== sanity test 398c: run fio to test AIO ================= 03:01:47 (1776927707) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.469533 s, 89.3 MB/s osc.lustre-OST0000-osc-ffff9041f0f3f800.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=147008: Thu Apr 23 03:04:41 2026 write: IOPS=15, BW=62.5KiB/s (63.0kB/s)(10.0MiB/163873msec); 0 zone resets slat (usec): min=85, max=20705, avg=604.14, stdev=787.53 clat (msec): min=166, max=1806, avg=1022.89, stdev=259.22 lat (msec): min=166, max=1808, avg=1023.50, stdev=259.26 clat percentiles (msec): | 1.00th=[ 271], 5.00th=[ 600], 10.00th=[ 701], 20.00th=[ 818], | 30.00th=[ 902], 40.00th=[ 961], 50.00th=[ 1028], 60.00th=[ 1083], | 70.00th=[ 1150], 80.00th=[ 1234], 90.00th=[ 1351], 95.00th=[ 1469], | 99.00th=[ 1620], 99.50th=[ 1653], 99.90th=[ 1754], 99.95th=[ 1770], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 169, per=24.76%, avg=61.65, stdev=24.53, samples=326 iops : min= 1, max= 42, avg=14.87, stdev= 6.16, samples=326 lat (msec) : 250=0.31%, 500=2.11%, 750=10.98%, 1000=32.85%, 2000=53.75% cpu : usr=0.06%, sys=0.58%, ctx=3074, 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=147009: Thu Apr 23 03:04:41 2026 write: IOPS=15, BW=62.5KiB/s (63.0kB/s)(10.0MiB/163959msec); 0 zone resets slat (usec): min=89, max=8486, avg=557.80, stdev=633.47 clat (msec): min=164, max=1754, avg=1023.23, stdev=258.30 lat (msec): min=165, max=1754, avg=1023.80, stdev=258.34 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 609], 10.00th=[ 701], 20.00th=[ 827], | 30.00th=[ 911], 40.00th=[ 969], 50.00th=[ 1028], 60.00th=[ 1083], | 70.00th=[ 1150], 80.00th=[ 1234], 90.00th=[ 1351], 95.00th=[ 1452], | 99.00th=[ 1636], 99.50th=[ 1670], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 198, per=24.75%, avg=61.63, stdev=27.39, samples=326 iops : min= 1, max= 49, avg=14.87, stdev= 6.89, samples=326 lat (msec) : 250=1.09%, 500=1.72%, 750=10.47%, 1000=32.66%, 2000=54.06% cpu : usr=0.07%, sys=0.57%, ctx=2995, 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=147010: Thu Apr 23 03:04:41 2026 write: IOPS=15, BW=62.5KiB/s (64.0kB/s)(10.0MiB/163767msec); 0 zone resets slat (usec): min=70, max=10384, avg=556.73, stdev=620.13 clat (msec): min=97, max=2091, avg=1022.46, stdev=266.21 lat (msec): min=98, max=2092, avg=1023.03, stdev=266.24 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 609], 10.00th=[ 709], 20.00th=[ 818], | 30.00th=[ 894], 40.00th=[ 953], 50.00th=[ 1020], 60.00th=[ 1083], | 70.00th=[ 1150], 80.00th=[ 1234], 90.00th=[ 1368], 95.00th=[ 1469], | 99.00th=[ 1653], 99.50th=[ 1703], 99.90th=[ 2022], 99.95th=[ 2022], | 99.99th=[ 2089] bw ( KiB/s): min= 7, max= 233, per=24.83%, avg=61.82, stdev=27.31, samples=325 iops : min= 1, max= 58, avg=14.91, stdev= 6.85, samples=325 lat (msec) : 100=0.08%, 250=0.90%, 500=1.99%, 750=10.39%, 1000=33.55% lat (msec) : 2000=52.97%, >=2000=0.12% cpu : usr=0.07%, sys=0.56%, ctx=2985, 