== sanity test 398c: run fio to test AIO ================= 09:55:40 (1790949340) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.371407 s, 113 MB/s osc.lustre-OST0000-osc-ffff88946a71c000.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=146109: Fri Oct 2 09:58:09 2026 write: IOPS=18, BW=73.0KiB/s (75.8kB/s)(10.0MiB/138401msec); 0 zone resets slat (usec): min=23, max=16388, avg=186.59, stdev=752.89 clat (msec): min=212, max=1752, avg=864.38, stdev=202.75 lat (msec): min=213, max=1752, avg=864.57, stdev=202.75 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 558], 10.00th=[ 634], 20.00th=[ 709], | 30.00th=[ 768], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 902], | 70.00th=[ 953], 80.00th=[ 1011], 90.00th=[ 1116], 95.00th=[ 1217], | 99.00th=[ 1385], 99.50th=[ 1435], 99.90th=[ 1636], 99.95th=[ 1720], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 255, per=25.33%, avg=74.71, stdev=34.55, samples=270 iops : min= 1, max= 63, avg=18.22, stdev= 8.66, samples=270 lat (msec) : 250=0.62%, 500=3.16%, 750=22.03%, 1000=51.56%, 2000=22.62% cpu : usr=0.05%, sys=0.23%, ctx=1642, 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=146110: Fri Oct 2 09:58:09 2026 write: IOPS=18, BW=73.9KiB/s (75.7kB/s)(10.0MiB/138549msec); 0 zone resets slat (usec): min=22, max=13620, avg=178.92, stdev=714.09 clat (msec): min=236, max=1461, avg=864.95, stdev=201.52 lat (msec): min=236, max=1461, avg=865.13, stdev=201.52 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 558], 10.00th=[ 642], 20.00th=[ 709], | 30.00th=[ 760], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 902], | 70.00th=[ 944], 80.00th=[ 1028], 90.00th=[ 1133], 95.00th=[ 1234], | 99.00th=[ 1351], 99.50th=[ 1401], 99.90th=[ 1469], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 7, max= 254, per=25.05%, avg=73.89, stdev=32.39, samples=273 iops : min= 1, max= 63, avg=18.01, stdev= 8.10, samples=273 lat (msec) : 250=0.62%, 500=2.89%, 750=23.59%, 1000=49.84%, 2000=23.05% cpu : usr=0.04%, sys=0.24%, ctx=1814, 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=146111: Fri Oct 2 09:58:09 2026 write: IOPS=18, BW=73.9KiB/s (75.7kB/s)(10.0MiB/138550msec); 0 zone resets slat (usec): min=22, max=10332, avg=177.87, stdev=568.33 clat (msec): min=178, max=1534, avg=864.83, stdev=203.39 lat (msec): min=178, max=1534, avg=865.01, stdev=203.40 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 567], 10.00th=[ 634], 20.00th=[ 701], | 30.00th=[ 760], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 1020], 90.00th=[ 1116], 95.00th=[ 1217], | 99.00th=[ 1368], 99.50th=[ 1401], 99.90th=[ 1502], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 7, max= 254, per=25.33%, avg=74.71, stdev=29.46, samples=270 iops : min= 1, max= 63, avg=18.22, stdev= 7.36, samples=270 lat (msec) : 250=0.66%, 500=2.73%, 750=24.34%, 1000=48.75%, 2000=23.52% cpu : usr=0.05%, sys=0.21%, ctx=1575, 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=146112: Fri Oct 2 09:58:09 2026 write: IOPS=18, BW=73.9KiB/s (75.7kB/s)(10.0MiB/138543msec); 0 zone resets slat (usec): min=22, max=24227, avg=192.78, stdev=880.36 clat (msec): min=78, max=1488, avg=864.78, stdev=197.59 lat (msec): min=78, max=1489, avg=864.97, stdev=197.60 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 575], 10.00th=[ 634], 20.00th=[ 701], | 30.00th=[ 768], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 902], | 70.00th=[ 953], 80.00th=[ 1020], 90.00th=[ 1133], 95.00th=[ 1217], | 99.00th=[ 1368], 99.50th=[ 1385], 99.90th=[ 1485], 99.95th=[ 1485], | 99.99th=[ 1485] bw ( KiB/s): min= 7, max= 143, per=24.87%, avg=73.35, stdev=30.03, samples=275 iops : min= 1, max= 35, avg=17.88, stdev= 7.48, samples=275 lat (msec) : 100=0.04%, 250=0.04%, 500=3.01%, 750=23.95%, 1000=50.00% lat (msec) : 2000=22.97% cpu : usr=0.04%, sys=0.24%, ctx=2144, 