== sanity test 398c: run fio to test AIO ================= 05:49:03 (1787392143) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.494015 s, 84.9 MB/s osc.lustre-OST0000-osc-ffff94ad0092e800.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=145729: Sat Aug 22 05:51:42 2026 write: IOPS=17, BW=69.2KiB/s (70.9kB/s)(10.0MiB/147933msec); 0 zone resets slat (usec): min=48, max=12394, avg=270.19, stdev=727.85 clat (msec): min=208, max=1693, avg=923.56, stdev=244.11 lat (msec): min=208, max=1693, avg=923.83, stdev=244.14 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 558], 10.00th=[ 659], 20.00th=[ 743], | 30.00th=[ 810], 40.00th=[ 860], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1036], 80.00th=[ 1083], 90.00th=[ 1234], 95.00th=[ 1334], | 99.00th=[ 1603], 99.50th=[ 1636], 99.90th=[ 1687], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 7, max= 254, per=25.06%, avg=69.16, stdev=34.07, samples=291 iops : min= 1, max= 63, avg=16.79, stdev= 8.54, samples=291 lat (msec) : 250=1.25%, 500=1.99%, 750=17.23%, 1000=44.14%, 2000=35.39% cpu : usr=0.05%, sys=0.28%, ctx=1756, 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=145730: Sat Aug 22 05:51:42 2026 write: IOPS=17, BW=69.4KiB/s (71.0kB/s)(10.0MiB/147583msec); 0 zone resets slat (usec): min=50, max=10997, avg=272.44, stdev=700.35 clat (msec): min=163, max=1719, avg=921.13, stdev=245.52 lat (msec): min=164, max=1719, avg=921.40, stdev=245.53 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 567], 10.00th=[ 659], 20.00th=[ 743], | 30.00th=[ 802], 40.00th=[ 852], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1028], 80.00th=[ 1099], 90.00th=[ 1217], 95.00th=[ 1368], | 99.00th=[ 1552], 99.50th=[ 1603], 99.90th=[ 1670], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 8, max= 254, per=25.15%, avg=69.42, stdev=33.22, samples=290 iops : min= 2, max= 63, avg=16.85, stdev= 8.30, samples=290 lat (msec) : 250=1.25%, 500=1.99%, 750=17.46%, 1000=44.77%, 2000=34.53% cpu : usr=0.04%, sys=0.27%, ctx=1904, 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=145731: Sat Aug 22 05:51:42 2026 write: IOPS=17, BW=69.4KiB/s (71.0kB/s)(10.0MiB/147584msec); 0 zone resets slat (usec): min=50, max=9571, avg=265.31, stdev=630.61 clat (msec): min=133, max=1695, avg=921.74, stdev=246.40 lat (msec): min=133, max=1695, avg=922.01, stdev=246.36 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 558], 10.00th=[ 651], 20.00th=[ 735], | 30.00th=[ 810], 40.00th=[ 860], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1036], 80.00th=[ 1099], 90.00th=[ 1217], 95.00th=[ 1334], | 99.00th=[ 1569], 99.50th=[ 1603], 99.90th=[ 1687], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 15, max= 239, per=24.98%, avg=68.93, stdev=27.39, samples=292 iops : min= 3, max= 59, avg=16.73, stdev= 6.84, samples=292 lat (msec) : 250=1.13%, 500=2.62%, 750=17.30%, 1000=43.44%, 2000=35.51% cpu : usr=0.04%, sys=0.28%, ctx=2121, 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=145732: Sat Aug 22 05:51:42 2026 write: IOPS=17, BW=69.2KiB/s (70.9kB/s)(10.0MiB/147931msec); 0 zone resets slat (usec): min=48, max=26382, avg=284.48, stdev=1044.08 clat (msec): min=178, max=1733, avg=923.45, stdev=239.99 lat (msec): min=179, max=1734, avg=923.74, stdev=239.98 clat percentiles (msec): | 1.00th=[ 262], 5.00th=[ 535], 10.00th=[ 659], 20.00th=[ 735], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1234], 95.00th=[ 1318], | 99.00th=[ 1552], 99.50th=[ 1603], 99.90th=[ 1687], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 7, max= 206, per=25.33%, avg=69.92, stdev=34.56, samples=288 iops : min= 1, max= 51, avg=16.98, stdev= 8.64, samples=288 lat (msec) : 250=0.86%, 500=3.05%, 750=18.01%, 1000=42.46%, 2000=35.62% cpu : usr=0.04%, sys=0.29%, ctx=1939, 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=277KiB/s (284kB/s), 69.2KiB/s-69.4KiB/s (70.9kB/s-71.0kB/s), io=40.0MiB (41.9MB), run=147583-147933msec 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=145764: Sat Aug 22 05:53:35 2026 read: IOPS=12, BW=48.1KiB/s (49.3kB/s)(5048KiB/104870msec) slat (usec): min=2970, max=57720, avg=13650.35, stdev=6873.56 clat (msec): min=15, max=680, avg=401.93, stdev=95.38 lat (msec): min=27, max=703, avg=415.59, stdev=96.65 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 264], 10.00th=[ 292], 20.00th=[ 326], | 30.00th=[ 351], 40.00th=[ 376], 50.00th=[ 401], 60.00th=[ 426], | 70.00th=[ 447], 80.00th=[ 481], 90.00th=[ 527], 95.00th=[ 567], | 99.00th=[ 634], 99.50th=[ 651], 99.90th=[ 676], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 119, per=24.98%, avg=47.71, stdev=22.54, samples=207 iops : min= 1, max= 29, avg=11.41, stdev= 5.68, samples=207 write: IOPS=12, BW=49.5KiB/s (50.7kB/s)(5192KiB/104870msec); 0 zone resets slat (usec): min=50, max=21000, avg=417.44, stdev=1074.83 clat (msec): min=268, max=1455, avg=885.56, stdev=200.71 lat (msec): min=269, max=1455, avg=885.98, stdev=200.76 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 567], 10.00th=[ 625], 20.00th=[ 709], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 885], 60.00th=[ 936], | 70.00th=[ 986], 80.00th=[ 1053], 90.00th=[ 1150], 95.00th=[ 1217], | 99.00th=[ 1368], 99.50th=[ 1435], 99.90th=[ 1452], 99.95th=[ 1452], | 99.99th=[ 1452] bw ( KiB/s): min= 8, max= 119, per=24.56%, avg=48.86, stdev=18.45, samples=207 iops : min= 2, max= 29, avg=11.70, stdev= 4.66, samples=207 lat (msec) : 20=0.04%, 50=0.23%, 100=0.12%, 250=1.33%, 500=41.25% lat (msec) : 750=19.92%, 1000=22.70%, 2000=14.41% cpu : usr=0.11%, sys=0.72%, ctx=4169, 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=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=145765: Sat Aug 22 05:53:35 2026 read: IOPS=11, BW=47.5KiB/s (48.6kB/s)(4976KiB/104739msec) slat (usec): min=2734, max=56725, avg=13702.29, stdev=7050.48 clat (msec): min=8, max=751, avg=399.57, stdev=91.60 lat (msec): min=34, max=763, avg=413.28, stdev=92.60 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 275], 10.00th=[ 296], 20.00th=[ 330], | 30.00th=[ 351], 40.00th=[ 372], 50.00th=[ 393], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 477], 90.00th=[ 518], 95.00th=[ 558], | 99.00th=[ 625], 99.50th=[ 651], 99.90th=[ 684], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 120, per=24.57%, avg=46.93, stdev=21.13, samples=208 iops : min= 1, max= 30, avg=11.21, stdev= 5.34, samples=208 write: IOPS=12, BW=50.3KiB/s (51.5kB/s)(5264KiB/104739msec); 0 zone resets slat (usec): min=54, max=11953, avg=362.94, stdev=791.27 clat (msec): min=277, max=1417, avg=880.37, stdev=202.63 lat (msec): min=277, max=1417, avg=880.74, stdev=202.63 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 558], 10.00th=[ 625], 20.00th=[ 709], | 30.00th=[ 760], 40.00th=[ 818], 50.00th=[ 877], 60.00th=[ 936], | 70.00th=[ 995], 80.00th=[ 1053], 90.00th=[ 1167], 95.00th=[ 1217], | 99.00th=[ 1318], 99.50th=[ 1368], 99.90th=[ 1418], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7, max= 111, per=24.86%, avg=49.48, stdev=19.98, samples=208 iops : min= 1, max= 27, avg=11.85, stdev= 5.04, samples=208 lat (msec) : 10=0.04%, 50=0.16%, 100=0.08%, 250=1.21%, 500=41.41% lat (msec) : 750=19.96%, 1000=22.62%, 2000=14.53% cpu : usr=0.09%, sys=0.73%, ctx=4510, 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=145766: Sat Aug 22 05:53:35 2026 read: IOPS=11, BW=47.5KiB/s (48.7kB/s)(4984KiB/104871msec) slat (usec): min=3093, max=56348, avg=13808.04, stdev=6834.97 clat (msec): min=16, max=688, avg=400.08, stdev=95.59 lat (msec): min=22, max=702, avg=413.89, stdev=96.48 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 266], 10.00th=[ 296], 20.00th=[ 326], | 30.00th=[ 351], 40.00th=[ 372], 50.00th=[ 397], 60.00th=[ 418], | 70.00th=[ 443], 80.00th=[ 477], 