== sanity test 398c: run fio to test AIO ================= 06:09:26 (1787393366) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.550329 s, 76.2 MB/s osc.lustre-OST0000-osc-ffff8a7b71e61800.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=144928: Sat Aug 22 06:12:10 2026 write: IOPS=16, BW=66.5KiB/s (68.0kB/s)(10.0MiB/154096msec); 0 zone resets slat (usec): min=38, max=13475, avg=204.37, stdev=534.27 clat (msec): min=334, max=2232, avg=962.14, stdev=298.14 lat (msec): min=334, max=2232, avg=962.35, stdev=298.14 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 575], 10.00th=[ 651], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 860], 50.00th=[ 911], 60.00th=[ 978], | 70.00th=[ 1045], 80.00th=[ 1150], 90.00th=[ 1351], 95.00th=[ 1519], | 99.00th=[ 1972], 99.50th=[ 2039], 99.90th=[ 2123], 99.95th=[ 2123], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 135, per=25.20%, avg=66.79, stdev=30.12, samples=302 iops : min= 1, max= 33, avg=16.28, stdev= 7.54, samples=302 lat (msec) : 500=2.38%, 750=21.68%, 1000=39.49%, 2000=35.59%, >=2000=0.86% cpu : usr=0.04%, sys=0.26%, ctx=1809, 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=144929: Sat Aug 22 06:12:10 2026 write: IOPS=16, BW=66.6KiB/s (68.2kB/s)(10.0MiB/153741msec); 0 zone resets slat (usec): min=38, max=22607, avg=221.49, stdev=726.15 clat (msec): min=113, max=2174, avg=960.07, stdev=298.09 lat (msec): min=119, max=2174, avg=960.29, stdev=298.05 clat percentiles (msec): | 1.00th=[ 460], 5.00th=[ 575], 10.00th=[ 651], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 860], 50.00th=[ 911], 60.00th=[ 969], | 70.00th=[ 1045], 80.00th=[ 1167], 90.00th=[ 1351], 95.00th=[ 1552], | 99.00th=[ 1921], 99.50th=[ 1989], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 135, per=25.45%, avg=67.45, stdev=28.55, samples=299 iops : min= 1, max= 33, avg=16.44, stdev= 7.16, samples=299 lat (msec) : 250=0.31%, 500=1.60%, 750=22.19%, 1000=39.96%, 2000=35.59% lat (msec) : >=2000=0.35% cpu : usr=0.04%, sys=0.25%, ctx=1737, 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=144930: Sat Aug 22 06:12:10 2026 write: IOPS=16, BW=66.4KiB/s (68.0kB/s)(10.0MiB/154158msec); 0 zone resets slat (usec): min=38, max=18497, avg=195.53, stdev=703.51 clat (msec): min=241, max=2287, avg=962.30, stdev=294.39 lat (msec): min=241, max=2287, avg=962.50, stdev=294.40 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 567], 10.00th=[ 651], 20.00th=[ 735], | 30.00th=[ 793], 40.00th=[ 860], 50.00th=[ 927], 60.00th=[ 978], | 70.00th=[ 1045], 80.00th=[ 1150], 90.00th=[ 1334], 95.00th=[ 1519], | 99.00th=[ 1955], 99.50th=[ 2039], 99.90th=[ 2123], 99.95th=[ 2165], | 99.99th=[ 2299] bw ( KiB/s): min= 7, max= 128, per=25.80%, avg=68.37, stdev=31.99, samples=295 iops : min= 1, max= 32, avg=16.67, stdev= 8.01, samples=295 lat (msec) : 250=0.08%, 500=1.37%, 750=21.17%, 1000=41.33%, 2000=35.43% lat (msec) : >=2000=0.62% cpu : usr=0.03%, sys=0.25%, ctx=1568, 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=144931: Sat Aug 22 06:12:10 2026 write: IOPS=16, BW=66.4KiB/s (67.0kB/s)(10.0MiB/154228msec); 0 zone resets slat (usec): min=36, max=21200, avg=216.22, stdev=746.20 clat (msec): min=410, max=2175, avg=962.72, stdev=292.12 lat (msec): min=410, max=2175, avg=962.94, stdev=292.16 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 567], 10.00th=[ 642], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 978], | 70.00th=[ 1053], 80.00th=[ 1167], 90.00th=[ 1351], 95.00th=[ 1519], | 99.00th=[ 1921], 99.50th=[ 2022], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 128, per=25.56%, avg=67.73, stdev=29.11, samples=298 iops : min= 1, max= 32, avg=16.51, stdev= 7.32, samples=298 lat (msec) : 500=1.41%, 750=21.17%, 1000=42.03%, 2000=34.73%, >=2000=0.66% cpu : usr=0.04%, sys=0.25%, ctx=1699, 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=266KiB/s (272kB/s), 66.4KiB/s-66.6KiB/s (67.0kB/s-68.2kB/s), io=40.0MiB (41.9MB), run=153741-154228msec 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=144963: Sat Aug 22 06:14:12 2026 read: IOPS=11, BW=45.3KiB/s (46.4kB/s)(5048KiB/111458msec) slat (usec): min=3482, max=58857, avg=15241.57, stdev=8512.89 clat (msec): min=15, max=1045, avg=435.51, stdev=128.25 lat (msec): min=26, max=1057, avg=450.76, stdev=129.76 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 262], 10.00th=[ 296], 20.00th=[ 338], | 30.00th=[ 368], 40.00th=[ 401], 50.00th=[ 426], 60.00th=[ 447], | 70.00th=[ 477], 80.00th=[ 518], 90.00th=[ 592], 95.00th=[ 676], | 99.00th=[ 844], 99.50th=[ 902], 99.90th=[ 986], 99.95th=[ 1045], | 99.99th=[ 1045] bw ( KiB/s): min= 7, max= 135, per=24.98%, avg=44.71, stdev=24.22, samples=221 iops : min= 1, max= 33, avg=10.67, stdev= 6.06, samples=221 write: IOPS=11, BW=46.6KiB/s (47.7kB/s)(5192KiB/111458msec); 0 zone resets slat (usec): min=42, max=20545, avg=348.70, stdev=1193.99 clat (msec): min=322, max=2005, avg=931.93, stdev=278.15 lat (msec): min=322, max=2006, avg=932.28, stdev=278.15 clat percentiles (msec): | 1.00th=[ 439], 5.00th=[ 535], 10.00th=[ 592], 20.00th=[ 684], | 30.00th=[ 768], 40.00th=[ 835], 50.00th=[ 911], 60.00th=[ 978], | 70.00th=[ 1053], 80.00th=[ 1150], 90.00th=[ 1318], 95.00th=[ 1435], | 99.00th=[ 1720], 99.50th=[ 1838], 99.90th=[ 2005], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 7, max= 103, per=24.84%, avg=46.46, stdev=19.85, samples=219 iops : min= 1, max= 25, avg=11.11, stdev= 4.95, samples=219 lat (msec) : 20=0.04%, 50=0.08%, 100=0.23%, 250=1.48%, 500=36.72% lat (msec) : 750=23.52%, 1000=19.22%, 2000=18.63%, >=2000=0.08% cpu : usr=0.10%, sys=0.69%, ctx=4665, 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=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=144964: Sat Aug 22 06:14:12 2026 read: IOPS=11, BW=44.6KiB/s (45.7kB/s)(4976KiB/111497msec) slat (usec): min=2977, max=77644, avg=15440.26, stdev=8774.50 clat (msec): min=8, max=1145, avg=437.04, stdev=127.48 lat (msec): min=19, max=1169, avg=452.49, stdev=128.90 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 264], 10.00th=[ 305], 20.00th=[ 342], | 30.00th=[ 372], 40.00th=[ 401], 50.00th=[ 426], 60.00th=[ 456], | 70.00th=[ 485], 80.00th=[ 523], 90.00th=[ 584], 95.00th=[ 659], | 99.00th=[ 844], 99.50th=[ 894], 99.90th=[ 1133], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 120, per=24.67%, avg=44.16, stdev=21.61, samples=220 iops : min= 1, max= 30, avg=10.54, stdev= 5.42, samples=220 write: IOPS=11, BW=47.2KiB/s (48.3kB/s)(5264KiB/111497msec); 0 zone resets slat (usec): min=44, max=15837, avg=318.07, stdev=850.19 clat (msec): min=222, max=1970, avg=925.09, stdev=280.42 lat (msec): min=222, max=1971, avg=925.41, stdev=280.44 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 523], 10.00th=[ 592], 20.00th=[ 684], | 30.00th=[ 760], 40.00th=[ 835], 50.00th=[ 902], 60.00th=[ 969], | 70.00th=[ 1045], 80.00th=[ 1150], 90.00th=[ 1284], 95.00th=[ 1435], | 99.00th=[ 1720], 99.50th=[ 1838], 99.90th=[ 1955], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min= 7, max= 103, per=24.93%, avg=46.62, stdev=20.22, samples=221 iops : min= 1, max= 25, avg=11.16, stdev= 5.04, samples=221 lat (msec) : 10=0.04%, 20=0.04%, 50=0.12%, 100=0.23%, 250=1.60% lat (msec) : 500=36.37%, 750=23.83%, 1000=19.22%, 2000=18.55% cpu : usr=0.09%, sys=0.67%, ctx=4734, majf=0, minf=15 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=144965: Sat Aug 22 06:14:12 2026 read: IOPS=11, BW=44.8KiB/s (45.8kB/s)(4984KiB/111342msec) slat (usec): min=2545, max=92484, avg=15325.68, stdev=8722.13 clat (msec): min=16, max=1146, avg=432.96, stdev=131.65 lat (msec): min=21, max=1164, avg=448.29, stdev=133.38 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 255], 10.00th=[ 296], 20.00th=[ 338], | 30.00th=[ 368], 40.00th=[ 397], 50.00th=[ 422], 60.00th=[ 443], | 70.00th=[ 477], 80.00th=[ 518], 90.00th=[ 584], 95.00th=[ 651], | 