== sanity test 398c: run fio to test AIO ================= 00:52:11 (1786423931) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.769818 s, 54.5 MB/s osc.lustre-OST0000-osc-ffff952b757e9000.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=143705: Tue Aug 11 00:55:43 2026 write: IOPS=12, BW=50.7KiB/s (51.9kB/s)(10.0MiB/202067msec); 0 zone resets slat (usec): min=51, max=22560, avg=581.13, stdev=1241.46 clat (msec): min=224, max=2038, avg=1260.87, stdev=288.29 lat (msec): min=225, max=2038, avg=1261.45, stdev=288.24 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 802], 10.00th=[ 927], 20.00th=[ 1053], | 30.00th=[ 1150], 40.00th=[ 1217], 50.00th=[ 1267], 60.00th=[ 1334], | 70.00th=[ 1401], 80.00th=[ 1485], 90.00th=[ 1603], 95.00th=[ 1703], | 99.00th=[ 1854], 99.50th=[ 1905], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 143, per=25.21%, avg=50.92, stdev=25.22, samples=395 iops : min= 1, max= 35, avg=12.31, stdev= 6.31, samples=395 lat (msec) : 250=0.62%, 500=1.99%, 750=1.48%, 1000=10.59%, 2000=85.16% lat (msec) : >=2000=0.16% cpu : usr=0.07%, sys=0.38%, ctx=2190, 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=143706: Tue Aug 11 00:55:43 2026 write: IOPS=12, BW=50.7KiB/s (51.9kB/s)(10.0MiB/202162msec); 0 zone resets slat (usec): min=51, max=17043, avg=619.20, stdev=1190.77 clat (msec): min=236, max=2037, avg=1261.52, stdev=290.07 lat (msec): min=236, max=2038, avg=1262.15, stdev=290.08 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 802], 10.00th=[ 927], 20.00th=[ 1062], | 30.00th=[ 1150], 40.00th=[ 1217], 50.00th=[ 1284], 60.00th=[ 1334], | 70.00th=[ 1401], 80.00th=[ 1469], 90.00th=[ 1620], 95.00th=[ 1737], | 99.00th=[ 1871], 99.50th=[ 1938], 99.90th=[ 1989], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 135, per=25.02%, avg=50.54, stdev=22.94, samples=398 iops : min= 1, max= 33, avg=12.22, stdev= 5.76, samples=398 lat (msec) : 250=0.62%, 500=2.03%, 750=1.76%, 1000=10.08%, 2000=85.43% lat (msec) : >=2000=0.08% cpu : usr=0.08%, sys=0.39%, ctx=2559, 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=143707: Tue Aug 11 00:55:43 2026 write: IOPS=12, BW=50.7KiB/s (51.9kB/s)(10.0MiB/202148msec); 0 zone resets slat (usec): min=50, max=19017, avg=629.11, stdev=1205.49 clat (msec): min=214, max=2033, avg=1261.38, stdev=289.62 lat (msec): min=214, max=2033, avg=1262.02, stdev=289.60 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 802], 10.00th=[ 927], 20.00th=[ 1045], | 30.00th=[ 1133], 40.00th=[ 1217], 50.00th=[ 1284], 60.00th=[ 1334], | 70.00th=[ 1401], 80.00th=[ 1485], 90.00th=[ 1620], 95.00th=[ 1737], | 99.00th=[ 1838], 99.50th=[ 1888], 99.90th=[ 2005], 99.95th=[ 2022], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 128, per=25.15%, avg=50.80, stdev=23.61, samples=396 iops : min= 1, max= 32, avg=12.29, stdev= 5.92, samples=396 lat (msec) : 250=0.62%, 500=1.91%, 750=1.48%, 1000=10.43%, 2000=85.43% lat (msec) : >=2000=0.12% cpu : usr=0.06%, sys=0.39%, ctx=2614, 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=143708: Tue Aug 11 00:55:43 2026 write: IOPS=12, BW=50.7KiB/s (51.9kB/s)(10.0MiB/201983msec); 0 zone resets slat (usec): min=51, max=12860, avg=630.66, stdev=1233.31 clat (msec): min=146, max=2027, avg=1261.09, stdev=300.28 lat (msec): min=147, max=2027, avg=1261.73, stdev=300.25 clat percentiles (msec): | 1.00th=[ 326], 5.00th=[ 760], 10.00th=[ 911], 20.00th=[ 1053], | 30.00th=[ 1150], 40.00th=[ 1217], 50.00th=[ 1284], 60.00th=[ 1334], | 70.00th=[ 1418], 80.00th=[ 1485], 90.00th=[ 1620], 95.00th=[ 1737], | 99.00th=[ 1888], 99.50th=[ 1938], 99.90th=[ 1972], 99.95th=[ 1989], | 99.99th=[ 2022] bw ( KiB/s): min= 7, max= 191, per=25.16%, avg=50.82, stdev=23.36, samples=396 iops : min= 1, max= 47, avg=12.29, stdev= 5.83, samples=396 lat (msec) : 250=0.47%, 500=2.34%, 750=1.99%, 1000=10.62%, 2000=84.53% lat (msec) : >=2000=0.04% cpu : usr=0.07%, sys=0.37%, ctx=2541, 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=203KiB/s (207kB/s), 50.7KiB/s-50.7KiB/s (51.9kB/s-51.9kB/s), io=40.0MiB (41.9MB), run=201983-202162msec 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=143747: Tue Aug 11 00:57:59 2026 read: IOPS=9, BW=39.9KiB/s (40.8kB/s)(5048KiB/126594msec) slat (usec): min=4126, max=61356, avg=18435.00, stdev=8860.50 clat (msec): min=64, max=1089, avg=494.81, stdev=113.34 lat (msec): min=75, max=1116, avg=513.27, stdev=115.38 clat percentiles (msec): | 1.00th=[ 275], 5.00th=[ 321], 10.00th=[ 363], 20.00th=[ 409], | 30.00th=[ 435], 40.00th=[ 456], 50.00th=[ 485], 60.00th=[ 510], | 70.00th=[ 550], 80.00th=[ 584], 90.00th=[ 642], 95.00th=[ 684], | 99.00th=[ 768], 99.50th=[ 835], 99.90th=[ 1083], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 95, per=24.98%, avg=39.47, stdev=18.71, samples=250 iops : min= 1, max= 23, avg= 9.34, stdev= 4.70, samples=250 write: IOPS=10, BW=41.0KiB/s (41.0kB/s)(5192KiB/126594msec); 0 zone resets slat (usec): min=53, max=21501, avg=751.53, stdev=1363.75 clat (msec): min=418, max=1638, avg=1055.50, stdev=245.39 lat (msec): min=418, max=1638, avg=1056.26, stdev=245.40 clat percentiles (msec): | 1.00th=[ 531], 5.00th=[ 625], 10.00th=[ 726], 20.00th=[ 835], | 30.00th=[ 919], 40.00th=[ 995], 50.00th=[ 1062], 60.00th=[ 1116], | 70.00th=[ 1183], 80.00th=[ 1250], 90.00th=[ 1385], 95.00th=[ 1469], | 99.00th=[ 1586], 99.50th=[ 1620], 99.90th=[ 1636], 99.95th=[ 1636], | 99.99th=[ 1636] bw ( KiB/s): min= 7, max= 96, per=24.81%, avg=40.69, stdev=18.96, samples=249 iops : min= 1, max= 24, avg= 9.65, stdev= 4.79, samples=249 lat (msec) : 100=0.16%, 250=0.27%, 500=26.84%, 750=27.15%, 1000=15.16% lat (msec) : 2000=30.43% cpu : usr=0.13%, sys=1.05%, ctx=5132, 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=143748: Tue Aug 11 00:57:59 2026 read: IOPS=9, BW=39.3KiB/s (40.2kB/s)(4976KiB/126695msec) slat (usec): min=4195, max=64660, avg=18520.10, stdev=8590.27 