== sanity test 398c: run fio to test AIO ================= 10:22:34 (1787840554) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.387377 s, 108 MB/s osc.lustre-OST0000-osc-ffff9a3ce0403000.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=145214: Thu Aug 27 10:25:07 2026 write: IOPS=17, BW=71.3KiB/s (73.1kB/s)(10.0MiB/143533msec); 0 zone resets slat (usec): min=23, max=16426, avg=201.27, stdev=753.48 clat (msec): min=167, max=2561, avg=895.98, stdev=283.71 lat (msec): min=167, max=2561, avg=896.18, stdev=283.72 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 439], 10.00th=[ 592], 20.00th=[ 693], | 30.00th=[ 760], 40.00th=[ 810], 50.00th=[ 869], 60.00th=[ 936], | 70.00th=[ 1011], 80.00th=[ 1099], 90.00th=[ 1250], 95.00th=[ 1351], | 99.00th=[ 1687], 99.50th=[ 2198], 99.90th=[ 2400], 99.95th=[ 2433], | 99.99th=[ 2567] bw ( KiB/s): min= 7, max= 254, per=25.44%, avg=72.51, stdev=35.38, samples=278 iops : min= 1, max= 63, avg=17.69, stdev= 8.89, samples=278 lat (msec) : 250=1.25%, 500=4.96%, 750=22.15%, 1000=40.12%, 2000=30.90% lat (msec) : >=2000=0.62% cpu : usr=0.05%, sys=0.24%, ctx=2009, 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=145215: Thu Aug 27 10:25:07 2026 write: IOPS=17, BW=71.3KiB/s (73.0kB/s)(10.0MiB/143607msec); 0 zone resets slat (usec): min=25, max=17070, avg=195.99, stdev=728.33 clat (msec): min=154, max=2315, avg=896.46, stdev=281.35 lat (msec): min=154, max=2318, avg=896.66, stdev=281.34 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 447], 10.00th=[ 592], 20.00th=[ 693], | 30.00th=[ 760], 40.00th=[ 818], 50.00th=[ 869], 60.00th=[ 944], | 70.00th=[ 1011], 80.00th=[ 1099], 90.00th=[ 1217], 95.00th=[ 1334], | 99.00th=[ 1670], 99.50th=[ 2198], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 254, per=24.81%, avg=70.71, stdev=31.86, samples=285 iops : min= 1, max= 63, avg=17.24, stdev= 8.00, samples=285 lat (msec) : 250=1.25%, 500=4.92%, 750=21.48%, 1000=40.94%, 2000=30.78% lat (msec) : >=2000=0.62% cpu : usr=0.04%, sys=0.23%, ctx=2176, 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=145216: Thu Aug 27 10:25:07 2026 write: IOPS=17, BW=71.3KiB/s (73.1kB/s)(10.0MiB/143538msec); 0 zone resets slat (usec): min=24, max=17734, avg=218.98, stdev=854.16 clat (msec): min=180, max=2431, avg=896.04, stdev=284.33 lat (msec): min=180, max=2431, avg=896.26, stdev=284.37 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 435], 10.00th=[ 592], 20.00th=[ 693], | 30.00th=[ 760], 40.00th=[ 818], 50.00th=[ 869], 60.00th=[ 944], | 70.00th=[ 1003], 80.00th=[ 1116], 90.00th=[ 1250], 95.00th=[ 1351], | 99.00th=[ 1703], 99.50th=[ 2165], 99.90th=[ 2400], 99.95th=[ 2400], | 99.99th=[ 2433] bw ( KiB/s): min= 7, max= 223, per=24.90%, avg=70.97, stdev=33.89, samples=284 iops : min= 1, max= 55, avg=17.30, stdev= 8.50, samples=284 lat (msec) : 250=1.68%, 500=4.77%, 750=21.52%, 1000=40.78%, 2000=30.62% lat (msec) : >=2000=0.62% cpu : usr=0.03%, sys=0.22%, ctx=1940, 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=145217: Thu Aug 27 10:25:07 2026 write: IOPS=17, BW=71.4KiB/s (73.1kB/s)(10.0MiB/143458msec); 0 zone resets slat (usec): min=31, max=14987, avg=243.63, stdev=933.73 clat (msec): min=119, max=2560, avg=895.98, stdev=284.08 lat (msec): min=119, max=2560, avg=896.22, stdev=284.08 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 447], 10.00th=[ 592], 20.00th=[ 693], | 30.00th=[ 760], 40.00th=[ 818], 50.00th=[ 877], 60.00th=[ 944], | 70.00th=[ 1011], 80.00th=[ 1099], 90.00th=[ 1234], 95.00th=[ 1351], | 99.00th=[ 1670], 99.50th=[ 2165], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2567] bw ( KiB/s): min= 8, max= 245, per=24.81%, avg=70.70, stdev=30.19, samples=285 iops : min= 2, max= 61, avg=17.24, stdev= 7.58, samples=285 lat (msec) : 250=1.84%, 500=4.77%, 750=21.09%, 1000=40.51%, 2000=31.17% lat (msec) : >=2000=0.62% cpu : usr=0.04%, sys=0.25%, ctx=2541, 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=285KiB/s (292kB/s), 71.3KiB/s-71.4KiB/s (73.0kB/s-73.1kB/s), io=40.0MiB (41.9MB), run=143458-143607msec 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=145248: Thu Aug 27 10:26:56 2026 read: IOPS=12, BW=49.7KiB/s (50.9kB/s)(5048KiB/101561msec) slat (usec): min=2342, max=77311, avg=13173.75, stdev=8137.74 clat (msec): min=18, max=996, avg=403.09, stdev=136.13 lat (msec): min=25, max=1026, avg=416.27, stdev=138.76 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 241], 10.00th=[ 275], 20.00th=[ 309], | 30.00th=[ 330], 40.00th=[ 351], 50.00th=[ 376], 60.00th=[ 401], | 70.00th=[ 439], 80.00th=[ 477], 90.00th=[ 567], 95.00th=[ 709], | 99.00th=[ 827], 99.50th=[ 927], 99.90th=[ 978], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 143, per=24.97%, avg=49.18, stdev=24.26, samples=201 iops : min= 1, max= 35, avg=11.84, stdev= 6.09, samples=201 write: IOPS=12, BW=51.1KiB/s (52.3kB/s)(5192KiB/101561msec); 0 zone resets slat (usec): min=32, max=33174, avg=259.81, stdev=1074.89 clat (msec): min=202, max=2023, avg=844.75, stdev=299.66 lat (msec): min=202, max=2023, avg=845.02, stdev=299.67 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 456], 10.00th=[ 510], 20.00th=[ 600], | 30.00th=[ 676], 40.00th=[ 735], 50.00th=[ 802], 60.00th=[ 869], | 70.00th=[ 953], 80.00th=[ 1028], 90.00th=[ 1200], 95.00th=[ 1485], | 99.00th=[ 1821], 99.50th=[ 1921], 99.90th=[ 1989], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 7, max= 112, per=24.76%, avg=50.76, stdev=23.06, samples=201 iops : min= 1, max= 28, avg=12.23, stdev= 5.80, samples=201 lat (msec) : 20=0.04%, 50=0.16%, 100=0.12%, 250=2.93%, 500=42.54% lat (msec) : 750=23.59%, 1000=19.02%, 2000=11.56%, >=2000=0.04% cpu : usr=0.09%, sys=0.59%, ctx=4777, 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=145249: Thu Aug 27 10:26:56 2026 read: IOPS=12, BW=49.0KiB/s (50.2kB/s)(4976KiB/101521msec) slat (usec): min=2482, max=77577, avg=13270.82, stdev=8388.97 