== sanity test 398c: run fio to test AIO ================= 13:14:10 (1788282850) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.149226 s, 281 MB/s osc.lustre-OST0000-osc-ffffa0292047f800.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=160382: Tue Sep 1 13:14:48 2026 write: IOPS=74, BW=300KiB/s (307kB/s)(10.0MiB/34140msec); 0 zone resets slat (usec): min=23, max=783, avg=131.58, stdev=77.98 clat (msec): min=73, max=478, avg=213.00, stdev=52.06 lat (msec): min=73, max=478, avg=213.13, stdev=52.07 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 140], 10.00th=[ 155], 20.00th=[ 171], | 30.00th=[ 186], 40.00th=[ 197], 50.00th=[ 209], 60.00th=[ 222], | 70.00th=[ 234], 80.00th=[ 249], 90.00th=[ 279], 95.00th=[ 305], | 99.00th=[ 380], 99.50th=[ 405], 99.90th=[ 451], 99.95th=[ 472], | 99.99th=[ 477] bw ( KiB/s): min= 128, max= 509, per=24.86%, avg=298.10, stdev=61.33, samples=67 iops : min= 32, max= 127, avg=74.52, stdev=15.32, samples=67 lat (msec) : 100=0.74%, 250=79.26%, 500=20.00% cpu : usr=0.14%, sys=0.81%, ctx=2978, 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=160383: Tue Sep 1 13:14:48 2026 write: IOPS=75, BW=301KiB/s (308kB/s)(10.0MiB/34046msec); 0 zone resets slat (usec): min=22, max=1425, avg=128.30, stdev=77.00 clat (msec): min=15, max=461, avg=212.52, stdev=54.02 lat (msec): min=15, max=461, avg=212.65, stdev=54.03 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 136], 10.00th=[ 153], 20.00th=[ 171], | 30.00th=[ 184], 40.00th=[ 197], 50.00th=[ 209], 60.00th=[ 220], | 70.00th=[ 232], 80.00th=[ 251], 90.00th=[ 279], 95.00th=[ 305], | 99.00th=[ 388], 99.50th=[ 418], 99.90th=[ 456], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 128, max= 547, per=25.02%, avg=299.99, stdev=66.61, samples=67 iops : min= 32, max= 136, avg=74.99, stdev=16.61, samples=67 lat (msec) : 20=0.04%, 50=0.08%, 100=1.56%, 250=78.40%, 500=19.92% cpu : usr=0.11%, sys=0.82%, ctx=2982, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=160384: Tue Sep 1 13:14:48 2026 write: IOPS=74, BW=300KiB/s (307kB/s)(10.0MiB/34140msec); 0 zone resets slat (usec): min=27, max=733, avg=128.83, stdev=74.67 clat (msec): min=60, max=486, avg=212.95, stdev=51.86 lat (msec): min=60, max=486, avg=213.08, stdev=51.87 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 140], 10.00th=[ 155], 20.00th=[ 171], | 30.00th=[ 186], 40.00th=[ 197], 50.00th=[ 209], 60.00th=[ 220], | 70.00th=[ 232], 80.00th=[ 249], 90.00th=[ 279], 95.00th=[ 305], | 99.00th=[ 376], 99.50th=[ 443], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 485] bw ( KiB/s): min= 160, max= 509, per=24.89%, avg=298.46, stdev=60.11, samples=67 iops : min= 40, max= 127, avg=74.61, stdev=15.02, samples=67 lat (msec) : 100=0.70%, 250=79.65%, 500=19.65% cpu : usr=0.14%, sys=0.79%, ctx=2956, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=160385: Tue Sep 1 13:14:48 2026 write: IOPS=75, BW=300KiB/s (307kB/s)(10.0MiB/34127msec); 0 zone resets slat (usec): min=30, max=724, avg=129.15, stdev=74.85 clat (msec): min=28, max=478, avg=212.94, stdev=53.32 lat (msec): min=28, max=478, avg=213.07, stdev=53.33 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 138], 10.00th=[ 155], 20.00th=[ 171], | 30.00th=[ 184], 40.00th=[ 197], 50.00th=[ 207], 60.00th=[ 220], | 70.00th=[ 234], 80.00th=[ 249], 90.00th=[ 284], 95.00th=[ 305], | 99.00th=[ 380], 99.50th=[ 409], 99.90th=[ 477], 99.95th=[ 477], | 99.99th=[ 477] bw ( KiB/s): min= 128, max= 515, per=24.96%, avg=299.27, stdev=60.62, samples=67 iops : min= 32, max= 128, avg=74.81, stdev=15.12, samples=67 lat (msec) : 50=0.04%, 100=1.02%, 250=79.26%, 500=19.69% cpu : usr=0.13%, sys=0.81%, ctx=3023, 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=1200KiB/s (1229kB/s), 300KiB/s-301KiB/s (307kB/s-308kB/s), io=40.0MiB (41.9MB), run=34046-34140msec 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=160399: Tue Sep 1 13:15:12 2026 read: IOPS=59, BW=236KiB/s (242kB/s)(5048KiB/21382msec) slat (usec): min=1077, max=9217, avg=2782.76, stdev=1049.78 clat (msec): min=3, max=170, avg=84.53, stdev=16.98 lat (msec): min=5, max=173, avg=87.32, stdev=17.17 clat percentiles (msec): | 1.00th=[ 42], 5.00th=[ 60], 10.00th=[ 66], 20.00th=[ 72], | 30.00th=[ 77], 40.00th=[ 81], 50.00th=[ 85], 60.00th=[ 89], | 70.00th=[ 94], 80.00th=[ 99], 90.00th=[ 105], 95.00th=[ 111], | 99.00th=[ 123], 99.50th=[ 128], 99.90th=[ 167], 99.95th=[ 171], | 99.99th=[ 171] bw ( KiB/s): min= 152, max= 336, per=25.27%, avg=236.24, stdev=42.90, samples=42 iops : min= 38, max= 84, avg=59.02, stdev=10.74, samples=42 write: IOPS=60, BW=243KiB/s (249kB/s)(5192KiB/21382msec); 0 zone resets slat (usec): min=25, max=770, avg=106.30, stdev=62.05 clat (msec): min=64, max=289, avg=177.52, stdev=36.55 lat (msec): min=64, max=290, avg=177.63, stdev=36.54 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 118], 10.00th=[ 131], 20.00th=[ 148], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 186], | 70.00th=[ 194], 80.00th=[ 211], 90.00th=[ 226], 95.00th=[ 243], | 99.00th=[ 259], 99.50th=[ 264], 99.90th=[ 288], 99.95th=[ 292], | 99.99th=[ 292] bw ( KiB/s): min= 136, max= 328, per=24.93%, avg=242.60, stdev=38.57, samples=42 iops : min= 34, max= 82, avg=60.62, stdev= 9.61, samples=42 lat (msec) : 4=0.08%, 10=0.04%, 20=0.23%, 50=0.43%, 100=40.27% lat (msec) : 250=57.42%, 500=1.52% cpu : usr=0.13%, sys=1.57%, ctx=4933, 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=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=160400: Tue Sep 1 13:15:12 2026 read: IOPS=57, BW=232KiB/s (238kB/s)(4976KiB/21454msec) slat (usec): min=1019, max=7820, avg=2769.44, stdev=1028.46 clat (msec): min=4, max=132, avg=84.25, stdev=15.78 lat (msec): min=7, max=135, avg=87.02, stdev=15.94 clat percentiles (msec): | 1.00th=[ 47], 5.00th=[ 61], 10.00th=[ 66], 20.00th=[ 72], | 30.00th=[ 77], 40.00th=[ 81], 50.00th=[ 86], 60.00th=[ 89], | 70.00th=[ 92], 80.00th=[ 97], 90.00th=[ 104], 95.00th=[ 110], | 99.00th=[ 121], 99.50th=[ 124], 99.90th=[ 128], 99.95th=[ 133], | 99.99th=[ 133] bw ( KiB/s): min= 128, max= 312, per=24.68%, avg=230.79, stdev=45.88, samples=42 iops : min= 32, max= 78, avg=57.67, stdev=11.47, samples=42 write: IOPS=61, BW=245KiB/s (251kB/s)(5264KiB/21454msec); 0 zone resets slat (usec): min=31, max=846, avg=108.59, stdev=66.09 clat (msec): min=46, max=276, avg=177.44, stdev=36.53 lat (msec): min=46, max=276, avg=177.55, stdev=36.53 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 120], 10.00th=[ 131], 20.00th=[ 146], | 30.00th=[ 159], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 186], | 70.00th=[ 194], 80.00th=[ 211], 90.00th=[ 228], 95.00th=[ 243], | 99.00th=[ 264], 99.50th=[ 271], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 184, max= 320, per=25.06%, avg=243.81, stdev=31.75, samples=42 iops : min= 46, max= 80, avg=60.93, stdev= 7.90, samples=42 lat (msec) : 10=0.16%, 20=0.16%, 50=0.43%, 100=41.37%, 250=56.45% lat (msec) : 500=1.45% cpu : usr=0.17%, sys=1.51%, ctx=5178, 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=160401: Tue Sep 1 13:15:12 2026 read: IOPS=58, BW=232KiB/s (238kB/s)(4984KiB/21443msec) slat (usec): min=1061, max=68860, avg=2847.96, stdev=2151.97 clat (msec): min=3, max=155, avg=84.57, stdev=16.94 lat (msec): min=6, max=158, avg=87.42, stdev=16.99 clat percentiles (msec): | 1.00th=[ 35], 5.00th=[ 61], 10.00th=[ 66], 20.00th=[ 72], | 30.00th=[ 78], 40.00th=[ 81], 50.00th=[ 85], 60.00th=[ 89], | 70.00th=[ 93], 80.00th=[ 97], 90.00th=[ 104], 95.00th=[ 112], | 99.00th=[ 125], 99.50th=[ 