== sanity test 398c: run fio to test AIO ================= 14:41:51 (1789584111) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.665365 s, 63.0 MB/s osc.lustre-OST0000-osc-ffff89e9d9180800.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=145593: Wed Sep 16 14:44:18 2026 write: IOPS=18, BW=74.9KiB/s (76.7kB/s)(10.0MiB/136719msec); 0 zone resets slat (usec): min=22, max=11776, avg=167.33, stdev=592.84 clat (msec): min=147, max=1665, avg=853.26, stdev=211.74 lat (msec): min=147, max=1665, avg=853.43, stdev=211.75 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 523], 10.00th=[ 617], 20.00th=[ 693], | 30.00th=[ 743], 40.00th=[ 793], 50.00th=[ 844], 60.00th=[ 885], | 70.00th=[ 936], 80.00th=[ 1003], 90.00th=[ 1133], 95.00th=[ 1250], | 99.00th=[ 1452], 99.50th=[ 1502], 99.90th=[ 1620], 99.95th=[ 1636], | 99.99th=[ 1670] bw ( KiB/s): min= 7, max= 128, per=25.07%, avg=74.97, stdev=30.30, samples=269 iops : min= 1, max= 32, avg=18.30, stdev= 7.59, samples=269 lat (msec) : 250=0.70%, 500=3.55%, 750=26.48%, 1000=49.65%, 2000=19.61% cpu : usr=0.06%, sys=0.22%, ctx=1790, 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=145594: Wed Sep 16 14:44:18 2026 write: IOPS=18, BW=75.1KiB/s (76.9kB/s)(10.0MiB/136432msec); 0 zone resets slat (usec): min=22, max=21978, avg=181.20, stdev=853.90 clat (msec): min=150, max=2268, avg=852.02, stdev=220.37 lat (msec): min=150, max=2268, avg=852.20, stdev=220.38 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 531], 10.00th=[ 617], 20.00th=[ 693], | 30.00th=[ 743], 40.00th=[ 793], 50.00th=[ 835], 60.00th=[ 877], | 70.00th=[ 936], 80.00th=[ 995], 90.00th=[ 1133], 95.00th=[ 1250], | 99.00th=[ 1452], 99.50th=[ 1502], 99.90th=[ 2123], 99.95th=[ 2232], | 99.99th=[ 2265] bw ( KiB/s): min= 7, max= 215, per=25.14%, avg=75.18, stdev=29.95, samples=268 iops : min= 1, max= 53, avg=18.36, stdev= 7.50, samples=268 lat (msec) : 250=0.62%, 500=3.40%, 750=27.19%, 1000=49.06%, 2000=19.53% lat (msec) : >=2000=0.20% cpu : usr=0.07%, sys=0.24%, ctx=1768, 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=145595: Wed Sep 16 14:44:18 2026 write: IOPS=18, BW=74.9KiB/s (76.7kB/s)(10.0MiB/136720msec); 0 zone resets slat (usec): min=21, max=12630, avg=145.72, stdev=530.86 clat (msec): min=55, max=1502, avg=853.23, stdev=207.54 lat (msec): min=56, max=1502, avg=853.38, stdev=207.55 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 535], 10.00th=[ 617], 20.00th=[ 693], | 30.00th=[ 751], 40.00th=[ 793], 50.00th=[ 844], 60.00th=[ 877], | 70.00th=[ 936], 80.00th=[ 1003], 90.00th=[ 1133], 95.00th=[ 1250], | 99.00th=[ 1418], 99.50th=[ 1452], 99.90th=[ 1469], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 7, max= 214, per=25.07%, avg=74.97, stdev=33.82, samples=269 iops : min= 1, max= 53, avg=18.31, stdev= 8.44, samples=269 lat (msec) : 100=0.04%, 250=0.12%, 500=3.48%, 750=26.48%, 1000=50.12% lat (msec) : 2000=19.77% cpu : usr=0.04%, sys=0.21%, ctx=1563, 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=145596: Wed Sep 16 14:44:18 2026 write: IOPS=18, BW=74.9KiB/s (76.7kB/s)(10.0MiB/136721msec); 0 zone resets slat (usec): min=22, max=13454, avg=164.67, stdev=624.46 clat (msec): min=139, max=1618, avg=853.44, stdev=210.37 lat (msec): min=139, max=1618, avg=853.60, stdev=210.38 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 542], 10.00th=[ 609], 20.00th=[ 693], | 30.00th=[ 743], 40.00th=[ 802], 50.00th=[ 844], 60.00th=[ 885], | 70.00th=[ 927], 80.00th=[ 1003], 90.00th=[ 1133], 95.00th=[ 1250], | 99.00th=[ 1418], 99.50th=[ 1452], 99.90th=[ 1536], 99.95th=[ 1552], | 99.99th=[ 1620] bw ( KiB/s): min= 7, max= 248, per=25.07%, avg=74.96, stdev=30.47, samples=269 iops : min= 1, max= 62, avg=18.30, stdev= 7.63, samples=269 lat (msec) : 250=0.62%, 500=3.05%, 750=27.19%, 1000=48.55%, 2000=20.59% cpu : usr=0.06%, sys=0.25%, ctx=1832, 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=300KiB/s (307kB/s), 74.9KiB/s-75.1KiB/s (76.7kB/s-76.9kB/s), io=40.0MiB (41.9MB), run=136432-136721msec 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=145626: Wed Sep 16 14:46:12 2026 read: IOPS=12, BW=48.6KiB/s (49.8kB/s)(5048KiB/103793msec) slat (usec): min=2460, max=55434, avg=14408.25, stdev=7874.79 clat (msec): min=15, max=994, avg=405.56, stdev=119.12 lat (msec): min=26, max=1001, avg=419.98, stdev=120.56 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 249], 10.00th=[ 284], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 393], 60.00th=[ 418], | 70.00th=[ 447], 80.00th=[ 485], 90.00th=[ 550], 95.00th=[ 609], | 99.00th=[ 785], 99.50th=[ 869], 99.90th=[ 902], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 111, per=25.11%, avg=48.21, stdev=22.65, samples=205 iops : min= 1, max= 27, avg=11.52, stdev= 5.67, samples=205 write: IOPS=12, BW=50.0KiB/s (51.2kB/s)(5192KiB/103793msec); 0 zone resets slat (usec): min=25, max=14000, avg=266.74, stdev=983.37 clat (msec): min=232, max=2054, avg=867.51, stdev=266.18 lat (msec): min=232, max=2054, avg=867.78, stdev=266.25 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 523], 10.00th=[ 575], 20.00th=[ 634], | 30.00th=[ 701], 40.00th=[ 768], 50.00th=[ 835], 60.00th=[ 894], | 70.00th=[ 961], 80.00th=[ 1070], 90.00th=[ 1250], 95.00th=[ 1401], | 99.00th=[ 1586], 99.50th=[ 1720], 99.90th=[ 1989], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 127, per=24.90%, avg=49.80, stdev=22.15, samples=204 iops : min= 1, max= 31, avg=11.92, stdev= 5.61, samples=204 lat (msec) : 20=0.04%, 50=0.20%, 100=0.20%, 250=2.23%, 500=40.00% lat (msec) : 750=24.84%, 1000=19.45%, 2000=13.01%, >=2000=0.04% cpu : usr=0.09%, sys=0.63%, ctx=4553, 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=145627: Wed Sep 16 14:46:12 2026 read: IOPS=11, BW=47.9KiB/s (49.1kB/s)(4976KiB/103869msec) slat (usec): min=49, max=64443, avg=14428.27, stdev=8404.90 clat (msec): min=17, max=907, avg=404.99, stdev=117.21 lat (msec): min=18, max=924, avg=419.42, stdev=118.60 clat percentiles (msec): | 1.00th=[ 99], 5.00th=[ 245], 10.00th=[ 279], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 372], 50.00th=[ 393], 60.00th=[ 418], | 70.00th=[ 447], 80.00th=[ 489], 90.00th=[ 558], 95.00th=[ 609], | 99.00th=[ 776], 99.50th=[ 802], 99.90th=[ 894], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 119, per=24.74%, avg=47.49, stdev=23.11, samples=205 iops : min= 1, max= 29, avg=11.34, stdev= 5.79, samples=205 write: IOPS=12, BW=50.7KiB/s (51.9kB/s)(5264KiB/103869msec); 0 zone resets slat (usec): min=34, max=25267, avg=303.07, stdev=1311.84 clat (msec): min=163, max=2056, avg=865.49, stdev=266.08 lat (msec): min=163, max=2056, avg=865.79, stdev=266.05 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 506], 10.00th=[ 567], 20.00th=[ 642], | 30.00th=[ 709], 40.00th=[ 776], 50.00th=[ 835], 60.00th=[ 894], | 70.00th=[ 969], 80.00th=[ 1053], 90.00th=[ 1234], 95.00th=[ 1401], | 99.00th=[ 1586], 99.50th=[ 1670], 99.90th=[ 1989], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 111, per=24.99%, avg=49.98, stdev=21.51, samples=206 iops : min= 1, max= 27, avg=11.97, stdev= 5.40, samples=206 lat (msec) : 20=0.04%, 50=0.27%, 100=0.20%, 250=2.38%, 500=39.18% lat (msec) : 750=24.02%, 1000=20.82%, 2000=13.05%, >=2000=0.04% cpu : usr=0.10%, sys=0.64%, ctx=4667, 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=145628: Wed Sep 16 14:46:12 2026 read: IOPS=11, BW=47.9KiB/s (49.1kB/s)(4984KiB/103993msec) slat (usec): min=2878, max=51973, avg=14255.86, stdev=7948.37 clat (msec): min=9, max=891, avg=406.91, stdev=113.72 lat (msec): min=24, max=906, avg=421.18, stdev=115.19 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 251], 10.00th=[ 292], 20.00th=[ 321], | 30.00th=[ 342], 40.00th=[ 372], 50.00th=[ 393], 60.00th=[ 418], | 70.00th=[ 451], 80.00th=[ 489], 90.00th=[ 550], 95.00th=[ 617], | 