clat (msec): min=35, max=1074, avg=491.48, stdev=119.38 lat (msec): min=55, max=1105, avg=510.02, stdev=121.18 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 338], 10.00th=[ 368], 20.00th=[ 401], | 30.00th=[ 426], 40.00th=[ 451], 50.00th=[ 477], 60.00th=[ 506], | 70.00th=[ 542], 80.00th=[ 584], 90.00th=[ 642], 95.00th=[ 693], | 99.00th=[ 810], 99.50th=[ 911], 99.90th=[ 1070], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 103, per=24.80%, avg=39.18, stdev=20.07, samples=247 iops : min= 1, max= 25, avg= 9.28, stdev= 5.07, samples=247 write: IOPS=10, BW=41.5KiB/s (42.5kB/s)(5264KiB/126695msec); 0 zone resets slat (usec): min=57, max=11687, avg=758.42, stdev=1261.96 clat (msec): min=219, max=1733, avg=1052.94, stdev=240.99 lat (msec): min=224, max=1735, avg=1053.71, stdev=241.04 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 651], 10.00th=[ 735], 20.00th=[ 852], | 30.00th=[ 927], 40.00th=[ 995], 50.00th=[ 1053], 60.00th=[ 1116], | 70.00th=[ 1167], 80.00th=[ 1250], 90.00th=[ 1385], 95.00th=[ 1469], | 99.00th=[ 1586], 99.50th=[ 1620], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 7, max= 111, per=24.99%, avg=40.98, stdev=17.84, samples=250 iops : min= 1, max= 27, avg= 9.73, stdev= 4.48, samples=250 lat (msec) : 50=0.08%, 100=0.27%, 250=0.12%, 500=28.24%, 750=24.65% lat (msec) : 1000=16.64%, 2000=30.00% cpu : usr=0.13%, sys=0.98%, ctx=5181, 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=143749: Tue Aug 11 00:57:59 2026 read: IOPS=9, BW=39.4KiB/s (40.4kB/s)(4984KiB/126341msec) slat (usec): min=112, max=71329, avg=18431.60, stdev=8869.02 clat (msec): min=25, max=1233, avg=489.40, stdev=119.74 lat (msec): min=36, max=1246, avg=507.85, stdev=121.81 clat percentiles (msec): | 1.00th=[ 161], 5.00th=[ 326], 10.00th=[ 359], 20.00th=[ 397], | 30.00th=[ 426], 40.00th=[ 456], 50.00th=[ 481], 60.00th=[ 510], | 70.00th=[ 542], 80.00th=[ 575], 90.00th=[ 634], 95.00th=[ 684], | 99.00th=[ 802], 99.50th=[ 911], 99.90th=[ 1070], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7, max= 119, per=25.02%, avg=39.53, stdev=19.16, samples=247 iops : min= 1, max= 29, avg= 9.36, stdev= 4.82, samples=247 write: IOPS=10, BW=41.6KiB/s (42.6kB/s)(5256KiB/126341msec); 0 zone resets slat (usec): min=56, max=13421, avg=785.72, stdev=1416.66 clat (msec): min=205, max=1795, avg=1054.64, stdev=247.34 lat (msec): min=210, max=1795, avg=1055.44, stdev=247.45 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 651], 10.00th=[ 735], 20.00th=[ 844], | 30.00th=[ 919], 40.00th=[ 995], 50.00th=[ 1053], 60.00th=[ 1116], | 70.00th=[ 1183], 80.00th=[ 1267], 90.00th=[ 1401], 95.00th=[ 1469], | 99.00th=[ 1586], 99.50th=[ 1603], 99.90th=[ 1653], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 88, per=25.23%, avg=41.38, stdev=17.95, samples=247 iops : min= 1, max= 22, avg= 9.81, stdev= 4.54, samples=247 lat (msec) : 50=0.08%, 100=0.27%, 250=0.23%, 500=27.34%, 750=25.31% lat (msec) : 