== sanity test 398c: run fio to test AIO ================= 16:09:15 (1788206955) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.682321 s, 61.5 MB/s osc.lustre-OST0000-osc-ffff8d49c7e18800.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=179728: Mon Aug 31 16:10:00 2026 write: IOPS=82, BW=329KiB/s (337kB/s)(10.0MiB/31144msec); 0 zone resets slat (usec): min=27, max=19603, avg=216.51, stdev=901.56 clat (msec): min=28, max=351, avg=193.77, stdev=47.66 lat (msec): min=28, max=351, avg=193.98, stdev=47.64 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 121], 10.00th=[ 131], 20.00th=[ 155], | 30.00th=[ 171], 40.00th=[ 182], 50.00th=[ 190], 60.00th=[ 201], | 70.00th=[ 215], 80.00th=[ 230], 90.00th=[ 257], 95.00th=[ 284], | 99.00th=[ 338], 99.50th=[ 347], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 351] bw ( KiB/s): min= 143, max= 512, per=24.95%, avg=328.08, stdev=78.20, samples=61 iops : min= 35, max= 128, avg=81.61, stdev=19.58, samples=61 lat (msec) : 50=0.12%, 100=0.43%, 250=87.77%, 500=11.68% cpu : usr=0.16%, sys=0.93%, ctx=2783, 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=179729: Mon Aug 31 16:10:00 2026 write: IOPS=82, BW=329KiB/s (337kB/s)(10.0MiB/31139msec); 0 zone resets slat (usec): min=28, max=20934, avg=209.84, stdev=853.61 clat (msec): min=26, max=388, avg=193.54, stdev=47.18 lat (msec): min=27, max=388, avg=193.76, stdev=47.18 clat percentiles (msec): | 1.00th=[ 104], 5.00th=[ 122], 10.00th=[ 136], 20.00th=[ 155], | 30.00th=[ 167], 40.00th=[ 180], 50.00th=[ 190], 60.00th=[ 203], | 70.00th=[ 215], 80.00th=[ 228], 90.00th=[ 253], 95.00th=[ 279], | 99.00th=[ 326], 99.50th=[ 347], 99.90th=[ 376], 99.95th=[ 376], | 99.99th=[ 388] bw ( KiB/s): min= 191, max= 581, per=24.85%, avg=326.82, stdev=67.12, samples=61 iops : min= 47, max= 145, avg=81.31, stdev=16.83, samples=61 lat (msec) : 50=0.12%, 100=0.27%, 250=88.55%, 500=11.05% cpu : usr=0.20%, sys=0.92%, ctx=2717, 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=179730: Mon Aug 31 16:10:00 2026 write: IOPS=82, BW=329KiB/s (337kB/s)(10.0MiB/31090msec); 0 zone resets slat (usec): min=29, max=13417, avg=205.51, stdev=717.23 clat (msec): min=22, max=392, avg=193.90, stdev=48.03 lat (msec): min=23, max=392, avg=194.11, stdev=47.99 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 123], 10.00th=[ 134], 20.00th=[ 155], | 30.00th=[ 169], 40.00th=[ 182], 50.00th=[ 192], 60.00th=[ 201], | 70.00th=[ 213], 80.00th=[ 230], 90.00th=[ 255], 95.00th=[ 279], | 99.00th=[ 342], 99.50th=[ 355], 99.90th=[ 393], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 175, max= 573, per=24.98%, avg=328.49, stdev=74.75, samples=61 iops : min= 43, max= 143, avg=81.72, stdev=18.74, samples=61 lat (msec) : 50=0.12%, 100=0.90%, 250=87.85%, 500=11.13% cpu : usr=0.13%, sys=0.85%, ctx=2658, 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=179731: Mon Aug 31 16:10:00 2026 write: IOPS=82, BW=329KiB/s (337kB/s)(10.0MiB/31140msec); 0 zone resets slat (usec): min=28, max=13489, avg=187.82, stdev=674.76 clat (msec): min=18, max=378, avg=193.73, stdev=48.39 lat (msec): min=19, max=378, avg=193.92, stdev=48.37 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 118], 10.00th=[ 132], 20.00th=[ 153], | 30.00th=[ 167], 40.00th=[ 182], 50.00th=[ 192], 60.00th=[ 203], | 70.00th=[ 213], 80.00th=[ 230], 90.00th=[ 257], 95.00th=[ 275], | 99.00th=[ 347], 99.50th=[ 359], 99.90th=[ 359], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 222, max= 512, per=24.95%, avg=328.15, stdev=73.56, samples=61 iops : min= 55, max= 128, avg=81.62, stdev=18.42, samples=61 lat (msec) : 20=0.04%, 50=0.08%, 100=1.29%, 250=86.76%, 500=11.84% cpu : usr=0.16%, sys=0.76%, ctx=2673, 