== sanity test 398c: run fio to test AIO ================= 05:35:13 (1779701713) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.641542 s, 65.4 MB/s osc.lustre-OST0000-osc-ffff8b51f51e6800.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=179376: Mon May 25 05:36:01 2026 write: IOPS=78, BW=314KiB/s (322kB/s)(10.0MiB/32576msec); 0 zone resets slat (usec): min=40, max=18159, avg=416.67, stdev=1134.88 clat (msec): min=17, max=570, avg=202.95, stdev=57.80 lat (msec): min=17, max=571, avg=203.37, stdev=57.78 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 130], 10.00th=[ 144], 20.00th=[ 157], | 30.00th=[ 167], 40.00th=[ 178], 50.00th=[ 190], 60.00th=[ 209], | 70.00th=[ 230], 80.00th=[ 247], 90.00th=[ 284], 95.00th=[ 313], | 99.00th=[ 368], 99.50th=[ 384], 99.90th=[ 456], 99.95th=[ 550], | 99.99th=[ 575] bw ( KiB/s): min= 166, max= 508, per=25.45%, avg=315.09, stdev=73.41, samples=64 iops : min= 41, max= 127, avg=78.30, stdev=18.39, samples=64 lat (msec) : 20=0.04%, 50=0.23%, 100=0.82%, 250=80.16%, 500=18.67% lat (msec) : 750=0.08% cpu : usr=0.19%, sys=1.36%, ctx=2946, 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=179377: Mon May 25 05:36:01 2026 write: IOPS=77, BW=310KiB/s (317kB/s)(10.0MiB/33081msec); 0 zone resets slat (usec): min=37, max=26875, avg=350.19, stdev=1225.63 clat (msec): min=24, max=377, avg=205.39, stdev=54.60 lat (msec): min=25, max=377, avg=205.75, stdev=54.63 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 138], 10.00th=[ 148], 20.00th=[ 159], | 30.00th=[ 169], 40.00th=[ 182], 50.00th=[ 194], 60.00th=[ 209], | 70.00th=[ 226], 80.00th=[ 253], 90.00th=[ 296], 95.00th=[ 317], | 99.00th=[ 334], 99.50th=[ 355], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 376] bw ( KiB/s): min= 151, max= 508, per=24.93%, avg=308.60, stdev=78.80, samples=65 iops : min= 37, max= 127, avg=76.68, stdev=19.71, samples=65 lat (msec) : 50=0.04%, 100=0.62%, 250=78.79%, 500=20.55% cpu : usr=0.16%, sys=1.06%, ctx=2066, 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=179378: Mon May 25 05:36:01 2026 write: IOPS=77, BW=310KiB/s (317kB/s)(10.0MiB/33079msec); 0 zone resets slat (usec): min=36, max=29196, avg=410.27, stdev=1425.20 clat (msec): min=32, max=378, avg=205.16, stdev=55.17 lat (msec): min=33, max=378, avg=205.58, stdev=55.20 clat percentiles (msec): | 1.00th=[ 111], 5.00th=[ 132], 10.00th=[ 146], 20.00th=[ 159], | 30.00th=[ 167], 40.00th=[ 180], 50.00th=[ 197], 60.00th=[ 211], | 70.00th=[ 226], 80.00th=[ 251], 90.00th=[ 292], 95.00th=[ 313], | 99.00th=[ 338], 99.50th=[ 351], 99.90th=[ 376], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 167, max= 495, per=24.98%, avg=309.25, stdev=72.73, samples=65 iops : min= 41, max= 123, avg=76.83, stdev=18.19, samples=65 lat (msec) : 50=0.12%, 100=0.08%, 250=79.53%, 500=20.27% cpu : usr=0.16%, sys=1.23%, ctx=2627, 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=179379: Mon May 25 05:36:01 2026 write: IOPS=77, BW=310KiB/s (317kB/s)(10.0MiB/33078msec); 0 zone resets slat (usec): min=38, max=11076, avg=347.88, stdev=850.43 clat (msec): min=34, max=381, avg=205.14, stdev=54.87 lat (msec): min=34, max=381, avg=205.50, stdev=54.92 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 133], 10.00th=[ 146], 20.00th=[ 161], | 30.00th=[ 167], 40.00th=[ 180], 50.00th=[ 192], 60.00th=[ 211], | 70.00th=[ 230], 80.00th=[ 251], 90.00th=[ 288], 95.00th=[ 313], | 99.00th=[ 355], 99.50th=[ 355], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 151, max= 508, per=24.97%, avg=309.17, stdev=74.18, samples=65 iops : min= 37, max= 127, avg=76.82, stdev=18.58, samples=65 lat (msec) : 50=0.08%, 100=0.12%, 250=79.30%, 500=20.51% cpu : usr=0.19%, sys=1.27%, ctx=2470, 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=1238KiB/s (1268kB/s), 310KiB/s-314KiB/s (317kB/s-322kB/s), io=40.0MiB (41.9MB), run=32576-33081msec 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=179394: Mon May 25 05:36:53 2026 read: IOPS=32, BW=130KiB/s (133kB/s)(5048KiB/38829msec) slat (usec): min=3510, max=60307, avg=17264.09, stdev=9174.28 clat (msec): min=36, max=524, avg=229.34, stdev=56.77 lat (msec): min=45, max=567, avg=246.62, stdev=58.66 clat percentiles (msec): | 1.00th=[ 123], 5.00th=[ 146], 10.00th=[ 163], 20.00th=[ 184], | 30.00th=[ 199], 40.00th=[ 211], 50.00th=[ 224], 60.00th=[ 239], | 70.00th=[ 253], 80.00th=[ 271], 90.00th=[ 309], 95.00th=[ 334], | 99.00th=[ 376], 99.50th=[ 401], 99.90th=[ 489], 99.95th=[ 527], | 99.99th=[ 527] bw ( KiB/s): min= 59, max= 191, per=25.22%, avg=130.12, stdev=28.21, samples=76 iops : min= 14, max= 47, avg=32.01, stdev= 7.09, samples=76 write: IOPS=33, BW=134KiB/s (137kB/s)(5192KiB/38829msec); 0 zone resets slat (usec): min=57, max=16795, avg=417.47, stdev=1072.53 clat (msec): min=58, max=583, avg=234.44, stdev=54.14 lat (msec): min=62, max=583, avg=234.86, stdev=54.16 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 157], 10.00th=[ 171], 20.00th=[ 190], | 30.00th=[ 203], 40.00th=[ 215], 50.00th=[ 228], 60.00th=[ 243], | 70.00th=[ 257], 80.00th=[ 279], 90.00th=[ 305], 95.00th=[ 334], | 99.00th=[ 380], 99.50th=[ 401], 99.90th=[ 527], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 59, max= 208, per=24.98%, avg=134.12, stdev=36.11, samples=76 iops : min= 14, max= 52, avg=33.01, stdev= 9.07, samples=76 lat (msec) : 50=0.04%, 100=0.20%, 250=66.72%, 500=32.93%, 750=0.12% cpu : usr=0.26%, sys=2.03%, ctx=4441, 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=179395: Mon May 25 05:36:53 2026 read: IOPS=32, BW=128KiB/s (131kB/s)(4976KiB/38831msec) slat (usec): min=4070, max=69767, avg=17489.03, stdev=9385.43 clat (msec): min=26, max=488, avg=229.17, stdev=59.84 lat (msec): min=48, max=510, avg=246.67, stdev=61.79 clat percentiles (msec): | 1.00th=[ 129], 5.00th=[ 148], 10.00th=[ 161], 20.00th=[ 178], | 30.00th=[ 194], 40.00th=[ 209], 50.00th=[ 220], 60.00th=[ 234], | 70.00th=[ 253], 80.00th=[ 275], 90.00th=[ 317], 95.00th=[ 342], | 99.00th=[ 397], 99.50th=[ 414], 99.90th=[ 468], 99.95th=[ 489], | 99.99th=[ 489] bw ( KiB/s): min= 63, max= 191, per=24.82%, avg=128.07, stdev=30.43, samples=76 iops : min= 15, max= 47, avg=31.51, stdev= 7.63, samples=76 write: IOPS=33, BW=136KiB/s (139kB/s)(5264KiB/38831msec); 0 zone resets slat (usec): min=50, max=13127, avg=412.96, stdev=968.71 clat (msec): min=92, max=579, avg=235.59, stdev=54.59 lat (msec): min=92, max=579, avg=236.01, stdev=54.62 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 157], 10.00th=[ 169], 20.00th=[ 192], | 30.00th=[ 205], 40.00th=[ 218], 50.00th=[ 230], 60.00th=[ 243], | 70.00th=[ 257], 80.00th=[ 279], 90.00th=[ 309], 95.00th=[ 338], | 99.00th=[ 380], 99.50th=[ 409], 99.90th=[ 531], 99.95th=[ 584], | 99.99th=[ 584] bw ( KiB/s): min= 70, max= 223, per=25.26%, avg=135.63, stdev=35.46, samples=76 iops : min= 17, max= 55, avg=33.42, stdev= 8.88, samples=76 lat (msec) : 50=0.08%, 100=0.16%, 250=66.56%, 500=33.12%, 750=0.08% cpu : usr=0.32%, sys=2.11%, ctx=4357, 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=179396: Mon May 25 05:36:53 2026 read: IOPS=32, BW=128KiB/s (131kB/s)(4984KiB/38861msec) slat (usec): min=3487, max=69266, avg=17008.14, stdev=9180.34 clat (msec): min=23, max=556, avg=228.57, stdev=54.85 lat (msec): min=37, max=598, avg=245.59, stdev=56.56 clat percentiles (msec): | 1.00th=[ 124], 5.00th=[ 148], 10.00th=[ 163], 20.00th=[ 182], | 30.00th=[ 197], 40.00th=[ 213], 50.00th=[ 226], 60.00th=[ 241], | 70.00th=[ 255], 80.00th=[ 275], 90.00th=[ 296], 95.00th=[ 321], | 99.00th=[ 376], 99.50th=[ 