== sanity test 398c: run fio to test AIO ================= 07:12:24 (1787569944) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.637891 s, 65.8 MB/s osc.lustre-OST0000-osc-ffff9d4844b69800.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=181397: Mon Aug 24 07:13:08 2026 write: IOPS=78, BW=312KiB/s (320kB/s)(10.0MiB/32773msec); 0 zone resets slat (usec): min=23, max=13188, avg=158.43, stdev=632.41 clat (msec): min=62, max=340, avg=203.82, stdev=44.08 lat (msec): min=62, max=340, avg=203.98, stdev=44.12 clat percentiles (msec): | 1.00th=[ 115], 5.00th=[ 140], 10.00th=[ 153], 20.00th=[ 167], | 30.00th=[ 180], 40.00th=[ 192], 50.00th=[ 199], 60.00th=[ 211], | 70.00th=[ 226], 80.00th=[ 245], 90.00th=[ 266], 95.00th=[ 279], | 99.00th=[ 317], 99.50th=[ 330], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 342] bw ( KiB/s): min= 152, max= 512, per=24.89%, avg=310.88, stdev=71.23, samples=65 iops : min= 38, max= 128, avg=77.28, stdev=17.84, samples=65 lat (msec) : 100=0.70%, 250=82.46%, 500=16.84% cpu : usr=0.13%, sys=0.61%, ctx=1071, majf=0, minf=8 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=181398: Mon Aug 24 07:13:08 2026 write: IOPS=78, BW=314KiB/s (321kB/s)(10.0MiB/32658msec); 0 zone resets slat (usec): min=31, max=15247, avg=232.34, stdev=826.32 clat (msec): min=15, max=342, avg=203.56, stdev=45.49 lat (msec): min=15, max=342, avg=203.79, stdev=45.49 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 136], 10.00th=[ 150], 20.00th=[ 167], | 30.00th=[ 180], 40.00th=[ 192], 50.00th=[ 201], 60.00th=[ 211], | 70.00th=[ 222], 80.00th=[ 241], 90.00th=[ 268], 95.00th=[ 288], | 99.00th=[ 326], 99.50th=[ 330], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 207, max= 510, per=25.05%, avg=312.83, stdev=61.62, samples=64 iops : min= 51, max= 127, avg=77.77, stdev=15.44, samples=64 lat (msec) : 20=0.04%, 50=0.16%, 100=0.74%, 250=83.12%, 500=15.94% cpu : usr=0.20%, sys=1.05%, ctx=2770, majf=0, minf=8 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=181399: Mon Aug 24 07:13:08 2026 write: IOPS=78, BW=313KiB/s (320kB/s)(10.0MiB/32723msec); 0 zone resets slat (usec): min=28, max=11579, avg=216.69, stdev=704.49 clat (msec): min=39, max=337, avg=203.61, stdev=43.89 lat (msec): min=39, max=338, avg=203.83, stdev=43.90 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 144], 10.00th=[ 155], 20.00th=[ 167], | 30.00th=[ 178], 40.00th=[ 188], 50.00th=[ 199], 60.00th=[ 209], | 70.00th=[ 224], 80.00th=[ 239], 90.00th=[ 268], 95.00th=[ 288], | 99.00th=[ 313], 99.50th=[ 326], 99.90th=[ 338], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 182, max= 455, per=24.92%, avg=311.20, stdev=57.66, samples=65 iops : min= 45, max= 113, avg=77.35, stdev=14.44, samples=65 lat (msec) : 50=0.04%, 100=0.70%, 250=84.80%, 500=14.45% cpu : usr=0.15%, sys=0.96%, ctx=2524, 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=181400: Mon Aug 24 07:13:08 2026 write: IOPS=78, BW=312KiB/s (320kB/s)(10.0MiB/32771msec); 0 zone resets slat (usec): min=28, max=18256, avg=212.19, stdev=779.98 clat (msec): min=38, max=335, avg=203.69, stdev=44.65 lat (msec): min=38, max=341, avg=203.91, stdev=44.67 clat percentiles (msec): | 1.00th=[ 113], 5.00th=[ 132], 10.00th=[ 150], 20.00th=[ 167], | 30.00th=[ 180], 40.00th=[ 192], 50.00th=[ 201], 60.00th=[ 211], | 70.00th=[ 222], 80.00th=[ 239], 90.00th=[ 264], 95.00th=[ 288], | 99.00th=[ 330], 99.50th=[ 334], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 135, max= 464, per=24.90%, avg=311.05, stdev=70.19, samples=65 iops : min= 33, max= 116, avg=77.34, stdev=17.52, samples=65 lat (msec) : 50=0.08%, 100=0.16%, 250=83.63%, 500=16.13% cpu : usr=0.16%, sys=0.89%, ctx=2501, 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 Run status group 0 (all jobs): WRITE: bw=1250KiB/s (1280kB/s), 312KiB/s-314KiB/s (320kB/s-321kB/s), io=40.0MiB (41.9MB), run=32658-32773msec 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=181417: Mon Aug 24 07:13:51 2026 read: IOPS=37, BW=148KiB/s (152kB/s)(5048KiB/34089msec) slat (usec): min=2911, max=58488, avg=14900.36, stdev=8685.68 clat (msec): min=21, max=381, avg=198.16, stdev=49.57 lat (msec): min=32, max=403, avg=213.07, stdev=52.07 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 127], 10.00th=[ 142], 20.00th=[ 159], | 30.00th=[ 174], 40.00th=[ 182], 50.00th=[ 192], 60.00th=[ 205], | 70.00th=[ 220], 80.00th=[ 236], 90.00th=[ 266], 95.00th=[ 292], | 99.00th=[ 334], 99.50th=[ 338], 99.90th=[ 359], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 62, max= 246, per=25.01%, avg=146.07, stdev=38.93, samples=67 iops : min= 15, max= 61, avg=36.01, stdev= 9.77, samples=67 write: IOPS=38, BW=152KiB/s (156kB/s)(5192KiB/34089msec); 0 zone resets slat (usec): min=28, max=22083, avg=252.47, stdev=1011.86 clat (msec): min=50, max=419, avg=209.09, stdev=53.88 lat (msec): min=50, max=420, avg=209.34, stdev=53.86 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 133], 10.00th=[ 148], 20.00th=[ 169], | 30.00th=[ 182], 40.00th=[ 192], 50.00th=[ 203], 60.00th=[ 213], | 70.00th=[ 226], 80.00th=[ 245], 90.00th=[ 279], 95.00th=[ 313], | 99.00th=[ 372], 99.50th=[ 384], 99.90th=[ 418], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 50, max= 272, per=24.86%, avg=151.16, stdev=39.54, samples=67 iops : min= 12, max= 68, avg=37.28, stdev= 9.93, samples=67 lat (msec) : 50=0.08%, 100=1.41%, 250=82.07%, 500=16.45% cpu : usr=0.24%, sys=1.69%, ctx=4303, 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=181418: Mon Aug 24 07:13:51 2026 read: IOPS=36, BW=145KiB/s (148kB/s)(4976KiB/34317msec) slat (usec): min=44, max=191001, avg=15317.94, stdev=13284.27 clat (msec): min=14, max=1022, avg=200.79, stdev=75.98 lat (msec): min=14, max=1028, avg=216.11, stdev=79.75 clat percentiles (msec): | 1.00th=[ 46], 5.00th=[ 115], 10.00th=[ 140], 20.00th=[ 159], | 30.00th=[ 171], 40.00th=[ 184], 50.00th=[ 194], 60.00th=[ 207], | 70.00th=[ 222], 80.00th=[ 239], 90.00th=[ 268], 95.00th=[ 292], | 99.00th=[ 368], 99.50th=[ 659], 99.90th=[ 969], 99.95th=[ 1020], | 99.99th=[ 1020] bw ( KiB/s): min= 16, max= 344, per=24.71%, avg=144.31, stdev=49.88, samples=68 iops : min= 4, max= 86, avg=35.57, stdev=12.47, samples=68 write: IOPS=38, BW=153KiB/s (157kB/s)(5264KiB/34317msec); 0 zone resets slat (usec): min=28, max=26431, avg=271.32, stdev=1243.62 clat (msec): min=51, max=1052, avg=211.63, stdev=74.29 lat (msec): min=51, max=1052, avg=211.91, stdev=74.28 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 131], 10.00th=[ 146], 20.00th=[ 169], | 30.00th=[ 182], 40.00th=[ 194], 50.00th=[ 205], 60.00th=[ 215], | 70.00th=[ 228], 80.00th=[ 247], 90.00th=[ 279], 95.00th=[ 313], | 99.00th=[ 363], 99.50th=[ 894], 99.90th=[ 927], 99.95th=[ 1053], | 99.99th=[ 1053] bw ( KiB/s): min= 8, max= 296, per=25.05%, avg=152.32, stdev=45.57, samples=68 iops : min= 2, max= 74, avg=37.60, stdev=11.41, samples=68 lat (msec) : 20=0.08%, 50=0.51%, 100=2.23%, 250=80.55%, 500=16.02% lat (msec) : 750=0.16%, 1000=0.39%, 2000=0.08% cpu : usr=0.21%, sys=1.54%, ctx=3900, 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=181419: Mon Aug 24 07:13:51 2026 read: IOPS=36, BW=146KiB/s (150kB/s)(4984KiB/34112msec) slat (usec): min=2762, max=62579, avg=15006.57, stdev=8709.72 clat (msec): min=43, max=409, avg=201.09, stdev=52.26 lat (msec): min=55, max=430, avg=216.11, stdev=54.42 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 125], 10.00th=[ 142], 20.00th=[ 159], | 30.00th=[ 174], 40.00th=[ 184], 50.00th=[ 194], 60.00th=[ 207], | 70.00th=[ 222], 80.00th=[ 243], 90.00th=[ 271], 95.00th=[ 300], | 99.00th=[ 