== sanity test 398c: run fio to test AIO ================= 11:17:02 (1786979822) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.483726 s, 86.7 MB/s osc.lustre-OST0000-osc-ffff9d297114d000.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=146693: Mon Aug 17 11:19:37 2026 write: IOPS=17, BW=70.4KiB/s (72.1kB/s)(10.0MiB/145496msec); 0 zone resets slat (usec): min=49, max=14666, avg=263.11, stdev=728.18 clat (msec): min=85, max=1884, avg=908.07, stdev=244.19 lat (msec): min=85, max=1884, avg=908.34, stdev=244.19 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 523], 10.00th=[ 625], 20.00th=[ 735], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 902], 60.00th=[ 944], | 70.00th=[ 1011], 80.00th=[ 1083], 90.00th=[ 1217], 95.00th=[ 1334], | 99.00th=[ 1620], 99.50th=[ 1737], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1888] bw ( KiB/s): min= 7, max= 240, per=24.83%, avg=69.78, stdev=28.77, samples=289 iops : min= 1, max= 60, avg=16.98, stdev= 7.23, samples=289 lat (msec) : 100=0.04%, 250=0.66%, 500=3.63%, 750=18.83%, 1000=45.94% lat (msec) : 2000=30.90% cpu : usr=0.04%, sys=0.29%, ctx=1952, 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=146694: Mon Aug 17 11:19:37 2026 write: IOPS=17, BW=70.4KiB/s (72.1kB/s)(10.0MiB/145451msec); 0 zone resets slat (usec): min=40, max=12239, avg=248.98, stdev=669.34 clat (msec): min=173, max=2034, avg=907.88, stdev=245.01 lat (msec): min=173, max=2034, avg=908.13, stdev=245.01 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 527], 10.00th=[ 625], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 902], 60.00th=[ 953], | 70.00th=[ 1011], 80.00th=[ 1083], 90.00th=[ 1200], 95.00th=[ 1334], | 99.00th=[ 1603], 99.50th=[ 1804], 99.90th=[ 1938], 99.95th=[ 1955], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 256, per=25.18%, avg=70.76, stdev=35.22, samples=285 iops : min= 1, max= 64, avg=17.23, stdev= 8.83, samples=285 lat (msec) : 250=0.62%, 500=3.71%, 750=19.02%, 1000=45.00%, 2000=31.60% lat (msec) : >=2000=0.04% cpu : usr=0.04%, sys=0.28%, ctx=1810, 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=146695: Mon Aug 17 11:19:37 2026 write: IOPS=17, BW=70.6KiB/s (72.3kB/s)(10.0MiB/145114msec); 0 zone resets slat (usec): min=51, max=14314, avg=289.12, stdev=777.27 clat (msec): min=120, max=2034, avg=906.22, stdev=246.42 lat (msec): min=126, max=2034, avg=906.52, stdev=246.37 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 514], 10.00th=[ 625], 20.00th=[ 735], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 902], 60.00th=[ 944], | 70.00th=[ 1020], 80.00th=[ 1083], 90.00th=[ 1217], 95.00th=[ 1318], | 99.00th=[ 1636], 99.50th=[ 1687], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 193, per=25.09%, avg=70.50, stdev=30.95, samples=286 iops : min= 1, max= 48, avg=17.16, stdev= 7.75, samples=286 lat (msec) : 250=0.70%, 500=4.02%, 750=18.36%, 1000=45.35%, 2000=31.45% lat (msec) : >=2000=0.12% cpu : usr=0.05%, sys=0.28%, ctx=2278, 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=146696: Mon Aug 17 11:19:37 2026 write: IOPS=17, BW=70.4KiB/s (72.1kB/s)(10.0MiB/145459msec); 0 zone resets slat (usec): min=35, max=26428, avg=273.21, stdev=941.88 clat (msec): min=148, max=2033, avg=907.65, stdev=245.97 lat (msec): min=148, max=2033, avg=907.92, stdev=245.96 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 518], 10.00th=[ 617], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 852], 50.00th=[ 902], 60.00th=[ 944], | 70.00th=[ 1011], 80.00th=[ 1083], 90.00th=[ 1217], 95.00th=[ 1318], | 99.00th=[ 1603], 99.50th=[ 1670], 99.90th=[ 1888], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 256, per=24.91%, avg=70.01, stdev=33.37, samples=288 iops : min= 1, max= 64, avg=17.04, stdev= 8.36, samples=288 lat (msec) : 250=0.62%, 500=3.91%, 