== sanity test 398c: run fio to test AIO ================= 05:03:58 (1787389438) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.590209 s, 71.1 MB/s osc.lustre-OST0000-osc-ffff9a5052217000.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=145603: Sat Aug 22 05:07:11 2026 write: IOPS=14, BW=56.5KiB/s (57.9kB/s)(10.0MiB/181113msec); 0 zone resets slat (usec): min=38, max=19868, avg=301.43, stdev=971.08 clat (msec): min=201, max=2594, avg=1130.78, stdev=336.37 lat (msec): min=201, max=2594, avg=1131.08, stdev=336.40 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 634], 10.00th=[ 718], 20.00th=[ 869], | 30.00th=[ 961], 40.00th=[ 1045], 50.00th=[ 1116], 60.00th=[ 1200], | 70.00th=[ 1284], 80.00th=[ 1401], 90.00th=[ 1536], 95.00th=[ 1720], | 99.00th=[ 1972], 99.50th=[ 2106], 99.90th=[ 2467], 99.95th=[ 2601], | 99.99th=[ 2601] bw ( KiB/s): min= 7, max= 256, per=25.82%, avg=58.08, stdev=31.33, samples=346 iops : min= 1, max= 64, avg=14.03, stdev= 7.86, samples=346 lat (msec) : 250=1.21%, 500=1.60%, 750=8.79%, 1000=23.36%, 2000=64.14% lat (msec) : >=2000=0.90% cpu : usr=0.04%, sys=0.24%, ctx=1937, 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=145604: Sat Aug 22 05:07:11 2026 write: IOPS=14, BW=56.5KiB/s (57.9kB/s)(10.0MiB/181158msec); 0 zone resets slat (usec): min=38, max=21113, avg=284.68, stdev=971.07 clat (msec): min=202, max=2586, avg=1130.96, stdev=330.58 lat (msec): min=202, max=2587, avg=1131.25, stdev=330.62 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 676], 10.00th=[ 743], 20.00th=[ 877], | 30.00th=[ 953], 40.00th=[ 1045], 50.00th=[ 1116], 60.00th=[ 1200], | 70.00th=[ 1284], 80.00th=[ 1385], 90.00th=[ 1552], 95.00th=[ 1687], | 99.00th=[ 2022], 99.50th=[ 2072], 99.90th=[ 2400], 99.95th=[ 2500], | 99.99th=[ 2601] bw ( KiB/s): min= 7, max= 256, per=25.67%, avg=57.75, stdev=31.95, samples=348 iops : min= 1, max= 64, avg=13.95, stdev= 8.04, samples=348 lat (msec) : 250=1.25%, 500=1.56%, 750=7.23%, 1000=24.57%, 2000=64.26% lat (msec) : >=2000=1.13% cpu : usr=0.04%, sys=0.24%, ctx=1782, 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=145605: Sat Aug 22 05:07:11 2026 write: IOPS=14, BW=56.5KiB/s (57.9kB/s)(10.0MiB/181243msec); 0 zone resets slat (usec): min=38, max=18371, avg=260.26, stdev=816.32 clat (msec): min=205, max=2274, avg=1131.60, stdev=327.98 lat (msec): min=206, max=2274, avg=1131.86, stdev=327.96 clat percentiles (msec): | 1.00th=[ 226], 5.00th=[ 651], 10.00th=[ 743], 20.00th=[ 869], | 30.00th=[ 961], 40.00th=[ 1053], 50.00th=[ 1133], 60.00th=[ 1200], | 70.00th=[ 1301], 80.00th=[ 1401], 90.00th=[ 1519], 95.00th=[ 1670], | 99.00th=[ 1938], 99.50th=[ 2056], 99.90th=[ 2265], 99.95th=[ 2265], | 99.99th=[ 2265] bw ( KiB/s): min= 7, max= 256, per=26.06%, avg=58.62, stdev=33.57, samples=343 iops : min= 1, max= 64, avg=14.17, stdev= 8.42, samples=343 lat (msec) : 250=1.21%, 500=1.76%, 750=7.30%, 1000=23.32%, 2000=65.66% lat (msec) : >=2000=0.74% cpu : usr=0.04%, sys=0.25%, ctx=1762, 