== sanity test 398c: run fio to test AIO ================= 07:22:13 (1788780133) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.432735 s, 96.9 MB/s osc.lustre-OST0000-osc-ffff9858908a1000.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=146135: Mon Sep 7 07:24:48 2026 write: IOPS=17, BW=68.9KiB/s (70.6kB/s)(10.0MiB/148517msec); 0 zone resets slat (usec): min=28, max=16576, avg=240.81, stdev=853.52 clat (msec): min=236, max=2193, avg=927.35, stdev=254.99 lat (msec): min=236, max=2193, avg=927.59, stdev=254.99 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 558], 10.00th=[ 659], 20.00th=[ 751], | 30.00th=[ 810], 40.00th=[ 860], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1028], 80.00th=[ 1116], 90.00th=[ 1217], 95.00th=[ 1351], | 99.00th=[ 1653], 99.50th=[ 1854], 99.90th=[ 2165], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 255, per=24.80%, avg=68.20, stdev=28.24, samples=295 iops : min= 1, max= 63, avg=16.58, stdev= 7.09, samples=295 lat (msec) : 250=0.04%, 500=4.02%, 750=16.05%, 1000=45.82%, 2000=33.71% lat (msec) : >=2000=0.35% cpu : usr=0.05%, sys=0.24%, ctx=1761, 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=146136: Mon Sep 7 07:24:48 2026 write: IOPS=17, BW=68.9KiB/s (70.6kB/s)(10.0MiB/148605msec); 0 zone resets slat (usec): min=22, max=14294, avg=199.15, stdev=685.24 clat (msec): min=227, max=2103, avg=928.03, stdev=256.35 lat (msec): min=228, max=2103, avg=928.23, stdev=256.38 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 535], 10.00th=[ 651], 20.00th=[ 751], | 30.00th=[ 818], 40.00th=[ 869], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1028], 80.00th=[ 1116], 90.00th=[ 1234], 95.00th=[ 1334], | 99.00th=[ 1653], 99.50th=[ 1804], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2106] bw ( KiB/s): min= 7, max= 255, per=24.86%, avg=68.36, stdev=33.64, samples=295 iops : min= 1, max= 63, avg=16.62, stdev= 8.43, samples=295 lat (msec) : 250=0.08%, 500=4.22%, 750=15.51%, 1000=46.05%, 2000=33.83% lat (msec) : >=2000=0.31% cpu : usr=0.04%, sys=0.22%, ctx=1660, 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=146137: Mon Sep 7 07:24:48 2026 write: IOPS=17, BW=68.9KiB/s (70.6kB/s)(10.0MiB/148607msec); 0 zone resets slat (usec): min=27, max=28844, avg=244.61, stdev=1038.94 clat (msec): min=89, max=2188, avg=928.11, stdev=256.11 lat (msec): min=89, max=2188, avg=928.35, stdev=256.16 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 542], 10.00th=[ 667], 20.00th=[ 751], | 30.00th=[ 818], 40.00th=[ 860], 50.00th=[ 911], 60.00th=[ 961], | 70.00th=[ 1020], 80.00th=[ 1116], 90.00th=[ 1234], 95.00th=[ 1351], | 99.00th=[ 1636], 99.50th=[ 1905], 99.90th=[ 2165], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 255, per=24.86%, avg=68.37, stdev=28.10, samples=295 iops : min= 1, max= 63, avg=16.62, stdev= 7.07, samples=295 lat (msec) : 100=0.12%, 250=0.16%, 500=3.87%, 750=15.43%, 1000=47.19% lat (msec) : 2000=32.77%, >=2000=0.47% cpu : usr=0.04%, sys=0.22%, ctx=1689, 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=146138: Mon Sep 7 07:24:48 2026 write: IOPS=17, BW=69.0KiB/s (70.7kB/s)(10.0MiB/148317msec); 0 zone resets slat (usec): min=28, max=20719, avg=224.03, stdev=799.69 clat (msec): min=59, max=2175, avg=926.40, stdev=267.58 lat (msec): min=60, max=2175, avg=926.63, stdev=267.56 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 510], 10.00th=[ 651], 20.00th=[ 751], | 30.00th=[ 818], 40.00th=[ 860], 50.00th=[ 902], 60.00th=[ 961], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1234], 95.00th=[ 1368], | 99.00th=[ 1586], 99.50th=[ 2039], 99.90th=[ 2140], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 305, per=25.19%, avg=69.26, stdev=34.82, samples=291 iops : min= 1, max= 76, avg=16.85, stdev= 8.74, samples=291 lat (msec) : 100=0.35%, 250=1.09%, 500=3.48%, 750=15.47%, 1000=45.31% lat (msec) : 2000=33.75%, >=2000=0.55% cpu : usr=0.05%, sys=0.22%, ctx=1738, 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=276KiB/s (282kB/s), 68.9KiB/s-69.0KiB/s (70.6kB/s-70.7kB/s), io=40.0MiB (41.9MB), run=148317-148607msec 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=146170: Mon Sep 7 07:26:38 2026 read: IOPS=12, BW=49.0KiB/s (50.2kB/s)(5048KiB/102992msec) slat (usec): min=2916, max=58586, avg=13405.42, stdev=7143.22 clat (msec): min=14, max=797, avg=400.97, stdev=92.32 lat (msec): min=23, max=821, avg=414.38, stdev=93.16 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 264], 10.00th=[ 296], 20.00th=[ 330], | 30.00th=[ 351], 40.00th=[ 376], 50.00th=[ 397], 60.00th=[ 422], | 70.00th=[ 443], 80.00th=[ 472], 90.00th=[ 518], 95.00th=[ 558], | 99.00th=[ 642], 99.50th=[ 667], 99.90th=[ 726], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 111, per=24.94%, avg=48.38, stdev=20.85, samples=204 iops : min= 1, max= 27, avg=11.58, stdev= 5.26, samples=204 write: IOPS=12, BW=50.4KiB/s (51.6kB/s)(5192KiB/102992msec); 0 zone resets slat (usec): min=33, max=9278, avg=265.27, stdev=706.92 clat (msec): min=284, max=1635, avg=863.81, stdev=218.84 lat (msec): min=284, max=1635, avg=864.08, stdev=218.85 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 523], 10.00th=[ 592], 20.00th=[ 684], | 30.00th=[ 751], 40.00th=[ 802], 50.00th=[ 852], 60.00th=[ 894], | 70.00th=[ 961], 80.00th=[ 1028], 90.00th=[ 1150], 95.00th=[ 1250], | 99.00th=[ 1502], 99.50th=[ 1519], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 15, max= 104, per=24.75%, avg=50.00, stdev=18.78, samples=203 iops : min= 3, max= 26, avg=11.99, stdev= 4.72, samples=203 lat (msec) : 20=0.08%, 50=0.08%, 100=0.12%, 250=1.37%, 500=42.70% lat (msec) : 750=20.04%, 1000=23.95%, 2000=11.68% cpu : usr=0.11%, sys=0.57%, ctx=4460, 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=146171: Mon Sep 7 07:26:38 2026 read: IOPS=12, BW=48.3KiB/s (49.5kB/s)(4976KiB/102933msec) slat (usec): min=2979, max=58669, avg=13376.79, stdev=7021.18 clat (msec): min=10, max=683, avg=401.46, stdev=93.17 lat (msec): min=16, max=703, avg=414.85, stdev=93.83 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 266], 10.00th=[ 292], 20.00th=[ 330], | 30.00th=[ 351], 40.00th=[ 372], 50.00th=[ 393], 60.00th=[ 418], | 70.00th=[ 443], 80.00th=[ 477], 90.00th=[ 527], 95.00th=[ 567], | 99.00th=[ 625], 99.50th=[ 651], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 111, per=24.61%, avg=47.75, stdev=20.73, samples=204 iops : min= 1, max= 27, avg=11.42, stdev= 5.24, samples=204 write: IOPS=12, BW=51.1KiB/s (52.4kB/s)(5264KiB/102933msec); 0 zone resets slat (usec): min=32, max=18901, avg=297.84, stdev=1069.03 clat (msec): min=198, max=1609, avg=857.57, stdev=222.43 lat (msec): min=198, max=1609, avg=857.88, stdev=222.48 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 498], 10.00th=[ 584], 20.00th=[ 684], | 30.00th=[ 751], 40.00th=[ 802], 50.00th=[ 852], 60.00th=[ 902], | 70.00th=[ 953], 80.00th=[ 1028], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1435], 99.50th=[ 1485], 99.90th=[ 1569], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 7, max= 104, per=25.00%, avg=50.50, stdev=20.11, samples=204 iops : min= 1, max= 26, avg=12.12, stdev= 5.06, samples=204 lat (msec) : 20=0.08%, 100=0.27%, 250=1.68%, 500=42.38%, 750=19.53% lat (msec) : 1000=23.75%, 2000=12.30% cpu : usr=0.08%, sys=0.60%, ctx=4183, 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=146172: Mon Sep 7 07:26:38 2026 read: IOPS=12, BW=48.5KiB/s (49.6kB/s)(4984KiB/102806msec) slat (usec): min=33, max=49633, avg=13277.27, stdev=6718.70 clat (msec): min=14, max=899, avg=400.70, stdev=97.73 lat (msec): min=22, max=914, avg=413.99, stdev=98.62 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 262], 10.00th=[ 292], 20.00th=[ 326], | 30.00th=[ 351], 40.00th=[ 372], 50.00th=[ 397], 60.00th=[ 422], | 70.00th=[ 447], 80.00th=[ 477], 