== sanity test 398c: run fio to test AIO ================= 04:15:36 (1787386536) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.524385 s, 80.0 MB/s osc.lustre-OST0000-osc-ffff8d7ac31e6800.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=145635: Sat Aug 22 04:18:08 2026 write: IOPS=18, BW=72.5KiB/s (74.3kB/s)(10.0MiB/141184msec); 0 zone resets slat (usec): min=36, max=22535, avg=357.97, stdev=1038.42 clat (msec): min=179, max=2083, avg=881.19, stdev=280.76 lat (msec): min=179, max=2083, avg=881.55, stdev=280.78 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 472], 10.00th=[ 575], 20.00th=[ 684], | 30.00th=[ 751], 40.00th=[ 802], 50.00th=[ 860], 60.00th=[ 911], | 70.00th=[ 969], 80.00th=[ 1053], 90.00th=[ 1217], 95.00th=[ 1385], | 99.00th=[ 1804], 99.50th=[ 1972], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2089] bw ( KiB/s): min= 7, max= 254, per=25.62%, avg=74.04, stdev=32.23, samples=272 iops : min= 1, max= 63, avg=17.98, stdev= 8.11, samples=272 lat (msec) : 250=0.62%, 500=5.23%, 750=24.53%, 1000=43.83%, 2000=25.43% lat (msec) : >=2000=0.35% cpu : usr=0.07%, sys=0.37%, ctx=1985, 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=145636: Sat Aug 22 04:18:08 2026 write: IOPS=18, BW=72.6KiB/s (74.3kB/s)(10.0MiB/141138msec); 0 zone resets slat (usec): min=40, max=15113, avg=393.89, stdev=1056.81 clat (msec): min=57, max=2128, avg=880.74, stdev=277.76 lat (msec): min=57, max=2128, avg=881.14, stdev=277.78 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 472], 10.00th=[ 584], 20.00th=[ 684], | 30.00th=[ 743], 40.00th=[ 802], 50.00th=[ 852], 60.00th=[ 919], | 70.00th=[ 969], 80.00th=[ 1045], 90.00th=[ 1200], 95.00th=[ 1401], | 99.00th=[ 1854], 99.50th=[ 1955], 99.90th=[ 2089], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 8, max= 248, per=25.82%, avg=74.62, stdev=33.99, samples=270 iops : min= 2, max= 62, avg=18.13, stdev= 8.53, samples=270 lat (msec) : 100=0.08%, 250=0.08%, 500=6.17%, 750=25.43%, 1000=42.46% lat (msec) : 2000=25.43%, >=2000=0.35% cpu : usr=0.07%, sys=0.41%, ctx=2311, 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=145637: Sat Aug 22 04:18:08 2026 write: IOPS=18, BW=72.5KiB/s (74.3kB/s)(10.0MiB/141185msec); 0 zone resets slat (usec): min=37, max=26030, avg=350.30, stdev=1107.26 clat (msec): min=146, max=2077, avg=881.59, stdev=277.87 lat (msec): min=146, max=2077, avg=881.95, stdev=277.95 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 481], 10.00th=[ 575], 20.00th=[ 693], | 30.00th=[ 751], 40.00th=[ 802], 50.00th=[ 852], 60.00th=[ 911], | 70.00th=[ 969], 80.00th=[ 1053], 90.00th=[ 1200], 95.00th=[ 1401], | 99.00th=[ 1770], 99.50th=[ 1972], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 7, max= 254, per=25.43%, avg=73.50, stdev=32.38, samples=274 iops : min= 1, max= 63, avg=17.84, stdev= 8.11, samples=274 lat (msec) : 250=0.62%, 500=5.12%, 750=24.02%, 1000=43.91%, 2000=26.02% lat (msec) : >=2000=0.31% cpu : usr=0.07%, sys=0.37%, ctx=2102, 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=145638: Sat Aug 22 04:18:08 2026 write: IOPS=18, BW=72.5KiB/s (74.2kB/s)(10.0MiB/141272msec); 0 zone resets slat (usec): min=36, max=24819, avg=378.78, stdev=1087.43 clat (msec): min=238, max=2087, avg=881.59, stdev=274.30 lat (msec): min=239, max=2087, avg=881.97, stdev=274.29 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 472], 10.00th=[ 584], 20.00th=[ 693], | 30.00th=[ 743], 40.00th=[ 793], 50.00th=[ 852], 60.00th=[ 902], | 70.00th=[ 969], 80.00th=[ 1053], 90.00th=[ 1183], 95.00th=[ 1435], | 99.00th=[ 1737], 99.50th=[ 1905], 99.90th=[ 2056], 99.95th=[ 2072], | 99.99th=[ 2089] bw ( KiB/s): min= 7, max= 255, per=25.35%, avg=73.27, stdev=35.44, samples=275 iops : min= 1, max= 63, avg=17.79, stdev= 8.88, samples=275 lat (msec) : 250=0.04%, 500=5.66%, 750=25.43%, 1000=42.81%, 2000=25.74% lat (msec) : >=2000=0.31% cpu : usr=0.08%, sys=0.34%, ctx=1976, 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 Run status group 0 (all jobs): WRITE: bw=290KiB/s (297kB/s), 72.5KiB/s-72.6KiB/s (74.2kB/s-74.3kB/s), io=40.0MiB (41.9MB), run=141138-141272msec 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=145670: Sat Aug 22 04:20:00 2026 read: IOPS=12, BW=48.8KiB/s (49.9kB/s)(5048KiB/103494msec) slat (usec): min=2849, max=59163, avg=15366.07, stdev=7981.38 clat (msec): min=13, max=774, avg=397.54, stdev=107.63 lat (msec): min=20, max=797, avg=412.92, stdev=108.80 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 243], 10.00th=[ 271], 20.00th=[ 313], | 30.00th=[ 338], 40.00th=[ 363], 50.00th=[ 388], 60.00th=[ 414], | 70.00th=[ 443], 80.00th=[ 485], 90.00th=[ 535], 95.00th=[ 592], | 99.00th=[ 718], 99.50th=[ 735], 99.90th=[ 768], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 15, max= 112, per=25.05%, avg=48.35, stdev=21.53, samples=205 iops : min= 3, max= 28, avg=11.58, stdev= 5.39, samples=205 write: IOPS=12, BW=50.2KiB/s (51.4kB/s)(5192KiB/103494msec); 0 zone resets slat (usec): min=38, max=20095, avg=473.41, stdev=1265.25 clat (msec): min=340, max=1953, avg=870.26, stdev=220.93 lat (msec): min=340, max=1955, avg=870.74, stdev=220.94 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 531], 10.00th=[ 617], 20.00th=[ 701], | 30.00th=[ 751], 40.00th=[ 793], 50.00th=[ 852], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 1036], 90.00th=[ 1150], 95.00th=[ 1250], | 99.00th=[ 1552], 99.50th=[ 1620], 99.90th=[ 1871], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 7, max= 111, per=24.74%, avg=49.72, stdev=20.28, samples=204 iops : min= 1, max= 27, avg=11.93, stdev= 5.11, samples=204 lat (msec) : 20=0.04%, 50=0.08%, 100=0.12%, 250=2.97%, 500=39.73% lat (msec) : 750=21.52%, 1000=23.01%, 2000=12.54% cpu : usr=0.11%, sys=0.88%, ctx=5006, 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=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=145671: Sat Aug 22 04:20:00 2026 read: IOPS=12, BW=48.0KiB/s (49.2kB/s)(4976KiB/103650msec) slat (usec): min=3205, max=61494, avg=15832.27, stdev=8392.14 clat (msec): min=27, max=743, avg=393.26, stdev=100.21 lat (msec): min=37, max=762, avg=409.10, stdev=101.34 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 247], 10.00th=[ 275], 20.00th=[ 313], | 30.00th=[ 338], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 409], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 531], 95.00th=[ 575], | 99.00th=[ 651], 99.50th=[ 684], 99.90th=[ 718], 99.95th=[ 743], | 99.99th=[ 743] bw ( KiB/s): min= 7, max= 136, per=24.57%, avg=47.42, stdev=22.06, samples=205 iops : min= 1, max= 34, avg=11.35, stdev= 5.58, samples=205 write: IOPS=12, BW=50.8KiB/s (52.0kB/s)(5264KiB/103650msec); 0 zone resets slat (usec): min=40, max=17286, avg=432.09, stdev=1054.51 clat (msec): min=173, max=1770, avg=870.56, stdev=227.84 lat (msec): min=173, max=1770, avg=870.99, stdev=227.89 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 531], 10.00th=[ 600], 20.00th=[ 693], | 30.00th=[ 751], 40.00th=[ 793], 50.00th=[ 852], 60.00th=[ 911], | 70.00th=[ 969], 80.00th=[ 1036], 90.00th=[ 1150], 95.00th=[ 1267], | 99.00th=[ 1552], 99.50th=[ 1620], 99.90th=[ 1737], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 96, per=24.93%, avg=50.11, stdev=19.05, samples=206 iops : min= 1, max= 24, avg=12.02, stdev= 4.81, samples=206 lat (msec) : 50=0.04%, 100=0.12%, 250=2.58%, 500=40.43%, 750=20.66% lat (msec) : 1000=23.20%, 2000=12.97% cpu : usr=0.10%, sys=0.87%, ctx=4805, majf=0, minf=16 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=145672: Sat Aug 22 04:20:00 2026 read: IOPS=12, BW=48.1KiB/s (49.3kB/s)(4984KiB/103584msec) slat (usec): min=57, max=53033, avg=15590.41, stdev=8538.93 clat (msec): min=13, max=846, avg=398.99, stdev=104.66 lat (msec): min=18, max=876, avg=414.59, stdev=106.29 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 251], 10.00th=[ 284], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 388], 60.00th=[ 409], | 70.00th=[ 439], 80.00th=[ 481], 90.00th=[ 535], 