== sanity test 398c: run fio to test AIO ================= 05:17:24 (1779873444) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.275132 s, 152 MB/s osc.lustre-OST0000-osc-ffff93a54c4e9000.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=149681: Wed May 27 05:20:34 2026 write: IOPS=14, BW=56.9KiB/s (58.3kB/s)(10.0MiB/179882msec); 0 zone resets slat (usec): min=47, max=41076, avg=265.75, stdev=1006.00 clat (msec): min=254, max=3150, avg=1123.10, stdev=361.30 lat (msec): min=255, max=3150, avg=1123.37, stdev=361.28 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 625], 10.00th=[ 743], 20.00th=[ 860], | 30.00th=[ 944], 40.00th=[ 1028], 50.00th=[ 1099], 60.00th=[ 1167], | 70.00th=[ 1250], 80.00th=[ 1385], 90.00th=[ 1519], 95.00th=[ 1670], | 99.00th=[ 2265], 99.50th=[ 2735], 99.90th=[ 3071], 99.95th=[ 3071], | 99.99th=[ 3138] bw ( KiB/s): min= 7, max= 232, per=25.02%, avg=56.80, stdev=30.50, samples=354 iops : min= 1, max= 58, avg=13.73, stdev= 7.67, samples=354 lat (msec) : 500=4.06%, 750=6.80%, 1000=25.82%, 2000=61.09%, >=2000=2.23% cpu : usr=0.04%, sys=0.22%, ctx=2182, 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=149682: Wed May 27 05:20:34 2026 write: IOPS=14, BW=57.1KiB/s (58.4kB/s)(10.0MiB/179427msec); 0 zone resets slat (usec): min=44, max=15285, avg=267.55, stdev=822.71 clat (msec): min=70, max=3173, avg=1120.08, stdev=363.11 lat (msec): min=70, max=3173, avg=1120.35, stdev=363.11 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 625], 10.00th=[ 743], 20.00th=[ 860], | 30.00th=[ 944], 40.00th=[ 1020], 50.00th=[ 1099], 60.00th=[ 1167], | 70.00th=[ 1250], 80.00th=[ 1368], 90.00th=[ 1536], 95.00th=[ 1670], | 99.00th=[ 2265], 99.50th=[ 2769], 99.90th=[ 3138], 99.95th=[ 3138], | 99.99th=[ 3171] bw ( KiB/s): min= 7, max= 200, per=25.17%, avg=57.14, stdev=28.31, samples=352 iops : min= 1, max= 50, avg=13.82, stdev= 7.10, samples=352 lat (msec) : 100=0.04%, 250=0.12%, 500=3.75%, 750=6.56%, 1000=27.07% lat (msec) : 2000=60.27%, >=2000=2.19% cpu : usr=0.03%, sys=0.25%, ctx=2073, 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=149683: Wed May 27 05:20:34 2026 write: IOPS=14, BW=56.0KiB/s (58.3kB/s)(10.0MiB/179742msec); 0 zone resets slat (usec): min=39, max=16655, avg=260.45, stdev=799.97 clat (msec): min=261, max=2889, avg=1122.20, stdev=353.41 lat (msec): min=261, max=2889, avg=1122.47, stdev=353.41 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 642], 10.00th=[ 743], 20.00th=[ 860], | 30.00th=[ 944], 40.00th=[ 1020], 50.00th=[ 1099], 60.00th=[ 1167], | 70.00th=[ 1267], 80.00th=[ 1385], 90.00th=[ 1536], 95.00th=[ 1687], | 99.00th=[ 2333], 99.50th=[ 2433], 99.90th=[ 2769], 99.95th=[ 2903], | 99.99th=[ 2903] bw ( KiB/s): min= 7, max= 255, per=26.30%, avg=59.69, stdev=28.85, samples=337 iops : min= 1, max= 63, avg=14.46, stdev= 7.24, samples=337 lat (msec) : 500=3.20%, 750=7.27%, 1000=26.84%, 2000=60.59%, >=2000=2.11% cpu : usr=0.03%, sys=0.23%, ctx=2067, 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=149684: Wed May 27 05:20:34 2026 write: IOPS=14, BW=56.0KiB/s (58.3kB/s)(10.0MiB/179799msec); 0 zone resets slat (usec): min=41, max=20687, avg=268.67, stdev=885.01 clat (msec): min=70, max=3176, avg=1123.12, stdev=363.94 lat (msec): min=70, max=3177, avg=1123.39, stdev=363.96 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 625], 10.00th=[ 743], 20.00th=[ 860], | 30.00th=[ 944], 40.00th=[ 1020], 50.00th=[ 1099], 60.00th=[ 1183], | 70.00th=[ 1267], 80.00th=[ 1368], 90.00th=[ 1552], 95.00th=[ 1670], | 99.00th=[ 2265], 99.50th=[ 2668], 99.90th=[ 2970], 99.95th=[ 3138], | 99.99th=[ 3171] bw ( KiB/s): min= 7, max= 240, per=25.17%, avg=57.13, stdev=33.89, samples=352 iops : min= 1, max= 60, avg=13.82, stdev= 8.48, samples=352 lat (msec) : 100=0.04%, 250=0.20%, 500=4.14%, 750=6.17%, 1000=27.46% lat (msec) : 2000=59.92%, >=2000=2.07% cpu : usr=0.03%, sys=0.25%, ctx=2149, 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=228KiB/s (233kB/s), 56.9KiB/s-57.1KiB/s (58.3kB/s-58.4kB/s), io=40.0MiB (41.9MB), run=179427-179882msec 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=149721: Wed May 27 05:22:22 2026 read: IOPS=12, BW=50.9KiB/s (52.1kB/s)(5048KiB/99179msec) slat (usec): min=63, max=44723, avg=12618.26, stdev=6812.36 clat (msec): min=17, max=1071, avg=386.87, stdev=118.62 lat (msec): min=25, max=1078, avg=399.49, stdev=119.81 clat percentiles (msec): | 1.00th=[ 31], 5.00th=[ 243], 10.00th=[ 271], 20.00th=[ 300], | 30.00th=[ 326], 40.00th=[ 351], 50.00th=[ 376], 60.00th=[ 397], | 70.00th=[ 426], 80.00th=[ 464], 90.00th=[ 535], 95.00th=[ 600], | 99.00th=[ 760], 99.50th=[ 793], 99.90th=[ 1003], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 117, per=25.27%, avg=50.53, stdev=22.28, samples=196 iops : min= 1, max= 29, avg=12.13, stdev= 5.64, samples=196 write: IOPS=13, BW=52.3KiB/s (53.6kB/s)(5192KiB/99179msec); 0 zone resets slat (usec): min=56, max=27540, avg=361.78, stdev=1149.74 clat (msec): min=176, max=1797, avg=832.73, stdev=260.10 lat (msec): min=176, max=1797, avg=833.10, stdev=260.06 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 460], 10.00th=[ 550], 20.00th=[ 625], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 802], 60.00th=[ 852], | 70.00th=[ 936], 80.00th=[ 1028], 90.00th=[ 1150], 95.00th=[ 1318], | 99.00th=[ 1670], 99.50th=[ 1720], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 103, per=24.94%, avg=52.13, stdev=21.65, samples=195 iops : min= 1, max= 25, avg=12.54, stdev= 5.42, samples=195 lat (msec) : 20=0.08%, 50=0.55%, 100=0.12%, 250=2.89%, 500=42.50% lat (msec) : 750=22.85%, 1000=19.57%, 2000=11.45% cpu : usr=0.11%, sys=0.73%, ctx=5058, 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=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=149722: Wed May 27 05:22:22 2026 read: IOPS=12, BW=49.8KiB/s (51.0kB/s)(4976KiB/99860msec) slat (usec): min=3021, max=56589, avg=13029.29, stdev=7279.21 clat (msec): min=12, max=812, avg=386.59, stdev=105.68 lat (msec): min=24, max=842, avg=399.62, stdev=107.28 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 241], 10.00th=[ 268], 20.00th=[ 300], | 30.00th=[ 326], 40.00th=[ 355], 50.00th=[ 372], 60.00th=[ 397], | 70.00th=[ 422], 80.00th=[ 468], 90.00th=[ 527], 95.00th=[ 584], | 99.00th=[ 735], 99.50th=[ 743], 99.90th=[ 793], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 126, per=24.81%, avg=49.63, stdev=22.83, samples=196 iops : min= 1, max= 31, avg=11.91, stdev= 5.75, samples=196 write: IOPS=13, BW=52.7KiB/s (53.0kB/s)(5264KiB/99860msec); 0 zone resets slat (usec): min=55, max=14352, avg=358.62, stdev=944.61 clat (msec): min=251, max=1790, avg=834.15, stdev=262.12 lat (msec): min=252, max=1790, avg=834.52, stdev=262.11 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 447], 10.00th=[ 523], 20.00th=[ 625], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 802], 60.00th=[ 860], | 70.00th=[ 936], 80.00th=[ 1028], 90.00th=[ 1167], 95.00th=[ 1318], | 99.00th=[ 1636], 99.50th=[ 1720], 99.90th=[ 1770], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 151, per=25.07%, avg=52.40, stdev=23.07, samples=197 iops : min= 1, max= 37, avg=12.60, stdev= 5.77, samples=197 lat (msec) : 20=0.04%, 100=0.08%, 250=3.24%, 500=42.85%, 750=22.54% lat (msec) : 1000=19.53%, 2000=11.72% cpu : usr=0.08%, sys=0.68%, ctx=4963, 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=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=149723: Wed May 27 05:22:22 2026 read: IOPS=12, BW=49.9KiB/s (51.1kB/s)(4984KiB/99862msec) slat (usec): min=2130, max=50856, avg=13136.61, stdev=7259.36 clat (msec): min=18, max=803, avg=389.49, stdev=112.02 lat (msec): min=24, max=810, avg=402.63, stdev=113.36 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 239], 10.00th=[ 262], 20.00th=[ 305], | 30.00th=[ 330], 40.00th=[ 355], 50.00th=[ 372], 60.00th=[ 401], | 70.00th=[ 