750=19.41%, 1000=44.38%, 2000=31.60% lat (msec) : >=2000=0.08% cpu : usr=0.04%, sys=0.29%, ctx=2167, 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=282KiB/s (288kB/s), 70.4KiB/s-70.6KiB/s (72.1kB/s-72.3kB/s), io=40.0MiB (41.9MB), run=145114-145496msec 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=146727: Mon Aug 17 11:21:26 2026 read: IOPS=12, BW=50.0KiB/s (51.2kB/s)(5048KiB/100941msec) slat (usec): min=2758, max=54486, avg=13535.06, stdev=7199.85 clat (msec): min=38, max=843, avg=393.71, stdev=93.43 lat (msec): min=45, max=868, avg=407.25, stdev=94.58 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 262], 10.00th=[ 284], 20.00th=[ 321], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 409], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 518], 95.00th=[ 550], | 99.00th=[ 634], 99.50th=[ 676], 99.90th=[ 768], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 135, per=25.18%, avg=49.85, stdev=22.70, samples=199 iops : min= 1, max= 33, avg=11.99, stdev= 5.72, samples=199 write: IOPS=12, BW=51.4KiB/s (52.7kB/s)(5192KiB/100941msec); 0 zone resets slat (usec): min=42, max=15965, avg=339.10, stdev=914.87 clat (msec): min=227, max=1828, avg=845.65, stdev=203.53 lat (msec): min=229, max=1828, avg=845.99, stdev=203.48 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 531], 10.00th=[ 609], 20.00th=[ 684], | 30.00th=[ 743], 40.00th=[ 793], 50.00th=[ 844], 60.00th=[ 894], | 70.00th=[ 936], 80.00th=[ 995], 90.00th=[ 1099], 95.00th=[ 1183], | 99.00th=[ 1418], 99.50th=[ 1502], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 120, per=24.81%, avg=51.11, stdev=19.70, samples=199 iops : min= 1, max= 30, avg=12.31, stdev= 4.92, samples=199 lat (msec) : 50=0.12%, 100=0.08%, 250=1.64%, 500=42.58%, 750=20.47% lat (msec) : 1000=25.23%, 2000=9.88% cpu : usr=0.08%, sys=0.68%, ctx=4411, 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=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=146728: Mon Aug 17 11:21:26 2026 read: IOPS=12, BW=49.2KiB/s (50.4kB/s)(4976KiB/101081msec) slat (usec): min=62, max=56706, avg=13536.55, stdev=7048.03 clat (msec): min=29, max=830, avg=389.20, stdev=94.75 lat (msec): min=37, max=848, avg=402.75, stdev=95.51 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 249], 10.00th=[ 279], 20.00th=[ 313], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 405], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 514], 95.00th=[ 542], | 99.00th=[ 600], 99.50th=[ 634], 99.90th=[ 827], 99.95th=[ 835], | 99.99th=[ 835] bw ( KiB/s): min= 7, max= 112, per=24.65%, avg=48.81, stdev=21.35, samples=200 iops : min= 1, max= 28, avg=11.74, stdev= 5.39, samples=200 write: IOPS=13, BW=52.1KiB/s (53.3kB/s)(5264KiB/101081msec); 0 zone resets slat (usec): min=56, max=13805, avg=312.71, stdev=753.10 clat (msec): min=95, max=1840, avg=847.32, stdev=212.46 lat (msec): min=95, max=1841, avg=847.64, stdev=212.49 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 514], 10.00th=[ 617], 20.00th=[ 693], | 30.00th=[ 751], 40.00th=[ 802], 50.00th=[ 844], 60.00th=[ 885], | 70.00th=[ 936], 80.00th=[ 1003], 90.00th=[ 1099], 95.00th=[ 1183], | 99.00th=[ 1385], 99.50th=[ 1586], 99.90th=[ 1821], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 7, max= 120, per=24.91%, avg=51.31, stdev=19.69, samples=201 iops : min= 1, max= 30, avg=12.36, stdev= 4.95, samples=201 lat (msec) : 50=0.20%, 100=0.23%, 250=2.46%, 500=41.37%, 750=19.96% lat (msec) : 1000=25.23%, 2000=10.55% cpu : usr=0.10%, sys=0.64%, ctx=4466, 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=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=146729: Mon Aug 17 11:21:26 2026 read: IOPS=12, BW=49.2KiB/s (50.4kB/s)(4984KiB/101261msec) slat (usec): min=2906, max=55594, avg=13360.57, stdev=6625.00 clat (msec): min=11, max=869, avg=393.44, stdev=95.54 