== sanity test 398c: run fio to test AIO ================= 09:22:31 (1788873751) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.674664 s, 62.2 MB/s osc.lustre-OST0000-osc-ffff95d4a9271800.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=149056: Tue Sep 8 09:25:03 2026 write: IOPS=18, BW=73.8KiB/s (75.6kB/s)(10.0MiB/138768msec); 0 zone resets slat (usec): min=23, max=15630, avg=212.60, stdev=826.98 clat (msec): min=261, max=1760, avg=865.95, stdev=229.52 lat (msec): min=261, max=1760, avg=866.17, stdev=229.55 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 523], 10.00th=[ 617], 20.00th=[ 684], | 30.00th=[ 751], 40.00th=[ 793], 50.00th=[ 844], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 1028], 90.00th=[ 1167], 95.00th=[ 1301], | 99.00th=[ 1485], 99.50th=[ 1552], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 254, per=25.14%, avg=74.17, stdev=31.48, samples=272 iops : min= 1, max= 63, avg=18.15, stdev= 7.91, samples=272 lat (msec) : 500=4.61%, 750=26.09%, 1000=44.88%, 2000=24.41% cpu : usr=0.05%, sys=0.26%, ctx=2217, 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=149057: Tue Sep 8 09:25:03 2026 write: IOPS=18, BW=73.8KiB/s (75.6kB/s)(10.0MiB/138679msec); 0 zone resets slat (usec): min=23, max=18216, avg=215.30, stdev=935.22 clat (msec): min=61, max=1831, avg=865.31, stdev=230.14 lat (msec): min=62, max=1831, avg=865.53, stdev=230.16 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 493], 10.00th=[ 617], 20.00th=[ 693], | 30.00th=[ 743], 40.00th=[ 793], 50.00th=[ 852], 60.00th=[ 902], | 70.00th=[ 969], 80.00th=[ 1036], 90.00th=[ 1150], 95.00th=[ 1284], | 99.00th=[ 1469], 99.50th=[ 1536], 99.90th=[ 1737], 99.95th=[ 1821], | 99.99th=[ 1838] bw ( KiB/s): min= 7, max= 164, per=25.00%, avg=73.75, stdev=30.31, samples=273 iops : min= 1, max= 41, avg=18.05, stdev= 7.62, samples=273 lat (msec) : 100=0.04%, 250=0.59%, 500=4.57%, 750=25.47%, 1000=45.23% lat (msec) : 2000=24.10% cpu : usr=0.05%, sys=0.25%, ctx=2014, 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=149058: Tue Sep 8 09:25:03 2026 write: IOPS=18, BW=73.8KiB/s (75.6kB/s)(10.0MiB/138772msec); 0 zone resets slat (usec): min=22, max=26242, avg=208.70, stdev=914.65 clat (msec): min=268, max=1787, avg=866.26, stdev=230.30 lat (msec): min=269, max=1787, avg=866.47, stdev=230.30 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 514], 10.00th=[ 617], 20.00th=[ 693], | 30.00th=[ 743], 40.00th=[ 793], 50.00th=[ 844], 60.00th=[ 894], | 70.00th=[ 969], 80.00th=[ 1036], 90.00th=[ 1150], 95.00th=[ 1267], | 99.00th=[ 1519], 99.50th=[ 1670], 99.90th=[ 1754], 99.95th=[ 1787], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 254, per=25.23%, avg=74.43, stdev=36.86, samples=271 iops : min= 1, max= 63, avg=18.23, stdev= 9.24, samples=271 lat (msec) : 500=4.73%, 750=26.37%, 1000=44.61%, 2000=24.30% cpu : usr=0.05%, sys=0.25%, ctx=1601, 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=149059: Tue Sep 8 09:25:03 2026 write: IOPS=18, BW=73.8KiB/s (75.6kB/s)(10.0MiB/138766msec); 0 zone resets slat (usec): min=23, max=27601, avg=202.55, stdev=905.78 clat (msec): min=138, max=1756, avg=866.78, stdev=228.45 lat (msec): min=138, max=1756, avg=866.98, stdev=228.43 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 498], 10.00th=[ 617], 20.00th=[ 701], | 30.00th=[ 751], 40.00th=[ 793], 50.00th=[ 844], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 1036], 90.00th=[ 1167], 95.00th=[ 1284], | 99.00th=[ 1485], 99.50th=[ 1569], 99.90th=[ 1620], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 207, per=24.74%, avg=72.98, stdev=32.80, samples=276 iops : min= 1, max= 51, avg=17.87, stdev= 8.22, samples=276 lat (msec) : 250=0.39%, 500=4.84%, 750=25.00%, 1000=45.43%, 2000=24.34% cpu : usr=0.04%, sys=0.24%, ctx=1876, 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=295KiB/s (302kB/s), 73.8KiB/s-73.8KiB/s (75.6kB/s-75.6kB/s), io=40.0MiB (41.9MB), run=138679-138772msec 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=149090: Tue Sep 8 09:26:46 2026 read: IOPS=13, BW=52.4KiB/s (53.7kB/s)(5048KiB/96306msec) slat (usec): min=2635, max=48651, avg=12720.23, stdev=6818.74 clat (msec): min=31, max=665, avg=372.25, stdev=91.53 lat (msec): min=43, max=695, avg=384.98, stdev=92.70 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 239], 10.00th=[ 264], 20.00th=[ 300], | 30.00th=[ 326], 40.00th=[ 351], 50.00th=[ 368], 60.00th=[ 388], | 70.00th=[ 409], 80.00th=[ 447], 90.00th=[ 493], 95.00th=[ 527], | 99.00th=[ 609], 99.50th=[ 642], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] bw ( KiB/s): min= 7, max= 135, per=24.93%, avg=51.86, stdev=24.05, samples=191 iops : min= 1, max= 33, avg=12.50, stdev= 6.02, samples=191 write: IOPS=13, BW=53.9KiB/s (55.2kB/s)(5192KiB/96306msec); 0 zone resets slat (usec): min=26, max=12646, avg=272.80, stdev=686.42 clat (msec): min=162, max=1699, avg=810.39, stdev=211.91 lat (msec): min=162, max=1699, avg=810.66, stdev=211.90 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 498], 10.00th=[ 558], 20.00th=[ 634], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 793], 60.00th=[ 852], | 70.00th=[ 911], 80.00th=[ 969], 90.00th=[ 1099], 95.00th=[ 1200], | 99.00th=[ 1401], 99.50th=[ 1502], 99.90th=[ 1603], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7, max= 103, per=24.66%, avg=53.27, stdev=21.32, samples=191 iops : min= 1, max= 25, avg=12.85, stdev= 5.39, samples=191 lat (msec) : 50=0.12%, 100=0.27%, 250=3.16%, 500=43.75%, 750=22.54% lat (msec) : 1000=22.27%, 2000=7.89% cpu : usr=0.11%, sys=0.78%, ctx=4717, 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=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=149091: Tue Sep 8 09:26:46 2026 read: IOPS=12, BW=51.7KiB/s (52.9kB/s)(4976KiB/96238msec) slat (usec): min=40, max=52133, avg=13162.11, stdev=7249.43 clat (msec): min=18, max=756, avg=381.03, stdev=99.52 lat (msec): min=24, max=765, avg=394.21, stdev=100.62 clat percentiles (msec): | 1.00th=[ 79], 5.00th=[ 236], 10.00th=[ 271], 20.00th=[ 305], | 30.00th=[ 330], 40.00th=[ 355], 50.00th=[ 372], 60.00th=[ 397], | 70.00th=[ 426], 80.00th=[ 460], 90.00th=[ 510], 95.00th=[ 558], | 99.00th=[ 634], 99.50th=[ 651], 99.90th=[ 735], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 104, per=24.72%, avg=51.42, stdev=21.41, samples=190 iops : min= 1, max= 26, avg=12.38, stdev= 5.36, samples=190 write: IOPS=13, BW=54.7KiB/s (56.0kB/s)(5264KiB/96238msec); 0 zone resets slat (usec): min=31, max=13182, avg=300.04, stdev=879.58 clat (msec): min=83, max=1698, avg=796.16, stdev=222.87 lat (msec): min=83, max=1698, avg=796.47, stdev=222.87 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 464], 10.00th=[ 535], 20.00th=[ 617], | 30.00th=[ 676], 40.00th=[ 735], 50.00th=[ 785], 60.00th=[ 844], | 70.00th=[ 894], 80.00th=[ 961], 90.00th=[ 1099], 95.00th=[ 1200], | 99.00th=[ 1385], 99.50th=[ 1452], 99.90th=[ 1586], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7, max= 119, per=25.11%, avg=54.23, stdev=21.48, samples=190 iops : min= 1, max= 29, avg=13.08, stdev= 5.40, samples=190 lat (msec) : 20=0.04%, 50=0.23%, 100=0.27%, 250=3.55%, 500=42.38% lat (msec) : 750=24.69%, 1000=20.39%, 2000=8.44% cpu : usr=0.15%, sys=0.77%, ctx=4958, 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=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=149092: Tue Sep 8 09:26:46 2026 read: IOPS=12, BW=51.7KiB/s (52.9kB/s)(4984KiB/96412msec) slat (usec): min=2918, max=62620, avg=13076.93, stdev=7134.25 clat (msec): min=31, max=692, avg=377.97, stdev=90.09 lat (msec): min=44, max=699, avg=391.06, stdev=90.99 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 239], 10.00th=[ 264], 20.00th=[ 309], | 30.00th=[ 334], 40.00th=[ 355], 50.00th=[ 376], 60.00th=[ 397], | 