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=1315KiB/s (1347kB/s), 329KiB/s-329KiB/s (337kB/s-337kB/s), io=40.0MiB (41.9MB), run=31090-31144msec 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=179746: Mon Aug 31 16:10:44 2026 read: IOPS=35, BW=144KiB/s (147kB/s)(5048KiB/35163msec) slat (usec): min=3022, max=80472, avg=15461.07, stdev=9224.21 clat (msec): min=97, max=417, avg=205.36, stdev=52.71 lat (msec): min=102, max=436, avg=220.83, stdev=54.97 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 133], 10.00th=[ 146], 20.00th=[ 161], | 30.00th=[ 174], 40.00th=[ 186], 50.00th=[ 201], 60.00th=[ 213], | 70.00th=[ 228], 80.00th=[ 247], 90.00th=[ 275], 95.00th=[ 300], | 99.00th=[ 368], 99.50th=[ 376], 99.90th=[ 418], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 55, max= 224, per=24.99%, avg=142.46, stdev=36.10, samples=69 iops : min= 13, max= 56, avg=35.17, stdev= 9.07, samples=69 write: IOPS=36, BW=148KiB/s (151kB/s)(5192KiB/35163msec); 0 zone resets slat (usec): min=35, max=9730, avg=206.75, stdev=615.37 clat (msec): min=97, max=420, avg=214.80, stdev=50.83 lat (msec): min=97, max=420, avg=215.00, stdev=50.84 clat percentiles (msec): | 1.00th=[ 130], 5.00th=[ 144], 10.00th=[ 157], 20.00th=[ 171], | 30.00th=[ 184], 40.00th=[ 199], 50.00th=[ 209], 60.00th=[ 220], | 70.00th=[ 234], 80.00th=[ 253], 90.00th=[ 279], 95.00th=[ 317], | 99.00th=[ 363], 99.50th=[ 380], 99.90th=[ 414], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 48, max= 240, per=24.82%, avg=147.17, stdev=38.19, samples=69 iops : min= 12, max= 60, avg=36.36, stdev= 9.60, samples=69 lat (msec) : 100=0.12%, 250=80.70%, 500=19.18% cpu : usr=0.25%, sys=1.70%, ctx=4608, 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=179747: Mon Aug 31 16:10:44 2026 read: IOPS=35, BW=142KiB/s (145kB/s)(4976KiB/35116msec) slat (usec): min=3462, max=70080, avg=15473.72, stdev=8949.41 clat (msec): min=60, max=451, avg=205.84, stdev=52.08 lat (msec): min=73, max=470, avg=221.32, stdev=53.75 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 134], 10.00th=[ 148], 20.00th=[ 165], | 30.00th=[ 176], 40.00th=[ 186], 50.00th=[ 199], 60.00th=[ 209], | 70.00th=[ 226], 80.00th=[ 247], 90.00th=[ 275], 95.00th=[ 305], | 99.00th=[ 363], 99.50th=[ 376], 99.90th=[ 451], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 71, max= 207, per=24.71%, avg=140.83, stdev=32.46, samples=69 iops : min= 17, max= 51, avg=34.77, stdev= 8.17, samples=69 write: IOPS=37, BW=150KiB/s (154kB/s)(5264KiB/35116msec); 0 zone resets slat (usec): min=32, max=7103, avg=202.88, stdev=516.24 clat (msec): min=103, max=429, avg=215.39, stdev=52.08 lat (msec): min=103, max=429, avg=215.60, stdev=52.09 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 146], 10.00th=[ 157], 20.00th=[ 174], | 30.00th=[ 186], 40.00th=[ 197], 50.00th=[ 209], 60.00th=[ 222], | 70.00th=[ 232], 80.00th=[ 253], 90.00th=[ 284], 95.00th=[ 317], | 99.00th=[ 376], 99.50th=[ 393], 99.90th=[ 422], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 79, max= 280, per=25.24%, avg=149.68, stdev=40.38, samples=69 iops : min= 19, max= 70, avg=36.96, stdev=10.17, samples=69 lat (msec) : 100=0.20%, 250=80.00%, 500=19.80% cpu : usr=0.23%, sys=1.52%, ctx=4323, 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=179748: Mon Aug 31 16:10:44 2026 read: IOPS=35, BW=142KiB/s (145kB/s)(4984KiB/35173msec) slat (usec): min=36, max=198602, avg=15261.99, stdev=9980.37 clat (msec): min=31, max=452, avg=207.79, stdev=55.39 lat (msec): min=35, max=456, avg=223.06, stdev=56.81 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 136], 10.00th=[ 148], 20.00th=[ 163], | 30.00th=[ 176], 40.00th=[ 188], 50.00th=[ 199], 60.00th=[ 211], | 70.00th=[ 228], 80.00th=[ 247], 90.00th=[ 284], 