== sanity test 398c: run fio to test AIO ================= 21:17:48 (1767320268) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.457285 s, 91.7 MB/s osc.lustre-OST0000-osc-ffff94e550986800.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=151565: Thu Jan 1 21:20:42 2026 write: IOPS=15, BW=62.5KiB/s (63.0kB/s)(10.0MiB/163888msec); 0 zone resets slat (usec): min=20, max=26067, avg=183.43, stdev=974.33 clat (msec): min=180, max=2041, avg=1022.85, stdev=291.52 lat (msec): min=180, max=2041, avg=1023.03, stdev=291.56 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 575], 10.00th=[ 651], 20.00th=[ 768], | 30.00th=[ 852], 40.00th=[ 927], 50.00th=[ 1011], 60.00th=[ 1083], | 70.00th=[ 1183], 80.00th=[ 1267], 90.00th=[ 1401], 95.00th=[ 1536], | 99.00th=[ 1770], 99.50th=[ 1804], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 128, per=25.16%, avg=62.65, stdev=32.25, samples=321 iops : min= 1, max= 32, avg=15.24, stdev= 8.09, samples=321 lat (msec) : 250=0.16%, 500=2.11%, 750=16.95%, 1000=28.79%, 2000=51.95% lat (msec) : >=2000=0.04% cpu : usr=0.04%, sys=0.19%, ctx=1682, 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=151566: Thu Jan 1 21:20:42 2026 write: IOPS=15, BW=62.5KiB/s (64.0kB/s)(10.0MiB/163840msec); 0 zone resets slat (usec): min=23, max=19241, avg=175.58, stdev=797.40 clat (msec): min=156, max=2016, avg=1022.73, stdev=293.12 lat (msec): min=156, max=2016, avg=1022.91, stdev=293.12 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 558], 10.00th=[ 651], 20.00th=[ 768], | 30.00th=[ 844], 40.00th=[ 927], 50.00th=[ 1003], 60.00th=[ 1083], | 70.00th=[ 1167], 80.00th=[ 1267], 90.00th=[ 1418], 95.00th=[ 1536], | 99.00th=[ 1754], 99.50th=[ 1821], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 2022] bw ( KiB/s): min= 7, max= 136, per=25.05%, avg=62.38, stdev=26.41, samples=323 iops : min= 1, max= 34, avg=15.17, stdev= 6.63, samples=323 lat (msec) : 250=0.04%, 500=1.60%, 750=16.41%, 1000=31.37%, 2000=50.55% lat (msec) : >=2000=0.04% cpu : usr=0.03%, sys=0.20%, ctx=1878, 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=151567: Thu Jan 1 21:20:42 2026 write: IOPS=15, BW=62.6KiB/s (64.1kB/s)(10.0MiB/163673msec); 0 zone resets slat (usec): min=23, max=19913, avg=171.48, stdev=761.30 clat (msec): min=103, max=2038, avg=1022.50, stdev=293.74 lat (msec): min=103, max=2038, avg=1022.67, stdev=293.75 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 575], 10.00th=[ 659], 20.00th=[ 768], | 30.00th=[ 844], 40.00th=[ 936], 50.00th=[ 1020], 60.00th=[ 1099], | 70.00th=[ 1183], 80.00th=[ 1267], 90.00th=[ 1401], 95.00th=[ 1519], | 99.00th=[ 1804], 99.50th=[ 1854], 99.90th=[ 1888], 99.95th=[ 1888], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 134, per=25.52%, avg=63.55, stdev=32.38, samples=317 iops : min= 1, max= 33, avg=15.46, stdev= 8.14, samples=317 lat (msec) : 250=0.20%, 500=2.23%, 750=16.09%, 1000=29.41%, 2000=52.03% lat (msec) : >=2000=0.04% cpu : usr=0.04%, sys=0.18%, ctx=1551, 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=151568: Thu Jan 1 21:20:42 2026 write: IOPS=15, BW=62.5KiB/s (64.0kB/s)(10.0MiB/163782msec); 0 zone resets slat (usec): min=26, max=21858, avg=191.83, stdev=920.19 clat (msec): min=363, max=2177, avg=1022.23, stdev=290.64 lat (msec): min=363, max=2177, avg=1022.42, stdev=290.70 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 592], 10.00th=[ 651], 20.00th=[ 768], | 30.00th=[ 844], 40.00th=[ 936], 50.00th=[ 1011], 60.00th=[ 1083], | 70.00th=[ 1183], 80.00th=[ 1267], 90.00th=[ 1385], 95.00th=[ 1519], | 99.00th=[ 1787], 99.50th=[ 1854], 99.90th=[ 1905], 99.95th=[ 2022], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 128, per=25.06%, avg=62.39, stdev=26.84, samples=323 iops : min= 1, max= 32, avg=15.16, stdev= 6.73, samples=323 lat (msec) : 500=1.91%, 750=16.72%, 