== sanity test 398c: run fio to test AIO ================= 11:55:03 (1787586903) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.684104 s, 61.3 MB/s osc.lustre-OST0000-osc-ffff88a3085b1000.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=180389: Mon Aug 24 11:55:50 2026 write: IOPS=75, BW=302KiB/s (309kB/s)(10.0MiB/33910msec); 0 zone resets slat (usec): min=29, max=21342, avg=229.86, stdev=949.17 clat (msec): min=26, max=434, avg=210.52, stdev=47.95 lat (msec): min=26, max=434, avg=210.76, stdev=47.95 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 140], 10.00th=[ 153], 20.00th=[ 171], | 30.00th=[ 184], 40.00th=[ 197], 50.00th=[ 207], 60.00th=[ 220], | 70.00th=[ 230], 80.00th=[ 247], 90.00th=[ 271], 95.00th=[ 292], | 99.00th=[ 372], 99.50th=[ 388], 99.90th=[ 422], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 174, max= 512, per=24.99%, avg=301.34, stdev=66.11, samples=67 iops : min= 43, max= 128, avg=74.91, stdev=16.62, samples=67 lat (msec) : 50=0.08%, 250=82.54%, 500=17.38% cpu : usr=0.16%, sys=0.85%, ctx=1790, 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=180390: Mon Aug 24 11:55:50 2026 write: IOPS=75, BW=302KiB/s (309kB/s)(10.0MiB/33948msec); 0 zone resets slat (usec): min=28, max=20958, avg=227.37, stdev=964.00 clat (msec): min=49, max=355, avg=210.59, stdev=45.64 lat (msec): min=49, max=355, avg=210.82, stdev=45.61 clat percentiles (msec): | 1.00th=[ 120], 5.00th=[ 142], 10.00th=[ 157], 20.00th=[ 174], | 30.00th=[ 186], 40.00th=[ 197], 50.00th=[ 205], 60.00th=[ 218], | 70.00th=[ 230], 80.00th=[ 245], 90.00th=[ 275], 95.00th=[ 288], | 99.00th=[ 342], 99.50th=[ 342], 99.90th=[ 355], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 168, max= 512, per=24.84%, avg=299.61, stdev=64.90, samples=67 iops : min= 42, max= 128, avg=74.49, stdev=16.30, samples=67 lat (msec) : 50=0.04%, 100=0.39%, 250=82.42%, 500=17.15% cpu : usr=0.14%, sys=0.81%, ctx=1701, 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=180391: Mon Aug 24 11:55:50 2026 write: IOPS=75, BW=303KiB/s (310kB/s)(10.0MiB/33817msec); 0 zone resets slat (usec): min=25, max=28508, avg=214.94, stdev=934.91 clat (msec): min=28, max=528, avg=210.09, stdev=48.54 lat (msec): min=29, max=528, avg=210.31, stdev=48.55 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 146], 10.00th=[ 157], 20.00th=[ 171], | 30.00th=[ 184], 40.00th=[ 194], 50.00th=[ 203], 60.00th=[ 215], | 70.00th=[ 228], 80.00th=[ 247], 90.00th=[ 271], 95.00th=[ 296], | 99.00th=[ 347], 99.50th=[ 380], 99.90th=[ 510], 99.95th=[ 510], | 99.99th=[ 531] bw ( KiB/s): min= 159, max= 444, per=24.97%, avg=301.12, stdev=63.71, samples=67 iops : min= 39, max= 111, avg=74.85, stdev=15.97, samples=67 lat (msec) : 50=0.04%, 100=0.62%, 250=81.41%, 500=17.73%, 750=0.20% cpu : usr=0.15%, sys=0.93%, ctx=1735, 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=180392: Mon Aug 24 11:55:50 2026 write: IOPS=75, BW=303KiB/s (311kB/s)(10.0MiB/33746msec); 0 zone resets slat (usec): min=29, max=32548, avg=339.13, stdev=1430.93 clat (msec): min=28, max=537, avg=210.34, stdev=50.24 lat (msec): min=29, max=537, avg=210.69, stdev=50.22 clat percentiles (msec): | 1.00th=[ 122], 5.00th=[ 144], 10.00th=[ 155], 20.00th=[ 171], | 30.00th=[ 184], 40.00th=[ 194], 50.00th=[ 203], 60.00th=[ 215], | 70.00th=[ 228], 80.00th=[ 247], 90.00th=[ 275], 95.00th=[ 292], | 99.00th=[ 368], 99.50th=[ 409], 99.90th=[ 542], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 166, max= 431, per=25.25%, avg=304.52, stdev=59.98, samples=66 iops : min= 41, max= 107, avg=75.71, stdev=15.06, samples=66 lat (msec) : 50=0.20%, 100=0.43%, 250=80.90%, 500=18.24%, 750=0.23% cpu : usr=0.22%, sys=1.12%, ctx=2869, 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=1207KiB/s (1236kB/s), 302KiB/s-303KiB/s (309kB/s-311kB/s), io=40.0MiB (41.9MB), run=33746-33948msec 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=180407: Mon Aug 24 11:56:41 2026 read: IOPS=31, BW=128KiB/s (131kB/s)(5048KiB/39583msec) slat (usec): min=2925, max=63788, avg=17390.17, stdev=9537.82 clat (msec): min=95, max=464, avg=232.61, stdev=54.75 lat (msec): min=126, max=474, avg=250.01, stdev=56.49 clat percentiles (msec): | 1.00th=[ 138], 5.00th=[ 155], 10.00th=[ 169], 20.00th=[ 186], | 30.00th=[ 199], 40.00th=[ 211], 50.00th=[ 226], 60.00th=[ 243], | 70.00th=[ 259], 80.00th=[ 275], 90.00th=[ 305], 95.00th=[ 334], | 99.00th=[ 388], 99.50th=[ 397], 99.90th=[ 435], 99.95th=[ 464], | 99.99th=[ 464] bw ( KiB/s): min= 63, max= 223, per=25.07%, avg=126.85, stdev=29.52, samples=78 iops : min= 15, max= 55, avg=31.18, stdev= 7.42, samples=78 write: IOPS=32, BW=131KiB/s (134kB/s)(5192KiB/39583msec); 0 zone resets slat (usec): min=34, max=17194, avg=301.09, stdev=957.96 clat (msec): min=58, max=444, avg=241.00, stdev=49.85 lat (msec): min=58, max=444, avg=241.30, stdev=49.83 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 169], 10.00th=[ 182], 20.00th=[ 199], | 30.00th=[ 213], 40.00th=[ 226], 50.00th=[ 239], 60.00th=[ 249], | 70.00th=[ 262], 80.00th=[ 279], 90.00th=[ 305], 95.00th=[ 330], | 99.00th=[ 397], 99.50th=[ 414], 99.90th=[ 443], 99.95th=[ 447], | 99.99th=[ 447] bw ( KiB/s): min= 55, max= 199, per=24.85%, avg=130.95, stdev=32.06, samples=78 iops : min= 13, max= 49, avg=32.22, stdev= 8.02, samples=78 lat (msec) : 100=0.08%, 250=63.24%, 500=36.68% cpu : usr=0.23%, sys=1.58%, ctx=4338, 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=180408: Mon Aug 24 11:56:41 2026 read: IOPS=31, BW=126KiB/s (129kB/s)(4976KiB/39490msec) slat (usec): min=55, max=265879, avg=17758.07, stdev=13148.03 clat (msec): min=36, max=699, avg=234.43, stdev=62.53 lat (msec): min=36, max=725, avg=252.20, stdev=65.74 clat percentiles (msec): | 1.00th=[ 128], 5.00th=[ 155], 10.00th=[ 169], 20.00th=[ 186], | 30.00th=[ 199], 40.00th=[ 211], 50.00th=[ 226], 60.00th=[ 241], | 70.00th=[ 259], 80.00th=[ 279], 90.00th=[ 309], 95.00th=[ 330], | 99.00th=[ 405], 99.50th=[ 464], 99.90th=[ 693], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 47, max= 199, per=24.67%, avg=124.83, stdev=31.43, samples=78 iops : min= 11, max= 49, avg=30.68, stdev= 7.90, samples=78 write: IOPS=33, BW=133KiB/s (136kB/s)(5264KiB/39490msec); 0 zone resets slat (usec): min=30, max=25217, avg=302.09, stdev=1193.37 clat (msec): min=36, max=716, avg=240.97, stdev=59.65 lat (msec): min=37, max=716, avg=241.27, stdev=59.59 clat percentiles (msec): | 1.00th=[ 146], 5.00th=[ 167], 10.00th=[ 180], 20.00th=[ 197], | 30.00th=[ 211], 40.00th=[ 224], 50.00th=[ 234], 60.00th=[ 247], | 70.00th=[ 259], 80.00th=[ 279], 90.00th=[ 309], 95.00th=[ 334], | 99.00th=[ 384], 99.50th=[ 651], 99.90th=[ 701], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 55, max= 215, per=25.14%, avg=132.49, stdev=36.57, samples=78 iops : min= 13, max= 53, avg=32.58, stdev= 9.19, samples=78 lat (msec) : 50=0.08%, 100=0.08%, 250=63.95%, 500=35.35%, 750=0.55% cpu : usr=0.28%, sys=1.61%, ctx=3907, 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=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=180410: Mon Aug 24 11:56:41 2026 read: IOPS=31, BW=126KiB/s (129kB/s)(4984KiB/39411msec) slat (usec): min=3638, max=75815, avg=17265.70, stdev=9228.25 clat (msec): min=102, max=427, avg=230.99, stdev=50.92 lat (msec): min=115, max=444, avg=248.27, stdev=52.59 clat percentiles (msec): | 1.00th=[ 136], 5.00th=[ 157], 10.00th=[ 167], 20.00th=[ 188], | 30.00th=[ 201], 40.00th=[ 213], 50.00th=[ 228], 60.00th=[ 241], | 70.00th=[ 255], 80.00th=[ 275], 