== sanity test 398c: run fio to test AIO ================= 12:20:18 (1788625218) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.606712 s, 69.1 MB/s osc.lustre-OST0000-osc-ffff9f24e5930800.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=145486: Sat Sep 5 12:23:09 2026 write: IOPS=15, BW=63.7KiB/s (65.2kB/s)(10.0MiB/160830msec); 0 zone resets slat (usec): min=26, max=11658, avg=160.11, stdev=524.65 clat (msec): min=149, max=1960, avg=1004.12, stdev=296.53 lat (msec): min=149, max=1960, avg=1004.29, stdev=296.54 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 592], 10.00th=[ 659], 20.00th=[ 751], | 30.00th=[ 852], 40.00th=[ 919], 50.00th=[ 986], 60.00th=[ 1070], | 70.00th=[ 1133], 80.00th=[ 1217], 90.00th=[ 1401], 95.00th=[ 1552], | 99.00th=[ 1770], 99.50th=[ 1838], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 7, max= 231, per=26.45%, avg=67.18, stdev=31.50, samples=300 iops : min= 1, max= 57, avg=16.36, stdev= 7.89, samples=300 lat (msec) : 250=1.25%, 500=1.91%, 750=16.56%, 1000=32.42%, 2000=47.85% cpu : usr=0.04%, sys=0.18%, ctx=1531, 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=145487: Sat Sep 5 12:23:09 2026 write: IOPS=15, BW=63.7KiB/s (65.2kB/s)(10.0MiB/160802msec); 0 zone resets slat (usec): min=21, max=14252, avg=185.21, stdev=687.45 clat (msec): min=135, max=1995, avg=1004.32, stdev=294.14 lat (msec): min=135, max=1995, avg=1004.51, stdev=294.14 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 584], 10.00th=[ 667], 20.00th=[ 768], | 30.00th=[ 860], 40.00th=[ 919], 50.00th=[ 986], 60.00th=[ 1045], | 70.00th=[ 1116], 80.00th=[ 1250], 90.00th=[ 1401], 95.00th=[ 1519], | 99.00th=[ 1804], 99.50th=[ 1821], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 7, max= 228, per=25.92%, avg=65.83, stdev=31.23, samples=306 iops : min= 1, max= 57, avg=16.02, stdev= 7.83, samples=306 lat (msec) : 250=1.25%, 500=1.37%, 750=16.13%, 1000=33.71%, 2000=47.54% cpu : usr=0.04%, sys=0.20%, ctx=1616, 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=145488: Sat Sep 5 12:23:09 2026 write: IOPS=15, BW=63.6KiB/s (65.2kB/s)(10.0MiB/160884msec); 0 zone resets slat (usec): min=21, max=12932, avg=204.35, stdev=751.28 clat (msec): min=197, max=2052, avg=1004.28, stdev=289.39 lat (msec): min=197, max=2052, avg=1004.48, stdev=289.40 clat percentiles (msec): | 1.00th=[ 245], 5.00th=[ 592], 10.00th=[ 676], 20.00th=[ 751], | 30.00th=[ 835], 40.00th=[ 919], 50.00th=[ 986], 60.00th=[ 1070], | 70.00th=[ 1133], 80.00th=[ 1234], 90.00th=[ 1401], 95.00th=[ 1519], | 99.00th=[ 1737], 99.50th=[ 1821], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 254, per=25.52%, avg=64.81, stdev=32.00, samples=311 iops : min= 1, max= 63, avg=15.76, stdev= 8.02, samples=311 lat (msec) : 250=1.25%, 500=1.09%, 750=17.27%, 1000=32.46%, 2000=47.89% lat (msec) : >=2000=0.04% cpu : usr=0.04%, sys=0.19%, ctx=2018, 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=145489: Sat Sep 5 12:23:09 2026 write: IOPS=15, BW=63.6KiB/s (65.2kB/s)(10.0MiB/160882msec); 0 zone resets slat (usec): min=28, max=14013, avg=189.74, stdev=631.40 clat (msec): min=62, max=2054, avg=1004.36, stdev=293.05 lat (msec): min=63, max=2054, avg=1004.56, stdev=293.04 clat percentiles (msec): | 1.00th=[ 239], 5.00th=[ 592], 10.00th=[ 659], 20.00th=[ 751], | 30.00th=[ 844], 40.00th=[ 927], 50.00th=[ 995], 60.00th=[ 1062], | 70.00th=[ 1133], 80.00th=[ 1234], 90.00th=[ 1401], 95.00th=[ 1519], | 99.00th=[ 1787], 99.50th=[ 1871], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 199, per=25.10%, avg=63.75, stdev=31.86, samples=316 iops : min= 1, max= 49, avg=15.50, stdev= 8.00, samples=316 lat (msec) : 100=0.08%, 250=1.25%, 500=1.17%, 750=17.46%, 1000=31.25% lat (msec) : 2000=48.67%, >=2000=0.12% cpu : usr=0.04%, sys=0.22%, ctx=1937, 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=255KiB/s (261kB/s), 63.6KiB/s-63.7KiB/s (65.2kB/s-65.2kB/s), io=40.0MiB (41.9MB), run=160802-160884msec 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=145522: Sat Sep 5 12:24:59 2026 read: IOPS=12, BW=49.3KiB/s (50.5kB/s)(5048KiB/102295msec) slat (usec): min=2433, max=52143, avg=12817.34, stdev=7000.56 clat (msec): min=12, max=788, avg=401.04, stdev=88.26 lat (msec): min=22, max=797, avg=413.86, stdev=89.08 clat percentiles (msec): | 1.00th=[ 232], 5.00th=[ 275], 10.00th=[ 296], 20.00th=[ 330], | 30.00th=[ 355], 40.00th=[ 376], 50.00th=[ 397], 60.00th=[ 418], | 70.00th=[ 443], 80.00th=[ 472], 90.00th=[ 518], 95.00th=[ 550], | 99.00th=[ 634], 99.50th=[ 659], 99.90th=[ 676], 99.95th=[ 785], | 99.99th=[ 785] bw ( KiB/s): min= 7, max= 111, per=25.11%, avg=48.97, stdev=20.86, samples=203 iops : min= 1, max= 27, avg=11.81, stdev= 5.21, samples=203 write: IOPS=12, BW=50.8KiB/s (51.0kB/s)(5192KiB/102295msec); 0 zone resets slat (usec): min=34, max=19074, avg=261.39, stdev=980.56 clat (msec): min=279, max=1628, avg=855.61, stdev=215.08 lat (msec): min=279, max=1628, avg=855.87, stdev=215.07 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 542], 10.00th=[ 592], 20.00th=[ 659], | 30.00th=[ 735], 40.00th=[ 785], 50.00th=[ 835], 60.00th=[ 894], | 70.00th=[ 953], 80.00th=[ 1028], 90.00th=[ 1150], 95.00th=[ 1250], | 99.00th=[ 1385], 99.50th=[ 1418], 99.90th=[ 1536], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 7, max= 111, per=24.80%, avg=50.35, stdev=20.51, samples=202 iops : min= 1, max= 27, avg=12.16, stdev= 5.14, samples=202 lat (msec) : 20=0.08%, 50=0.04%, 100=0.16%, 250=0.74%, 500=43.24% lat (msec) : 750=21.72%, 1000=22.23%, 2000=11.80% cpu : usr=0.10%, sys=0.58%, ctx=4730, 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=145523: Sat Sep 5 12:24:59 2026 read: IOPS=12, BW=48.6KiB/s (49.8kB/s)(4976KiB/102294msec) slat (usec): min=1328, max=48791, avg=12982.69, stdev=7076.51 clat (msec): min=13, max=808, avg=402.08, stdev=94.08 lat (msec): min=21, max=842, avg=415.07, stdev=95.13 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 275], 10.00th=[ 300], 20.00th=[ 334], | 30.00th=[ 355], 40.00th=[ 376], 50.00th=[ 397], 60.00th=[ 418], | 70.00th=[ 439], 80.00th=[ 472], 90.00th=[ 514], 95.00th=[ 558], | 99.00th=[ 667], 99.50th=[ 726], 99.90th=[ 802], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 103, per=24.83%, avg=48.43, stdev=20.75, samples=202 iops : min= 1, max= 25, avg=11.68, stdev= 5.16, samples=202 write: IOPS=12, BW=51.5KiB/s (52.7kB/s)(5264KiB/102294msec); 0 zone resets slat (usec): min=29, max=11207, avg=225.87, stdev=664.81 clat (msec): min=90, max=1629, avg=849.97, stdev=222.65 lat (msec): min=90, max=1629, avg=850.20, stdev=222.65 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 531], 10.00th=[ 584], 20.00th=[ 667], | 30.00th=[ 726], 40.00th=[ 785], 50.00th=[ 835], 60.00th=[ 894], | 70.00th=[ 953], 80.00th=[ 1036], 90.00th=[ 1133], 95.00th=[ 1234], | 99.00th=[ 1385], 99.50th=[ 1435], 99.90th=[ 1569], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 7, max= 109, per=25.04%, avg=50.82, stdev=20.36, samples=203 iops : min= 1, max= 27, avg=12.28, stdev= 5.12, samples=203 lat (msec) : 20=0.08%, 50=0.16%, 100=0.31%, 250=0.86%, 500=42.42% lat (msec) : 750=22.03%, 1000=21.95%, 2000=12.19% cpu : usr=0.09%, sys=0.59%, ctx=4533, 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=145524: Sat Sep 5 12:24:59 2026 read: IOPS=12, BW=48.7KiB/s (49.8kB/s)(4984KiB/102437msec) slat (usec): min=2674, max=61620, avg=12828.20, stdev=7064.31 clat (msec): min=12, max=808, avg=400.63, stdev=98.52 lat (msec): min=16, max=818, avg=413.47, stdev=99.16 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 266], 10.00th=[ 288], 20.00th=[ 330], | 30.00th=[ 351], 40.00th=[ 372], 50.00th=[ 393], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 477], 90.00th=[ 531], 95.00th=[ 558], | 99.00th=[ 676], 99.50th=[ 693], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 112, per=24.79%, avg=48.34, stdev=21.07, samples=203 iops : min= 1, max= 28, avg=11.66, stdev= 5.27, samples=203 write: IOPS=12, BW=51.3KiB/s (52.5kB/s)(5256KiB/102437msec); 0 zone resets slat (usec): min=33, max=14953, avg=258.98, stdev=834.77 clat (msec): min=44, max=1467, avg=852.35, stdev=213.55 lat (msec): min=45, max=1467, avg=852.61, stdev=213.54 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 542], 10.00th=[ 592], 20.00th=[ 659], | 30.00th=[ 726], 40.00th=[ 793], 50.00th=[ 835], 60.00th=[ 902], | 70.00th=[ 953], 80.00th=[ 1036], 90.00th=[ 1133], 95.00th=[ 1234], | 99.00th=[ 1368], 99.50th=[ 1401], 99.90th=[ 1452], 99.95th=[ 1469], | 99.99th=[ 1469] bw ( KiB/s): min= 7, max= 103, per=24.83%, avg=50.41, stdev=19.54, samples=203 iops : min= 1, max= 25, avg=12.18, stdev= 4.87, samples=203 lat (msec) : 20=0.16%, 50=0.16%, 100=0.23%, 250=0.94%, 500=40.98% lat (msec) : 750=23.55%, 1000=21.56%, 2000=12.42% cpu : usr=0.08%, sys=0.60%, ctx=5068, 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=145525: Sat Sep 5 12:24:59 2026 read: IOPS=12, BW=49.5KiB/s (50.7kB/s)(5060KiB/102164msec) slat (usec): min=2277, max=45644, avg=12816.26, stdev=6728.22 clat (msec): min=19, max=1310, avg=397.92, stdev=98.89 lat (msec): min=26, max=1326, avg=410.74, stdev=99.57 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 266], 10.00th=[ 288], 20.00th=[ 330], | 30.00th=[ 355], 40.00th=[ 372], 50.00th=[ 397], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 464], 90.00th=[ 510], 95.00th=[ 542], | 99.00th=[ 617], 99.50th=[ 735], 99.90th=[ 1099], 99.95th=[ 1318], | 99.99th=[ 1318] bw ( KiB/s): min= 7, max= 112, per=25.30%, avg=49.33, stdev=21.56, samples=202 iops : min= 1, max= 28, avg=11.91, stdev= 5.41, samples=202 write: IOPS=12, BW=50.7KiB/s (51.9kB/s)(5180KiB/102164msec); 0 zone resets slat (usec): min=33, max=9016, avg=209.06, stdev=548.74 clat (msec): min=305, max=1809, avg=857.86, stdev=217.70 lat (msec): min=305, max=1809, avg=858.07, stdev=217.70 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 550], 10.00th=[ 592], 20.00th=[ 667], | 30.00th=[ 726], 40.00th=[ 793], 50.00th=[ 835], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 1036], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1385], 99.50th=[ 1653], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 112, per=24.74%, avg=50.22, stdev=18.48, samples=202 iops : min= 1, max= 28, avg=12.13, stdev= 4.60, samples=202 lat (msec) : 20=0.04%, 50=0.23%, 100=0.12%, 250=0.98%, 500=43.55% lat (msec) : 750=20.82%, 1000=21.60%, 2000=12.66% cpu : usr=0.10%, sys=0.58%, ctx=5105, 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=196KiB/s (201kB/s), 48.6KiB/s-49.5KiB/s (49.8kB/s-50.7kB/s), io=19.6MiB (20.5MB), run=102164-102437msec WRITE: bw=204KiB/s (209kB/s), 50.7KiB/s-51.5KiB/s (51.9kB/s-52.7kB/s), io=20.4MiB (21.4MB), run=102164-102437msec 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=145543: Sat Sep 5 12:25:08 2026 read: IOPS=1, BW=72.2MiB/s (75.7MB/s)(40.0MiB/554msec) slat (nsec): min=23349k, max=23349k, avg=23349198.00, stdev= 0.00 clat (nsec): min=506018k, max=506018k, avg=506018164.00, stdev= 0.00 lat (nsec): min=529372k, max=529372k, avg=529371941.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 506], 5.00th=[ 506], 10.00th=[ 506], 20.00th=[ 506], | 30.00th=[ 506], 40.00th=[ 506], 50.00th=[ 506], 60.00th=[ 506], | 70.00th=[ 506], 80.00th=[ 506], 90.00th=[ 506], 95.00th=[ 506], | 99.00th=[ 506], 99.50th=[ 506], 99.90th=[ 506], 99.95th=[ 506], | 99.99th=[ 506] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=2.17%, ctx=5, majf=0, minf=8 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=72.2MiB/s (75.7MB/s), 72.2MiB/s-72.2MiB/s (75.7MB/s-75.7MB/s), io=40.0MiB (41.9MB), run=554-554msec 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