== sanity test 398c: run fio to test AIO ================= 05:48:33 (1786009713) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.4912 s, 85.4 MB/s osc.lustre-OST0000-osc-ffff9c62d176c800.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=143961: Thu Aug 6 05:53:29 2026 write: IOPS=9, BW=36.2KiB/s (37.0kB/s)(10.0MiB/283197msec); 0 zone resets slat (usec): min=49, max=47860, avg=312.90, stdev=1560.04 clat (msec): min=165, max=4341, avg=1769.04, stdev=724.96 lat (msec): min=165, max=4341, avg=1769.36, stdev=725.00 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 667], 10.00th=[ 810], 20.00th=[ 1053], | 30.00th=[ 1318], 40.00th=[ 1536], 50.00th=[ 1770], 60.00th=[ 1989], | 70.00th=[ 2165], 80.00th=[ 2366], 90.00th=[ 2702], 95.00th=[ 3004], | 99.00th=[ 3540], 99.50th=[ 3842], 99.90th=[ 4212], 99.95th=[ 4329], | 99.99th=[ 4329] bw ( KiB/s): min= 7, max= 128, per=27.47%, avg=39.56, stdev=27.36, samples=505 iops : min= 1, max= 32, avg= 9.41, stdev= 6.89, samples=505 lat (msec) : 250=0.12%, 500=0.70%, 750=6.52%, 1000=10.82%, 2000=42.34% lat (msec) : >=2000=39.49% cpu : usr=0.03%, sys=0.17%, ctx=1823, 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=143962: Thu Aug 6 05:53:29 2026 write: IOPS=9, BW=36.0KiB/s (36.9kB/s)(10.0MiB/284070msec); 0 zone resets slat (usec): min=49, max=59315, avg=320.18, stdev=1675.48 clat (msec): min=462, max=3992, avg=1773.77, stdev=712.73 lat (msec): min=462, max=3992, avg=1774.09, stdev=712.80 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 676], 10.00th=[ 818], 20.00th=[ 1099], | 30.00th=[ 1301], 40.00th=[ 1536], 50.00th=[ 1754], 60.00th=[ 1989], | 70.00th=[ 2165], 80.00th=[ 2366], 90.00th=[ 2702], 95.00th=[ 3004], | 99.00th=[ 3507], 99.50th=[ 3574], 99.90th=[ 3876], 99.95th=[ 3977], | 99.99th=[ 3977] bw ( KiB/s): min= 7, max= 143, per=28.57%, avg=41.14, stdev=28.94, samples=486 iops : min= 1, max= 35, avg= 9.81, stdev= 7.28, samples=486 lat (msec) : 500=0.78%, 750=6.05%, 1000=9.41%, 2000=43.95%, >=2000=39.80% cpu : usr=0.03%, sys=0.17%, ctx=1686, 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=143963: Thu Aug 6 05:53:29 2026 write: IOPS=9, BW=36.0KiB/s (36.9kB/s)(10.0MiB/284070msec); 0 zone resets slat (usec): min=48, max=31599, avg=318.21, stdev=1324.64 clat (msec): min=457, max=3821, avg=1773.67, stdev=712.31 lat (msec): min=457, max=3821, avg=1773.99, stdev=712.35 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 684], 10.00th=[ 810], 20.00th=[ 1070], | 30.00th=[ 1318], 40.00th=[ 1536], 50.00th=[ 1770], 60.00th=[ 2005], | 70.00th=[ 2198], 80.00th=[ 2400], 90.00th=[ 2668], 95.00th=[ 2970], | 99.00th=[ 3507], 99.50th=[ 3675], 99.90th=[ 3742], 99.95th=[ 3742], | 99.99th=[ 3809] bw ( KiB/s): min= 7, max= 128, per=30.08%, avg=43.31, stdev=28.25, samples=463 iops : min= 1, max= 32, avg=10.35, stdev= 7.11, samples=463 lat (msec) : 500=0.08%, 750=7.30%, 1000=9.96%, 