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=145606: Sat Aug 22 05:07:11 2026 write: IOPS=14, BW=56.6KiB/s (57.9kB/s)(10.0MiB/181061msec); 0 zone resets slat (usec): min=38, max=15345, avg=260.63, stdev=771.37 clat (msec): min=112, max=2589, avg=1130.91, stdev=334.22 lat (msec): min=113, max=2590, avg=1131.17, stdev=334.19 clat percentiles (msec): | 1.00th=[ 228], 5.00th=[ 634], 10.00th=[ 743], 20.00th=[ 869], | 30.00th=[ 961], 40.00th=[ 1045], 50.00th=[ 1116], 60.00th=[ 1200], | 70.00th=[ 1301], 80.00th=[ 1401], 90.00th=[ 1536], 95.00th=[ 1687], | 99.00th=[ 2022], 99.50th=[ 2140], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2601] bw ( KiB/s): min= 7, max= 256, per=25.66%, avg=57.74, stdev=30.03, samples=348 iops : min= 1, max= 64, avg=13.94, stdev= 7.54, samples=348 lat (msec) : 250=1.13%, 500=2.11%, 750=7.38%, 1000=23.63%, 2000=64.57% lat (msec) : >=2000=1.17% cpu : usr=0.03%, sys=0.25%, ctx=1994, 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=226KiB/s (231kB/s), 56.5KiB/s-56.6KiB/s (57.9kB/s-57.9kB/s), io=40.0MiB (41.9MB), run=181061-181243msec 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=145643: Sat Aug 22 05:09:28 2026 read: IOPS=10, BW=40.0KiB/s (40.0kB/s)(5048KiB/126089msec) slat (usec): min=3433, max=58488, avg=17054.82, stdev=9344.77 clat (msec): min=10, max=979, avg=488.49, stdev=134.38 lat (msec): min=16, max=1005, avg=505.55, stdev=136.06 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 313], 10.00th=[ 338], 20.00th=[ 380], | 30.00th=[ 409], 40.00th=[ 435], 50.00th=[ 472], 60.00th=[ 506], | 70.00th=[ 542], 80.00th=[ 592], 90.00th=[ 667], 95.00th=[ 735], | 99.00th=[ 877], 99.50th=[ 919], 99.90th=[ 961], 99.95th=[ 978], | 99.99th=[ 978] bw ( KiB/s): min= 7, max= 95, per=25.35%, avg=40.31, stdev=19.67, samples=245 iops : min= 1, max= 23, avg= 9.56, stdev= 4.92, samples=245 write: IOPS=10, BW=41.2KiB/s (42.2kB/s)(5192KiB/126089msec); 0 zone resets slat (usec): min=57, max=18967, avg=378.38, stdev=1129.08 clat (msec): min=458, max=2057, avg=1059.13, stdev=285.36 lat (msec): min=459, max=2057, avg=1059.52, stdev=285.43 clat percentiles (msec): | 1.00th=[ 535], 5.00th=[ 651], 10.00th=[ 735], 20.00th=[ 818], | 30.00th=[ 885], 40.00th=[ 953], 50.00th=[ 1020], 60.00th=[ 1099], | 70.00th=[ 1183], 80.00th=[ 1284], 90.00th=[ 1452], 95.00th=[ 1620], | 99.00th=[ 1838], 99.50th=[ 1938], 99.90th=[ 2039], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 103, per=24.75%, avg=40.83, stdev=19.05, samples=248 iops : min= 1, max= 25, avg= 9.68, stdev= 4.79, samples=248 lat (msec) : 20=0.04%, 50=0.08%, 100=0.08%, 250=0.31%, 500=28.20% lat (msec) : 750=24.10%, 1000=20.27%, 2000=26.80%, >=2000=0.12% cpu : usr=0.08%, sys=0.63%, ctx=4658, 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=145644: Sat Aug 22 05:09:28 2026 read: IOPS=9, BW=39.4KiB/s (40.4kB/s)(4976KiB/126192msec) slat (usec): min=2734, max=65144, avg=16907.74, stdev=9379.87 clat (msec): min=18, max=1086, avg=484.64, stdev=136.03 lat (msec): min=39, max=1137, avg=501.56, stdev=137.64 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 305], 10.00th=[ 338], 20.00th=[ 376], | 30.00th=[ 409], 40.00th=[ 443], 50.00th=[ 472], 60.00th=[ 506], | 70.00th=[ 535], 80.00th=[ 584], 90.00th=[ 659], 95.00th=[ 743], | 99.00th=[ 877], 99.50th=[ 911], 99.90th=[ 978], 99.95th=[ 1083], | 99.99th=[ 1083] bw ( KiB/s): min= 7, max= 103, per=24.55%, avg=39.03, stdev=20.36, samples=249 iops : min= 1, max= 25, avg= 9.24, stdev= 5.11, samples=249 write: IOPS=10, BW=41.7KiB/s (42.7kB/s)(5264KiB/126192msec); 0 zone resets slat (usec): min=37, max=24182, avg=368.45, stdev=1180.17 clat (msec): min=268, max=2036, avg=1056.71, stdev=283.86 lat (msec): min=268, max=2036, avg=1057.08, stdev=283.83 clat percentiles (msec): | 1.00th=[ 523], 5.00th=[ 667], 10.00th=[ 743], 20.00th=[ 827], | 30.00th=[ 885], 40.00th=[ 944], 50.00th=[ 1003], 60.00th=[ 1083], | 70.00th=[ 1183], 80.00th=[ 1284], 90.00th=[ 1452], 95.00th=[ 1603], | 99.00th=[ 1838], 99.50th=[ 1921], 99.90th=[ 2039], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 96, per=25.01%, avg=41.27, stdev=18.21, samples=249 iops : min= 1, max= 24, avg= 9.79, stdev= 4.59, samples=249 lat (msec) : 20=0.04%, 50=0.16%, 100=0.20%, 250=0.55%, 500=27.97% lat (msec) : 750=22.85%, 1000=21.99%, 2000=26.13%, >=2000=0.12% cpu : usr=0.10%, sys=0.65%, ctx=4425, majf=0, minf=16 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=145645: Sat Aug 22 05:09:28 2026 read: IOPS=9, BW=39.5KiB/s (40.5kB/s)(4984KiB/126160msec) slat (usec): min=58, max=92257, avg=17308.68, stdev=10116.51 clat (msec): min=11, max=1058, avg=489.87, stdev=137.31 lat (msec): min=28, max=1073, avg=507.19, stdev=139.15 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 305], 10.00th=[ 338], 20.00th=[ 376], | 30.00th=[ 414], 40.00th=[ 443], 50.00th=[ 472], 60.00th=[ 506], | 70.00th=[ 550], 80.00th=[ 600], 90.00th=[ 676], 95.00th=[ 751], | 99.00th=[ 869], 99.50th=[ 911], 99.90th=[ 961], 99.95th=[ 1062], | 99.99th=[ 1062] bw ( KiB/s): min= 7, max= 103, per=24.89%, avg=39.58, stdev=21.10, samples=247 iops : min= 1, max= 25, avg= 9.37, stdev= 5.29, samples=247 write: IOPS=10, BW=41.7KiB/s (42.7kB/s)(5256KiB/126160msec); 0 zone resets slat (usec): min=56, max=13911, avg=351.13, stdev=898.28 clat (msec): min=249, max=2016, avg=1053.91, stdev=291.28 lat (msec): min=250, max=2016, avg=1054.26, stdev=291.34 clat percentiles (msec): | 1.00th=[ 447], 5.00th=[ 634], 10.00th=[ 735], 20.00th=[ 818], | 30.00th=[ 877], 40.00th=[ 944], 50.00th=[ 1020], 60.00th=[ 1083], | 70.00th=[ 1183], 80.00th=[ 1301], 90.00th=[ 1452], 95.00th=[ 1603], | 99.00th=[ 1804], 99.50th=[ 1921], 99.90th=[ 2005], 99.95th=[ 2022], | 99.99th=[ 2022] bw ( KiB/s): min= 7, max= 103, per=25.07%, avg=41.37, stdev=19.67, samples=247 iops : min= 1, max= 25, avg= 9.82, stdev= 4.97, samples=247 lat (msec) : 20=0.04%, 50=0.04%, 100=0.23%, 250=0.35%, 500=28.63% lat (msec) : 