== sanity test 398c: run fio to test AIO ================= 15:35:39 (1783971339) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.593164 s, 70.7 MB/s osc.lustre-OST0000-osc-ffff91cf2b59e000.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=145735: Mon Jul 13 15:38:14 2026 write: IOPS=17, BW=70.7KiB/s (72.4kB/s)(10.0MiB/144906msec); 0 zone resets slat (usec): min=37, max=14282, avg=256.24, stdev=820.44 clat (msec): min=232, max=1897, avg=904.52, stdev=242.96 lat (msec): min=233, max=1898, avg=904.77, stdev=242.96 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 518], 10.00th=[ 651], 20.00th=[ 726], | 30.00th=[ 776], 40.00th=[ 827], 50.00th=[ 869], 60.00th=[ 944], | 70.00th=[ 1003], 80.00th=[ 1099], 90.00th=[ 1234], 95.00th=[ 1318], | 99.00th=[ 1552], 99.50th=[ 1636], 99.90th=[ 1754], 99.95th=[ 1871], | 99.99th=[ 1905] bw ( KiB/s): min= 7, max= 256, per=25.47%, avg=71.82, stdev=34.86, samples=281 iops : min= 1, max= 64, avg=17.49, stdev= 8.75, samples=281 lat (msec) : 250=0.62%, 500=3.79%, 750=20.94%, 1000=44.02%, 2000=30.62% cpu : usr=0.04%, sys=0.27%, ctx=2111, majf=0, minf=8 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=145736: Mon Jul 13 15:38:14 2026 write: IOPS=17, BW=70.6KiB/s (72.3kB/s)(10.0MiB/144954msec); 0 zone resets slat (usec): min=36, max=16452, avg=251.03, stdev=827.75 clat (msec): min=233, max=1898, avg=904.52, stdev=246.25 lat (msec): min=233, max=1898, avg=904.77, stdev=246.28 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 514], 10.00th=[ 642], 20.00th=[ 726], | 30.00th=[ 776], 40.00th=[ 827], 50.00th=[ 877], 60.00th=[ 936], | 70.00th=[ 1003], 80.00th=[ 1099], 90.00th=[ 1217], 95.00th=[ 1334], | 99.00th=[ 1636], 99.50th=[ 1687], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1905] bw ( KiB/s): min= 7, max= 256, per=25.06%, avg=70.68, stdev=33.00, samples=285 iops : min= 1, max= 64, avg=17.21, stdev= 8.26, samples=285 lat (msec) : 250=0.62%, 500=3.67%, 750=20.04%, 1000=44.92%, 2000=30.74% cpu : usr=0.05%, sys=0.30%, ctx=2133, 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=145737: Mon Jul 13 15:38:14 2026 write: IOPS=17, BW=70.7KiB/s (72.4kB/s)(10.0MiB/144852msec); 0 zone resets slat (usec): min=36, max=15733, avg=240.67, stdev=739.14 clat (msec): min=235, max=1864, avg=903.89, stdev=242.42 lat (msec): min=235, max=1864, avg=904.14, stdev=242.43 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 523], 10.00th=[ 651], 20.00th=[ 718], | 30.00th=[ 776], 40.00th=[ 835], 50.00th=[ 877], 60.00th=[ 936], | 70.00th=[ 995], 80.00th=[ 1099], 90.00th=[ 1234], 95.00th=[ 1334], | 99.00th=[ 1586], 99.50th=[ 1670], 99.90th=[ 1854], 99.95th=[ 1854], | 99.99th=[ 1871] bw ( KiB/s): min= 7, max= 256, per=25.20%, avg=71.06, stdev=33.04, samples=284 iops : min= 1, max= 64, avg=17.31, stdev= 8.28, samples=284 lat (msec) : 250=0.62%, 500=3.20%, 750=21.56%, 1000=45.66%, 2000=28.95% cpu : usr=0.04%, sys=0.30%, ctx=2134, majf=0, minf=8 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=145738: Mon Jul 13 15:38:14 2026 write: IOPS=17, BW=70.7KiB/s (72.4kB/s)(10.0MiB/144853msec); 0 zone resets slat (usec): min=35, max=19957, avg=248.87, stdev=777.52 clat (msec): min=136, max=1865, avg=904.77, stdev=245.45 lat (msec): min=137, max=1865, avg=905.02, stdev=245.49 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 558], 10.00th=[ 634], 20.00th=[ 726], | 30.00th=[ 776], 40.00th=[ 827], 50.00th=[ 877], 60.00th=[ 944], | 70.00th=[ 1011], 80.00th=[ 1099], 90.00th=[ 1234], 95.00th=[ 1318], | 99.00th=[ 1636], 99.50th=[ 1653], 99.90th=[ 1871], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 7, max= 312, per=25.28%, avg=71.30, stdev=31.25, samples=283 iops : min= 1, max= 78, avg=17.37, stdev= 7.88, samples=283 lat (msec) : 250=0.74%, 500=3.09%, 750=21.84%, 1000=42.27%, 2000=32.07% cpu : usr=0.03%, sys=0.28%, ctx=2400, 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=283KiB/s (289kB/s), 70.6KiB/s-70.7KiB/s (72.3kB/s-72.4kB/s), io=40.0MiB (41.9MB), run=144852-144954msec 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=145768: Mon Jul 13 15:40:06 2026 read: IOPS=12, BW=48.7KiB/s (49.8kB/s)(5048KiB/103757msec) slat (usec): min=2489, max=66833, avg=13951.29, stdev=7713.07 clat (msec): min=35, max=993, avg=406.99, stdev=112.49 lat (msec): min=46, max=1011, avg=420.95, stdev=113.83 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 271], 10.00th=[ 296], 20.00th=[ 326], | 30.00th=[ 347], 40.00th=[ 368], 50.00th=[ 388], 60.00th=[ 409], | 70.00th=[ 430], 80.00th=[ 477], 90.00th=[ 550], 95.00th=[ 642], | 99.00th=[ 776], 99.50th=[ 869], 99.90th=[ 944], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 127, per=25.11%, avg=48.47, stdev=20.27, samples=204 iops : min= 1, max= 31, avg=11.64, stdev= 5.08, samples=204 write: IOPS=12, BW=50.0KiB/s (51.2kB/s)(5192KiB/103757msec); 0 zone resets slat (usec): min=38, max=15125, avg=269.49, stdev=739.20 clat (msec): min=241, max=1747, avg=866.35, stdev=257.38 lat (msec): min=241, max=1747, avg=866.62, stdev=257.38 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 527], 10.00th=[ 584], 20.00th=[ 659], | 30.00th=[ 709], 40.00th=[ 760], 50.00th=[ 810], 60.00th=[ 877], | 70.00th=[ 961], 80.00th=[ 1062], 90.00th=[ 1250], 95.00th=[ 1368], | 99.00th=[ 1620], 99.50th=[ 1636], 99.90th=[ 1737], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 111, per=24.72%, avg=49.43, stdev=20.81, samples=206 iops : min= 1, max= 27, avg=11.87, stdev= 5.23, samples=206 lat (msec) : 50=0.04%, 100=0.12%, 250=1.17%, 500=41.68%, 750=25.04% lat (msec) : 1000=18.98%, 2000=12.97% cpu : usr=0.11%, sys=0.72%, ctx=4616, 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=145769: Mon Jul 13 15:40:06 2026 read: IOPS=11, BW=47.9KiB/s (49.0kB/s)(4976KiB/103971msec) slat (usec): min=87, max=62280, avg=14003.35, stdev=7912.85 clat (msec): min=17, max=945, avg=404.80, stdev=112.23 lat (msec): min=28, max=952, avg=418.81, stdev=113.57 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 264], 10.00th=[ 296], 20.00th=[ 326], | 30.00th=[ 347], 40.00th=[ 368], 50.00th=[ 384], 60.00th=[ 409], | 70.00th=[ 435], 80.00th=[ 477], 90.00th=[ 535], 95.00th=[ 617], | 99.00th=[ 802], 99.50th=[ 844], 99.90th=[ 911], 99.95th=[ 944], | 99.99th=[ 944] bw ( KiB/s): min= 7, max= 110, per=24.48%, avg=47.25, stdev=21.72, samples=206 iops : min= 1, max= 27, avg=11.33, stdev= 5.44, samples=206 write: IOPS=12, BW=50.6KiB/s (51.8kB/s)(5264KiB/103971msec); 0 zone resets slat (usec): min=44, max=12401, avg=286.66, stdev=803.74 clat (msec): min=170, max=1758, avg=866.99, stdev=272.65 lat (msec): min=170, max=1759, avg=867.28, stdev=272.68 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 518], 10.00th=[ 575], 20.00th=[ 651], | 30.00th=[ 701], 40.00th=[ 760], 50.00th=[ 818], 60.00th=[ 877], | 70.00th=[ 961], 80.00th=[ 1062], 90.00th=[ 1267], 95.00th=[ 1401], | 99.00th=[ 1636], 99.50th=[ 1670], 99.90th=[ 1754], 99.95th=[ 1754], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 127, per=25.06%, avg=50.13, stdev=21.24, samples=206 iops : min= 1, max= 31, avg=12.05, stdev= 5.32, samples=206 lat (msec) : 20=0.04%, 50=0.16%, 100=0.08%, 250=1.76%, 500=41.09% lat (msec) : 750=24.80%, 1000=18.59%, 2000=13.48% cpu : usr=0.08%, sys=0.60%, ctx=4375, 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=145770: Mon Jul 13 15:40:06 2026 read: IOPS=11, BW=47.9KiB/s (49.1kB/s)(4984KiB/103969msec) slat (usec): min=2609, max=51689, avg=14280.03, stdev=7679.82 clat (msec): min=12, max=913, avg=399.75, stdev=112.19 lat (msec): min=24, max=930, avg=414.04, stdev=113.49 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 266], 10.00th=[ 292], 20.00th=[ 321], | 30.00th=[ 342], 40.00th=[ 359], 50.00th=[ 380], 60.00th=[ 405], | 70.00th=[ 426], 80.00th=[ 468], 90.00th=[ 531], 95.00th=[ 625], | 