90.00th=[ 518], 95.00th=[ 558], | 99.00th=[ 634], 99.50th=[ 659], 99.90th=[ 802], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 7, max= 111, per=24.72%, avg=47.97, stdev=21.14, samples=204 iops : min= 1, max= 27, avg=11.48, stdev= 5.33, samples=204 write: IOPS=12, BW=51.1KiB/s (52.4kB/s)(5256KiB/102806msec); 0 zone resets slat (usec): min=34, max=11573, avg=250.42, stdev=688.91 clat (msec): min=142, max=1606, avg=858.30, stdev=223.13 lat (msec): min=142, max=1606, avg=858.56, stdev=223.16 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 506], 10.00th=[ 600], 20.00th=[ 684], | 30.00th=[ 751], 40.00th=[ 802], 50.00th=[ 852], 60.00th=[ 902], | 70.00th=[ 953], 80.00th=[ 1028], 90.00th=[ 1133], 95.00th=[ 1250], | 99.00th=[ 1469], 99.50th=[ 1569], 99.90th=[ 1586], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 7, max= 145, per=24.86%, avg=50.23, stdev=21.22, samples=204 iops : min= 1, max= 36, avg=12.05, stdev= 5.35, samples=204 lat (msec) : 20=0.04%, 50=0.12%, 100=0.43%, 250=1.76%, 500=41.72% lat (msec) : 750=19.88%, 1000=24.06%, 2000=11.99% cpu : usr=0.09%, sys=0.59%, ctx=4158, 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=146173: Mon Sep 7 07:26:38 2026 read: IOPS=12, BW=49.2KiB/s (50.4kB/s)(5060KiB/102867msec) slat (usec): min=2672, max=72317, avg=13351.47, stdev=7287.31 clat (msec): min=19, max=737, avg=397.27, stdev=91.55 lat (msec): min=33, max=760, avg=410.63, stdev=92.40 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 271], 10.00th=[ 296], 20.00th=[ 326], | 30.00th=[ 351], 40.00th=[ 372], 50.00th=[ 393], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 472], 90.00th=[ 514], 95.00th=[ 542], | 99.00th=[ 634], 99.50th=[ 651], 99.90th=[ 701], 99.95th=[ 735], | 99.99th=[ 735] bw ( KiB/s): min= 7, max= 119, per=25.34%, avg=49.16, stdev=21.96, samples=202 iops : min= 1, max= 29, avg=11.78, stdev= 5.54, samples=202 write: IOPS=12, BW=50.4KiB/s (51.6kB/s)(5180KiB/102867msec); 0 zone resets slat (usec): min=33, max=18134, avg=319.13, stdev=1009.54 clat (msec): min=127, max=1578, avg=867.59, stdev=218.29 lat (msec): min=127, max=1578, avg=867.91, stdev=218.33 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 518], 10.00th=[ 600], 20.00th=[ 693], | 30.00th=[ 760], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 911], | 70.00th=[ 969], 80.00th=[ 1020], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1452], 99.50th=[ 1519], 99.90th=[ 1586], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 7, max= 95, per=24.68%, avg=49.86, stdev=19.95, samples=203 iops : min= 1, max= 23, avg=11.96, stdev= 5.01, samples=203 lat (msec) : 20=0.04%, 50=0.20%, 100=0.16%, 250=1.64%, 500=42.58% lat (msec) : 750=19.80%, 1000=23.28%, 2000=12.30% cpu : usr=0.09%, sys=0.61%, ctx=4436, 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=195KiB/s (200kB/s), 48.3KiB/s-49.2KiB/s (49.5kB/s-50.4kB/s), io=19.6MiB (20.5MB), run=102806-102992msec WRITE: bw=203KiB/s (208kB/s), 50.4KiB/s-51.1KiB/s (51.6kB/s-52.4kB/s), io=20.4MiB (21.4MB), run=102806-102992msec 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=146192: Mon Sep 7 07:26:48 2026 read: IOPS=2, BW=91.1MiB/s (95.5MB/s)(40.0MiB/439msec) slat (nsec): min=45603k, max=45603k, avg=45602794.00, stdev= 0.00 clat (nsec): min=366742k, max=366742k, avg=366741924.00, stdev= 0.00 lat (nsec): min=412350k, max=412350k, avg=412349680.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 368], 10.00th=[ 368], 20.00th=[ 368], | 30.00th=[ 368], 40.00th=[ 368], 50.00th=[ 368], 60.00th=[ 368], | 70.00th=[ 368], 80.00th=[ 368], 90.00th=[ 368], 95.00th=[ 368], | 99.00th=[ 368], 99.50th=[ 368], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.28%, 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=91.1MiB/s (95.5MB/s), 91.1MiB/s-91.1MiB/s (95.5MB/s-95.5MB/s), io=40.0MiB (41.9MB), run=439-439msec 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