95.00th=[ 592], | 99.00th=[ 693], 99.50th=[ 718], 99.90th=[ 768], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 128, per=24.75%, avg=47.77, stdev=21.80, samples=205 iops : min= 1, max= 32, avg=11.43, stdev= 5.49, samples=205 write: IOPS=12, BW=50.7KiB/s (51.0kB/s)(5256KiB/103584msec); 0 zone resets slat (usec): min=50, max=28156, avg=468.79, stdev=1281.27 clat (msec): min=151, max=1709, avg=866.84, stdev=228.29 lat (msec): min=151, max=1709, avg=867.31, stdev=228.27 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 531], 10.00th=[ 609], 20.00th=[ 693], | 30.00th=[ 743], 40.00th=[ 793], 50.00th=[ 844], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 1036], 90.00th=[ 1150], 95.00th=[ 1267], | 99.00th=[ 1569], 99.50th=[ 1620], 99.90th=[ 1703], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7, max= 119, per=24.87%, avg=49.98, stdev=21.70, samples=205 iops : min= 1, max= 29, avg=11.99, stdev= 5.48, samples=205 lat (msec) : 20=0.08%, 50=0.08%, 100=0.12%, 250=2.23%, 500=40.31% lat (msec) : 750=21.76%, 1000=23.12%, 2000=12.30% cpu : usr=0.10%, sys=0.86%, ctx=4679, 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=145673: Sat Aug 22 04:20:00 2026 read: IOPS=12, BW=48.9KiB/s (50.1kB/s)(5060KiB/103494msec) slat (usec): min=3333, max=57262, avg=15594.90, stdev=8413.04 clat (msec): min=18, max=765, avg=397.67, stdev=103.31 lat (msec): min=35, max=796, avg=413.27, stdev=104.86 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 249], 10.00th=[ 279], 20.00th=[ 313], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 388], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 477], 90.00th=[ 535], 95.00th=[ 584], | 99.00th=[ 693], 99.50th=[ 701], 99.90th=[ 751], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 6, max= 128, per=25.36%, avg=48.95, stdev=21.94, samples=203 iops : min= 1, max= 32, avg=11.73, stdev= 5.53, samples=203 write: IOPS=12, BW=50.1KiB/s (51.3kB/s)(5180KiB/103494msec); 0 zone resets slat (usec): min=43, max=37404, avg=518.81, stdev=1760.20 clat (msec): min=186, max=1824, avg=871.07, stdev=232.17 lat (msec): min=187, max=1825, avg=871.59, stdev=232.22 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 550], 10.00th=[ 609], 20.00th=[ 693], | 30.00th=[ 743], 40.00th=[ 793], 50.00th=[ 835], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 1045], 90.00th=[ 1167], 95.00th=[ 1301], | 99.00th=[ 1569], 99.50th=[ 1670], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 128, per=24.67%, avg=49.58, stdev=20.24, samples=204 iops : min= 1, max= 32, avg=11.89, stdev= 5.12, samples=204 lat (msec) : 20=0.04%, 50=0.16%, 250=2.54%, 500=40.70%, 750=21.60% lat (msec) : 1000=22.15%, 2000=12.81% cpu : usr=0.12%, sys=0.91%, ctx=4660, 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=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=194KiB/s (198kB/s), 48.0KiB/s-48.9KiB/s (49.2kB/s-50.1kB/s), io=19.6MiB (20.5MB), run=103494-103650msec WRITE: bw=202KiB/s (206kB/s), 50.1KiB/s-50.8KiB/s (51.3kB/s-52.0kB/s), io=20.4MiB (21.4MB), run=103494-103650msec 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=145692: Sat Aug 22 04:20:12 2026 read: IOPS=1, BW=51.0MiB/s (53.5MB/s)(40.0MiB/784msec) slat (nsec): min=64494k, max=64494k, avg=64494219.00, stdev= 0.00 clat (nsec): min=673777k, max=673777k, avg=673776698.00, stdev= 0.00 lat (nsec): min=738275k, max=738275k, avg=738275100.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 676], 5.00th=[ 676], 10.00th=[ 676], 20.00th=[ 676], | 30.00th=[ 676], 40.00th=[ 676], 50.00th=[ 676], 60.00th=[ 676], | 70.00th=[ 676], 80.00th=[ 676], 90.00th=[ 676], 95.00th=[ 676], | 99.00th=[ 676], 99.50th=[ 676], 99.90th=[ 676], 99.95th=[ 676], | 99.99th=[ 676] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.66%, ctx=44, 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=51.0MiB/s (53.5MB/s), 51.0MiB/s-51.0MiB/s (53.5MB/s-53.5MB/s), io=40.0MiB (41.9MB), run=784-784msec 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