99.00th=[ 768], 99.50th=[ 802], 99.90th=[ 885], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 7, max= 135, per=25.06%, avg=48.12, stdev=23.14, samples=203 iops : min= 1, max= 33, avg=11.50, stdev= 5.76, samples=203 write: IOPS=12, BW=50.5KiB/s (51.8kB/s)(5256KiB/103993msec); 0 zone resets slat (usec): min=29, max=33165, avg=278.91, stdev=1302.42 clat (msec): min=49, max=1974, avg=864.01, stdev=266.60 lat (msec): min=49, max=1975, avg=864.29, stdev=266.65 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 514], 10.00th=[ 575], 20.00th=[ 642], | 30.00th=[ 701], 40.00th=[ 768], 50.00th=[ 835], 60.00th=[ 894], | 70.00th=[ 961], 80.00th=[ 1045], 90.00th=[ 1234], 95.00th=[ 1401], | 99.00th=[ 1620], 99.50th=[ 1754], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min= 7, max= 119, per=25.04%, avg=50.08, stdev=20.32, samples=204 iops : min= 1, max= 29, avg=11.99, stdev= 5.12, samples=204 lat (msec) : 10=0.04%, 50=0.20%, 100=0.08%, 250=2.23%, 500=39.84% lat (msec) : 750=24.73%, 1000=20.66%, 2000=12.23% cpu : usr=0.08%, sys=0.57%, ctx=4422, 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=145629: Wed Sep 16 14:46:12 2026 read: IOPS=12, BW=48.8KiB/s (49.0kB/s)(5060KiB/103650msec) slat (usec): min=2283, max=53862, avg=14593.56, stdev=8464.69 clat (msec): min=37, max=1052, avg=410.81, stdev=122.56 lat (msec): min=41, max=1068, avg=425.41, stdev=123.94 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 249], 10.00th=[ 279], 20.00th=[ 317], | 30.00th=[ 347], 40.00th=[ 368], 50.00th=[ 393], 60.00th=[ 422], | 70.00th=[ 451], 80.00th=[ 493], 90.00th=[ 567], 95.00th=[ 634], | 99.00th=[ 818], 99.50th=[ 860], 99.90th=[ 885], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 7, max= 120, per=25.64%, avg=49.23, stdev=21.61, samples=201 iops : min= 1, max= 30, avg=11.78, stdev= 5.39, samples=201 write: IOPS=12, BW=49.0KiB/s (51.2kB/s)(5180KiB/103650msec); 0 zone resets slat (usec): min=33, max=15364, avg=225.02, stdev=798.21 clat (msec): min=257, max=2056, avg=862.20, stdev=254.88 lat (msec): min=257, max=2056, avg=862.43, stdev=254.90 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 514], 10.00th=[ 584], 20.00th=[ 642], | 30.00th=[ 709], 40.00th=[ 776], 50.00th=[ 844], 60.00th=[ 894], | 70.00th=[ 953], 80.00th=[ 1045], 90.00th=[ 1200], 95.00th=[ 1334], | 99.00th=[ 1603], 99.50th=[ 1636], 99.90th=[ 2022], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 120, per=24.74%, avg=49.48, stdev=20.71, samples=205 iops : min= 1, max= 30, avg=11.83, stdev= 5.23, samples=205 lat (msec) : 50=0.12%, 100=0.23%, 250=2.23%, 500=39.41%, 750=24.26% lat (msec) : 1000=21.52%, 2000=12.15%, >=2000=0.08% cpu : usr=0.10%, sys=0.65%, ctx=4662, 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=193KiB/s (198kB/s), 47.9KiB/s-48.8KiB/s (49.1kB/s-49.0kB/s), io=19.6MiB (20.5MB), run=103650-103993msec WRITE: bw=201KiB/s (206kB/s), 49.0KiB/s-50.7KiB/s (51.2kB/s-51.9kB/s), io=20.4MiB (21.4MB), run=103650-103993msec 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=145647: Wed Sep 16 14:46:20 2026 read: IOPS=1, BW=69.8MiB/s (73.2MB/s)(40.0MiB/573msec) slat (nsec): min=46515k, max=46515k, avg=46515257.00, stdev= 0.00 clat (nsec): min=496331k, max=496331k, avg=496331460.00, stdev= 0.00 lat (nsec): min=542885k, max=542885k, avg=542885447.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 498], 10.00th=[ 498], 20.00th=[ 498], | 30.00th=[ 498], 40.00th=[ 498], 50.00th=[ 498], 60.00th=[ 498], | 70.00th=[ 498], 80.00th=[ 498], 90.00th=[ 498], 95.00th=[ 498], | 99.00th=[ 498], 99.50th=[ 498], 99.90th=[ 498], 99.95th=[ 498], | 99.99th=[ 498] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.45%, ctx=4, majf=0, minf=9 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=69.8MiB/s (73.2MB/s), 69.8MiB/s-69.8MiB/s (73.2MB/s-73.2MB/s), io=40.0MiB (41.9MB), run=573-573msec 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