90.00th=[ 300], 95.00th=[ 321], | 99.00th=[ 363], 99.50th=[ 388], 99.90th=[ 422], 99.95th=[ 426], | 99.99th=[ 426] bw ( KiB/s): min= 70, max= 215, per=25.05%, avg=126.74, stdev=31.29, samples=77 iops : min= 17, max= 53, avg=31.17, stdev= 7.89, samples=77 write: IOPS=33, BW=133KiB/s (137kB/s)(5256KiB/39411msec); 0 zone resets slat (usec): min=30, max=14183, avg=283.60, stdev=935.82 clat (msec): min=69, max=460, avg=241.60, stdev=52.55 lat (msec): min=69, max=460, avg=241.88, stdev=52.50 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 165], 10.00th=[ 180], 20.00th=[ 197], | 30.00th=[ 211], 40.00th=[ 224], 50.00th=[ 236], 60.00th=[ 249], | 70.00th=[ 266], 80.00th=[ 288], 90.00th=[ 313], 95.00th=[ 334], | 99.00th=[ 376], 99.50th=[ 393], 99.90th=[ 435], 99.95th=[ 460], | 99.99th=[ 460] bw ( KiB/s): min= 56, max= 207, per=25.27%, avg=133.18, stdev=34.19, samples=77 iops : min= 14, max= 51, avg=32.75, stdev= 8.56, samples=77 lat (msec) : 100=0.08%, 250=63.16%, 500=36.76% cpu : usr=0.24%, sys=1.68%, ctx=4192, 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=180411: Mon Aug 24 11:56:41 2026 read: IOPS=31, BW=128KiB/s (131kB/s)(5060KiB/39555msec) slat (msec): min=3, max=293, avg=17.91, stdev=12.53 clat (msec): min=45, max=470, avg=232.03, stdev=56.12 lat (msec): min=70, max=484, avg=249.95, stdev=58.10 clat percentiles (msec): | 1.00th=[ 133], 5.00th=[ 153], 10.00th=[ 167], 20.00th=[ 186], | 30.00th=[ 201], 40.00th=[ 213], 50.00th=[ 226], 60.00th=[ 239], | 70.00th=[ 255], 80.00th=[ 275], 90.00th=[ 300], 95.00th=[ 338], | 99.00th=[ 401], 99.50th=[ 422], 99.90th=[ 468], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 64, max= 207, per=25.15%, avg=127.28, stdev=31.37, samples=78 iops : min= 16, max= 51, avg=31.28, stdev= 7.89, samples=78 write: IOPS=32, BW=131KiB/s (134kB/s)(5180KiB/39555msec); 0 zone resets slat (usec): min=31, max=27425, avg=283.21, stdev=1111.43 clat (msec): min=75, max=495, avg=241.55, stdev=55.35 lat (msec): min=75, max=495, avg=241.84, stdev=55.35 clat percentiles (msec): | 1.00th=[ 148], 5.00th=[ 167], 10.00th=[ 178], 20.00th=[ 194], | 30.00th=[ 211], 40.00th=[ 224], 50.00th=[ 236], 60.00th=[ 249], | 70.00th=[ 262], 80.00th=[ 284], 90.00th=[ 313], 95.00th=[ 338], | 99.00th=[ 439], 99.50th=[ 464], 99.90th=[ 489], 99.95th=[ 498], | 99.99th=[ 498] bw ( KiB/s): min= 54, max= 215, per=24.74%, avg=130.40, stdev=31.52, samples=78 iops : min= 13, max= 53, avg=32.06, stdev= 7.87, samples=78 lat (msec) : 50=0.04%, 100=0.08%, 250=64.06%, 500=35.82% cpu : usr=0.32%, sys=1.61%, ctx=4273, 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=507KiB/s (519kB/s), 126KiB/s-128KiB/s (129kB/s-131kB/s), io=19.6MiB (20.5MB), run=39411-39583msec WRITE: bw=528KiB/s (540kB/s), 131KiB/s-133KiB/s (134kB/s-137kB/s), io=20.4MiB (21.4MB), run=39411-39583msec 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=180421: Mon Aug 24 11:56:53 2026 read: IOPS=1, BW=61.3MiB/s (64.2MB/s)(40.0MiB/653msec) slat (nsec): min=40594k, max=40594k, avg=40594377.00, stdev= 0.00 clat (nsec): min=560142k, max=560142k, avg=560142346.00, stdev= 0.00 lat (nsec): min=600741k, max=600741k, avg=600741416.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 558], 5.00th=[ 558], 10.00th=[ 558], 20.00th=[ 558], | 30.00th=[ 558], 40.00th=[ 558], 50.00th=[ 558], 60.00th=[ 558], | 70.00th=[ 558], 80.00th=[ 558], 90.00th=[ 558], 95.00th=[ 558], | 99.00th=[ 558], 99.50th=[ 558], 99.90th=[ 558], 99.95th=[ 558], | 99.99th=[ 558] lat (msec) : 750=100.00% cpu : usr=0.31%, sys=2.45%, ctx=8, 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=61.3MiB/s (64.2MB/s), 61.3MiB/s-61.3MiB/s (64.2MB/s-64.2MB/s), io=40.0MiB (41.9MB), run=653-653msec 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