90.00th=[ 523], 95.00th=[ 567], | 99.00th=[ 634], 99.50th=[ 651], 99.90th=[ 667], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 120, per=24.60%, avg=47.00, stdev=20.68, samples=208 iops : min= 1, max= 30, avg=11.23, stdev= 5.25, samples=208 write: IOPS=12, BW=50.1KiB/s (51.3kB/s)(5256KiB/104871msec); 0 zone resets slat (usec): min=54, max=8635, avg=336.83, stdev=669.83 clat (msec): min=155, max=1523, avg=882.02, stdev=206.02 lat (msec): min=156, max=1523, avg=882.36, stdev=206.00 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 567], 10.00th=[ 634], 20.00th=[ 709], | 30.00th=[ 768], 40.00th=[ 818], 50.00th=[ 877], 60.00th=[ 936], | 70.00th=[ 986], 80.00th=[ 1062], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1351], 99.50th=[ 1452], 99.90th=[ 1519], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 7, max= 96, per=24.62%, avg=49.00, stdev=19.80, samples=208 iops : min= 1, max= 24, avg=11.73, stdev= 4.97, samples=208 lat (msec) : 20=0.08%, 50=0.27%, 100=0.16%, 250=1.21%, 500=41.25% lat (msec) : 750=19.61%, 1000=22.97%, 2000=14.45% cpu : usr=0.11%, sys=0.68%, ctx=4380, 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=145767: Sat Aug 22 05:53:35 2026 read: IOPS=12, BW=48.4KiB/s (49.5kB/s)(5060KiB/104573msec) slat (usec): min=57, max=51234, avg=13924.69, stdev=7372.95 clat (msec): min=17, max=720, avg=402.63, stdev=88.77 lat (msec): min=27, max=732, avg=416.56, stdev=89.84 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 279], 10.00th=[ 300], 20.00th=[ 334], | 30.00th=[ 355], 40.00th=[ 376], 50.00th=[ 397], 60.00th=[ 418], | 70.00th=[ 447], 80.00th=[ 477], 90.00th=[ 518], 95.00th=[ 558], | 99.00th=[ 625], 99.50th=[ 651], 99.90th=[ 701], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 104, per=25.38%, avg=48.47, stdev=20.51, samples=205 iops : min= 1, max= 26, avg=11.60, stdev= 5.18, samples=205 write: IOPS=12, BW=49.5KiB/s (50.7kB/s)(5180KiB/104573msec); 0 zone resets slat (usec): min=57, max=19128, avg=442.57, stdev=1151.03 clat (msec): min=156, max=1552, avg=883.86, stdev=199.44 lat (msec): min=158, max=1552, avg=884.31, stdev=199.48 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 584], 10.00th=[ 651], 20.00th=[ 718], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 877], 60.00th=[ 927], | 70.00th=[ 986], 80.00th=[ 1062], 90.00th=[ 1150], 95.00th=[ 1217], | 99.00th=[ 1334], 99.50th=[ 1401], 99.90th=[ 1502], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8, max= 103, per=24.43%, avg=48.62, stdev=18.05, samples=208 iops : min= 2, max= 25, avg=11.64, stdev= 4.54, samples=208 lat (msec) : 20=0.04%, 50=0.08%, 100=0.12%, 250=1.13%, 500=42.27% lat (msec) : 750=19.41%, 1000=22.77%, 2000=14.18% cpu : usr=0.11%, sys=0.75%, ctx=4614, 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=191KiB/s (196kB/s), 47.5KiB/s-48.4KiB/s (48.6kB/s-49.5kB/s), io=19.6MiB (20.5MB), run=104573-104871msec WRITE: bw=199KiB/s (204kB/s), 49.5KiB/s-50.3KiB/s (50.7kB/s-51.5kB/s), io=20.4MiB (21.4MB), run=104573-104871msec 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=145786: Sat Aug 22 05:53:46 2026 read: IOPS=1, BW=72.5MiB/s (75.0MB/s)(40.0MiB/552msec) slat (nsec): min=49345k, max=49345k, avg=49344623.00, stdev= 0.00 clat (nsec): min=477186k, max=477186k, avg=477185668.00, stdev= 0.00 lat (nsec): min=526536k, max=526536k, avg=526536175.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 477], 10.00th=[ 477], 20.00th=[ 477], | 30.00th=[ 477], 40.00th=[ 477], 50.00th=[ 477], 60.00th=[ 477], | 70.00th=[ 477], 80.00th=[ 477], 90.00th=[ 477], 95.00th=[ 477], | 99.00th=[ 477], 99.50th=[ 477], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.00%, ctx=36, 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=72.5MiB/s (75.0MB/s), 72.5MiB/s-72.5MiB/s (75.0MB/s-75.0MB/s), io=40.0MiB (41.9MB), run=552-552msec 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