1000=16.05%, 2000=30.70% cpu : usr=0.12%, sys=1.01%, ctx=5268, 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=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=143750: Tue Aug 11 00:57:59 2026 read: IOPS=10, BW=40.0KiB/s (40.0kB/s)(5060KiB/126429msec) slat (usec): min=4290, max=60532, avg=18561.66, stdev=9113.22 clat (msec): min=18, max=1150, avg=495.03, stdev=117.25 lat (msec): min=31, max=1170, avg=513.60, stdev=119.40 clat percentiles (msec): | 1.00th=[ 279], 5.00th=[ 330], 10.00th=[ 363], 20.00th=[ 405], | 30.00th=[ 435], 40.00th=[ 460], 50.00th=[ 485], 60.00th=[ 514], | 70.00th=[ 542], 80.00th=[ 584], 90.00th=[ 642], 95.00th=[ 684], | 99.00th=[ 818], 99.50th=[ 894], 99.90th=[ 1070], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 108, per=25.49%, avg=40.28, stdev=18.30, samples=246 iops : min= 1, max= 27, avg= 9.54, stdev= 4.63, samples=246 write: IOPS=10, BW=40.0KiB/s (41.0kB/s)(5180KiB/126429msec); 0 zone resets slat (usec): min=55, max=13685, avg=767.60, stdev=1274.85 clat (msec): min=399, max=1813, avg=1054.40, stdev=245.34 lat (msec): min=400, max=1813, avg=1055.17, stdev=245.39 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 651], 10.00th=[ 718], 20.00th=[ 852], | 30.00th=[ 936], 40.00th=[ 995], 50.00th=[ 1045], 60.00th=[ 1099], | 70.00th=[ 1167], 80.00th=[ 1250], 90.00th=[ 1401], 95.00th=[ 1502], | 99.00th=[ 1603], 99.50th=[ 1653], 99.90th=[ 1754], 99.95th=[ 1821], | 99.99th=[ 1821] bw ( KiB/s): min= 7, max= 102, per=24.80%, avg=40.67, stdev=18.78, samples=248 iops : min= 1, max= 25, avg= 9.65, stdev= 4.71, samples=248 lat (msec) : 20=0.04%, 50=0.08%, 100=0.08%, 250=0.16%, 500=27.38% lat (msec) : 750=26.45%, 1000=16.13%, 2000=29.69% cpu : usr=0.13%, sys=1.03%, ctx=5262, 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=158KiB/s (162kB/s), 39.3KiB/s-40.0KiB/s (40.2kB/s-40.0kB/s), io=19.6MiB (20.5MB), run=126341-126695msec WRITE: bw=165KiB/s (169kB/s), 40.0KiB/s-41.6KiB/s (41.0kB/s-42.6kB/s), io=20.4MiB (21.4MB), run=126341-126695msec 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=143775: Tue Aug 11 00:58:10 2026 read: IOPS=1, BW=69.7MiB/s (73.1MB/s)(40.0MiB/574msec) slat (nsec): min=42631k, max=42631k, avg=42631479.00, stdev= 0.00 clat (nsec): min=508154k, max=508154k, avg=508153804.00, stdev= 0.00 lat (nsec): min=550791k, max=550791k, avg=550790582.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 510], 10.00th=[ 510], 20.00th=[ 510], | 30.00th=[ 510], 40.00th=[ 510], 50.00th=[ 510], 60.00th=[ 510], | 70.00th=[ 510], 80.00th=[ 510], 90.00th=[ 510], 95.00th=[ 510], | 99.00th=[ 510], 99.50th=[ 510], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 510] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=2.09%, ctx=4, 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=69.7MiB/s (73.1MB/s), 69.7MiB/s-69.7MiB/s (73.1MB/s-73.1MB/s), io=40.0MiB (41.9MB), run=574-574msec 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