0.00 clat (nsec): min=464762k, max=464762k, avg=464761514.00, stdev= 0.00 lat (nsec): min=492243k, max=492243k, avg=492242781.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 464], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.13%, 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=77.2MiB/s (80.0MB/s), 77.2MiB/s-77.2MiB/s (80.0MB/s-80.0MB/s), io=40.0MiB (41.9MB), run=518-518msec 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