1000=29.88%, 2000=51.41%, >=2000=0.08% cpu : usr=0.03%, sys=0.18%, ctx=1773, 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=250KiB/s (256kB/s), 62.5KiB/s-62.6KiB/s (63.0kB/s-64.1kB/s), io=40.0MiB (41.9MB), run=163673-163888msec 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=151601: Thu Jan 1 21:22:33 2026 read: IOPS=12, BW=48.0KiB/s (50.1kB/s)(5048KiB/103111msec) slat (usec): min=2892, max=70229, avg=13562.46, stdev=7963.35 clat (msec): min=16, max=950, avg=403.08, stdev=112.53 lat (msec): min=22, max=971, avg=416.65, stdev=114.00 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 259], 10.00th=[ 288], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 393], 60.00th=[ 422], | 70.00th=[ 451], 80.00th=[ 489], 90.00th=[ 542], 95.00th=[ 600], | 99.00th=[ 726], 99.50th=[ 776], 99.90th=[ 944], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 119, per=25.08%, avg=48.66, stdev=21.25, samples=204 iops : min= 1, max= 29, avg=11.72, stdev= 5.35, samples=204 write: IOPS=12, BW=50.4KiB/s (51.6kB/s)(5192KiB/103111msec); 0 zone resets slat (usec): min=30, max=18079, avg=250.93, stdev=1016.63 clat (msec): min=198, max=1601, avg=862.34, stdev=226.71 lat (msec): min=198, max=1601, avg=862.59, stdev=226.73 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 477], 10.00th=[ 584], 20.00th=[ 684], | 30.00th=[ 751], 40.00th=[ 802], 50.00th=[ 852], 60.00th=[ 911], | 70.00th=[ 969], 80.00th=[ 1053], 90.00th=[ 1150], 95.00th=[ 1250], | 99.00th=[ 1435], 99.50th=[ 1485], 99.90th=[ 1569], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 7, max= 119, per=24.57%, avg=49.63, stdev=21.01, samples=205 iops : min= 1, max= 29, avg=11.96, stdev= 5.32, samples=205 lat (msec) : 20=0.04%, 50=0.20%, 100=0.16%, 250=2.03%, 500=41.52% lat (msec) : 750=20.47%, 1000=22.93%, 2000=12.66% cpu : usr=0.10%, sys=0.59%, ctx=3997, 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=151602: Thu Jan 1 21:22:33 2026 read: IOPS=12, BW=48.2KiB/s (49.3kB/s)(4976KiB/103308msec) slat (usec): min=2440, max=53946, avg=13379.33, stdev=7708.66 clat (msec): min=19, max=891, avg=393.80, stdev=115.61 lat (msec): min=32, max=913, avg=407.19, stdev=117.25 clat percentiles (msec): | 1.00th=[ 62], 5.00th=[ 230], 10.00th=[ 271], 20.00th=[ 313], | 30.00th=[ 338], 40.00th=[ 355], 50.00th=[ 384], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 481], 90.00th=[ 531], 95.00th=[ 584], | 99.00th=[ 718], 99.50th=[ 776], 99.90th=[ 885], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 7, max= 158, per=24.43%, avg=47.40, stdev=24.22, samples=204 iops : min= 1, max= 39, avg=11.41, stdev= 6.07, samples=204 write: IOPS=12, BW=50.0KiB/s (52.2kB/s)(5264KiB/103308msec); 0 zone resets slat (usec): min=26, max=12805, avg=189.16, stdev=668.43 clat (msec): min=60, max=1575, avg=867.78, stdev=233.18 lat (msec): min=60, max=1575, avg=867.97, stdev=233.19 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 485], 10.00th=[ 584], 20.00th=[ 684], | 30.00th=[ 760], 40.00th=[ 810], 50.00th=[ 869], 60.00th=[ 919], | 70.00th=[ 969], 80.00th=[ 1062], 90.00th=[ 1167], 95.00th=[ 1267], | 99.00th=[ 1401], 99.50th=[ 1469], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 7, max= 120, per=24.88%, avg=50.25, stdev=20.90, samples=204 iops : min= 1, max= 30, avg=12.12, stdev= 5.27, samples=204 lat (msec) : 20=0.04%, 50=0.35%, 100=0.47%, 250=2.73%, 500=40.23% lat (msec) : 750=19.69%, 1000=23.05%, 2000=13.44% cpu : usr=0.09%, sys=0.57%, ctx=4103, 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=151603: Thu Jan 1 21:22:33 2026 read: IOPS=12, BW=48.3KiB/s (49.5kB/s)(4984KiB/103112msec) slat (usec): min=55, max=76594, avg=13667.45, stdev=7744.76 clat (msec): min=21, max=916, avg=397.19, stdev=111.76 lat (msec): min=32, max=932, avg=410.86, stdev=113.29 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 