342], 99.50th=[ 359], 99.90th=[ 384], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 63, max= 207, per=24.74%, avg=144.49, stdev=34.15, samples=67 iops : min= 15, max= 51, avg=35.63, stdev= 8.61, samples=67 write: IOPS=38, BW=154KiB/s (158kB/s)(5256KiB/34112msec); 0 zone resets slat (usec): min=29, max=25971, avg=258.79, stdev=1019.14 clat (msec): min=37, max=392, avg=207.03, stdev=51.92 lat (msec): min=38, max=392, avg=207.29, stdev=51.96 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 132], 10.00th=[ 148], 20.00th=[ 167], | 30.00th=[ 180], 40.00th=[ 192], 50.00th=[ 203], 60.00th=[ 213], | 70.00th=[ 228], 80.00th=[ 247], 90.00th=[ 275], 95.00th=[ 305], | 99.00th=[ 347], 99.50th=[ 368], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 71, max= 296, per=25.00%, avg=151.97, stdev=42.77, samples=67 iops : min= 17, max= 74, avg=37.49, stdev=10.70, samples=67 lat (msec) : 50=0.12%, 100=1.45%, 250=81.25%, 500=17.19% cpu : usr=0.22%, sys=1.73%, ctx=4139, 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=181420: Mon Aug 24 07:13:51 2026 read: IOPS=37, BW=149KiB/s (152kB/s)(5060KiB/34042msec) slat (usec): min=2674, max=78266, avg=15153.58, stdev=8712.76 clat (msec): min=35, max=372, avg=200.12, stdev=50.46 lat (msec): min=52, max=422, avg=215.28, stdev=52.58 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 125], 10.00th=[ 142], 20.00th=[ 161], | 30.00th=[ 174], 40.00th=[ 184], 50.00th=[ 197], 60.00th=[ 207], | 70.00th=[ 220], 80.00th=[ 236], 90.00th=[ 268], 95.00th=[ 292], | 99.00th=[ 347], 99.50th=[ 355], 99.90th=[ 368], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 78, max= 272, per=25.18%, avg=147.07, stdev=37.40, samples=67 iops : min= 19, max= 68, avg=36.27, stdev= 9.43, samples=67 write: IOPS=38, BW=152KiB/s (156kB/s)(5180KiB/34042msec); 0 zone resets slat (usec): min=34, max=12275, avg=255.68, stdev=785.53 clat (msec): min=49, max=390, avg=207.40, stdev=51.84 lat (msec): min=49, max=390, avg=207.66, stdev=51.88 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 136], 10.00th=[ 150], 20.00th=[ 167], | 30.00th=[ 180], 40.00th=[ 190], 50.00th=[ 203], 60.00th=[ 213], | 70.00th=[ 228], 80.00th=[ 247], 90.00th=[ 275], 95.00th=[ 309], | 99.00th=[ 355], 99.50th=[ 372], 99.90th=[ 388], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 70, max= 239, per=24.74%, avg=150.45, stdev=38.40, samples=67 iops : min= 17, max= 59, avg=37.12, stdev= 9.61, samples=67 lat (msec) : 50=0.12%, 100=1.29%, 250=81.91%, 500=16.68% cpu : usr=0.23%, sys=1.70%, ctx=4386, 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=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=585KiB/s (599kB/s), 145KiB/s-149KiB/s (148kB/s-152kB/s), io=19.6MiB (20.5MB), run=34042-34317msec WRITE: bw=609KiB/s (623kB/s), 152KiB/s-154KiB/s (156kB/s-158kB/s), io=20.4MiB (21.4MB), run=34042-34317msec 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=181429: Mon Aug 24 07:14:00 2026 read: IOPS=1, BW=61.7MiB/s (64.7MB/s)(40.0MiB/648msec) slat (nsec): min=36954k, max=36954k, avg=36953583.00, stdev= 0.00 clat (nsec): min=597273k, max=597273k, avg=597273223.00, stdev= 0.00 lat (nsec): min=634232k, max=634232k, avg=634231739.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 600], 5.00th=[ 600], 10.00th=[ 600], 20.00th=[ 600], | 30.00th=[ 600], 40.00th=[ 600], 50.00th=[ 600], 60.00th=[ 600], | 70.00th=[ 600], 80.00th=[ 600], 90.00th=[ 600], 95.00th=[ 600], | 99.00th=[ 600], 99.50th=[ 600], 99.90th=[ 600], 99.95th=[ 600], | 99.99th=[ 600] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.85%, ctx=11, majf=0, minf=7 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=61.7MiB/s (64.7MB/s), 61.7MiB/s-61.7MiB/s (64.7MB/s-64.7MB/s), io=40.0MiB (41.9MB), run=648-648msec 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