== sanity test 398c: run fio to test AIO ================= 09:45:53 (1788183953) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.516079 s, 81.3 MB/s osc.lustre-OST0000-osc-ffff968652982000.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=145235: Mon Aug 31 09:48:58 2026 write: IOPS=14, BW=59.5KiB/s (60.9kB/s)(10.0MiB/172130msec); 0 zone resets slat (usec): min=50, max=14482, avg=279.53, stdev=815.66 clat (msec): min=226, max=2133, avg=1075.09, stdev=263.33 lat (msec): min=227, max=2133, avg=1075.37, stdev=263.33 clat percentiles (msec): | 1.00th=[ 575], 5.00th=[ 684], 10.00th=[ 776], 20.00th=[ 869], | 30.00th=[ 936], 40.00th=[ 986], 50.00th=[ 1045], 60.00th=[ 1099], | 70.00th=[ 1167], 80.00th=[ 1267], 90.00th=[ 1435], 95.00th=[ 1552], | 99.00th=[ 1821], 99.50th=[ 1972], 99.90th=[ 2072], 99.95th=[ 2106], | 99.99th=[ 2140] bw ( KiB/s): min= 7, max= 135, per=25.43%, avg=60.26, stdev=28.32, samples=334 iops : min= 1, max= 33, avg=14.57, stdev= 7.10, samples=334 lat (msec) : 250=0.04%, 500=0.62%, 750=8.09%, 1000=34.02%, 2000=56.80% lat (msec) : >=2000=0.43% cpu : usr=0.03%, sys=0.27%, ctx=1832, 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=145236: Mon Aug 31 09:48:58 2026 write: IOPS=14, BW=59.3KiB/s (60.7kB/s)(10.0MiB/172633msec); 0 zone resets slat (usec): min=49, max=21038, avg=295.89, stdev=963.31 clat (msec): min=446, max=2117, avg=1077.34, stdev=265.78 lat (msec): min=446, max=2117, avg=1077.63, stdev=265.80 clat percentiles (msec): | 1.00th=[ 481], 5.00th=[ 693], 10.00th=[ 785], 20.00th=[ 860], | 30.00th=[ 936], 40.00th=[ 986], 50.00th=[ 1045], 60.00th=[ 1116], | 70.00th=[ 1183], 80.00th=[ 1284], 90.00th=[ 1435], 95.00th=[ 1569], | 99.00th=[ 1804], 99.50th=[ 1871], 99.90th=[ 2106], 99.95th=[ 2123], | 99.99th=[ 2123] bw ( KiB/s): min= 7, max= 128, per=25.97%, avg=61.56, stdev=29.38, samples=327 iops : min= 1, max= 32, avg=14.89, stdev= 7.37, samples=327 lat (msec) : 500=1.29%, 750=6.68%, 1000=33.59%, 2000=58.20%, >=2000=0.23% cpu : usr=0.04%, sys=0.25%, ctx=1802, 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=145237: Mon Aug 31 09:48:58 2026 write: IOPS=14, BW=59.3KiB/s (60.7kB/s)(10.0MiB/172631msec); 0 zone resets slat (usec): min=50, max=18979, avg=313.48, stdev=923.14 clat (msec): min=512, max=2105, avg=1076.74, stdev=258.42 lat (msec): min=512, max=2106, avg=1077.06, stdev=258.42 clat percentiles (msec): | 1.00th=[ 592], 5.00th=[ 709], 10.00th=[ 776], 20.00th=[ 860], | 30.00th=[ 927], 40.00th=[ 986], 50.00th=[ 1045], 60.00th=[ 1116], | 70.00th=[ 1167], 80.00th=[ 1267], 90.00th=[ 1435], 95.00th=[ 1552], | 99.00th=[ 1854], 99.50th=[ 2022], 99.90th=[ 2089], 99.95th=[ 2089], | 99.99th=[ 2106] bw ( KiB/s): min= 7, max= 128, per=25.58%, avg=60.64, stdev=25.57, samples=332 iops : min= 1, max= 32, avg=14.66, stdev= 6.41, samples=332 lat (msec) : 750=7.85%, 1000=34.34%, 2000=57.30%, >=2000=0.51% cpu : usr=0.05%, sys=0.27%, ctx=2092, 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=145238: Mon Aug 31 09:48:58 2026 write: IOPS=14, BW=59.3KiB/s (60.8kB/s)(10.0MiB/172566msec); 0 zone resets slat (usec): min=48, max=22734, avg=305.49, stdev=1047.22 clat (msec): min=112, max=2128, avg=1076.36, stdev=267.28 lat (msec): min=112, max=2128, avg=1076.66, stdev=267.29 clat percentiles (msec): | 1.00th=[ 531], 5.00th=[ 701], 10.00th=[ 776], 20.00th=[ 860], | 30.00th=[ 927], 40.00th=[ 978], 50.00th=[ 1045], 60.00th=[ 1116], | 70.00th=[ 1183], 80.00th=[ 1267], 90.00th=[ 1435], 95.00th=[ 1569], | 99.00th=[ 1838], 99.50th=[ 1921], 99.90th=[ 2106], 99.95th=[ 2106], | 99.99th=[ 2123] bw ( KiB/s): min= 7, max= 135, per=25.36%, avg=60.10, stdev=27.05, samples=335 iops : min= 1, max= 33, avg=14.53, stdev= 6.76, samples=335 lat (msec) : 250=0.08%, 500=0.51%, 750=7.81%, 1000=35.12%, 2000=56.09% lat (msec) : >=2000=0.39% cpu : usr=0.05%, sys=0.26%, ctx=1929, 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=237KiB/s (243kB/s), 59.3KiB/s-59.5KiB/s (60.7kB/s-60.9kB/s), io=40.0MiB (41.9MB), run=172130-172633msec 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=145272: Mon Aug 31 09:51:13 2026 read: IOPS=10, BW=40.3KiB/s (41.3kB/s)(5048KiB/125111msec) slat (usec): min=65, max=63965, avg=16562.09, stdev=9226.80 clat (msec): min=21, max=1386, avg=489.47, stdev=144.80 lat (msec): min=39, max=1403, avg=506.05, stdev=146.80 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 300], 10.00th=[ 347], 20.00th=[ 384], | 30.00th=[ 414], 40.00th=[ 439], 50.00th=[ 468], 60.00th=[ 502], | 70.00th=[ 542], 80.00th=[ 592], 90.00th=[ 676], 95.00th=[ 751], | 99.00th=[ 852], 99.50th=[ 978], 99.90th=[ 1284], 99.95th=[ 1385], | 99.99th=[ 1385] bw ( KiB/s): min= 7, max= 112, per=25.66%, avg=40.80, stdev=20.65, samples=242 iops : min= 1, max= 28, avg= 9.71, stdev= 5.22, samples=242 write: IOPS=10, BW=41.5KiB/s (42.5kB/s)(5192KiB/125111msec); 0 zone resets slat (usec): min=54, max=28824, avg=370.84, stdev=1164.88 clat (msec): min=123, max=2308, avg=1048.61, stdev=328.81 lat (msec): min=126, max=2308, avg=1048.98, stdev=328.94 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 531], 10.00th=[ 642], 20.00th=[ 785], | 30.00th=[ 877], 40.00th=[ 978], 50.00th=[ 1045], 60.00th=[ 1116], | 70.00th=[ 1200], 80.00th=[ 1301], 90.00th=[ 1435], 95.00th=[ 1586], | 99.00th=[ 2089], 99.50th=[ 2198], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 96, per=25.03%, avg=41.55, stdev=17.92, samples=244 iops : min= 1, max= 24, avg= 9.90, stdev= 4.50, samples=244 lat (msec) : 50=0.04%, 100=0.31%, 250=0.90%, 500=30.55%, 750=24.10% lat (msec) : 1000=15.00%, 2000=28.52%, >=2000=0.59% cpu : usr=0.08%, sys=0.59%, ctx=4152, 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=145273: Mon Aug 31 09:51:13 2026 read: IOPS=9, BW=39.6KiB/s (40.6kB/s)(4976KiB/125555msec) slat (usec): min=2764, max=57589, avg=16674.51, stdev=8785.69 clat (msec): min=13, max=1242, avg=496.82, stdev=137.05 lat (msec): min=27, max=1255, avg=513.50, stdev=138.66 clat percentiles (msec): | 1.00th=[ 255], 5.00th=[ 313], 10.00th=[ 347], 20.00th=[ 380], | 30.00th=[ 418], 40.00th=[ 443], 50.00th=[ 477], 60.00th=[ 514], | 70.00th=[ 558], 80.00th=[ 609], 90.00th=[ 693], 95.00th=[ 751], | 99.00th=[ 835], 99.50th=[ 885], 99.90th=[ 1036], 99.95th=[ 1250], | 99.99th=[ 1250] bw ( KiB/s): min= 7, max= 96, per=25.09%, avg=39.89, stdev=19.11, samples=244 iops : min= 1, max= 24, avg= 9.49, stdev= 4.83, samples=244 write: IOPS=10, BW=41.9KiB/s (42.9kB/s)(5264KiB/125555msec); 0 zone resets slat (usec): min=53, max=21317, avg=369.75, stdev=1169.93 clat (msec): min=330, max=2291, avg=1037.44, stdev=323.17 lat (msec): min=331, max=2291, avg=1037.81, stdev=323.16 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 542], 10.00th=[ 634], 20.00th=[ 760], | 30.00th=[ 860], 40.00th=[ 953], 50.00th=[ 1028], 60.00th=[ 1116], | 70.00th=[ 1183], 80.00th=[ 1284], 90.00th=[ 1435], 95.00th=[ 1586], | 99.00th=[ 1938], 99.50th=[ 2123], 99.90th=[ 2265], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 112, per=25.32%, avg=42.03, stdev=19.27, samples=245 iops : min= 1, max= 28, avg=10.02, stdev= 4.83, samples=245 lat (msec) : 20=0.04%, 50=0.08%, 100=0.12%, 250=0.20%, 500=28.59% lat (msec) : 750=27.23%, 1000=16.60%, 2000=26.72%, >=2000=0.43% cpu : usr=0.09%, sys=0.58%, ctx=4189, 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=145274: Mon Aug 31 09:51:13 2026 read: IOPS=9, BW=39.7KiB/s (40.6kB/s)(4984KiB/125555msec) slat (usec): min=3511, max=78151, avg=16628.63, stdev=8986.56 clat (msec): min=11, max=1336, avg=487.85, stdev=140.91 lat (msec): min=28, max=1352, avg=504.48, stdev=142.45 clat percentiles (msec): | 1.00th=[ 180], 5.00th=[ 309], 10.00th=[ 342], 20.00th=[ 380], | 30.00th=[ 414], 40.00th=[ 435], 50.00th=[ 464], 60.00th=[ 498], | 70.00th=[ 531], 80.00th=[ 592], 90.00th=[ 684], 95.00th=[ 751], | 99.00th=[ 919], 99.50th=[ 978], 99.90th=[ 1334], 99.95th=[ 1334], | 99.99th=[ 1334] bw ( KiB/s): min= 7, max= 96, per=24.80%, avg=39.43, stdev=20.57, samples=248 iops : min= 1, max= 24, avg= 9.36, stdev= 5.21, samples=248 write: IOPS=10, BW=41.9KiB/s (42.9kB/s)(5256KiB/125555msec); 0 zone resets slat (usec): min=51, max=20918, avg=386.10, stdev=1152.29 clat (msec): min=144, max=2285, avg=1046.96, stdev=322.84 lat (msec): min=155, max=2286, avg=1047.36, stdev=322.81 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 567], 10.00th=[ 667], 20.00th=[ 776], | 30.00th=[ 877], 40.00th=[ 944], 50.00th=[ 1036], 60.00th=[ 1116], | 70.00th=[ 1183], 80.00th=[ 1301], 90.00th=[ 1452], 95.00th=[ 1603], | 99.00th=[ 1989], 99.50th=[ 2140], 99.90th=[ 2265], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 102, per=24.89%, avg=41.32, stdev=18.36, samples=248 iops : min= 1, max= 25, avg= 9.84, stdev= 4.60, samples=248 lat (msec) : 20=0.04%, 50=0.08%, 100=0.23%, 250=0.43%, 500=30.74% lat (msec) : 750=24.18%, 1000=16.68%, 2000=27.11%, >=2000=0.51% cpu : usr=0.10%, sys=0.59%, ctx=4419, 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=145275: Mon Aug 31 09:51:13 2026 read: IOPS=10, BW=40.3KiB/s (41.3kB/s)(5060KiB/125553msec) slat (usec): min=3458, max=68592, avg=16561.54, stdev=9365.30 clat (msec): min=35, max=1240, avg=493.48, stdev=140.62 lat (msec): min=44, max=1249, avg=510.05, stdev=142.10 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 309], 10.00th=[ 351], 20.00th=[ 380], | 30.00th=[ 414], 40.00th=[ 439], 50.00th=[ 468], 60.00th=[ 506], | 70.00th=[ 550], 80.00th=[ 609], 90.00th=[ 693], 95.00th=[ 743], | 99.00th=[ 877], 99.50th=[ 953], 99.90th=[ 1217], 99.95th=[ 1234], | 99.99th=[ 1234] bw ( KiB/s): min= 7, max= 120, per=25.48%, avg=40.51, stdev=20.18, samples=245 iops : min= 1, max= 30, avg= 9.64, stdev= 5.10, samples=245 write: IOPS=10, BW=41.3KiB/s (42.2kB/s)(5180KiB/125553msec); 0 zone resets slat (usec): min=54, max=26656, avg=355.79, stdev=1129.20 clat (msec): min=321, max=2316, avg=1049.03, stdev=315.57 lat (msec): min=321, max=2316, avg=1049.39, stdev=315.59 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 550], 10.00th=[ 651], 20.00th=[ 776], | 30.00th=[ 877], 40.00th=[ 953], 50.00th=[ 1045], 60.00th=[ 1133], | 70.00th=[ 1200], 80.00th=[ 1301], 90.00th=[ 1435], 95.00th=[ 1603], | 99.00th=[ 1955], 99.50th=[ 2106], 99.90th=[ 2232], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 104, per=24.64%, avg=40.89, stdev=19.34, samples=247 iops : min= 1, max= 26, avg= 9.73, stdev= 4.87, samples=247 lat (msec) : 50=0.16%, 100=0.12%, 250=0.23%, 500=29.88%, 750=25.90% lat (msec) : 1000=15.31%, 2000=27.97%, >=2000=0.43% cpu : usr=0.08%, sys=0.61%, ctx=4258, 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=160KiB/s (164kB/s), 39.6KiB/s-40.3KiB/s (40.6kB/s-41.3kB/s), io=19.6MiB (20.5MB), run=125111-125555msec WRITE: bw=166KiB/s (170kB/s), 41.3KiB/s-41.9KiB/s (42.2kB/s-42.9kB/s), io=20.4MiB (21.4MB), run=125111-125555msec 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=145298: Mon Aug 31 09:51:24 2026 read: IOPS=1, BW=71.7MiB/s (75.2MB/s)(40.0MiB/558msec) slat (nsec): min=38344k, max=38344k, avg=38344026.00, stdev= 0.00 clat (nsec): min=491878k, max=491878k, avg=491878335.00, stdev= 0.00 lat (nsec): min=530259k, max=530259k, avg=530259318.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 493], 10.00th=[ 493], 20.00th=[ 493], | 30.00th=[ 493], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] lat (msec) : 500=100.00% cpu : usr=0.18%, sys=2.69%, ctx=29, 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=71.7MiB/s (75.2MB/s), 71.7MiB/s-71.7MiB/s (75.2MB/s-75.2MB/s), io=40.0MiB (41.9MB), run=558-558msec 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