clat (msec): min=32, max=1057, avg=402.70, stdev=133.65 lat (msec): min=42, max=1121, avg=415.98, stdev=136.28 clat percentiles (msec): | 1.00th=[ 197], 5.00th=[ 245], 10.00th=[ 275], 20.00th=[ 309], | 30.00th=[ 330], 40.00th=[ 351], 50.00th=[ 376], 60.00th=[ 401], | 70.00th=[ 435], 80.00th=[ 477], 90.00th=[ 567], 95.00th=[ 701], | 99.00th=[ 852], 99.50th=[ 927], 99.90th=[ 1053], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 120, per=24.97%, avg=49.20, stdev=22.44, samples=198 iops : min= 1, max= 30, avg=11.84, stdev= 5.62, samples=198 write: IOPS=12, BW=51.9KiB/s (53.1kB/s)(5264KiB/101521msec); 0 zone resets slat (usec): min=32, max=11718, avg=247.87, stdev=719.48 clat (msec): min=198, max=2035, avg=838.70, stdev=301.03 lat (msec): min=198, max=2035, avg=838.95, stdev=301.05 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 468], 10.00th=[ 518], 20.00th=[ 600], | 30.00th=[ 659], 40.00th=[ 718], 50.00th=[ 785], 60.00th=[ 869], | 70.00th=[ 944], 80.00th=[ 1028], 90.00th=[ 1183], 95.00th=[ 1485], | 99.00th=[ 1871], 99.50th=[ 1938], 99.90th=[ 2022], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 119, per=25.12%, avg=51.49, stdev=22.95, samples=201 iops : min= 1, max= 29, avg=12.42, stdev= 5.76, samples=201 lat (msec) : 50=0.04%, 100=0.16%, 250=2.77%, 500=41.99%, 750=25.35% lat (msec) : 1000=17.46%, 2000=12.15%, >=2000=0.08% cpu : usr=0.12%, sys=0.55%, ctx=4583, 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=145250: Thu Aug 27 10:26:56 2026 read: IOPS=12, BW=49.1KiB/s (50.3kB/s)(4984KiB/101464msec) slat (usec): min=2262, max=65076, avg=12873.17, stdev=7738.18 clat (msec): min=17, max=1043, avg=395.60, stdev=135.20 lat (msec): min=23, max=1100, avg=408.48, stdev=137.59 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 239], 10.00th=[ 264], 20.00th=[ 300], | 30.00th=[ 326], 40.00th=[ 347], 50.00th=[ 372], 60.00th=[ 397], | 70.00th=[ 430], 80.00th=[ 468], 90.00th=[ 542], 95.00th=[ 684], | 99.00th=[ 911], 99.50th=[ 944], 99.90th=[ 995], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 135, per=25.13%, avg=49.50, stdev=24.98, samples=198 iops : min= 1, max= 33, avg=11.92, stdev= 6.26, samples=198 write: IOPS=12, BW=51.8KiB/s (53.0kB/s)(5256KiB/101464msec); 0 zone resets slat (usec): min=29, max=33792, avg=286.07, stdev=1327.18 clat (msec): min=209, max=2007, avg=845.61, stdev=293.11 lat (msec): min=210, max=2007, avg=845.90, stdev=293.16 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 472], 10.00th=[ 527], 20.00th=[ 609], | 30.00th=[ 667], 40.00th=[ 735], 50.00th=[ 793], 60.00th=[ 869], | 70.00th=[ 953], 80.00th=[ 1036], 90.00th=[ 1217], 95.00th=[ 1435], | 99.00th=[ 1787], 99.50th=[ 1921], 99.90th=[ 1989], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 7, max= 119, per=24.96%, avg=51.17, stdev=22.68, samples=201 iops : min= 1, max= 29, avg=12.34, stdev= 5.68, samples=201 lat (msec) : 20=0.04%, 50=0.16%, 100=0.23%, 