750=23.12%, 1000=20.59%, 2000=26.88%, >=2000=0.12% cpu : usr=0.07%, sys=0.65%, ctx=4755, 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=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=145646: Sat Aug 22 05:09:28 2026 read: IOPS=10, BW=40.1KiB/s (41.1kB/s)(5060KiB/126160msec) slat (usec): min=3261, max=68340, avg=17271.76, stdev=10000.32 clat (msec): min=16, max=1003, avg=487.91, stdev=134.53 lat (msec): min=36, max=1011, avg=505.19, stdev=136.23 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 309], 10.00th=[ 338], 20.00th=[ 376], | 30.00th=[ 409], 40.00th=[ 439], 50.00th=[ 477], 60.00th=[ 510], | 70.00th=[ 542], 80.00th=[ 592], 90.00th=[ 659], 95.00th=[ 743], | 99.00th=[ 885], 99.50th=[ 911], 99.90th=[ 986], 99.95th=[ 1003], | 99.99th=[ 1003] bw ( KiB/s): min= 7, max= 110, per=25.23%, avg=40.11, stdev=19.33, samples=247 iops : min= 1, max= 27, avg= 9.51, stdev= 4.87, samples=247 write: IOPS=10, BW=41.1KiB/s (42.0kB/s)(5180KiB/126160msec); 0 zone resets slat (usec): min=47, max=18923, avg=414.17, stdev=1224.40 clat (msec): min=389, max=2056, avg=1062.11, stdev=291.80 lat (msec): min=389, max=2057, avg=1062.52, stdev=291.81 clat percentiles (msec): | 1.00th=[ 510], 5.00th=[ 651], 10.00th=[ 726], 20.00th=[ 818], | 30.00th=[ 885], 40.00th=[ 953], 50.00th=[ 1036], 60.00th=[ 1099], | 70.00th=[ 1183], 80.00th=[ 1284], 90.00th=[ 1452], 95.00th=[ 1636], | 99.00th=[ 1854], 99.50th=[ 1972], 99.90th=[ 2039], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 111, per=24.97%, avg=41.20, stdev=18.84, samples=245 iops : min= 1, max= 27, avg= 9.78, stdev= 4.73, samples=245 lat (msec) : 20=0.08%, 50=0.04%, 100=0.16%, 250=0.43%, 500=28.01% lat (msec) : 750=24.61%, 1000=19.61%, 2000=26.84%, >=2000=0.23% cpu : usr=0.09%, sys=0.67%, ctx=4722, 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=159KiB/s (163kB/s), 39.4KiB/s-40.1KiB/s (40.4kB/s-41.1kB/s), io=19.6MiB (20.5MB), run=126089-126192msec WRITE: bw=166KiB/s (170kB/s), 41.1KiB/s-41.7KiB/s (42.0kB/s-42.7kB/s), io=20.4MiB (21.4MB), run=126089-126192msec 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=145669: Sat Aug 22 05:09:41 2026 read: IOPS=1, BW=43.6MiB/s (45.7MB/s)(40.0MiB/917msec) slat (nsec): min=65665k, max=65665k, avg=65665450.00, stdev= 0.00 clat (nsec): min=831616k, max=831616k, avg=831616371.00, stdev= 0.00 lat (nsec): min=897287k, max=897287k, avg=897286912.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 835], 5.00th=[ 835], 10.00th=[ 835], 20.00th=[ 835], | 30.00th=[ 835], 40.00th=[ 835], 50.00th=[ 835], 60.00th=[ 835], | 70.00th=[ 835], 80.00th=[ 835], 90.00th=[ 835], 95.00th=[ 835], | 99.00th=[ 835], 99.50th=[ 835], 99.90th=[ 835], 99.95th=[ 835], | 99.99th=[ 835] lat (msec) : 1000=100.00% cpu : usr=0.00%, sys=0.87%, ctx=3, 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=43.6MiB/s (45.7MB/s), 43.6MiB/s-43.6MiB/s (45.7MB/s-45.7MB/s), io=40.0MiB (41.9MB), run=917-917msec 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