70.00th=[ 418], 80.00th=[ 447], 90.00th=[ 493], 95.00th=[ 542], | 99.00th=[ 634], 99.50th=[ 659], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 120, per=24.70%, avg=51.37, stdev=24.75, samples=190 iops : min= 1, max= 30, avg=12.37, stdev= 6.19, samples=190 write: IOPS=13, BW=54.5KiB/s (55.8kB/s)(5256KiB/96412msec); 0 zone resets slat (usec): min=24, max=36408, avg=332.00, stdev=1452.73 clat (msec): min=91, max=1694, avg=800.72, stdev=215.35 lat (msec): min=91, max=1694, avg=801.05, stdev=215.36 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 481], 10.00th=[ 542], 20.00th=[ 634], | 30.00th=[ 684], 40.00th=[ 743], 50.00th=[ 785], 60.00th=[ 835], | 70.00th=[ 894], 80.00th=[ 961], 90.00th=[ 1070], 95.00th=[ 1167], | 99.00th=[ 1401], 99.50th=[ 1536], 99.90th=[ 1670], 99.95th=[ 1687], | 99.99th=[ 1687] bw ( KiB/s): min= 7, max= 112, per=24.80%, avg=53.57, stdev=20.09, samples=191 iops : min= 1, max= 28, avg=12.92, stdev= 5.10, samples=191 lat (msec) : 50=0.04%, 100=0.23%, 250=3.63%, 500=43.87%, 750=22.15% lat (msec) : 1000=22.07%, 2000=8.01% cpu : usr=0.13%, sys=0.72%, ctx=5014, 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=149093: Tue Sep 8 09:26:46 2026 read: IOPS=13, BW=52.6KiB/s (53.9kB/s)(5060KiB/96147msec) slat (usec): min=2743, max=46509, avg=12973.41, stdev=7140.51 clat (msec): min=29, max=849, avg=379.65, stdev=94.62 lat (msec): min=34, max=858, avg=392.63, stdev=95.62 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 241], 10.00th=[ 264], 20.00th=[ 305], | 30.00th=[ 330], 40.00th=[ 351], 50.00th=[ 376], 60.00th=[ 397], | 70.00th=[ 422], 80.00th=[ 451], 90.00th=[ 498], 95.00th=[ 550], | 99.00th=[ 642], 99.50th=[ 659], 99.90th=[ 835], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 128, per=25.06%, avg=52.12, stdev=21.47, samples=191 iops : min= 1, max= 32, avg=12.55, stdev= 5.42, samples=191 write: IOPS=13, BW=53.9KiB/s (55.2kB/s)(5180KiB/96147msec); 0 zone resets slat (usec): min=24, max=8597, avg=254.82, stdev=585.07 clat (msec): min=164, max=1605, avg=801.98, stdev=214.41 lat (msec): min=164, max=1605, avg=802.24, stdev=214.43 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 485], 10.00th=[ 542], 20.00th=[ 634], | 30.00th=[ 684], 40.00th=[ 743], 50.00th=[ 793], 60.00th=[ 835], | 70.00th=[ 894], 80.00th=[ 953], 90.00th=[ 1099], 95.00th=[ 1200], | 99.00th=[ 1401], 99.50th=[ 1536], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 15, max= 111, per=24.55%, avg=53.03, stdev=19.82, samples=191 iops : min= 3, max= 27, avg=12.79, stdev= 4.99, samples=191 lat (msec) : 50=0.04%, 100=0.12%, 250=3.63%, 500=43.83%, 750=22.89% lat (msec) : 1000=22.15%, 2000=7.34% cpu : usr=0.11%, sys=0.84%, ctx=5145, 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=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=208KiB/s (213kB/s), 51.7KiB/s-52.6KiB/s (52.9kB/s-53.9kB/s), io=19.6MiB (20.5MB), run=96147-96412msec WRITE: bw=217KiB/s (222kB/s), 53.9KiB/s-54.7KiB/s (55.2kB/s-56.0kB/s), io=20.4MiB (21.4MB), run=96147-96412msec 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=149110: Tue Sep 8 09:26:54 2026 read: IOPS=2, BW=90.3MiB/s (94.7MB/s)(40.0MiB/443msec) slat (nsec): min=21456k, max=21456k, avg=21456282.00, stdev= 0.00 clat (nsec): min=390795k, max=390795k, avg=390795255.00, stdev= 0.00 lat (nsec): min=412256k, max=412256k, avg=412256409.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 393], 10.00th=[ 393], 20.00th=[ 393], | 30.00th=[ 393], 40.00th=[ 393], 50.00th=[ 393], 60.00th=[ 393], | 70.00th=[ 393], 80.00th=[ 393], 90.00th=[ 393], 95.00th=[ 393], | 99.00th=[ 393], 99.50th=[ 393], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.49%, 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=90.3MiB/s (94.7MB/s), 90.3MiB/s-90.3MiB/s (94.7MB/s-94.7MB/s), io=40.0MiB (41.9MB), run=443-443msec 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