== sanity test 398c: run fio to test AIO ================= 15:51:26 (1786823486) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.821899 s, 51.0 MB/s osc.lustre-OST0000-osc-ffff98d4c8927800.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=145850: Sat Aug 15 15:54:34 2026 write: IOPS=14, BW=58.3KiB/s (59.7kB/s)(10.0MiB/175775msec); 0 zone resets slat (usec): min=50, max=31849, avg=326.55, stdev=1083.60 clat (msec): min=188, max=2173, avg=1097.76, stdev=304.03 lat (msec): min=188, max=2174, avg=1098.09, stdev=304.08 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 651], 10.00th=[ 751], 20.00th=[ 860], | 30.00th=[ 944], 40.00th=[ 1011], 50.00th=[ 1099], 60.00th=[ 1167], | 70.00th=[ 1234], 80.00th=[ 1318], 90.00th=[ 1485], 95.00th=[ 1620], | 99.00th=[ 1921], 99.50th=[ 2022], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 8, max= 211, per=25.30%, avg=58.69, stdev=26.31, samples=342 iops : min= 2, max= 52, avg=14.17, stdev= 6.60, samples=342 lat (msec) : 250=1.41%, 500=0.62%, 750=7.85%, 1000=28.40%, 2000=61.05% lat (msec) : >=2000=0.66% cpu : usr=0.05%, sys=0.29%, ctx=1854, 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=145851: Sat Aug 15 15:54:34 2026 write: IOPS=14, BW=58.1KiB/s (59.5kB/s)(10.0MiB/176225msec); 0 zone resets slat (usec): min=46, max=22851, avg=363.77, stdev=1134.05 clat (msec): min=205, max=2123, avg=1100.12, stdev=300.29 lat (msec): min=205, max=2123, avg=1100.49, stdev=300.29 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 651], 10.00th=[ 760], 20.00th=[ 852], | 30.00th=[ 936], 40.00th=[ 1011], 50.00th=[ 1099], 60.00th=[ 1167], | 70.00th=[ 1234], 80.00th=[ 1318], 90.00th=[ 1502], 95.00th=[ 1620], | 99.00th=[ 1854], 99.50th=[ 2072], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 7, max= 128, per=27.23%, avg=63.17, stdev=31.82, samples=318 iops : min= 1, max= 32, avg=15.29, stdev= 8.00, samples=318 lat (msec) : 250=0.62%, 500=0.90%, 750=7.73%, 1000=29.34%, 2000=60.82% lat (msec) : >=2000=0.59% cpu : usr=0.04%, sys=0.28%, ctx=2101, 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=145852: Sat Aug 15 15:54:34 2026 write: IOPS=14, BW=58.2KiB/s (59.5kB/s)(10.0MiB/176092msec); 0 zone resets slat (usec): min=50, max=23104, avg=359.76, stdev=1249.78 clat (msec): min=239, max=2150, avg=1099.31, stdev=297.59 lat (msec): min=239, max=2150, avg=1099.68, stdev=297.64 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 659], 10.00th=[ 751], 20.00th=[ 860], | 30.00th=[ 944], 40.00th=[ 1020], 50.00th=[ 1083], 60.00th=[ 1150], | 70.00th=[ 1217], 80.00th=[ 1334], 90.00th=[ 1485], 95.00th=[ 1603], | 99.00th=[ 1921], 99.50th=[ 2056], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 211, per=25.76%, avg=59.76, stdev=31.01, samples=336 iops : min= 1, max= 52, avg=14.44, stdev= 7.81, samples=336 lat (msec) : 250=0.62%, 500=0.62%, 750=8.71%, 1000=27.77%, 2000=61.64% lat (msec) : >=2000=0.62% cpu : usr=0.05%, sys=0.27%, ctx=1789, 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=145853: Sat Aug 15 15:54:34 2026 write: IOPS=14, BW=58.2KiB/s (59.6kB/s)(10.0MiB/176038msec); 0 zone resets slat (usec): min=48, max=17880, avg=379.89, stdev=1069.20 clat (msec): min=137, max=2151, avg=1098.99, stdev=296.55 lat (msec): min=139, max=2151, avg=1099.37, stdev=296.56 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 659], 10.00th=[ 735], 20.00th=[ 852], | 30.00th=[ 944], 40.00th=[ 1020], 50.00th=[ 1099], 60.00th=[ 1150], | 70.00th=[ 1234], 80.00th=[ 1334], 90.00th=[ 1485], 95.00th=[ 1620], | 99.00th=[ 1888], 99.50th=[ 2022], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 158, per=25.39%, avg=58.89, stdev=24.53, samples=341 iops : min= 1, max= 39, avg=14.23, stdev= 6.18, samples=341 lat (msec) : 250=0.43%, 500=1.33%, 750=8.87%, 1000=27.07%, 2000=61.76% lat (msec) : >=2000=0.55% cpu : usr=0.04%, sys=0.29%, ctx=2166, 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=232KiB/s (238kB/s), 58.1KiB/s-58.3KiB/s (59.5kB/s-59.7kB/s), io=40.0MiB (41.9MB), run=175775-176225msec 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=145890: Sat Aug 15 15:56:49 2026 read: IOPS=9, BW=39.7KiB/s (40.7kB/s)(5048KiB/127062msec) slat (usec): min=3506, max=89944, avg=17133.24, stdev=10136.99 clat (msec): min=19, max=1340, avg=491.79, stdev=155.63 lat (msec): min=25, max=1354, avg=508.95, stdev=157.44 clat percentiles (msec): | 1.00th=[ 218], 5.00th=[ 288], 10.00th=[ 330], 20.00th=[ 368], | 30.00th=[ 401], 40.00th=[ 435], 50.00th=[ 468], 60.00th=[ 506], | 70.00th=[ 550], 80.00th=[ 600], 90.00th=[ 684], 95.00th=[ 751], | 99.00th=[ 1020], 99.50th=[ 1133], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7, max= 112, per=25.13%, avg=39.46, stdev=19.36, samples=249 iops : min= 1, max= 28, avg= 9.30, stdev= 4.86, samples=249 write: IOPS=10, BW=40.9KiB/s (41.8kB/s)(5192KiB/127062msec); 0 zone resets slat (usec): min=57, max=34964, avg=538.99, stdev=1579.46 clat (msec): min=279, max=2337, avg=1067.50, stdev=314.80 lat (msec): min=279, max=2337, avg=1068.05, stdev=314.84 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 609], 10.00th=[ 676], 20.00th=[ 793], | 30.00th=[ 885], 40.00th=[ 961], 50.00th=[ 1036], 60.00th=[ 1099], | 70.00th=[ 1217], 80.00th=[ 1301], 90.00th=[ 1469], 95.00th=[ 1670], | 99.00th=[ 1938], 99.50th=[ 2123], 99.90th=[ 2232], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 111, per=24.78%, avg=40.64, stdev=19.05, samples=249 iops : min= 1, max= 27, avg= 9.59, stdev= 4.78, samples=249 lat (msec) : 20=0.04%, 50=0.04%, 100=0.08%, 250=0.90%, 500=27.97% lat (msec) : 750=25.55%, 1000=16.52%, 2000=28.52%, >=2000=0.39% cpu : usr=0.12%, sys=0.68%, ctx=4794, 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=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=145891: Sat Aug 15 15:56:49 2026 read: IOPS=9, BW=39.4KiB/s (40.3kB/s)(4976KiB/126440msec) slat (usec): min=3372, max=78208, avg=16826.22, stdev=9560.33 clat (msec): min=20, max=1435, avg=477.16, stdev=153.83 lat (msec): min=28, max=1462, avg=494.00, stdev=156.03 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 279], 10.00th=[ 317], 20.00th=[ 355], | 30.00th=[ 393], 40.00th=[ 426], 50.00th=[ 456], 60.00th=[ 493], | 70.00th=[ 542], 80.00th=[ 592], 90.00th=[ 676], 95.00th=[ 735], | 99.00th=[ 953], 99.50th=[ 1028], 99.90th=[ 1401], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7, max= 128, per=24.94%, avg=39.15, stdev=21.38, samples=247 iops : min= 1, max= 32, avg= 9.22, stdev= 5.35, samples=247 write: IOPS=10, BW=41.6KiB/s (42.6kB/s)(5264KiB/126440msec); 0 zone resets slat (usec): min=58, max=20992, avg=476.67, stdev=1263.65 clat (msec): min=181, max=2209, avg=1067.23, stdev=331.39 lat (msec): min=181, max=2209, avg=1067.71, stdev=331.40 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 600], 10.00th=[ 676], 20.00th=[ 776], | 30.00th=[ 860], 40.00th=[ 961], 50.00th=[ 1045], 60.00th=[ 1133], | 70.00th=[ 1217], 80.00th=[ 1318], 90.00th=[ 1502], 95.00th=[ 1687], | 99.00th=[ 1972], 99.50th=[ 2056], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 127, per=25.32%, avg=41.53, stdev=21.30, samples=247 iops : min= 1, max= 31, avg= 9.82, stdev= 5.35, samples=247 lat (msec) : 50=0.16%, 100=0.27%, 250=1.17%, 500=29.53%, 750=24.18% lat (msec) : 1000=15.70%, 2000=28.59%, >=2000=0.39% cpu : usr=0.09%, sys=0.74%, ctx=4602, majf=0, minf=17 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=145892: Sat Aug 15 15:56:49 2026 read: IOPS=9, BW=39.2KiB/s (40.2kB/s)(4984KiB/127062msec) slat (usec): min=3565, max=66175, avg=16764.58, stdev=9215.18 clat (msec): min=19, max=1128, avg=486.02, stdev=142.38 lat (msec): min=28, max=1135, avg=502.79, stdev=144.00 