2000=42.34%, >=2000=40.31% cpu : usr=0.03%, sys=0.16%, ctx=1547, 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=143964: Thu Aug 6 05:53:29 2026 write: IOPS=9, BW=36.0KiB/s (36.9kB/s)(10.0MiB/284070msec); 0 zone resets slat (usec): min=49, max=25664, avg=280.26, stdev=1098.11 clat (msec): min=176, max=4241, avg=1773.60, stdev=716.17 lat (msec): min=176, max=4241, avg=1773.88, stdev=716.22 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 676], 10.00th=[ 810], 20.00th=[ 1062], | 30.00th=[ 1301], 40.00th=[ 1569], 50.00th=[ 1770], 60.00th=[ 2005], | 70.00th=[ 2198], 80.00th=[ 2400], 90.00th=[ 2668], 95.00th=[ 2937], | 99.00th=[ 3574], 99.50th=[ 3708], 99.90th=[ 4044], 99.95th=[ 4245], | 99.99th=[ 4245] bw ( KiB/s): min= 7, max= 143, per=27.94%, avg=40.23, stdev=28.49, samples=498 iops : min= 1, max= 35, avg= 9.59, stdev= 7.15, samples=498 lat (msec) : 250=0.04%, 500=0.27%, 750=7.34%, 1000=9.18%, 2000=43.24% lat (msec) : >=2000=39.92% cpu : usr=0.02%, sys=0.16%, ctx=1857, 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=144KiB/s (148kB/s), 36.0KiB/s-36.2KiB/s (36.9kB/s-37.0kB/s), io=40.0MiB (41.9MB), run=283197-284070msec 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=144015: Thu Aug 6 05:56:46 2026 read: IOPS=6, BW=27.2KiB/s (27.9kB/s)(5048KiB/185436msec) slat (msec): min=2, max=124, avg=19.69, stdev=13.38 clat (msec): min=16, max=2246, avg=722.14, stdev=316.08 lat (msec): min=39, max=2328, avg=741.84, stdev=320.77 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 309], 10.00th=[ 363], 20.00th=[ 435], | 30.00th=[ 550], 40.00th=[ 634], 50.00th=[ 693], 60.00th=[ 760], | 70.00th=[ 818], 80.00th=[ 936], 90.00th=[ 1133], 95.00th=[ 1267], | 99.00th=[ 1754], 99.50th=[ 2022], 99.90th=[ 2232], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 111, per=26.62%, avg=28.75, stdev=17.84, samples=341 iops : min= 1, max= 27, avg= 6.70, stdev= 4.53, samples=341 write: IOPS=6, BW=27.0KiB/s (28.7kB/s)(5192KiB/185436msec); 0 zone resets slat (usec): min=50, max=37922, avg=361.92, stdev=1577.24 clat (msec): min=333, max=4229, avg=1561.11, stdev=658.62 lat (msec): min=333, max=4230, avg=1561.48, stdev=658.62 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 642], 10.00th=[ 768], 20.00th=[ 1036], | 30.00th=[ 1200], 40.00th=[ 1351], 50.00th=[ 1502], 60.00th=[ 1620], | 70.00th=[ 1787], 80.00th=[ 2005], 90.00th=[ 2366], 95.00th=[ 2836], | 99.00th=[ 3742], 99.50th=[ 4044], 99.90th=[ 4212], 99.95th=[ 4245], | 99.99th=[ 4245] bw ( KiB/s): min= 7, max= 128, per=25.80%, avg=28.89, stdev=19.01, samples=348 iops : min= 1, max= 32, avg= 6.73, stdev= 4.82, samples=348 lat (msec) : 20=0.04%, 50=0.04%, 100=0.04%, 250=0.51%, 500=12.81% lat (msec) : 750=19.96%, 1000=17.62%, 2000=38.48%, >=2000=10.51% cpu : usr=0.05%, sys=0.42%, ctx=4259, 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=144016: Thu Aug 6 05:56:46 2026 read: IOPS=6, BW=26.8KiB/s (27.5kB/s)(4976KiB/185438msec) slat (msec): min=2, max=111, avg=19.65, stdev=12.96 clat (msec): min=24, max=2295, avg=710.08, stdev=316.20 lat (msec): min=32, max=2331, avg=729.74, stdev=320.56 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 300], 10.00th=[ 351], 20.00th=[ 443], | 30.00th=[ 542], 40.00th=[ 600], 50.00th=[ 684], 60.00th=[ 743], | 70.00th=[ 810], 80.00th=[ 911], 90.00th=[ 1116], 95.00th=[ 1284], | 99.00th=[ 1770], 99.50th=[ 2022], 99.90th=[ 2198], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 104, per=27.01%, avg=29.17, stdev=17.22, samples=331 iops : min= 1, max= 26, avg= 6.81, stdev= 4.33, samples=331 write: IOPS=7, BW=28.4KiB/s (29.1kB/s)(5264KiB/185438msec); 0 zone resets slat (usec): min=51, max=25719, avg=341.64, stdev=1294.89 clat (msec): min=334, max=4233, avg=1560.75, stdev=658.56 lat (msec): min=334, max=4234, avg=1561.09, stdev=658.66 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 651], 10.00th=[ 785], 20.00th=[ 1011], | 30.00th=[ 1183], 40.00th=[ 1334], 50.00th=[ 1485], 60.00th=[ 1636], | 70.00th=[ 1770], 80.00th=[ 2022], 90.00th=[ 2400], 95.00th=[ 2802], | 99.00th=[ 3608], 99.50th=[ 3910], 99.90th=[ 4212], 99.95th=[ 4245], | 99.99th=[ 4245] bw ( KiB/s): min= 7, max= 136, per=26.39%, avg=29.56, stdev=18.71, samples=345 iops : min= 1, max= 34, avg= 6.89, stdev= 4.76, samples=345 lat (msec) : 50=0.12%, 100=0.16%, 250=0.86%, 500=12.42%, 750=20.86% lat (msec) : 1000=17.70%, 2000=36.84%, >=2000=11.05% cpu : usr=0.07%, sys=0.45%, ctx=4866, 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=144017: Thu Aug 6 05:56:46 2026 read: IOPS=6, BW=26.0KiB/s (27.6kB/s)(4984KiB/184876msec) slat (usec): min=91, max=146699, avg=19712.44, stdev=13675.32 clat (msec): min=11, max=2303, avg=720.32, stdev=319.84 lat (msec): min=11, max=2314, avg=740.04, stdev=324.39 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 305], 10.00th=[ 355], 20.00th=[ 439], | 30.00th=[ 550], 40.00th=[ 625], 50.00th=[ 693], 60.00th=[ 751], | 70.00th=[ 818], 80.00th=[ 944], 90.00th=[ 1116], 95.00th=[ 1318], | 99.00th=[ 1787], 99.50th=[ 2022], 99.90th=[ 2232], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 112, per=26.77%, avg=28.91, stdev=17.46, samples=335 iops : min= 1, max= 28, avg= 6.73, stdev= 4.42, samples=335 write: IOPS=7, BW=28.4KiB/s (29.1kB/s)(5256KiB/184876msec); 0 zone resets slat (usec): min=55, max=20199, avg=301.01, stdev=985.46 clat (msec): min=173, max=4139, avg=1547.68, stdev=651.41 lat (msec): min=173, max=4139, avg=1547.98, stdev=651.44 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 642], 10.00th=[ 760], 20.00th=[ 1011], | 30.00th=[ 1200], 40.00th=[ 1318], 50.00th=[ 1502], 60.00th=[ 1620], | 70.00th=[ 1770], 80.00th=[ 1972], 90.00th=[ 2366], 95.00th=[ 2802], | 99.00th=[ 3540], 99.50th=[ 3977], 99.90th=[ 4044], 99.95th=[ 4144], | 99.99th=[ 4144] bw ( KiB/s): min= 