lat (msec): min=35, max=892, avg=406.80, stdev=96.28 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 259], 10.00th=[ 288], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 472], 90.00th=[ 514], 95.00th=[ 542], | 99.00th=[ 634], 99.50th=[ 776], 99.90th=[ 827], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 8, max= 135, per=24.82%, avg=49.15, stdev=22.21, samples=199 iops : min= 2, max= 33, avg=11.82, stdev= 5.64, samples=199 write: IOPS=12, BW=51.9KiB/s (53.2kB/s)(5256KiB/101261msec); 0 zone resets slat (usec): min=54, max=12813, avg=350.61, stdev=970.31 clat (msec): min=119, max=1846, avg=845.15, stdev=208.61 lat (msec): min=119, max=1846, avg=845.50, stdev=208.64 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 510], 10.00th=[ 592], 20.00th=[ 676], | 30.00th=[ 743], 40.00th=[ 793], 50.00th=[ 844], 60.00th=[ 894], | 70.00th=[ 944], 80.00th=[ 1011], 90.00th=[ 1099], 95.00th=[ 1200], | 99.00th=[ 1334], 99.50th=[ 1385], 99.90th=[ 1754], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 103, per=25.00%, avg=51.50, stdev=19.38, samples=199 iops : min= 1, max= 25, avg=12.41, stdev= 4.83, samples=199 lat (msec) : 20=0.04%, 50=0.20%, 100=0.08%, 250=1.88%, 500=42.46% lat (msec) : 750=19.73%, 1000=24.80%, 2000=10.82% cpu : usr=0.09%, sys=0.72%, ctx=4623, majf=0, minf=12 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=146730: Mon Aug 17 11:21:26 2026 read: IOPS=12, BW=50.2KiB/s (51.4kB/s)(5060KiB/100804msec) slat (usec): min=2623, max=61086, avg=13477.97, stdev=7296.03 clat (msec): min=28, max=865, avg=391.98, stdev=98.41 lat (msec): min=37, max=881, avg=405.47, stdev=98.90 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 255], 10.00th=[ 284], 20.00th=[ 313], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 405], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 518], 95.00th=[ 558], | 99.00th=[ 667], 99.50th=[ 709], 99.90th=[ 852], 99.95th=[ 869], | 99.99th=[ 869] bw ( KiB/s): min= 7, max= 112, per=25.13%, avg=49.75, stdev=20.13, samples=200 iops : min= 1, max= 28, avg=11.98, stdev= 5.09, samples=200 write: IOPS=12, BW=51.4KiB/s (52.6kB/s)(5180KiB/100804msec); 0 zone resets slat (usec): min=50, max=17608, avg=373.51, stdev=1052.14 clat (msec): min=140, max=1758, avg=847.24, stdev=205.97 lat (msec): min=140, max=1758, avg=847.62, stdev=205.99 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 518], 10.00th=[ 592], 20.00th=[ 676], | 30.00th=[ 735], 40.00th=[ 793], 50.00th=[ 852], 60.00th=[ 894], | 70.00th=[ 953], 80.00th=[ 1011], 90.00th=[ 1099], 95.00th=[ 1183], | 99.00th=[ 1368], 99.50th=[ 1385], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 120, per=24.60%, avg=50.67, stdev=20.41, samples=200 iops : min= 1, max= 30, avg=12.20, stdev= 5.11, samples=200 lat (msec) : 50=0.08%, 100=0.23%, 250=2.07%, 500=42.34%, 750=20.78% lat (msec) : 1000=23.44%, 2000=11.05% cpu : usr=0.11%, sys=0.69%, ctx=4832, majf=0, minf=12 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=198KiB/s (203kB/s), 49.2KiB/s-50.2KiB/s (50.4kB/s-51.4kB/s), io=19.6MiB (20.5MB), run=100804-101261msec WRITE: bw=206KiB/s (211kB/s), 51.4KiB/s-52.1KiB/s (52.6kB/s-53.3kB/s), io=20.4MiB (21.4MB), run=100804-101261msec 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=146750: Mon Aug 17 11:21:37 2026 read: IOPS=2, BW=84.2MiB/s (88.3MB/s)(40.0MiB/475msec) slat (nsec): min=35681k, max=35681k, avg=35680572.00, stdev= 0.00 clat (nsec): min=428184k, max=428184k, avg=428184388.00, stdev= 0.00 lat (nsec): min=463871k, max=463871k, avg=463870692.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.95%, ctx=25, 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=84.2MiB/s (88.3MB/s), 84.2MiB/s-84.2MiB/s (88.3MB/s-88.3MB/s), io=40.0MiB (41.9MB), run=475-475msec 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