95.00th=[ 313], | 99.00th=[ 388], 99.50th=[ 405], 99.90th=[ 443], 99.95th=[ 451], | 99.99th=[ 451] bw ( KiB/s): min= 71, max= 222, per=24.74%, avg=141.00, stdev=35.89, samples=69 iops : min= 17, max= 55, avg=34.80, stdev= 9.04, samples=69 write: IOPS=37, BW=149KiB/s (153kB/s)(5256KiB/35173msec); 0 zone resets slat (usec): min=35, max=15175, avg=235.84, stdev=864.12 clat (msec): min=47, max=444, avg=216.04, stdev=51.47 lat (msec): min=48, max=444, avg=216.28, stdev=51.45 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 146], 10.00th=[ 159], 20.00th=[ 174], | 30.00th=[ 186], 40.00th=[ 199], 50.00th=[ 209], 60.00th=[ 224], | 70.00th=[ 236], 80.00th=[ 257], 90.00th=[ 284], 95.00th=[ 313], | 99.00th=[ 368], 99.50th=[ 380], 99.90th=[ 409], 99.95th=[ 443], | 99.99th=[ 443] bw ( KiB/s): min= 63, max= 254, per=25.01%, avg=148.33, stdev=38.17, samples=69 iops : min= 15, max= 63, avg=36.64, stdev= 9.63, samples=69 lat (msec) : 50=0.16%, 100=0.23%, 250=78.67%, 500=20.94% cpu : usr=0.23%, sys=1.61%, ctx=4449, 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=179749: Mon Aug 31 16:10:44 2026 read: IOPS=36, BW=144KiB/s (148kB/s)(5060KiB/35082msec) slat (usec): min=3165, max=73648, avg=15191.05, stdev=8490.69 clat (msec): min=54, max=428, avg=207.10, stdev=52.44 lat (msec): min=80, max=437, avg=222.30, stdev=53.92 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 136], 10.00th=[ 146], 20.00th=[ 165], | 30.00th=[ 176], 40.00th=[ 188], 50.00th=[ 199], 60.00th=[ 213], | 70.00th=[ 228], 80.00th=[ 245], 90.00th=[ 279], 95.00th=[ 309], | 99.00th=[ 359], 99.50th=[ 372], 99.90th=[ 418], 99.95th=[ 430], | 99.99th=[ 430] bw ( KiB/s): min= 38, max= 214, per=25.26%, avg=144.00, stdev=33.55, samples=69 iops : min= 9, max= 53, avg=35.55, stdev= 8.47, samples=69 write: IOPS=36, BW=148KiB/s (151kB/s)(5180KiB/35082msec); 0 zone resets slat (usec): min=32, max=22399, avg=259.43, stdev=913.53 clat (msec): min=100, max=390, avg=213.74, stdev=49.59 lat (msec): min=100, max=390, avg=214.00, stdev=49.59 clat percentiles (msec): | 1.00th=[ 121], 5.00th=[ 144], 10.00th=[ 157], 20.00th=[ 171], | 30.00th=[ 184], 40.00th=[ 197], 50.00th=[ 209], 60.00th=[ 222], | 70.00th=[ 232], 80.00th=[ 249], 90.00th=[ 279], 95.00th=[ 309], | 99.00th=[ 363], 99.50th=[ 363], 99.90th=[ 384], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 71, max= 246, per=24.76%, avg=146.81, stdev=34.34, samples=69 iops : min= 17, max= 61, avg=36.25, stdev= 8.66, samples=69 lat (msec) : 100=0.04%, 250=80.74%, 500=19.22% cpu : usr=0.25%, sys=1.73%, ctx=4572, 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=571KiB/s (584kB/s), 142KiB/s-144KiB/s (145kB/s-148kB/s), io=19.6MiB (20.5MB), run=35082-35173msec WRITE: bw=594KiB/s (608kB/s), 148KiB/s-150KiB/s (151kB/s-154kB/s), io=20.4MiB (21.4MB), run=35082-35173msec 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=179759: Mon Aug 31 16:10:56 2026 read: IOPS=1, BW=77.8MiB/s (81.6MB/s)(40.0MiB/514msec) slat (nsec): min=26948k, max=26948k, avg=26948253.00, stdev= 0.00 clat (nsec): min=470663k, max=470663k, avg=470663136.00, stdev= 0.00 lat (nsec): min=497616k, max=497616k, avg=497616322.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 472], 10.00th=[ 472], 20.00th=[ 472], | 30.00th=[ 472], 40.00th=[ 472], 50.00th=[ 472], 60.00th=[ 472], | 70.00th=[ 472], 80.00th=[ 472], 90.00th=[ 472], 95.00th=[ 472], | 99.00th=[ 472], 99.50th=[ 472], 99.90th=[ 472], 99.95th=[ 472], | 99.99th=[ 472] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.73%, 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=77.8MiB/s (81.6MB/s), 77.8MiB/s-77.8MiB/s (81.6MB/s-81.6MB/s), io=40.0MiB (41.9MB), run=514-514msec 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