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 305], 10.00th=[ 326], 20.00th=[ 368], | 30.00th=[ 397], 40.00th=[ 435], 50.00th=[ 464], 60.00th=[ 502], | 70.00th=[ 542], 80.00th=[ 600], 90.00th=[ 667], 95.00th=[ 743], | 99.00th=[ 894], 99.50th=[ 1003], 99.90th=[ 1116], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 103, per=24.70%, avg=38.78, stdev=20.08, samples=251 iops : min= 1, max= 25, avg= 9.12, stdev= 5.02, samples=251 write: IOPS=10, BW=41.4KiB/s (42.4kB/s)(5256KiB/127062msec); 0 zone resets slat (usec): min=49, max=14883, avg=481.12, stdev=1076.25 clat (msec): min=149, max=2324, avg=1067.32, stdev=326.63 lat (msec): min=152, max=2324, avg=1067.81, stdev=326.60 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 609], 10.00th=[ 676], 20.00th=[ 785], | 30.00th=[ 869], 40.00th=[ 961], 50.00th=[ 1045], 60.00th=[ 1116], | 70.00th=[ 1200], 80.00th=[ 1301], 90.00th=[ 1502], 95.00th=[ 1670], | 99.00th=[ 2022], 99.50th=[ 2140], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 99, per=24.87%, avg=40.79, stdev=19.36, samples=250 iops : min= 1, max= 24, avg= 9.63, stdev= 4.88, samples=250 lat (msec) : 20=0.04%, 100=0.12%, 250=0.70%, 500=28.67%, 750=25.51% lat (msec) : 1000=15.98%, 2000=28.40%, >=2000=0.59% cpu : usr=0.09%, sys=0.72%, ctx=4680, 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=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=145893: Sat Aug 15 15:56:49 2026 read: IOPS=10, BW=40.2KiB/s (41.1kB/s)(5060KiB/125919msec) slat (usec): min=60, max=79868, avg=16961.22, stdev=9690.31 clat (msec): min=33, max=1061, avg=482.94, stdev=142.77 lat (msec): min=33, max=1071, avg=499.90, stdev=144.80 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 292], 10.00th=[ 326], 20.00th=[ 363], | 30.00th=[ 401], 40.00th=[ 430], 50.00th=[ 464], 60.00th=[ 498], | 70.00th=[ 542], 80.00th=[ 592], 90.00th=[ 667], 95.00th=[ 743], | 99.00th=[ 869], 99.50th=[ 986], 99.90th=[ 1028], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 104, per=25.99%, avg=40.80, stdev=19.73, samples=242 iops : min= 1, max= 26, avg= 9.62, stdev= 4.98, samples=242 write: IOPS=10, BW=41.1KiB/s (42.1kB/s)(5180KiB/125919msec); 0 zone resets slat (usec): min=55, max=18750, avg=506.72, stdev=1318.92 clat (msec): min=154, max=2210, avg=1066.19, stdev=338.05 lat (msec): min=154, max=2210, avg=1066.70, stdev=338.07 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 600], 10.00th=[ 676], 20.00th=[ 776], | 30.00th=[ 869], 40.00th=[ 961], 50.00th=[ 1036], 60.00th=[ 1116], | 70.00th=[ 1217], 80.00th=[ 1318], 90.00th=[ 1536], 95.00th=[ 1720], | 99.00th=[ 1972], 99.50th=[ 2039], 99.90th=[ 2140], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 112, per=24.80%, avg=40.68, stdev=18.76, samples=247 iops : min= 1, max= 28, avg= 9.60, stdev= 4.71, samples=247 lat (msec) : 50=0.16%, 100=0.08%, 250=1.25%, 500=29.38%, 750=24.88% lat (msec) : 1000=16.56%, 2000=27.34%, >=2000=0.35% cpu : usr=0.11%, sys=0.72%, ctx=4725, 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=158KiB/s (162kB/s), 39.2KiB/s-40.2KiB/s (40.2kB/s-41.1kB/s), io=19.6MiB (20.5MB), run=125919-127062msec WRITE: bw=164KiB/s (168kB/s), 40.9KiB/s-41.6KiB/s (41.8kB/s-42.6kB/s), io=20.4MiB (21.4MB), run=125919-127062msec 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=145917: Sat Aug 15 15:56:58 2026 read: IOPS=1, BW=66.1MiB/s (69.3MB/s)(40.0MiB/605msec) slat (nsec): min=29966k, max=29966k, avg=29965790.00, stdev= 0.00 clat (nsec): min=556298k, max=556298k, avg=556297887.00, stdev= 0.00 lat (nsec): min=586268k, max=586268k, avg=586268392.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=2.64%, ctx=5, 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=66.1MiB/s (69.3MB/s), 66.1MiB/s-66.1MiB/s (69.3MB/s-69.3MB/s), io=40.0MiB (41.9MB), run=605-605msec 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