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=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=296KiB/s (303kB/s), 73.9KiB/s-73.0KiB/s (75.7kB/s-75.8kB/s), io=40.0MiB (41.9MB), run=138401-138550msec 6% of I/O are 1-page (PAGE_SIZE=4096), max 50% 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=146142: Fri Oct 2 09:59:51 2026 read: IOPS=13, BW=53.2KiB/s (54.5kB/s)(5048KiB/94901msec) slat (usec): min=2655, max=59774, avg=13517.31, stdev=7856.01 clat (msec): min=13, max=1140, avg=369.97, stdev=101.49 lat (msec): min=21, max=1162, avg=383.50, stdev=103.03 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 230], 10.00th=[ 264], 20.00th=[ 296], | 30.00th=[ 326], 40.00th=[ 342], 50.00th=[ 363], 60.00th=[ 384], | 70.00th=[ 409], 80.00th=[ 435], 90.00th=[ 489], 95.00th=[ 531], | 99.00th=[ 651], 99.50th=[ 735], 99.90th=[ 1083], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 128, per=25.26%, avg=53.04, stdev=22.27, samples=187 iops : min= 1, max= 32, avg=12.75, stdev= 5.58, samples=187 write: IOPS=13, BW=54.7KiB/s (56.0kB/s)(5192KiB/94901msec); 0 zone resets slat (usec): min=25, max=15773, avg=248.38, stdev=850.92 clat (msec): min=314, max=1857, avg=793.87, stdev=214.83 lat (msec): min=314, max=1857, avg=794.12, stdev=214.83 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 464], 10.00th=[ 535], 20.00th=[ 617], | 30.00th=[ 676], 40.00th=[ 735], 50.00th=[ 776], 60.00th=[ 827], | 70.00th=[ 894], 80.00th=[ 961], 90.00th=[ 1062], 95.00th=[ 1150], | 99.00th=[ 1401], 99.50th=[ 1485], 99.90th=[ 1838], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 15, max= 135, per=24.92%, avg=54.58, stdev=21.43, samples=186 iops : min= 3, max= 33, avg=13.15, stdev= 5.40, samples=186 lat (msec) : 20=0.08%, 50=0.04%, 100=0.27%, 250=3.44%, 500=44.88% lat (msec) : 750=22.15%, 1000=20.70%, 2000=8.44% cpu : usr=0.10%, sys=0.68%, ctx=4222, 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=146143: Fri Oct 2 09:59:51 2026 read: IOPS=13, BW=52.3KiB/s (53.6kB/s)(4976KiB/95145msec) slat (usec): min=55, max=61171, avg=13246.88, stdev=7869.02 clat (msec): min=29, max=803, avg=375.27, stdev=97.71 lat (msec): min=29, max=819, avg=388.53, stdev=99.26 clat percentiles (msec): | 1.00th=[ 178], 5.00th=[ 236], 10.00th=[ 262], 20.00th=[ 300], | 30.00th=[ 326], 40.00th=[ 347], 50.00th=[ 368], 60.00th=[ 388], | 70.00th=[ 414], 80.00th=[ 447], 90.00th=[ 502], 95.00th=[ 550], | 99.00th=[ 651], 99.50th=[ 709], 99.90th=[ 785], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 133, per=24.71%, avg=51.89, stdev=22.89, samples=188 iops : min= 1, max= 33, avg=12.47, stdev= 5.77, samples=188 write: IOPS=13, BW=55.3KiB/s (56.7kB/s)(5264KiB/95145msec); 0 zone resets slat (usec): min=24, max=16329, avg=237.48, stdev=855.03 clat (msec): min=99, max=1614, avg=788.58, stdev=211.73 lat (msec): min=99, max=1614, avg=788.82, stdev=211.73 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 456], 10.00th=[ 550], 20.00th=[ 617], | 30.00th=[ 676], 40.00th=[ 726], 50.00th=[ 776], 60.00th=[ 835], | 70.00th=[ 894], 80.00th=[ 961], 90.00th=[ 1062], 95.00th=[ 1133], | 99.00th=[ 1334], 99.50th=[ 1435], 99.90th=[ 1603], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7, max= 112, per=25.03%, avg=54.82, stdev=21.85, samples=188 iops : min= 1, max= 28, avg=13.20, stdev= 5.47, samples=188 lat (msec) : 50=0.08%, 100=0.31%, 250=3.44%, 500=43.48%, 750=23.71% lat (msec) : 1000=21.17%, 2000=7.81% cpu : usr=0.10%, sys=0.68%, ctx=4280, 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=146144: Fri Oct 2 09:59:51 2026 read: IOPS=13, BW=52.4KiB/s (53.6kB/s)(4984KiB/95144msec) slat (usec): min=2563, max=75943, avg=13663.65, stdev=8197.27 clat (msec): min=21, max=765, avg=371.79, stdev=98.65 lat (msec): min=37, max=775, avg=385.46, stdev=100.09 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 234], 10.00th=[ 259], 20.00th=[ 292], | 30.00th=[ 317], 40.00th=[ 342], 50.00th=[ 368], 60.00th=[ 