384], 99.90th=[ 510], 99.95th=[ 558], | 99.99th=[ 558] bw ( KiB/s): min= 64, max= 221, per=24.90%, avg=128.49, stdev=33.07, samples=76 iops : min= 16, max= 55, avg=31.61, stdev= 8.33, samples=76 write: IOPS=33, BW=135KiB/s (138kB/s)(5256KiB/38861msec); 0 zone resets slat (usec): min=39, max=21149, avg=404.29, stdev=1083.77 clat (msec): min=85, max=509, avg=236.93, stdev=52.47 lat (msec): min=85, max=509, avg=237.34, stdev=52.45 clat percentiles (msec): | 1.00th=[ 142], 5.00th=[ 161], 10.00th=[ 176], 20.00th=[ 192], | 30.00th=[ 207], 40.00th=[ 218], 50.00th=[ 230], 60.00th=[ 243], | 70.00th=[ 259], 80.00th=[ 279], 90.00th=[ 313], 95.00th=[ 338], | 99.00th=[ 376], 99.50th=[ 397], 99.90th=[ 405], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 79, max= 200, per=25.08%, avg=134.66, stdev=31.61, samples=76 iops : min= 19, max= 50, avg=33.16, stdev= 7.91, samples=76 lat (msec) : 50=0.04%, 100=0.08%, 250=66.25%, 500=33.52%, 750=0.12% cpu : usr=0.25%, sys=1.98%, ctx=4495, 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=179397: Mon May 25 05:36:53 2026 read: IOPS=32, BW=130KiB/s (133kB/s)(5060KiB/38850msec) slat (usec): min=63, max=68175, avg=17294.46, stdev=9449.85 clat (msec): min=12, max=471, avg=228.09, stdev=57.11 lat (msec): min=13, max=499, avg=245.39, stdev=58.97 clat percentiles (msec): | 1.00th=[ 117], 5.00th=[ 146], 10.00th=[ 159], 20.00th=[ 182], | 30.00th=[ 197], 40.00th=[ 209], 50.00th=[ 224], 60.00th=[ 239], | 70.00th=[ 251], 80.00th=[ 275], 90.00th=[ 305], 95.00th=[ 334], | 99.00th=[ 388], 99.50th=[ 397], 99.90th=[ 414], 99.95th=[ 472], | 99.99th=[ 472] bw ( KiB/s): min= 78, max= 223, per=25.28%, avg=130.43, stdev=32.37, samples=76 iops : min= 19, max= 55, avg=32.09, stdev= 8.12, samples=76 write: IOPS=33, BW=133KiB/s (137kB/s)(5180KiB/38850msec); 0 zone resets slat (usec): min=47, max=17505, avg=431.35, stdev=1137.09 clat (msec): min=100, max=507, avg=239.15, stdev=55.27 lat (msec): min=101, max=508, avg=239.58, stdev=55.28 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 161], 10.00th=[ 176], 20.00th=[ 192], | 30.00th=[ 207], 40.00th=[ 218], 50.00th=[ 230], 60.00th=[ 247], | 70.00th=[ 264], 80.00th=[ 284], 90.00th=[ 313], 95.00th=[ 338], | 99.00th=[ 393], 99.50th=[ 418], 99.90th=[ 506], 99.95th=[ 510], | 99.99th=[ 510] bw ( KiB/s): min= 63, max= 223, per=24.68%, avg=132.55, stdev=30.97, samples=76 iops : min= 15, max= 55, avg=32.62, stdev= 7.78, samples=76 lat (msec) : 20=0.08%, 100=0.04%, 250=65.90%, 500=33.91%, 750=0.08% cpu : usr=0.26%, sys=2.11%, ctx=4435, 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=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=516KiB/s (529kB/s), 128KiB/s-130KiB/s (131kB/s-133kB/s), io=19.6MiB (20.5MB), run=38829-38861msec WRITE: bw=538KiB/s (551kB/s), 133KiB/s-136KiB/s (137kB/s-139kB/s), io=20.4MiB (21.4MB), run=38829-38861msec 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=179408: Mon May 25 05:37:06 2026 read: IOPS=1, BW=69.2MiB/s (72.6MB/s)(40.0MiB/578msec) slat (nsec): min=63296k, max=63296k, avg=63295546.00, stdev= 0.00 clat (nsec): min=493894k, max=493894k, avg=493893829.00, stdev= 0.00 lat (nsec): min=557194k, max=557194k, avg=557193633.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 493], 10.00th=[ 493], 20.00th=[ 493], | 30.00th=[ 493], 40.00th=[ 493], 50.00th=[ 493], 60.00th=[ 493], | 70.00th=[ 493], 80.00th=[ 493], 90.00th=[ 493], 95.00th=[ 493], | 99.00th=[ 493], 99.50th=[ 493], 99.90th=[ 493], 99.95th=[ 493], | 99.99th=[ 493] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.43%, ctx=13, 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=69.2MiB/s (72.6MB/s), 69.2MiB/s-69.2MiB/s (72.6MB/s-72.6MB/s), io=40.0MiB (41.9MB), run=578-578msec 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