99.00th=[ 810], 99.50th=[ 869], 99.90th=[ 902], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 7, max= 118, per=24.88%, avg=48.01, stdev=22.49, samples=204 iops : min= 1, max= 29, avg=11.52, stdev= 5.65, samples=204 write: IOPS=12, BW=50.6KiB/s (51.8kB/s)(5256KiB/103969msec); 0 zone resets slat (usec): min=50, max=11025, avg=277.84, stdev=662.16 clat (msec): min=229, max=1777, avg=870.39, stdev=266.54 lat (msec): min=229, max=1777, avg=870.67, stdev=266.54 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 518], 10.00th=[ 584], 20.00th=[ 659], | 30.00th=[ 709], 40.00th=[ 760], 50.00th=[ 810], 60.00th=[ 885], | 70.00th=[ 961], 80.00th=[ 1070], 90.00th=[ 1250], 95.00th=[ 1418], | 99.00th=[ 1653], 99.50th=[ 1703], 99.90th=[ 1737], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 103, per=24.95%, avg=49.89, stdev=20.72, samples=206 iops : min= 1, max= 25, avg=11.99, stdev= 5.19, samples=206 lat (msec) : 20=0.04%, 50=0.12%, 100=0.12%, 250=1.25%, 500=41.99% lat (msec) : 750=23.79%, 1000=19.34%, 2000=13.36% cpu : usr=0.10%, sys=0.67%, ctx=4799, 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=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=145771: Mon Jul 13 15:40:06 2026 read: IOPS=12, BW=48.7KiB/s (49.9kB/s)(5060KiB/103917msec) slat (usec): min=2282, max=54363, avg=13957.01, stdev=7738.77 clat (msec): min=21, max=955, avg=402.14, stdev=109.68 lat (msec): min=33, max=973, avg=416.10, stdev=110.77 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 264], 10.00th=[ 292], 20.00th=[ 326], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 384], 60.00th=[ 409], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 542], 95.00th=[ 600], | 99.00th=[ 776], 99.50th=[ 844], 99.90th=[ 944], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 7, max= 126, per=24.96%, avg=48.17, stdev=22.16, samples=206 iops : min= 1, max= 31, avg=11.56, stdev= 5.59, samples=206 write: IOPS=12, BW=49.8KiB/s (51.0kB/s)(5180KiB/103917msec); 0 zone resets slat (usec): min=50, max=11533, avg=277.93, stdev=744.08 clat (msec): min=205, max=1817, avg=874.56, stdev=261.54 lat (msec): min=205, max=1818, avg=874.84, stdev=261.57 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 527], 10.00th=[ 575], 20.00th=[ 667], | 30.00th=[ 718], 40.00th=[ 768], 50.00th=[ 827], 60.00th=[ 894], | 70.00th=[ 969], 80.00th=[ 1070], 90.00th=[ 1267], 95.00th=[ 1385], | 99.00th=[ 1603], 99.50th=[ 1703], 99.90th=[ 1754], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 104, per=24.61%, avg=49.22, stdev=20.60, samples=206 iops : min= 1, max= 26, avg=11.83, stdev= 5.16, samples=206 lat (msec) : 50=0.16%, 100=0.12%, 250=1.21%, 500=42.66%, 750=22.73% lat (msec) : 1000=20.00%, 2000=13.12% cpu : usr=0.11%, sys=0.69%, ctx=4809, 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=193KiB/s (198kB/s), 47.9KiB/s-48.7KiB/s (49.0kB/s-49.9kB/s), io=19.6MiB (20.5MB), run=103757-103971msec WRITE: bw=201KiB/s (206kB/s), 49.8KiB/s-50.6KiB/s (51.0kB/s-51.8kB/s), io=20.4MiB (21.4MB), run=103757-103971msec 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=145791: Mon Jul 13 15:40:16 2026 read: IOPS=2, BW=99.5MiB/s (104MB/s)(40.0MiB/402msec) slat (nsec): min=37509k, max=37509k, avg=37509268.00, stdev= 0.00 clat (nsec): min=350580k, max=350580k, avg=350580201.00, stdev= 0.00 lat (nsec): min=388095k, max=388095k, avg=388094894.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 351], 10.00th=[ 351], 20.00th=[ 351], | 30.00th=[ 351], 40.00th=[ 351], 50.00th=[ 351], 60.00th=[ 351], | 70.00th=[ 351], 80.00th=[ 351], 90.00th=[ 351], 95.00th=[ 351], | 99.00th=[ 351], 99.50th=[ 351], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.74%, ctx=41, 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=99.5MiB/s (104MB/s), 99.5MiB/s-99.5MiB/s (104MB/s-104MB/s), io=40.0MiB (41.9MB), run=402-402msec 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