133], 99.90th=[ 153], 99.95th=[ 155], | 99.99th=[ 155] bw ( KiB/s): min= 136, max= 368, per=24.86%, avg=232.43, stdev=57.15, samples=42 iops : min= 34, max= 92, avg=58.07, stdev=14.29, samples=42 write: IOPS=61, BW=245KiB/s (251kB/s)(5256KiB/21443msec); 0 zone resets slat (usec): min=26, max=2551, avg=104.50, stdev=86.17 clat (msec): min=74, max=276, avg=177.10, stdev=36.83 lat (msec): min=74, max=276, avg=177.20, stdev=36.83 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 121], 10.00th=[ 129], 20.00th=[ 144], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 188], | 70.00th=[ 197], 80.00th=[ 209], 90.00th=[ 228], 95.00th=[ 241], | 99.00th=[ 259], 99.50th=[ 266], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 160, max= 296, per=24.95%, avg=242.79, stdev=33.27, samples=42 iops : min= 40, max= 74, avg=60.67, stdev= 8.31, samples=42 lat (msec) : 4=0.04%, 10=0.16%, 20=0.27%, 50=0.23%, 100=41.41% lat (msec) : 250=56.76%, 500=1.13% cpu : usr=0.17%, sys=1.53%, ctx=5150, 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=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=160402: Tue Sep 1 13:15:12 2026 read: IOPS=59, BW=239KiB/s (244kB/s)(5060KiB/21194msec) slat (usec): min=44, max=13475, avg=2745.60, stdev=1106.59 clat (msec): min=5, max=208, avg=84.24, stdev=17.04 lat (msec): min=8, max=211, avg=86.99, stdev=17.22 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 61], 10.00th=[ 66], 20.00th=[ 72], | 30.00th=[ 77], 40.00th=[ 81], 50.00th=[ 85], 60.00th=[ 89], | 70.00th=[ 93], 80.00th=[ 97], 90.00th=[ 104], 95.00th=[ 109], | 99.00th=[ 121], 99.50th=[ 124], 99.90th=[ 205], 99.95th=[ 209], | 99.99th=[ 209] bw ( KiB/s): min= 144, max= 336, per=25.47%, avg=238.17, stdev=47.21, samples=42 iops : min= 36, max= 84, avg=59.52, stdev=11.78, samples=42 write: IOPS=61, BW=244KiB/s (250kB/s)(5180KiB/21194msec); 0 zone resets slat (usec): min=35, max=2913, avg=110.49, stdev=118.22 clat (msec): min=50, max=284, avg=176.48, stdev=38.75 lat (msec): min=51, max=284, avg=176.59, stdev=38.74 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 114], 10.00th=[ 127], 20.00th=[ 144], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 176], 60.00th=[ 186], | 70.00th=[ 197], 80.00th=[ 209], 90.00th=[ 228], 95.00th=[ 245], | 99.00th=[ 268], 99.50th=[ 271], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 168, max= 304, per=25.00%, avg=243.24, stdev=36.05, samples=42 iops : min= 42, max= 76, avg=60.79, stdev= 8.99, samples=42 lat (msec) : 10=0.08%, 20=0.23%, 50=0.55%, 100=42.27%, 250=55.27% lat (msec) : 500=1.60% cpu : usr=0.19%, sys=1.52%, ctx=5266, 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=935KiB/s (958kB/s), 232KiB/s-239KiB/s (238kB/s-244kB/s), io=19.6MiB (20.5MB), run=21194-21454msec WRITE: bw=974KiB/s (997kB/s), 243KiB/s-245KiB/s (249kB/s-251kB/s), io=20.4MiB (21.4MB), run=21194-21454msec 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=160408: Tue Sep 1 13:15:16 2026 read: IOPS=8, BW=339MiB/s (355MB/s)(40.0MiB/118msec) slat (nsec): min=10749k, max=10749k, avg=10748741.00, stdev= 0.00 clat (nsec): min=100895k, max=100895k, avg=100895301.00, stdev= 0.00 lat (nsec): min=111647k, max=111647k, avg=111646967.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 102], 10.00th=[ 102], 20.00th=[ 102], | 30.00th=[ 102], 40.00th=[ 102], 50.00th=[ 102], 60.00th=[ 102], | 70.00th=[ 102], 80.00th=[ 102], 90.00th=[ 102], 95.00th=[ 102], | 99.00th=[ 102], 99.50th=[ 102], 99.90th=[ 102], 99.95th=[ 102], | 99.99th=[ 102] lat (msec) : 250=100.00% cpu : usr=0.85%, sys=7.69%, ctx=8, 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=339MiB/s (355MB/s), 339MiB/s-339MiB/s (355MB/s-355MB/s), io=40.0MiB (41.9MB), run=118-118msec 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