388], | 70.00th=[ 409], 80.00th=[ 439], 90.00th=[ 502], 95.00th=[ 550], | 99.00th=[ 642], 99.50th=[ 693], 99.90th=[ 760], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 135, per=24.80%, avg=52.09, stdev=24.39, samples=188 iops : min= 1, max= 33, avg=12.52, stdev= 6.11, samples=188 write: IOPS=13, BW=55.2KiB/s (56.6kB/s)(5256KiB/95144msec); 0 zone resets slat (usec): min=23, max=13687, avg=255.11, stdev=823.58 clat (msec): min=235, max=1510, avg=790.67, stdev=207.44 lat (msec): min=235, max=1510, avg=790.93, stdev=207.44 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 460], 10.00th=[ 542], 20.00th=[ 617], | 30.00th=[ 676], 40.00th=[ 735], 50.00th=[ 776], 60.00th=[ 827], | 70.00th=[ 885], 80.00th=[ 969], 90.00th=[ 1062], 95.00th=[ 1150], | 99.00th=[ 1334], 99.50th=[ 1368], 99.90th=[ 1485], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 15, max= 112, per=24.83%, avg=54.37, stdev=21.46, samples=189 iops : min= 3, max= 28, avg=13.10, stdev= 5.39, samples=189 lat (msec) : 50=0.08%, 100=0.27%, 250=3.55%, 500=43.55%, 750=23.40% lat (msec) : 1000=20.62%, 2000=8.52% cpu : usr=0.12%, sys=0.69%, ctx=4511, 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=146145: Fri Oct 2 09:59:51 2026 read: IOPS=13, BW=53.3KiB/s (54.5kB/s)(5060KiB/94987msec) slat (usec): min=2526, max=76367, avg=13394.34, stdev=7993.61 clat (msec): min=21, max=747, avg=371.67, stdev=94.21 lat (msec): min=26, max=770, avg=385.07, stdev=95.48 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 236], 10.00th=[ 259], 20.00th=[ 296], | 30.00th=[ 321], 40.00th=[ 342], 50.00th=[ 363], 60.00th=[ 384], | 70.00th=[ 414], 80.00th=[ 443], 90.00th=[ 493], 95.00th=[ 542], | 99.00th=[ 642], 99.50th=[ 684], 99.90th=[ 743], 99.95th=[ 751], | 99.99th=[ 751] bw ( KiB/s): min= 7, max= 119, per=25.35%, avg=53.24, stdev=22.31, samples=187 iops : min= 1, max= 29, avg=12.80, stdev= 5.54, samples=187 write: IOPS=13, BW=54.5KiB/s (55.8kB/s)(5180KiB/94987msec); 0 zone resets slat (usec): min=24, max=16428, avg=231.13, stdev=776.61 clat (msec): min=227, max=1612, avg=794.74, stdev=209.54 lat (msec): min=228, max=1613, avg=794.97, stdev=209.53 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 477], 10.00th=[ 531], 20.00th=[ 625], | 30.00th=[ 684], 40.00th=[ 735], 50.00th=[ 785], 60.00th=[ 827], | 70.00th=[ 894], 80.00th=[ 961], 90.00th=[ 1083], 95.00th=[ 1167], | 99.00th=[ 1351], 99.50th=[ 1418], 99.90th=[ 1569], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7, max= 110, per=24.58%, avg=53.82, stdev=19.11, samples=188 iops : min= 1, max= 27, avg=12.95, stdev= 4.83, samples=188 lat (msec) : 50=0.08%, 100=0.08%, 250=3.71%, 500=44.49%, 750=23.09% lat (msec) : 1000=20.31%, 2000=8.24% cpu : usr=0.11%, sys=0.62%, ctx=4266, 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=211KiB/s (216kB/s), 52.3KiB/s-53.3KiB/s (53.6kB/s-54.5kB/s), io=19.6MiB (20.5MB), run=94901-95145msec WRITE: bw=220KiB/s (225kB/s), 54.5KiB/s-55.3KiB/s (55.8kB/s-56.7kB/s), io=20.4MiB (21.4MB), run=94901-95145msec 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=146162: Fri Oct 2 10:00:01 2026 read: IOPS=2, BW=89.5MiB/s (93.8MB/s)(40.0MiB/447msec) slat (nsec): min=37651k, max=37651k, avg=37651444.00, stdev= 0.00 clat (nsec): min=387279k, max=387279k, avg=387279370.00, stdev= 0.00 lat (nsec): min=424935k, max=424935k, avg=424935497.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 388], 10.00th=[ 388], 20.00th=[ 388], | 30.00th=[ 388], 40.00th=[ 388], 50.00th=[ 388], 60.00th=[ 388], | 70.00th=[ 388], 80.00th=[ 388], 90.00th=[ 388], 95.00th=[ 388], | 99.00th=[ 388], 99.50th=[ 388], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=3.14%, ctx=30, majf=0, minf=7 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=89.5MiB/s (93.8MB/s), 89.5MiB/s-89.5MiB/s (93.8MB/s-93.8MB/s), io=40.0MiB (41.9MB), run=447-447msec 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