430], 80.00th=[ 472], 90.00th=[ 542], 95.00th=[ 592], | 99.00th=[ 726], 99.50th=[ 743], 99.90th=[ 793], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 127, per=24.80%, avg=49.60, stdev=22.17, samples=197 iops : min= 1, max= 31, avg=11.90, stdev= 5.57, samples=197 write: IOPS=13, BW=52.6KiB/s (53.9kB/s)(5256KiB/99862msec); 0 zone resets slat (usec): min=53, max=19485, avg=386.49, stdev=1180.08 clat (msec): min=255, max=1765, avg=831.77, stdev=257.64 lat (msec): min=260, max=1766, avg=832.16, stdev=257.64 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 451], 10.00th=[ 542], 20.00th=[ 625], | 30.00th=[ 684], 40.00th=[ 751], 50.00th=[ 802], 60.00th=[ 860], | 70.00th=[ 927], 80.00th=[ 1020], 90.00th=[ 1150], 95.00th=[ 1267], | 99.00th=[ 1636], 99.50th=[ 1687], 99.90th=[ 1754], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 127, per=24.79%, avg=51.82, stdev=22.72, samples=198 iops : min= 1, max= 31, avg=12.45, stdev= 5.69, samples=198 lat (msec) : 20=0.04%, 50=0.16%, 100=0.12%, 250=3.36%, 500=41.02% lat (msec) : 750=24.10%, 1000=19.96%, 2000=11.25% cpu : usr=0.08%, sys=0.67%, ctx=4990, 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=149724: Wed May 27 05:22:22 2026 read: IOPS=12, BW=50.0KiB/s (52.2kB/s)(5060KiB/99262msec) slat (usec): min=2877, max=52477, avg=12889.38, stdev=7061.96 clat (msec): min=13, max=796, avg=381.71, stdev=108.85 lat (msec): min=20, max=801, avg=394.61, stdev=110.05 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 234], 10.00th=[ 262], 20.00th=[ 296], | 30.00th=[ 321], 40.00th=[ 347], 50.00th=[ 368], 60.00th=[ 393], | 70.00th=[ 426], 80.00th=[ 464], 90.00th=[ 531], 95.00th=[ 575], | 99.00th=[ 726], 99.50th=[ 735], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 152, per=25.38%, avg=50.76, stdev=23.62, samples=196 iops : min= 1, max= 38, avg=12.18, stdev= 5.98, samples=196 write: IOPS=13, BW=52.2KiB/s (53.4kB/s)(5180KiB/99262msec); 0 zone resets slat (usec): min=42, max=16377, avg=354.33, stdev=985.13 clat (msec): min=249, max=1782, avg=838.68, stdev=255.65 lat (msec): min=249, max=1782, avg=839.04, stdev=255.64 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 472], 10.00th=[ 542], 20.00th=[ 634], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 802], 60.00th=[ 869], | 70.00th=[ 944], 80.00th=[ 1036], 90.00th=[ 1150], 95.00th=[ 1284], | 99.00th=[ 1670], 99.50th=[ 1703], 99.90th=[ 1754], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 128, per=24.73%, avg=51.69, stdev=21.31, samples=196 iops : min= 1, max= 32, avg=12.42, stdev= 5.35, samples=196 lat (msec) : 20=0.04%, 50=0.23%, 100=0.12%, 250=3.83%, 500=41.52% lat (msec) : 750=23.52%, 1000=18.79%, 2000=11.95% cpu : usr=0.08%, sys=0.71%, ctx=5011, 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=201KiB/s (206kB/s), 49.8KiB/s-50.0KiB/s (51.0kB/s-52.2kB/s), io=19.6MiB (20.5MB), run=99179-99862msec WRITE: bw=209KiB/s (214kB/s), 52.2KiB/s-52.7KiB/s (53.4kB/s-53.0kB/s), io=20.4MiB (21.4MB), run=99179-99862msec 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=149742: Wed May 27 05:22:30 2026 read: IOPS=3, BW=138MiB/s (145MB/s)(40.0MiB/289msec) slat (nsec): min=15675k, max=15675k, avg=15675239.00, stdev= 0.00 clat (nsec): min=265322k, max=265322k, avg=265322326.00, stdev= 0.00 lat (nsec): min=281002k, max=281002k, avg=281001583.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 266], 5.00th=[ 266], 10.00th=[ 266], 20.00th=[ 266], | 30.00th=[ 266], 40.00th=[ 266], 50.00th=[ 266], 60.00th=[ 266], | 70.00th=[ 266], 80.00th=[ 266], 90.00th=[ 266], 95.00th=[ 266], | 99.00th=[ 266], 99.50th=[ 266], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] lat (msec) : 500=100.00% cpu : usr=0.35%, sys=3.47%, ctx=39, majf=0, minf=7 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=138MiB/s (145MB/s), 138MiB/s-138MiB/s (145MB/s-145MB/s), io=40.0MiB (41.9MB), run=289-289msec 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