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=147011: Thu Apr 23 03:04:41 2026 write: IOPS=15, BW=62.5KiB/s (63.0kB/s)(10.0MiB/163958msec); 0 zone resets slat (usec): min=70, max=8426, avg=577.07, stdev=627.61 clat (msec): min=77, max=1807, avg=1023.37, stdev=258.00 lat (msec): min=77, max=1808, avg=1023.96, stdev=258.01 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 609], 10.00th=[ 693], 20.00th=[ 818], | 30.00th=[ 902], 40.00th=[ 961], 50.00th=[ 1020], 60.00th=[ 1083], | 70.00th=[ 1150], 80.00th=[ 1234], 90.00th=[ 1351], 95.00th=[ 1452], | 99.00th=[ 1603], 99.50th=[ 1653], 99.90th=[ 1720], 99.95th=[ 1720], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 170, per=24.76%, avg=61.65, stdev=26.97, samples=326 iops : min= 1, max= 42, avg=14.87, stdev= 6.77, samples=326 lat (msec) : 100=0.04%, 250=0.43%, 500=2.03%, 750=10.70%, 1000=32.97% lat (msec) : 2000=53.83% cpu : usr=0.07%, sys=0.59%, ctx=3046, 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=250KiB/s (256kB/s), 62.5KiB/s-62.5KiB/s (63.0kB/s-64.0kB/s), io=40.0MiB (41.9MB), run=163767-163959msec 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=147044: Thu Apr 23 03:06:44 2026 read: IOPS=10, BW=43.3KiB/s (44.3kB/s)(5048KiB/116655msec) slat (usec): min=3945, max=54813, avg=13102.06, stdev=5095.35 clat (msec): min=56, max=1120, avg=458.41, stdev=119.28 lat (msec): min=60, max=1136, avg=471.53, stdev=120.30 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 288], 10.00th=[ 321], 20.00th=[ 363], | 30.00th=[ 388], 40.00th=[ 422], 50.00th=[ 456], 60.00th=[ 485], | 70.00th=[ 514], 80.00th=[ 550], 90.00th=[ 600], 95.00th=[ 659], | 99.00th=[ 785], 99.50th=[ 810], 99.90th=[ 1020], 99.95th=[ 1116], | 99.99th=[ 1116] bw ( KiB/s): min= 7, max= 119, per=24.91%, avg=42.84, stdev=19.52, samples=230 iops : min= 1, max= 29, avg=10.14, stdev= 4.91, samples=230 write: IOPS=11, BW=44.5KiB/s (45.6kB/s)(5192KiB/116655msec); 0 zone resets slat (usec): min=97, max=6786, avg=598.84, stdev=656.95 clat (msec): min=390, max=2159, avg=976.42, stdev=261.95 lat (msec): min=391, max=2160, avg=977.02, stdev=261.95 clat percentiles (msec): | 1.00th=[ 485], 5.00th=[ 600], 10.00th=[ 676], 20.00th=[ 760], | 30.00th=[ 827], 40.00th=[ 885], 50.00th=[ 944], 60.00th=[ 1003], | 70.00th=[ 1083], 80.00th=[ 1183], 90.00th=[ 1318], 95.00th=[ 1452], | 99.00th=[ 1720], 99.50th=[ 1804], 99.90th=[ 1921], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 112, per=24.55%, avg=43.94, stdev=20.42, samples=231 iops : min= 1, max= 28, avg=10.41, stdev= 5.14, samples=231 lat (msec) : 100=0.23%, 250=0.78%, 500=32.46%, 750=24.80%, 1000=21.09% lat (msec) : 2000=20.59%, >=2000=0.04% cpu : usr=0.11%, sys=1.03%, ctx=5309, 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=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=147045: Thu Apr 23 03:06:44 2026 read: IOPS=10, BW=42.7KiB/s (43.7kB/s)(4976KiB/116662msec) slat (usec): min=2951, max=38998, avg=13046.80, stdev=5116.05 clat (msec): min=22, max=981, avg=457.55, stdev=115.53 lat (msec): min=28, max=1000, avg=470.61, stdev=116.64 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 284], 10.00th=[ 317], 20.00th=[ 363], | 30.00th=[ 397], 40.00th=[ 426], 50.00th=[ 456], 60.00th=[ 481], | 70.00th=[ 510], 80.00th=[ 542], 90.00th=[ 600], 95.00th=[ 659], | 99.00th=[ 768], 99.50th=[ 802], 99.90th=[ 961], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 96, per=24.42%, avg=42.00, stdev=20.70, samples=231 iops : min= 1, max= 24, avg= 9.93, stdev= 5.21, samples=231 write: IOPS=11, BW=45.1KiB/s (46.2kB/s)(5264KiB/116662msec); 0 zone resets slat (usec): min=101, max=9770, avg=634.26, stdev=789.80 clat (msec): min=386, max=2105, avg=971.01, stdev=265.29 lat (msec): min=386, max=2105, avg=971.65, stdev=265.32 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 609], 10.00th=[ 676], 20.00th=[ 760], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 936], 60.00th=[ 1003], | 70.00th=[ 1083], 80.00th=[ 1183], 90.00th=[ 1334], 95.00th=[ 1452], | 99.00th=[ 1720], 99.50th=[ 1888], 99.90th=[ 2005], 99.95th=[ 2106], | 99.99th=[ 2106] bw ( KiB/s): min= 7, max= 103, per=24.90%, avg=44.58, stdev=19.27, samples=231 iops : min= 1, max= 25, avg=10.57, stdev= 4.86, samples=231 lat (msec) : 50=0.16%, 100=0.16%, 250=0.70%, 500=32.34%, 750=24.34% lat (msec) : 1000=21.64%, 2000=20.59%, >=2000=0.08% cpu : usr=0.11%, sys=1.03%, ctx=5302, 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=147046: Thu Apr 23 03:06:44 2026 read: IOPS=10, BW=42.8KiB/s (43.8kB/s)(4984KiB/116545msec) slat (usec): min=3715, max=48271, avg=13195.97, stdev=5330.41 clat (msec): min=18, max=1288, avg=460.27, stdev=120.82 lat (msec): min=27, max=1306, avg=473.48, stdev=122.19 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 288], 10.00th=[ 317], 20.00th=[ 359], | 30.00th=[ 397], 40.00th=[ 430], 50.00th=[ 460], 60.00th=[ 485], | 70.00th=[ 514], 80.00th=[ 558], 90.00th=[ 609], 95.00th=[ 651], | 99.00th=[ 751], 99.50th=[ 810], 99.90th=[ 1250], 99.95th=[ 1284], | 99.99th=[ 1284] bw ( KiB/s): min= 7, max= 119, per=24.80%, avg=42.66, stdev=20.16, samples=229 iops : min= 1, max= 29, avg=10.09, stdev= 5.06, samples=229 write: IOPS=11, BW=45.1KiB/s (46.2kB/s)(5256KiB/116545msec); 0 zone resets slat (usec): min=99, max=15795, avg=626.66, stdev=841.04 clat (msec): min=338, max=2128, avg=967.27, stdev=254.05 lat (msec): min=338, max=2128, avg=967.90, stdev=254.05 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 600], 10.00th=[ 693], 20.00th=[ 751], | 30.00th=[ 818], 40.00th=[ 885], 50.00th=[ 944], 60.00th=[ 1003], | 70.00th=[ 1083], 80.00th=[ 1167], 90.00th=[ 1301], 95.00th=[ 1435], | 99.00th=[ 1670], 99.50th=[ 1871], 99.90th=[ 2106], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 7, max= 111, per=24.98%, avg=44.71, stdev=18.96, samples=229 iops : min= 