== sanity test 398c: run fio to test AIO ================= 08:11:58 (1785759118) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.408576 s, 103 MB/s osc.lustre-OST0000-osc-ffff8edfa8a4e000.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=145876: Mon Aug 3 08:14:53 2026 write: IOPS=15, BW=61.7KiB/s (63.2kB/s)(10.0MiB/165938msec); 0 zone resets slat (usec): min=51, max=18539, avg=379.18, stdev=1045.93 clat (msec): min=218, max=2167, avg=1035.45, stdev=344.14 lat (msec): min=218, max=2168, avg=1035.83, stdev=344.18 clat percentiles (msec): | 1.00th=[ 247], 5.00th=[ 600], 10.00th=[ 684], 20.00th=[ 785], | 30.00th=[ 852], 40.00th=[ 919], 50.00th=[ 986], 60.00th=[ 1062], | 70.00th=[ 1150], 80.00th=[ 1284], 90.00th=[ 1485], 95.00th=[ 1720], | 99.00th=[ 2022], 99.50th=[ 2106], 99.90th=[ 2165], 99.95th=[ 2165], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 256, per=24.93%, avg=61.34, stdev=29.20, samples=328 iops : min= 1, max= 64, avg=14.84, stdev= 7.31, samples=328 lat (msec) : 250=1.25%, 500=2.46%, 750=11.91%, 1000=36.95%, 2000=46.37% lat (msec) : >=2000=1.05% cpu : usr=0.05%, sys=0.33%, ctx=2216, 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=145877: Mon Aug 3 08:14:53 2026 write: IOPS=15, BW=61.7KiB/s (63.2kB/s)(10.0MiB/165883msec); 0 zone resets slat (usec): min=47, max=19854, avg=349.39, stdev=1000.74 clat (msec): min=170, max=2153, avg=1035.99, stdev=343.74 lat (msec): min=170, max=2153, avg=1036.35, stdev=343.70 clat percentiles (msec): | 1.00th=[ 241], 5.00th=[ 567], 10.00th=[ 676], 20.00th=[ 785], | 30.00th=[ 860], 40.00th=[ 919], 50.00th=[ 978], 60.00th=[ 1053], | 70.00th=[ 1150], 80.00th=[ 1284], 90.00th=[ 1502], 95.00th=[ 1720], | 99.00th=[ 2005], 99.50th=[ 2056], 99.90th=[ 2106], 99.95th=[ 2123], | 99.99th=[ 2165] bw ( KiB/s): min= 7, max= 256, per=25.37%, avg=62.41, stdev=33.23, samples=322 iops : min= 1, max= 64, avg=15.11, stdev= 8.31, samples=322 lat (msec) : 250=1.41%, 500=2.93%, 750=10.98%, 1000=37.81%, 2000=45.78% lat (msec) : >=2000=1.09% cpu : usr=0.05%, sys=0.30%, ctx=2258, 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=145878: Mon Aug 3 08:14:53 2026 write: IOPS=15, BW=61.8KiB/s (63.3kB/s)(10.0MiB/165771msec); 0 zone resets slat (usec): min=51, max=25627, avg=390.61, stdev=1127.94 clat (msec): min=191, max=2216, avg=1034.65, stdev=345.22 lat (msec): min=191, max=2216, avg=1035.05, stdev=345.24 clat percentiles (msec): | 1.00th=[ 243], 5.00th=[ 584], 10.00th=[ 684], 20.00th=[ 785], | 30.00th=[ 860], 40.00th=[ 919], 50.00th=[ 978], 60.00th=[ 1053], | 70.00th=[ 1150], 80.00th=[ 1284], 90.00th=[ 1485], 95.00th=[ 1720], | 99.00th=[ 2056], 99.50th=[ 2165], 99.90th=[ 2198], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 224, per=24.91%, avg=61.27, stdev=28.98, samples=328 iops : min= 1, max= 56, avg=14.82, stdev= 7.28, samples=328 lat (msec) : 250=1.25%, 500=2.70%, 750=11.45%, 1000=38.48%, 2000=44.65% lat (msec) : >=2000=1.48% cpu : usr=0.05%, sys=0.31%, ctx=2096, 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=145879: Mon Aug 3 08:14:53 2026 write: IOPS=15, BW=61.7KiB/s (63.2kB/s)(10.0MiB/165937msec); 0 zone resets slat (usec): min=51, max=13050, avg=355.92, stdev=955.34 clat (msec): min=194, max=2200, avg=1035.63, stdev=343.67 lat (msec): min=195, max=2200, avg=1035.99, stdev=343.66 clat percentiles (msec): | 1.00th=[ 236], 5.00th=[ 609], 10.00th=[ 684], 20.00th=[ 785], | 30.00th=[ 860], 40.00th=[ 919], 50.00th=[ 978], 60.00th=[ 1053], | 70.00th=[ 1133], 80.00th=[ 1284], 90.00th=[ 1485], 95.00th=[ 1737], | 99.00th=[ 2039], 99.50th=[ 2140], 99.90th=[ 2165], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 232, per=24.98%, avg=61.46, stdev=32.97, samples=327 iops : min= 1, max= 58, avg=14.87, stdev= 8.30, samples=327 lat (msec) : 250=1.88%, 500=1.99%, 750=12.11%, 1000=36.88%, 2000=45.70% lat (msec) : >=2000=1.45% cpu : usr=0.05%, sys=0.31%, ctx=2106, 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=247KiB/s (253kB/s), 61.7KiB/s-61.8KiB/s (63.2kB/s-63.3kB/s), io=40.0MiB (41.9MB), run=165771-165938msec 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=145913: Mon Aug 3 08:16:48 2026 read: IOPS=11, BW=47.5KiB/s (48.6kB/s)(5048KiB/106383msec) slat (usec): min=3564, max=59220, avg=14890.07, stdev=7882.75 clat (msec): min=25, max=813, avg=420.55, stdev=103.88 lat (msec): min=44, max=829, avg=435.45, stdev=104.36 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 271], 10.00th=[ 305], 20.00th=[ 342], | 30.00th=[ 363], 40.00th=[ 384], 50.00th=[ 409], 60.00th=[ 435], | 70.00th=[ 464], 80.00th=[ 502], 90.00th=[ 558], 95.00th=[ 600], | 99.00th=[ 718], 99.50th=[ 735], 99.90th=[ 810], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 125, per=25.10%, avg=47.18, stdev=22.04, samples=209 iops : min= 1, max= 31, avg=11.25, stdev= 5.54, samples=209 write: IOPS=12, BW=48.8KiB/s (49.0kB/s)(5192KiB/106383msec); 0 zone resets slat (usec): min=58, max=24436, avg=467.38, stdev=1268.76 clat (msec): min=293, max=1605, avg=885.26, stdev=240.82 lat (msec): min=293, max=1605, avg=885.73, stdev=240.82 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 523], 10.00th=[ 584], 20.00th=[ 667], | 30.00th=[ 743], 40.00th=[ 802], 50.00th=[ 869], 60.00th=[ 944], | 70.00th=[ 1020], 80.00th=[ 1099], 90.00th=[ 1217], 95.00th=[ 1301], | 99.00th=[ 1435], 99.50th=[ 1502], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 7, max= 102, per=24.72%, avg=48.45, stdev=21.37, samples=210 iops : min= 1, max= 25, avg=11.57, stdev= 5.36, samples=210 lat (msec) : 50=0.16%, 100=0.12%, 250=0.98%, 500=40.31%, 750=23.55% lat (msec) : 1000=18.79%, 2000=16.09% cpu : usr=0.12%, sys=0.88%, ctx=4987, 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=145914: Mon Aug 3 08:16:48 2026 read: IOPS=11, BW=46.9KiB/s (48.1kB/s)(4976KiB/105987msec) slat (usec): min=86, max=50311, avg=14799.39, stdev=7587.76 clat (msec): min=17, max=830, avg=421.64, stdev=104.77 lat (msec): min=17, max=838, avg=436.45, stdev=105.59 clat percentiles (msec): | 1.00th=[ 199], 5.00th=[ 271], 10.00th=[ 305], 20.00th=[ 347], | 30.00th=[ 368], 40.00th=[ 388], 50.00th=[ 414], 60.00th=[ 439], | 70.00th=[ 464], 80.00th=[ 506], 90.00th=[ 558], 95.00th=[ 609], | 99.00th=[ 684], 99.50th=[ 701], 99.90th=[ 810], 99.95th=[ 827], | 99.99th=[ 827] bw ( KiB/s): min= 7, max= 120, per=24.77%, avg=46.57, stdev=20.66, samples=209 iops : min= 1, max= 30, avg=11.10, stdev= 5.19, samples=209 write: IOPS=12, BW=49.7KiB/s (50.9kB/s)(5264KiB/105987msec); 0 zone resets slat (usec): min=55, max=18492, avg=450.52, stdev=1287.95 clat (msec): min=131, max=1604, avg=874.89, stdev=241.51 lat (msec): min=132, max=1605, avg=875.34, stdev=241.48 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 502], 10.00th=[ 584], 20.00th=[ 667], | 30.00th=[ 735], 40.00th=[ 785], 50.00th=[ 860], 60.00th=[ 927], | 70.00th=[ 1011], 80.00th=[ 1099], 90.00th=[ 1183], 95.00th=[ 1301], | 99.00th=[ 1452], 99.50th=[ 1469], 99.90th=[ 1519], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 7, max= 111, per=24.98%, avg=48.95, stdev=20.68, samples=210 iops : min= 1, max= 27, avg=11.69, stdev= 5.20, samples=210 lat (msec) : 20=0.04%, 50=0.12%, 100=0.20%, 250=1.41%, 500=39.02% lat (msec) : 750=24.65%, 1000=18.44%, 2000=16.13% cpu : usr=0.10%, sys=0.83%, ctx=4920, 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=145915: Mon Aug 3 08:16:48 2026 read: IOPS=11, BW=46.8KiB/s (47.0kB/s)(4984KiB/106405msec) slat (usec): min=3157, max=57608, avg=15176.55, stdev=7908.04 clat (msec): min=11, max=798, avg=424.86, stdev=104.03 lat (msec): min=24, max=828, avg=440.04, stdev=104.75 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 279], 10.00th=[ 305], 20.00th=[ 342], | 30.00th=[ 368], 40.00th=[ 388], 50.00th=[ 414], 60.00th=[ 439], | 70.00th=[ 472], 80.00th=[ 510], 90.00th=[ 567], 95.00th=[ 609], | 99.00th=[ 684], 99.50th=[ 709], 99.90th=[ 743], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 103, per=24.63%, avg=46.30, stdev=21.19, samples=211 iops : min= 1, max= 25, avg=11.03, stdev= 5.33, samples=211 write: IOPS=12, BW=49.4KiB/s (50.6kB/s)(5256KiB/106405msec); 0 zone resets slat (usec): min=52, max=14399, avg=429.05, stdev=1016.44 clat (msec): min=205, max=1517, avg=876.17, stdev=238.96 lat (msec): min=205, max=1517, avg=876.61, stdev=238.96 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 502], 10.00th=[ 575], 20.00th=[ 659], | 30.00th=[ 735], 40.00th=[ 802], 50.00th=[ 869], 60.00th=[ 944], | 70.00th=[ 1011], 80.00th=[ 1083], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1435], 99.50th=[ 1469], 99.90th=[ 1502], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 7, max= 104, per=24.79%, avg=48.58, stdev=20.19, samples=211 iops : min= 1, max= 26, avg=11.60, stdev= 5.08, samples=211 lat (msec) : 20=0.08%, 100=0.16%, 250=0.82%, 500=39.38%, 750=25.00% lat (msec) : 1000=18.28%, 2000=16.29% cpu : usr=0.10%, sys=0.81%, ctx=4950, 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=145916: Mon Aug 3 08:16:48 2026 read: IOPS=11, BW=47.9KiB/s (49.0kB/s)(5060KiB/105643msec) slat (usec): min=2978, max=54369, avg=14887.67, stdev=7656.79 clat (msec): min=14, max=839, avg=423.19, stdev=107.67 lat (msec): min=21, max=854, avg=438.09, stdev=108.23 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 279], 10.00th=[ 309], 20.00th=[ 342], | 30.00th=[ 363], 40.00th=[ 388], 50.00th=[ 409], 60.00th=[ 439], | 70.00th=[ 468], 80.00th=[ 502], 90.00th=[ 567], 95.00th=[ 617], | 99.00th=[ 709], 99.50th=[ 743], 99.90th=[ 827], 99.95th=[ 844], | 99.99th=[ 844] bw ( KiB/s): min= 7, max= 96, per=25.38%, avg=47.72, stdev=20.28, samples=208 iops : min= 1, max= 24, avg=11.38, stdev= 5.10, samples=208 write: IOPS=12, BW=49.0KiB/s (50.2kB/s)(5180KiB/105643msec); 0 zone resets slat (usec): min=58, max=14861, avg=474.99, stdev=1215.88 clat (msec): min=301, max=1623, avg=874.58, stdev=241.79 lat (msec): min=301, max=1638, avg=875.05, stdev=241.84 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 506], 10.00th=[ 567], 20.00th=[ 659], | 30.00th=[ 726], 40.00th=[ 785], 50.00th=[ 869], 60.00th=[ 944], | 70.00th=[ 1003], 80.00th=[ 1070], 90.00th=[ 1200], 95.00th=[ 1318], | 99.00th=[ 1435], 99.50th=[ 1519], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7, max= 111, per=24.56%, avg=48.13, stdev=20.02, samples=210 iops : min= 1, max= 27, avg=11.49, stdev= 5.05, samples=210 lat (msec) : 20=0.12%, 50=0.20%, 100=0.16%, 250=0.94%, 500=40.16% lat (msec) : 750=24.61%, 1000=18.24%, 2000=15.59% cpu : usr=0.11%, sys=0.88%, ctx=5093, 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=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=189KiB/s (193kB/s), 46.8KiB/s-47.9KiB/s (47.0kB/s-49.0kB/s), io=19.6MiB (20.5MB), run=105643-106405msec WRITE: bw=196KiB/s (201kB/s), 48.8KiB/s-49.7KiB/s (49.0kB/s-50.9kB/s), io=20.4MiB (21.4MB), run=105643-106405msec 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=145935: Mon Aug 3 08:16:57 2026 read: IOPS=1, BW=50.9MiB/s (53.4MB/s)(40.0MiB/786msec) slat (nsec): min=98062k, max=98062k, avg=98062147.00, stdev= 0.00 clat (nsec): min=665820k, max=665820k, avg=665820156.00, stdev= 0.00 lat (nsec): min=763887k, max=763887k, avg=763886932.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 667], 5.00th=[ 667], 10.00th=[ 667], 20.00th=[ 667], | 30.00th=[ 667], 40.00th=[ 667], 50.00th=[ 667], 60.00th=[ 667], | 70.00th=[ 667], 80.00th=[ 667], 90.00th=[ 667], 95.00th=[ 667], | 99.00th=[ 667], 99.50th=[ 667], 99.90th=[ 667], 99.95th=[ 667], | 99.99th=[ 667] lat (msec) : 750=100.00% cpu : usr=0.25%, sys=2.55%, ctx=45, 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=50.9MiB/s (53.4MB/s), 50.9MiB/s-50.9MiB/s (53.4MB/s-53.4MB/s), io=40.0MiB (41.9MB), run=786-786msec 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