99.00th=[ 844], 99.50th=[ 986], 99.90th=[ 1116], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 136, per=24.87%, avg=44.51, stdev=23.27, samples=220 iops : min= 1, max= 34, avg=10.63, stdev= 5.82, samples=220 write: IOPS=11, BW=47.2KiB/s (48.3kB/s)(5256KiB/111342msec); 0 zone resets slat (usec): min=54, max=21337, avg=332.58, stdev=1044.22 clat (msec): min=276, max=1987, avg=926.93, stdev=272.77 lat (msec): min=276, max=1987, avg=927.26, stdev=272.75 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 531], 10.00th=[ 609], 20.00th=[ 684], | 30.00th=[ 760], 40.00th=[ 835], 50.00th=[ 894], 60.00th=[ 969], | 70.00th=[ 1053], 80.00th=[ 1167], 90.00th=[ 1284], 95.00th=[ 1435], | 99.00th=[ 1653], 99.50th=[ 1737], 99.90th=[ 1888], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 7, max= 112, per=25.05%, avg=46.84, stdev=20.37, samples=219 iops : min= 1, max= 28, avg=11.21, stdev= 5.09, samples=219 lat (msec) : 20=0.08%, 50=0.16%, 100=0.27%, 250=1.76%, 500=36.09% lat (msec) : 750=24.34%, 1000=18.87%, 2000=18.44% cpu : usr=0.09%, sys=0.69%, ctx=4741, 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=144966: Sat Aug 22 06:14:12 2026 read: IOPS=11, BW=45.7KiB/s (46.8kB/s)(5060KiB/110679msec) slat (usec): min=2938, max=57815, avg=15009.21, stdev=8351.84 clat (msec): min=5, max=1066, avg=433.46, stdev=125.70 lat (msec): min=11, max=1072, avg=448.48, stdev=127.30 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 262], 10.00th=[ 300], 20.00th=[ 338], | 30.00th=[ 368], 40.00th=[ 397], 50.00th=[ 422], 60.00th=[ 451], | 70.00th=[ 477], 80.00th=[ 514], 90.00th=[ 592], 95.00th=[ 659], | 99.00th=[ 852], 99.50th=[ 885], 99.90th=[ 969], 99.95th=[ 1070], | 99.99th=[ 1070] bw ( KiB/s): min= 7, max= 112, per=25.67%, avg=45.95, stdev=22.48, samples=216 iops : min= 1, max= 28, avg=10.99, stdev= 5.64, samples=216 write: IOPS=11, BW=46.8KiB/s (47.9kB/s)(5180KiB/110679msec); 0 zone resets slat (usec): min=41, max=12312, avg=309.00, stdev=815.98 clat (msec): min=199, max=2004, avg=927.26, stdev=286.18 lat (msec): min=200, max=2004, avg=927.57, stdev=286.16 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 518], 10.00th=[ 584], 20.00th=[ 693], | 30.00th=[ 760], 40.00th=[ 827], 50.00th=[ 894], 60.00th=[ 969], | 70.00th=[ 1045], 80.00th=[ 1167], 90.00th=[ 1301], 95.00th=[ 1452], | 99.00th=[ 1720], 99.50th=[ 1838], 99.90th=[ 1921], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 7, max= 112, per=24.71%, avg=46.21, stdev=21.01, samples=219 iops : min= 1, max= 28, avg=11.05, stdev= 5.25, samples=219 lat (msec) : 10=0.04%, 50=0.12%, 100=0.16%, 250=1.91%, 500=37.89% lat (msec) : 750=22.38%, 1000=19.45%, 2000=18.01%, >=2000=0.04% cpu : usr=0.09%, sys=0.64%, ctx=4752, majf=0, minf=15 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=180KiB/s (184kB/s), 44.6KiB/s-45.7KiB/s (45.7kB/s-46.8kB/s), io=19.6MiB (20.5MB), run=110679-111497msec WRITE: bw=187KiB/s (192kB/s), 46.6KiB/s-47.2KiB/s (47.7kB/s-48.3kB/s), io=20.4MiB (21.4MB), run=110679-111497msec 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=144987: Sat Aug 22 06:14:22 2026 read: IOPS=1, BW=62.8MiB/s (65.8MB/s)(40.0MiB/637msec) slat (nsec): min=45798k, max=45798k, avg=45798368.00, stdev= 0.00 clat (nsec): min=566153k, max=566153k, avg=566152562.00, stdev= 0.00 lat (nsec): min=611955k, max=611955k, avg=611955106.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 567], 5.00th=[ 567], 10.00th=[ 567], 20.00th=[ 567], | 30.00th=[ 567], 40.00th=[ 567], 50.00th=[ 567], 60.00th=[ 567], | 70.00th=[ 567], 80.00th=[ 567], 90.00th=[ 567], 95.00th=[ 567], | 99.00th=[ 567], 99.50th=[ 567], 99.90th=[ 567], 99.95th=[ 567], | 99.99th=[ 567] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.42%, 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=62.8MiB/s (65.8MB/s), 62.8MiB/s-62.8MiB/s (65.8MB/s-65.8MB/s), io=40.0MiB (41.9MB), run=637-637msec 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