250=3.28%, 500=41.95% lat (msec) : 750=23.32%, 1000=19.10%, 2000=11.88%, >=2000=0.04% cpu : usr=0.10%, sys=0.57%, ctx=4384, 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=145251: Thu Aug 27 10:26:56 2026 read: IOPS=12, BW=50.3KiB/s (51.5kB/s)(5060KiB/100680msec) slat (usec): min=49, max=79631, avg=13036.10, stdev=7919.75 clat (msec): min=15, max=1082, avg=400.96, stdev=144.54 lat (msec): min=15, max=1102, avg=414.01, stdev=147.24 clat percentiles (msec): | 1.00th=[ 58], 5.00th=[ 239], 10.00th=[ 264], 20.00th=[ 305], | 30.00th=[ 330], 40.00th=[ 347], 50.00th=[ 372], 60.00th=[ 401], | 70.00th=[ 430], 80.00th=[ 481], 90.00th=[ 584], 95.00th=[ 718], | 99.00th=[ 902], 99.50th=[ 961], 99.90th=[ 1045], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 120, per=25.39%, avg=50.02, stdev=23.25, samples=199 iops : min= 1, max= 30, avg=12.05, stdev= 5.85, samples=199 write: IOPS=12, BW=51.4KiB/s (52.7kB/s)(5180KiB/100680msec); 0 zone resets slat (usec): min=32, max=20139, avg=264.77, stdev=952.80 clat (msec): min=108, max=2058, avg=838.21, stdev=302.57 lat (msec): min=108, max=2058, avg=838.48, stdev=302.54 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 460], 10.00th=[ 514], 20.00th=[ 609], | 30.00th=[ 667], 40.00th=[ 718], 50.00th=[ 793], 60.00th=[ 860], | 70.00th=[ 944], 80.00th=[ 1028], 90.00th=[ 1183], 95.00th=[ 1469], | 99.00th=[ 1888], 99.50th=[ 1938], 99.90th=[ 2039], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 119, per=25.07%, avg=51.39, stdev=22.91, samples=197 iops : min= 1, max= 29, avg=12.39, stdev= 5.77, samples=197 lat (msec) : 20=0.08%, 50=0.31%, 100=0.31%, 250=3.32%, 500=41.60% lat (msec) : 750=24.61%, 1000=18.20%, 2000=11.45%, >=2000=0.12% cpu : usr=0.10%, sys=0.66%, ctx=4498, 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=198KiB/s (202kB/s), 49.0KiB/s-50.3KiB/s (50.2kB/s-51.5kB/s), io=19.6MiB (20.5MB), run=100680-101561msec WRITE: bw=206KiB/s (211kB/s), 51.1KiB/s-51.9KiB/s (52.3kB/s-53.1kB/s), io=20.4MiB (21.4MB), run=100680-101561msec 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=145274: Thu Aug 27 10:27:03 2026 read: IOPS=2, BW=85.3MiB/s (89.4MB/s)(40.0MiB/469msec) slat (nsec): min=27951k, max=27951k, avg=27950755.00, stdev= 0.00 clat (nsec): min=426291k, max=426291k, avg=426290769.00, stdev= 0.00 lat (nsec): min=454246k, max=454246k, avg=454245824.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 426], 10.00th=[ 426], 20.00th=[ 426], | 30.00th=[ 426], 40.00th=[ 426], 50.00th=[ 426], 60.00th=[ 426], | 70.00th=[ 426], 80.00th=[ 426], 90.00th=[ 426], 95.00th=[ 426], | 99.00th=[ 426], 99.50th=[ 426], 99.90th=[ 426], 99.95th=[ 426], | 99.99th=[ 426] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.78%, ctx=6, 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=85.3MiB/s (89.4MB/s), 85.3MiB/s-85.3MiB/s (89.4MB/s-89.4MB/s), io=40.0MiB (41.9MB), run=469-469msec 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