== sanity test 398c: run fio to test AIO ================= 17:17:21 (1777583841) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.476199 s, 88.1 MB/s osc.lustre-OST0000-osc-ffff88a891709800.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=145573: Thu Apr 30 17:20:10 2026 write: IOPS=16, BW=64.0KiB/s (65.6kB/s)(10.0MiB/159954msec); 0 zone resets slat (usec): min=47, max=17016, avg=220.55, stdev=688.73 clat (msec): min=98, max=2068, avg=998.66, stdev=272.23 lat (msec): min=99, max=2068, avg=998.89, stdev=272.24 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 609], 10.00th=[ 676], 20.00th=[ 776], | 30.00th=[ 852], 40.00th=[ 919], 50.00th=[ 978], 60.00th=[ 1045], | 70.00th=[ 1116], 80.00th=[ 1217], 90.00th=[ 1351], 95.00th=[ 1469], | 99.00th=[ 1754], 99.50th=[ 1905], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2072] bw ( KiB/s): min= 7, max= 135, per=24.83%, avg=63.57, stdev=31.51, samples=317 iops : min= 1, max= 33, avg=15.45, stdev= 7.88, samples=317 lat (msec) : 100=0.04%, 250=0.04%, 500=2.46%, 750=15.27%, 1000=36.41% lat (msec) : 2000=45.62%, >=2000=0.16% cpu : usr=0.03%, sys=0.25%, ctx=1697, 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=145574: Thu Apr 30 17:20:10 2026 write: IOPS=16, BW=64.0KiB/s (65.5kB/s)(10.0MiB/159993msec); 0 zone resets slat (usec): min=39, max=14751, avg=268.29, stdev=855.88 clat (msec): min=313, max=2044, avg=998.90, stdev=270.69 lat (msec): min=313, max=2044, avg=999.17, stdev=270.69 clat percentiles (msec): | 1.00th=[ 477], 5.00th=[ 609], 10.00th=[ 676], 20.00th=[ 776], | 30.00th=[ 852], 40.00th=[ 919], 50.00th=[ 978], 60.00th=[ 1036], | 70.00th=[ 1116], 80.00th=[ 1217], 90.00th=[ 1368], 95.00th=[ 1469], | 99.00th=[ 1720], 99.50th=[ 1888], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 128, per=24.83%, avg=63.57, stdev=28.92, samples=317 iops : min= 1, max= 32, avg=15.46, stdev= 7.23, samples=317 lat (msec) : 500=2.58%, 750=14.65%, 1000=36.88%, 2000=45.78%, >=2000=0.12% cpu : usr=0.04%, sys=0.24%, ctx=2260, 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=145575: Thu Apr 30 17:20:10 2026 write: IOPS=16, BW=64.0KiB/s (65.6kB/s)(10.0MiB/159952msec); 0 zone resets slat (usec): min=38, max=18836, avg=230.99, stdev=657.72 clat (msec): min=99, max=1991, avg=998.52, stdev=266.60 lat (msec): min=100, max=1991, avg=998.75, stdev=266.60 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 575], 10.00th=[ 684], 20.00th=[ 785], | 30.00th=[ 860], 40.00th=[ 919], 50.00th=[ 978], 60.00th=[ 1045], | 70.00th=[ 1116], 80.00th=[ 1217], 90.00th=[ 1334], 95.00th=[ 1452], | 99.00th=[ 1754], 99.50th=[ 1888], 99.90th=[ 1972], 99.95th=[ 1972], | 99.99th=[ 1989] bw ( KiB/s): min= 7, max= 128, per=25.56%, avg=65.43, stdev=30.78, samples=308 iops : min= 1, max= 32, avg=15.92, stdev= 7.73, samples=308 lat (msec) : 100=0.04%, 500=1.72%, 750=14.88%, 1000=36.72%, 2000=46.64% cpu : usr=0.04%, sys=0.24%, ctx=2053, 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=145576: Thu Apr 30 17:20:10 2026 write: IOPS=16, BW=64.0KiB/s (65.6kB/s)(10.0MiB/159917msec); 0 zone resets slat (usec): min=51, max=27772, avg=282.32, stdev=1066.32 clat (msec): min=102, max=2044, avg=998.74, stdev=279.01 lat (msec): min=103, max=2044, avg=999.02, stdev=279.00 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 592], 10.00th=[ 684], 20.00th=[ 776], | 30.00th=[ 852], 40.00th=[ 919], 50.00th=[ 986], 60.00th=[ 1045], | 70.00th=[ 1116], 80.00th=[ 1217], 90.00th=[ 1351], 95.00th=[ 1469], | 99.00th=[ 1871], 99.50th=[ 1955], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 143, per=24.83%, avg=63.57, stdev=27.89, samples=317 iops : min= 1, max= 35, avg=15.46, stdev= 6.99, samples=317 lat (msec) : 250=0.70%, 500=1.64%, 750=14.77%, 1000=36.33%, 2000=46.29% lat (msec) : >=2000=0.27% cpu : usr=0.04%, sys=0.25%, ctx=2272, 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=256KiB/s (262kB/s), 64.0KiB/s-64.0KiB/s (65.5kB/s-65.6kB/s), io=40.0MiB (41.9MB), run=159917-159993msec 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=145609: Thu Apr 30 17:22:11 2026 read: IOPS=11, BW=45.1KiB/s (46.2kB/s)(5048KiB/111919msec) slat (usec): min=89, max=64599, avg=13979.19, stdev=7457.56 clat (msec): min=14, max=823, avg=431.06, stdev=104.60 lat (msec): min=21, max=831, avg=445.05, stdev=105.64 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 292], 10.00th=[ 313], 20.00th=[ 351], | 30.00th=[ 380], 40.00th=[ 401], 50.00th=[ 426], 60.00th=[ 447], | 70.00th=[ 477], 80.00th=[ 506], 90.00th=[ 558], 95.00th=[ 609], | 99.00th=[ 701], 99.50th=[ 718], 99.90th=[ 818], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 104, per=25.03%, avg=44.55, stdev=20.46, samples=222 iops : min= 1, max= 26, avg=10.68, stdev= 5.15, samples=222 write: IOPS=11, BW=46.4KiB/s (47.5kB/s)(5192KiB/111919msec); 0 zone resets slat (usec): min=54, max=16596, avg=329.81, stdev=872.40 clat (msec): min=149, max=1715, avg=945.79, stdev=235.94 lat (msec): min=149, max=1716, avg=946.12, stdev=235.93 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 575], 10.00th=[ 651], 20.00th=[ 743], | 30.00th=[ 810], 40.00th=[ 877], 50.00th=[ 953], 60.00th=[ 1011], | 70.00th=[ 1070], 80.00th=[ 1150], 90.00th=[ 1250], 95.00th=[ 1318], | 99.00th=[ 1502], 99.50th=[ 1603], 99.90th=[ 1687], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 7, max= 104, per=24.83%, avg=46.19, stdev=19.43, samples=220 iops : min= 1, max= 26, avg=11.08, stdev= 4.85, samples=220 lat (msec) : 20=0.04%, 50=0.27%, 100=0.23%, 250=0.70%, 500=38.05% lat (msec) : 750=21.09%, 1000=18.48%, 2000=21.13% cpu : usr=0.09%, sys=0.61%, ctx=4877, 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=145610: Thu Apr 30 17:22:11 2026 read: IOPS=11, BW=44.4KiB/s (45.4kB/s)(4976KiB/112144msec) slat (usec): min=2956, max=60663, avg=14198.27, stdev=7649.06 clat (msec): min=21, max=795, avg=432.69, stdev=98.89 lat (msec): min=37, max=817, avg=446.89, stdev=99.93 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 296], 10.00th=[ 321], 20.00th=[ 355], | 30.00th=[ 380], 40.00th=[ 401], 50.00th=[ 426], 60.00th=[ 451], | 70.00th=[ 477], 80.00th=[ 514], 90.00th=[ 558], 95.00th=[ 609], | 99.00th=[ 684], 99.50th=[ 726], 99.90th=[ 793], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 111, per=24.63%, avg=43.84, stdev=19.40, samples=222 iops : min= 1, max= 27, avg=10.50, stdev= 4.86, samples=222 write: IOPS=11, BW=46.9KiB/s (48.1kB/s)(5264KiB/112144msec); 0 zone resets slat (usec): min=53, max=16394, avg=337.60, stdev=992.79 clat (msec): min=296, max=1717, avg=938.48, stdev=237.92 lat (msec): min=296, max=1717, avg=938.82, stdev=237.89 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 567], 10.00th=[ 651], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 860], 50.00th=[ 936], 60.00th=[ 1003], | 70.00th=[ 1070], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1334], | 99.00th=[ 1519], 99.50th=[ 1569], 99.90th=[ 1620], 99.95th=[ 1720], | 99.99th=[ 1720] bw ( KiB/s): min= 7, max= 103, per=25.01%, avg=46.53, stdev=19.08, samples=222 iops : min= 1, max= 25, avg=11.17, stdev= 4.80, samples=222 lat (msec) : 50=0.04%, 100=0.27%, 250=0.55%, 500=37.85%, 750=21.68% lat (msec) : 1000=18.95%, 2000=20.66% cpu : usr=0.08%, sys=0.66%, ctx=4464, 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=145611: Thu Apr 30 17:22:11 2026 read: IOPS=11, BW=44.4KiB/s (45.5kB/s)(4984KiB/112145msec) slat (usec): min=2697, max=51636, avg=14084.72, stdev=7572.89 clat (msec): min=20, max=797, avg=429.99, stdev=97.62 lat (msec): min=28, max=808, avg=444.08, stdev=98.68 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 300], 10.00th=[ 317], 20.00th=[ 351], | 30.00th=[ 376], 40.00th=[ 401], 50.00th=[ 422], 60.00th=[ 443], | 70.00th=[ 472], 80.00th=[ 506], 90.00th=[ 558], 95.00th=[ 600], | 99.00th=[ 709], 99.50th=[ 726], 99.90th=[ 793], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 120, per=24.86%, avg=44.25, stdev=21.73, samples=221 iops : min= 1, max= 30, avg=10.60, stdev= 5.43, samples=221 write: IOPS=11, BW=46.9KiB/s (47.0kB/s)(5256KiB/112145msec); 0 zone resets slat (usec): min=59, max=14078, avg=353.42, stdev=1054.80 clat (msec): min=204, max=1676, avg=941.30, stdev=239.85 lat (msec): min=204, max=1677, avg=941.65, stdev=239.86 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 584], 10.00th=[ 651], 20.00th=[ 726], | 30.00th=[ 802], 40.00th=[ 877], 50.00th=[ 944], 60.00th=[ 1003], | 70.00th=[ 1062], 80.00th=[ 1150], 90.00th=[ 1250], 95.00th=[ 1334], | 99.00th=[ 1519], 99.50th=[ 1552], 99.90th=[ 1620], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 8, max= 112, per=24.80%, avg=46.13, stdev=19.66, samples=223 iops : min= 2, max= 28, avg=11.07, stdev= 4.92, samples=223 lat (msec) : 50=0.08%, 100=0.12%, 250=0.39%, 500=39.14%, 750=20.47% lat (msec) : 1000=19.14%, 2000=20.66% cpu : usr=0.10%, sys=0.60%, ctx=4611, 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=145612: Thu Apr 30 17:22:11 2026 read: IOPS=11, BW=45.3KiB/s (46.4kB/s)(5060KiB/111706msec) slat (usec): min=3060, max=54338, avg=14083.67, stdev=7475.18 clat (msec): min=13, max=763, avg=433.48, stdev=94.24 lat (msec): min=41, max=773, avg=447.58, stdev=94.74 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 300], 10.00th=[ 326], 20.00th=[ 359], | 30.00th=[ 384], 40.00th=[ 405], 50.00th=[ 430], 60.00th=[ 451], | 70.00th=[ 477], 80.00th=[ 510], 90.00th=[ 558], 95.00th=[ 592], | 99.00th=[ 684], 99.50th=[ 718], 99.90th=[ 735], 99.95th=[ 768], | 99.99th=[ 768] bw ( KiB/s): min= 7, max= 111, per=25.29%, avg=45.01, stdev=18.04, samples=221 iops : min= 1, max= 27, avg=10.79, stdev= 4.53, samples=221 write: IOPS=11, BW=46.4KiB/s (47.5kB/s)(5180KiB/111706msec); 0 zone resets slat (usec): min=41, max=9981, avg=296.09, stdev=643.55 clat (msec): min=288, max=1649, avg=940.22, stdev=231.75 lat (msec): min=288, max=1649, avg=940.51, stdev=231.72 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 584], 10.00th=[ 651], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 869], 50.00th=[ 944], 60.00th=[ 1003], | 70.00th=[ 1070], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1334], | 99.00th=[ 1469], 99.50th=[ 1536], 99.90th=[ 1636], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 7, max= 112, per=24.50%, avg=45.57, stdev=19.18, samples=222 iops : min= 1, max= 28, avg=10.93, stdev= 4.83, samples=222 lat (msec) : 20=0.04%, 50=0.12%, 100=0.08%, 250=0.39%, 500=38.79% lat (msec) : 750=22.27%, 1000=17.93%, 2000=20.39% cpu : usr=0.08%, sys=0.59%, ctx=4810, 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=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=179KiB/s (183kB/s), 44.4KiB/s-45.3KiB/s (45.4kB/s-46.4kB/s), io=19.6MiB (20.5MB), run=111706-112145msec WRITE: bw=186KiB/s (191kB/s), 46.4KiB/s-46.9KiB/s (47.5kB/s-48.1kB/s), io=20.4MiB (21.4MB), run=111706-112145msec 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=145631: Thu Apr 30 17:22:18 2026 read: IOPS=1, BW=77.0MiB/s (81.8MB/s)(40.0MiB/513msec) slat (nsec): min=23779k, max=23779k, avg=23779440.00, stdev= 0.00 clat (nsec): min=478419k, max=478419k, avg=478419380.00, stdev= 0.00 lat (nsec): min=502226k, max=502226k, avg=502226339.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 481], 10.00th=[ 481], 20.00th=[ 481], | 30.00th=[ 481], 40.00th=[ 481], 50.00th=[ 481], 60.00th=[ 481], | 70.00th=[ 481], 80.00th=[ 481], 90.00th=[ 481], 95.00th=[ 481], | 99.00th=[ 481], 99.50th=[ 481], 99.90th=[ 481], 99.95th=[ 481], | 99.99th=[ 481] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.15%, ctx=44, majf=0, minf=10 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=77.0MiB/s (81.8MB/s), 77.0MiB/s-77.0MiB/s (81.8MB/s-81.8MB/s), io=40.0MiB (41.9MB), run=513-513msec 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