1, max= 27, avg=10.61, stdev= 4.76, samples=229 lat (msec) : 20=0.04%, 100=0.31%, 250=0.70%, 500=31.21%, 750=25.70% lat (msec) : 1000=21.09%, 2000=20.82%, >=2000=0.12% cpu : usr=0.10%, sys=1.06%, ctx=5245, 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=147047: Thu Apr 23 03:06:44 2026 read: IOPS=10, BW=43.5KiB/s (44.6kB/s)(5060KiB/116272msec) slat (usec): min=142, max=35769, avg=12855.27, stdev=5146.75 clat (msec): min=17, max=1400, avg=462.94, stdev=130.38 lat (msec): min=28, max=1418, avg=475.81, stdev=131.69 clat percentiles (msec): | 1.00th=[ 203], 5.00th=[ 288], 10.00th=[ 321], 20.00th=[ 368], | 30.00th=[ 397], 40.00th=[ 426], 50.00th=[ 456], 60.00th=[ 485], | 70.00th=[ 518], 80.00th=[ 550], 90.00th=[ 617], 95.00th=[ 667], | 99.00th=[ 802], 99.50th=[ 986], 99.90th=[ 1385], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 7, max= 111, per=25.17%, avg=43.29, stdev=20.01, samples=228 iops : min= 1, max= 27, avg=10.25, stdev= 5.03, samples=228 write: IOPS=11, BW=44.5KiB/s (45.6kB/s)(5180KiB/116272msec); 0 zone resets slat (usec): min=65, max=6248, avg=582.13, stdev=622.35 clat (msec): min=128, max=1907, avg=970.25, stdev=267.34 lat (msec): min=129, max=1907, avg=970.84, stdev=267.37 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 584], 10.00th=[ 684], 20.00th=[ 751], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 944], 60.00th=[ 1011], | 70.00th=[ 1099], 80.00th=[ 1183], 90.00th=[ 1334], 95.00th=[ 1435], | 99.00th=[ 1720], 99.50th=[ 1804], 99.90th=[ 1888], 99.95th=[ 1905], | 99.99th=[ 1905] bw ( KiB/s): min= 7, max= 88, per=24.69%, avg=44.19, stdev=18.46, samples=229 iops : min= 1, max= 22, avg=10.48, stdev= 4.68, samples=229 lat (msec) : 20=0.08%, 50=0.12%, 100=0.12%, 250=0.98%, 500=31.84% lat (msec) : 750=24.96%, 1000=21.21%, 2000=20.70% cpu : usr=0.09%, sys=1.01%, ctx=5263, 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=172KiB/s (176kB/s), 42.7KiB/s-43.5KiB/s (43.7kB/s-44.6kB/s), io=19.6MiB (20.5MB), run=116272-116662msec WRITE: bw=179KiB/s (183kB/s), 44.5KiB/s-45.1KiB/s (45.6kB/s-46.2kB/s), io=20.4MiB (21.4MB), run=116272-116662msec 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=147067: Thu Apr 23 03:06:59 2026 read: IOPS=2, BW=95.9MiB/s (101MB/s)(40.0MiB/417msec) slat (nsec): min=45744k, max=45744k, avg=45744113.00, stdev= 0.00 clat (nsec): min=346652k, max=346652k, avg=346652372.00, stdev= 0.00 lat (nsec): min=392404k, max=392404k, avg=392403593.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 347], 5.00th=[ 347], 10.00th=[ 347], 20.00th=[ 347], | 30.00th=[ 347], 40.00th=[ 347], 50.00th=[ 347], 60.00th=[ 347], | 70.00th=[ 347], 80.00th=[ 347], 90.00th=[ 347], 95.00th=[ 347], | 99.00th=[ 347], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=7.21%, ctx=40, 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=95.9MiB/s (101MB/s), 95.9MiB/s-95.9MiB/s (101MB/s-101MB/s), io=40.0MiB (41.9MB), run=417-417msec