7, max= 96, per=26.52%, avg=29.70, stdev=18.40, samples=342 iops : min= 1, max= 24, avg= 6.93, stdev= 4.69, samples=342 lat (msec) : 20=0.16%, 50=0.12%, 100=0.12%, 250=0.62%, 500=11.99% lat (msec) : 750=20.62%, 1000=17.70%, 2000=38.40%, >=2000=10.27% cpu : usr=0.05%, sys=0.42%, ctx=4604, 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=144018: Thu Aug 6 05:56:46 2026 read: IOPS=6, BW=27.3KiB/s (27.0kB/s)(5060KiB/185260msec) slat (msec): min=2, max=110, avg=20.15, stdev=13.55 clat (msec): min=15, max=2309, avg=725.61, stdev=320.04 lat (msec): min=38, max=2336, avg=745.76, stdev=324.69 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 309], 10.00th=[ 359], 20.00th=[ 447], | 30.00th=[ 550], 40.00th=[ 634], 50.00th=[ 693], 60.00th=[ 760], | 70.00th=[ 827], 80.00th=[ 927], 90.00th=[ 1133], 95.00th=[ 1284], | 99.00th=[ 1888], 99.50th=[ 2056], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 95, per=27.30%, avg=29.48, stdev=17.82, samples=334 iops : min= 1, max= 23, avg= 6.88, stdev= 4.53, samples=334 write: IOPS=6, BW=27.0KiB/s (28.6kB/s)(5180KiB/185260msec); 0 zone resets slat (usec): min=52, max=29210, avg=335.34, stdev=1294.85 clat (msec): min=313, max=4160, avg=1556.72, stdev=662.86 lat (msec): min=313, max=4160, avg=1557.06, stdev=662.90 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 634], 10.00th=[ 751], 20.00th=[ 986], | 30.00th=[ 1183], 40.00th=[ 1334], 50.00th=[ 1485], 60.00th=[ 1620], | 70.00th=[ 1804], 80.00th=[ 2022], 90.00th=[ 2333], 95.00th=[ 2903], | 99.00th=[ 3742], 99.50th=[ 3910], 99.90th=[ 4144], 99.95th=[ 4144], | 99.99th=[ 4144] bw ( KiB/s): min= 7, max= 104, per=26.05%, avg=29.18, stdev=17.92, samples=343 iops : min= 1, max= 26, avg= 6.79, stdev= 4.55, samples=343 lat (msec) : 20=0.04%, 50=0.04%, 100=0.08%, 250=0.59%, 500=12.11% lat (msec) : 750=21.09%, 1000=18.24%, 2000=36.88%, >=2000=10.94% cpu : usr=0.06%, sys=0.46%, ctx=4698, 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=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=108KiB/s (111kB/s), 26.8KiB/s-27.3KiB/s (27.5kB/s-27.0kB/s), io=19.6MiB (20.5MB), run=184876-185438msec WRITE: bw=113KiB/s (115kB/s), 27.0KiB/s-28.4KiB/s (28.6kB/s-29.1kB/s), io=20.4MiB (21.4MB), run=184876-185438msec 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=144049: Thu Aug 6 05:57:01 2026 read: IOPS=1, BW=59.8MiB/s (62.7MB/s)(40.0MiB/669msec) slat (nsec): min=51330k, max=51330k, avg=51330194.00, stdev= 0.00 clat (nsec): min=584234k, max=584234k, avg=584234045.00, stdev= 0.00 lat (nsec): min=635569k, max=635569k, avg=635568767.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] lat (msec) : 750=100.00% cpu : usr=0.15%, sys=1.35%, ctx=19, 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=59.8MiB/s (62.7MB/s), 59.8MiB/s-59.8MiB/s (62.7MB/s-62.7MB/s), io=40.0MiB (41.9MB), run=669-669msec 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