== sanity test 398c: run fio to test AIO ================= 18:32:17 (1785882737) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 1.80497 s, 23.2 MB/s osc.lustre-OST0000-osc-ffff8bf20863a800.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=144469: Tue Aug 4 18:37:36 2026 write: IOPS=8, BW=34.0KiB/s (34.8kB/s)(10.0MiB/301054msec); 0 zone resets slat (usec): min=49, max=23596, avg=289.85, stdev=1073.05 clat (msec): min=209, max=3719, avg=1880.04, stdev=570.16 lat (msec): min=209, max=3719, avg=1880.34, stdev=570.16 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 944], 10.00th=[ 1116], 20.00th=[ 1401], | 30.00th=[ 1620], 40.00th=[ 1787], 50.00th=[ 1905], 60.00th=[ 2056], | 70.00th=[ 2198], 80.00th=[ 2333], 90.00th=[ 2567], 95.00th=[ 2802], | 99.00th=[ 3239], 99.50th=[ 3373], 99.90th=[ 3574], 99.95th=[ 3574], | 99.99th=[ 3708] bw ( KiB/s): min= 7, max= 172, per=27.54%, avg=37.46, stdev=24.34, samples=531 iops : min= 1, max= 43, avg= 8.84, stdev= 6.11, samples=531 lat (msec) : 250=0.62%, 500=0.62%, 750=1.09%, 1000=4.69%, 2000=49.57% lat (msec) : >=2000=43.40% cpu : usr=0.03%, sys=0.15%, ctx=1379, 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=144470: Tue Aug 4 18:37:36 2026 write: IOPS=8, BW=34.1KiB/s (34.9kB/s)(10.0MiB/300600msec); 0 zone resets slat (usec): min=49, max=28084, avg=333.77, stdev=1358.51 clat (msec): min=139, max=3553, avg=1877.85, stdev=576.91 lat (msec): min=140, max=3553, avg=1878.19, stdev=576.84 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 927], 10.00th=[ 1099], 20.00th=[ 1401], | 30.00th=[ 1603], 40.00th=[ 1770], 50.00th=[ 1921], 60.00th=[ 2056], | 70.00th=[ 2198], 80.00th=[ 2333], 90.00th=[ 2534], 95.00th=[ 2802], | 99.00th=[ 3272], 99.50th=[ 3339], 99.90th=[ 3507], 99.95th=[ 3540], | 99.99th=[ 3540] bw ( KiB/s): min= 7, max= 189, per=27.68%, avg=37.64, stdev=25.46, samples=528 iops : min= 1, max= 47, avg= 8.87, stdev= 6.38, samples=528 lat (msec) : 250=0.94%, 500=0.94%, 750=1.17%, 1000=3.98%, 2000=48.79% lat (msec) : >=2000=44.18% cpu : usr=0.03%, sys=0.16%, ctx=1632, 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=144471: Tue Aug 4 18:37:36 2026 write: IOPS=8, BW=34.0KiB/s (34.8kB/s)(10.0MiB/301017msec); 0 zone resets slat (usec): min=49, max=38471, avg=306.92, stdev=1343.58 clat (msec): min=199, max=3768, avg=1879.72, stdev=574.94 lat (msec): min=199, max=3769, avg=1880.03, stdev=575.02 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 936], 10.00th=[ 1116], 20.00th=[ 1418], | 30.00th=[ 1636], 40.00th=[ 1787], 50.00th=[ 1905], 60.00th=[ 2022], | 70.00th=[ 2165], 80.00th=[ 2299], 90.00th=[ 2567], 95.00th=[ 2802], | 99.00th=[ 3406], 99.50th=[ 3507], 99.90th=[ 3675], 99.95th=[ 3675], | 99.99th=[ 3775] bw ( KiB/s): min= 7, max= 173, per=27.53%, avg=37.45, stdev=25.88, samples=531 iops : min= 1, max= 43, avg= 8.83, stdev= 6.50, samples=531 lat (msec) : 250=0.62%, 500=0.62%, 750=0.94%, 1000=4.30%, 2000=51.29% lat (msec) : >=2000=42.23% cpu : usr=0.02%, sys=0.16%, ctx=1624, 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=144472: Tue Aug 4 18:37:36 2026 write: IOPS=8, BW=34.1KiB/s (34.9kB/s)(10.0MiB/300597msec); 0 zone resets slat (usec): min=49, max=44160, avg=353.36, stdev=1620.37 clat (msec): min=177, max=3565, avg=1876.91, stdev=577.00 lat (msec): min=177, max=3567, avg=1877.27, stdev=577.07 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 919], 10.00th=[ 1116], 20.00th=[ 1385], | 30.00th=[ 1603], 40.00th=[ 1770], 50.00th=[ 1905], 60.00th=[ 2039], | 70.00th=[ 2198], 80.00th=[ 2366], 90.00th=[ 2567], 95.00th=[ 2769], | 99.00th=[ 3239], 99.50th=[ 3373], 99.90th=[ 3540], 99.95th=[ 3574], | 99.99th=[ 3574] bw ( KiB/s): min= 7, max= 173, per=27.43%, avg=37.31, stdev=25.07, samples=533 iops : min= 1, max= 43, avg= 8.81, stdev= 6.30, samples=533 lat (msec) : 250=1.25%, 500=0.62%, 750=0.43%, 1000=4.65%, 2000=50.51% lat (msec) : >=2000=42.54% cpu : usr=0.03%, sys=0.17%, ctx=1703, 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=136KiB/s (139kB/s), 34.0KiB/s-34.1KiB/s (34.8kB/s-34.9kB/s), io=40.0MiB (41.9MB), run=300597-301054msec 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=144530: Tue Aug 4 18:41:06 2026 read: IOPS=6, BW=25.9KiB/s (26.5kB/s)(5048KiB/194950msec) slat (msec): min=3, max=123, avg=22.36, stdev=14.25 clat (msec): min=10, max=2076, avg=765.92, stdev=303.00 lat (msec): min=30, max=2123, avg=788.29, stdev=306.76 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 321], 10.00th=[ 376], 20.00th=[ 506], | 30.00th=[ 600], 40.00th=[ 676], 50.00th=[ 751], 60.00th=[ 835], | 70.00th=[ 919], 80.00th=[ 986], 90.00th=[ 1150], 95.00th=[ 1301], | 99.00th=[ 1603], 99.50th=[ 1770], 99.90th=[ 2072], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 7, max= 96, per=27.16%, avg=27.70, stdev=16.94, samples=353 iops : min= 1, max= 24, avg= 6.38, stdev= 4.30, samples=353 write: IOPS=6, BW=26.6KiB/s (27.3kB/s)(5192KiB/194950msec); 0 zone resets slat (usec): min=54, max=31318, avg=503.27, stdev=2126.58 clat (msec): min=370, max=3664, avg=1630.87, stdev=624.14 lat (msec): min=370, max=3664, avg=1631.37, stdev=624.18 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 735], 10.00th=[ 885], 20.00th=[ 1116], | 30.00th=[ 1267], 40.00th=[ 1418], 50.00th=[ 1552], 60.00th=[ 1687], | 70.00th=[ 1854], 80.00th=[ 2140], 90.00th=[ 2467], 95.00th=[ 2869], | 99.00th=[ 3306], 99.50th=[ 3473], 99.90th=[ 3641], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 7, max= 95, per=26.27%, avg=27.84, stdev=18.18, samples=360 iops : min= 1, max= 23, avg= 6.41, stdev= 4.58, samples=360 lat (msec) : 20=0.04%, 50=0.12%, 100=0.12%, 250=0.70%, 500=9.18% lat (msec) : 750=16.91%, 1000=20.31%, 2000=40.00%, >=2000=12.62% cpu : usr=0.07%, sys=0.44%, ctx=3912, 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=144531: Tue Aug 4 18:41:06 2026 read: IOPS=6, BW=25.4KiB/s (25.0kB/s)(4976KiB/196279msec) slat (msec): min=3, max=131, avg=22.51, stdev=14.97 clat (msec): min=17, max=2091, avg=770.30, stdev=292.69 lat (msec): min=25, max=2143, avg=792.82, stdev=297.33 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 330], 10.00th=[ 380], 20.00th=[ 506], | 30.00th=[ 609], 40.00th=[ 693], 50.00th=[ 760], 60.00th=[ 852], | 70.00th=[ 927], 80.00th=[ 1011], 90.00th=[ 1116], 95.00th=[ 1234], | 99.00th=[ 1485], 99.50th=[ 1569], 99.90th=[ 2022], 99.95th=[ 2089], | 99.99th=[ 2089] bw ( KiB/s): min= 7, max= 96, per=26.66%, avg=27.20, stdev=17.31, samples=353 iops : min= 1, max= 24, avg= 6.25, stdev= 4.34, samples=353 write: IOPS=6, BW=26.8KiB/s (27.5kB/s)(5264KiB/196279msec); 0 zone resets slat (usec): min=51, max=26923, avg=447.29, stdev=1631.87 clat (msec): min=301, max=3666, avg=1632.86, stdev=612.53 lat (msec): min=302, max=3666, avg=1633.31, stdev=612.63 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 735], 10.00th=[ 911], 20.00th=[ 1150], | 30.00th=[ 1284], 40.00th=[ 1418], 50.00th=[ 1569], 60.00th=[ 1687], | 70.00th=[ 1854], 80.00th=[ 2123], 90.00th=[ 2500], 95.00th=[ 2836], | 99.00th=[ 3339], 99.50th=[ 3440], 99.90th=[ 3641], 99.95th=[ 3675], | 99.99th=[ 3675] bw ( KiB/s): min= 7, max= 93, per=26.22%, avg=27.79, stdev=17.49, samples=367 iops : min= 1, max= 23, avg= 6.41, stdev= 4.43, samples=367 lat (msec) : 20=0.04%, 50=0.08%, 100=0.08%, 250=0.55%, 500=9.49% lat (msec) : 750=16.17%, 1000=19.10%, 2000=42.19%, >=2000=12.30% cpu : usr=0.06%, sys=0.44%, ctx=4076, 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=144532: Tue Aug 4 18:41:06 2026 read: IOPS=6, BW=25.4KiB/s (26.0kB/s)(4984KiB/196281msec) slat (msec): min=3, max=137, avg=22.19, stdev=14.36 clat (msec): min=16, max=1936, avg=760.31, stdev=273.93 lat (msec): min=51, max=1953, avg=782.52, stdev=277.91 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 342], 10.00th=[ 388], 20.00th=[ 510], | 30.00th=[ 609], 40.00th=[ 693], 50.00th=[ 760], 60.00th=[ 827], | 70.00th=[ 911], 80.00th=[ 986], 90.00th=[ 1099], 95.00th=[ 1200], | 99.00th=[ 1452], 99.50th=[ 1569], 99.90th=[ 1804], 99.95th=[ 1938], | 99.99th=[ 1938] bw ( KiB/s): min= 7, max= 111, per=26.54%, avg=27.08, stdev=17.47, samples=357 iops : min= 1, max= 27, avg= 6.23, stdev= 4.40, samples=357 write: IOPS=6, BW=26.8KiB/s (27.4kB/s)(5256KiB/196281msec); 0 zone resets slat (usec): min=49, max=51503, avg=429.65, stdev=1893.59 clat (msec): min=299, max=3719, avg=1643.37, stdev=617.60 lat (msec): min=299, max=3719, avg=1643.81, stdev=617.59 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 776], 10.00th=[ 911], 20.00th=[ 1116], | 30.00th=[ 1267], 40.00th=[ 1418], 50.00th=[ 1569], 60.00th=[ 1703], | 70.00th=[ 1888], 80.00th=[ 2165], 90.00th=[ 2534], 95.00th=[ 2869], | 99.00th=[ 3205], 99.50th=[ 3440], 99.90th=[ 3574], 99.95th=[ 3708], | 99.99th=[ 3708] bw ( KiB/s): min= 7, max= 95, per=25.90%, avg=27.46, stdev=17.49, samples=369 iops : min= 1, max= 23, avg= 6.31, stdev= 4.44, samples=369 lat (msec) : 20=0.04%, 100=0.08%, 250=0.39%, 500=9.53%, 750=16.05% lat (msec) : 1000=20.82%, 2000=39.96%, >=2000=13.12% cpu : usr=0.08%, sys=0.41%, ctx=3757, 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=144533: Tue Aug 4 18:41:06 2026 read: IOPS=6, BW=25.0KiB/s (26.6kB/s)(5060KiB/194773msec) slat (usec): min=80, max=117059, avg=22090.45, stdev=15059.06 clat (msec): min=29, max=3139, avg=760.24, stdev=312.38 lat (msec): min=31, max=3185, avg=782.34, stdev=316.57 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 334], 10.00th=[ 384], 20.00th=[ 502], | 30.00th=[ 592], 40.00th=[ 667], 50.00th=[ 735], 60.00th=[ 827], | 70.00th=[ 902], 80.00th=[ 995], 90.00th=[ 1133], 95.00th=[ 1250], | 99.00th=[ 1502], 99.50th=[ 1804], 99.90th=[ 3104], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min= 7, max= 103, per=27.73%, avg=28.29, stdev=16.94, samples=347 iops : min= 1, max= 25, avg= 6.53, stdev= 4.28, samples=347 write: IOPS=6, BW=26.6KiB/s (27.2kB/s)(5180KiB/194773msec); 0 zone resets slat (usec): min=53, max=38837, avg=535.93, stdev=2211.99 clat (msec): min=287, max=4588, avg=1638.78, stdev=653.42 lat (msec): min=287, max=4588, avg=1639.32, stdev=653.48 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 726], 10.00th=[ 869], 20.00th=[ 1099], | 30.00th=[ 1284], 40.00th=[ 1418], 50.00th=[ 1552], 60.00th=[ 1720], | 70.00th=[ 1871], 80.00th=[ 2106], 90.00th=[ 2534], 95.00th=[ 2903], | 99.00th=[ 3373], 99.50th=[ 4463], 99.90th=[ 4463], 99.95th=[ 4597], | 99.99th=[ 4597] bw ( KiB/s): min= 7, max= 88, per=26.80%, avg=28.41, stdev=17.27, samples=352 iops : min= 1, max= 22, avg= 6.56, stdev= 4.37, samples=352 lat (msec) : 50=0.16%, 100=0.16%, 250=0.66%, 500=9.57%, 750=17.97% lat (msec) : 1000=19.14%, 2000=40.23%, >=2000=12.11% cpu : usr=0.06%, sys=0.45%, ctx=4298, 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=102KiB/s (105kB/s), 25.4KiB/s-25.0KiB/s (25.0kB/s-26.6kB/s), io=19.6MiB (20.5MB), run=194773-196281msec WRITE: bw=106KiB/s (109kB/s), 26.6KiB/s-26.8KiB/s (27.2kB/s-27.5kB/s), io=20.4MiB (21.4MB), run=194773-196281msec 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=144565: Tue Aug 4 18:41:22 2026 read: IOPS=1, BW=52.8MiB/s (55.4MB/s)(40.0MiB/757msec) slat (nsec): min=45581k, max=45581k, avg=45580913.00, stdev= 0.00 clat (nsec): min=684617k, max=684617k, avg=684616523.00, stdev= 0.00 lat (nsec): min=730202k, max=730202k, avg=730201710.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 684], 5.00th=[ 684], 10.00th=[ 684], 20.00th=[ 684], | 30.00th=[ 684], 40.00th=[ 684], 50.00th=[ 684], 60.00th=[ 684], | 70.00th=[ 684], 80.00th=[ 684], 90.00th=[ 684], 95.00th=[ 684], | 99.00th=[ 684], 99.50th=[ 684], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.72%, ctx=20, 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=52.8MiB/s (55.4MB/s), 52.8MiB/s-52.8MiB/s (55.4MB/s-55.4MB/s), io=40.0MiB (41.9MB), run=757-757msec 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