253], 10.00th=[ 279], 20.00th=[ 313], | 30.00th=[ 338], 40.00th=[ 359], 50.00th=[ 384], 60.00th=[ 409], | 70.00th=[ 443], 80.00th=[ 481], 90.00th=[ 542], 95.00th=[ 592], | 99.00th=[ 726], 99.50th=[ 810], 99.90th=[ 902], 99.95th=[ 919], | 99.99th=[ 919] bw ( KiB/s): min= 7, max= 128, per=24.92%, avg=48.34, stdev=22.55, samples=203 iops : min= 1, max= 32, avg=11.64, stdev= 5.72, samples=203 write: IOPS=12, BW=50.0KiB/s (52.2kB/s)(5256KiB/103112msec); 0 zone resets slat (usec): min=27, max=13720, avg=221.67, stdev=775.24 clat (msec): min=143, max=1585, avg=864.67, stdev=234.47 lat (msec): min=144, max=1585, avg=864.90, stdev=234.49 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 485], 10.00th=[ 575], 20.00th=[ 693], | 30.00th=[ 743], 40.00th=[ 802], 50.00th=[ 844], 60.00th=[ 911], | 70.00th=[ 978], 80.00th=[ 1053], 90.00th=[ 1183], 95.00th=[ 1267], | 99.00th=[ 1435], 99.50th=[ 1469], 99.90th=[ 1485], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 7, max= 134, per=25.05%, avg=50.59, stdev=20.20, samples=203 iops : min= 1, max= 33, avg=12.20, stdev= 5.05, samples=203 lat (msec) : 50=0.27%, 100=0.23%, 250=1.88%, 500=41.76%, 750=20.08% lat (msec) : 1000=22.11%, 2000=13.67% cpu : usr=0.10%, sys=0.63%, ctx=4249, 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=151604: Thu Jan 1 21:22:33 2026 read: IOPS=12, BW=49.1KiB/s (50.2kB/s)(5060KiB/103124msec) slat (usec): min=2401, max=58031, avg=13421.74, stdev=7661.62 clat (msec): min=12, max=851, avg=397.11, stdev=105.99 lat (msec): min=33, max=862, avg=410.54, stdev=107.39 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 253], 10.00th=[ 288], 20.00th=[ 321], | 30.00th=[ 338], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 414], | 70.00th=[ 443], 80.00th=[ 477], 90.00th=[ 527], 95.00th=[ 584], | 99.00th=[ 709], 99.50th=[ 743], 99.90th=[ 810], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 158, per=25.56%, avg=49.59, stdev=22.68, samples=201 iops : min= 1, max= 39, avg=11.96, stdev= 5.71, samples=201 write: IOPS=12, BW=50.2KiB/s (51.4kB/s)(5180KiB/103124msec); 0 zone resets slat (usec): min=24, max=9792, avg=176.02, stdev=538.60 clat (msec): min=128, max=1574, avg=869.24, stdev=230.89 lat (msec): min=128, max=1575, avg=869.42, stdev=230.88 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 514], 10.00th=[ 584], 20.00th=[ 684], | 30.00th=[ 743], 40.00th=[ 793], 50.00th=[ 844], 60.00th=[ 902], | 70.00th=[ 978], 80.00th=[ 1070], 90.00th=[ 1183], 95.00th=[ 1267], | 99.00th=[ 1418], 99.50th=[ 1469], 99.90th=[ 1519], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 7, max= 111, per=24.72%, avg=49.94, stdev=20.27, samples=203 iops : min= 1, max= 27, avg=12.04, stdev= 5.12, samples=203 lat (msec) : 20=0.08%, 50=0.12%, 100=0.16%, 250=2.07%, 500=41.95% lat (msec) : 750=20.62%, 1000=21.02%, 2000=13.98% cpu : usr=0.10%, sys=0.58%, ctx=4020, 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=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 (199kB/s), 48.2KiB/s-49.1KiB/s (49.3kB/s-50.2kB/s), io=19.6MiB (20.5MB), run=103111-103308msec WRITE: bw=202KiB/s (207kB/s), 50.2KiB/s-50.0KiB/s (51.4kB/s-52.2kB/s), io=20.4MiB (21.4MB), run=103111-103308msec 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=151624: Thu Jan 1 21:22:43 2026 read: IOPS=1, BW=72.1MiB/s (75.6MB/s)(40.0MiB/555msec) slat (nsec): min=29977k, max=29977k, avg=29977458.00, stdev= 0.00 clat (nsec): min=511298k, max=511298k, avg=511298216.00, stdev= 0.00 lat (nsec): min=541279k, max=541279k, avg=541279494.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=2.71%, ctx=5, majf=0, minf=10 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=72.1MiB/s (75.6MB/s), 72.1MiB/s-72.1MiB/s (75.6MB/s-75.6MB/s), io=40.0MiB (41.9MB), run=555-555msec 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