== sanity test 398c: run fio to test AIO ================= 04:01:47 (1787126507) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.552172 s, 76.0 MB/s osc.lustre-OST0000-osc-ffff9f3f9336b800.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=179671: Wed Aug 19 04:02:29 2026 write: IOPS=81, BW=326KiB/s (334kB/s)(10.0MiB/31377msec); 0 zone resets slat (usec): min=36, max=16328, avg=266.92, stdev=807.76 clat (msec): min=13, max=402, avg=194.99, stdev=49.85 lat (msec): min=13, max=402, avg=195.26, stdev=49.84 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 129], 10.00th=[ 138], 20.00th=[ 153], | 30.00th=[ 167], 40.00th=[ 178], 50.00th=[ 188], 60.00th=[ 201], | 70.00th=[ 213], 80.00th=[ 230], 90.00th=[ 264], 95.00th=[ 288], | 99.00th=[ 338], 99.50th=[ 372], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 151, max= 486, per=24.97%, avg=325.61, stdev=70.49, samples=62 iops : min= 37, max= 121, avg=80.98, stdev=17.68, samples=62 lat (msec) : 20=0.04%, 50=0.08%, 100=0.90%, 250=85.66%, 500=13.32% cpu : usr=0.19%, sys=1.17%, ctx=2471, 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=179672: Wed Aug 19 04:02:29 2026 write: IOPS=82, BW=329KiB/s (337kB/s)(10.0MiB/31154msec); 0 zone resets slat (usec): min=36, max=30045, avg=268.29, stdev=1000.27 clat (msec): min=52, max=381, avg=194.24, stdev=49.47 lat (msec): min=52, max=381, avg=194.51, stdev=49.46 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 125], 10.00th=[ 138], 20.00th=[ 153], | 30.00th=[ 167], 40.00th=[ 178], 50.00th=[ 188], 60.00th=[ 201], | 70.00th=[ 215], 80.00th=[ 234], 90.00th=[ 259], 95.00th=[ 288], | 99.00th=[ 338], 99.50th=[ 359], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 230, max= 501, per=25.09%, avg=327.18, stdev=62.66, samples=61 iops : min= 57, max= 125, avg=81.38, stdev=15.68, samples=61 lat (msec) : 100=0.82%, 250=86.45%, 500=12.73% cpu : usr=0.15%, sys=0.97%, ctx=2444, 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=179673: Wed Aug 19 04:02:29 2026 write: IOPS=81, BW=326KiB/s (334kB/s)(10.0MiB/31390msec); 0 zone resets slat (usec): min=36, max=15744, avg=272.49, stdev=964.35 clat (msec): min=15, max=352, avg=194.83, stdev=49.86 lat (msec): min=16, max=352, avg=195.10, stdev=49.88 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 125], 10.00th=[ 138], 20.00th=[ 157], | 30.00th=[ 167], 40.00th=[ 178], 50.00th=[ 188], 60.00th=[ 201], | 70.00th=[ 218], 80.00th=[ 232], 90.00th=[ 264], 95.00th=[ 292], | 99.00th=[ 321], 99.50th=[ 342], 99.90th=[ 351], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 192, max= 510, per=24.77%, avg=323.02, stdev=73.84, samples=61 iops : min= 48, max= 127, avg=80.33, stdev=18.47, samples=61 lat (msec) : 20=0.08%, 50=0.35%, 100=0.39%, 250=85.51%, 500=13.67% cpu : usr=0.14%, sys=1.04%, ctx=2297, 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=179674: Wed Aug 19 04:02:29 2026 write: IOPS=81, BW=326KiB/s (334kB/s)(10.0MiB/31403msec); 0 zone resets slat (usec): min=37, max=10888, avg=235.34, stdev=661.10 clat (msec): min=50, max=399, avg=195.07, stdev=49.97 lat (msec): min=50, max=400, avg=195.31, stdev=49.96 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 129], 10.00th=[ 138], 20.00th=[ 150], | 30.00th=[ 167], 40.00th=[ 178], 50.00th=[ 190], 60.00th=[ 203], | 70.00th=[ 215], 80.00th=[ 232], 90.00th=[ 262], 95.00th=[ 292], | 99.00th=[ 334], 99.50th=[ 380], 99.90th=[ 401], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 191, max= 501, per=24.84%, avg=323.95, stdev=67.22, samples=62 iops : min= 47, max= 125, avg=80.56, stdev=16.85, samples=62 lat (msec) : 100=0.39%, 250=86.33%, 500=13.28% cpu : usr=0.16%, sys=1.06%, ctx=2459, 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 Run status group 0 (all jobs): WRITE: bw=1304KiB/s (1336kB/s), 326KiB/s-329KiB/s (334kB/s-337kB/s), io=40.0MiB (41.9MB), run=31154-31403msec 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=179689: Wed Aug 19 04:03:09 2026 read: IOPS=41, BW=166KiB/s (170kB/s)(5048KiB/30340msec) slat (usec): min=2554, max=55803, avg=13398.78, stdev=7916.02 clat (msec): min=35, max=348, avg=178.91, stdev=49.35 lat (msec): min=46, max=378, avg=192.31, stdev=51.47 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 107], 10.00th=[ 118], 20.00th=[ 136], | 30.00th=[ 150], 40.00th=[ 163], 50.00th=[ 176], 60.00th=[ 188], | 70.00th=[ 203], 80.00th=[ 222], 90.00th=[ 245], 95.00th=[ 266], | 99.00th=[ 313], 99.50th=[ 326], 99.90th=[ 347], 99.95th=[ 351], | 99.99th=[ 351] bw ( KiB/s): min= 28, max= 308, per=25.03%, avg=165.42, stdev=41.24, samples=60 iops : min= 7, max= 77, avg=40.87, stdev=10.34, samples=60 write: IOPS=42, BW=171KiB/s (175kB/s)(5192KiB/30340msec); 0 zone resets slat (usec): min=38, max=17834, avg=272.81, stdev=690.27 clat (msec): min=35, max=339, avg=182.82, stdev=47.79 lat (msec): min=35, max=339, avg=183.10, stdev=47.81 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 113], 10.00th=[ 126], 20.00th=[ 142], | 30.00th=[ 157], 40.00th=[ 165], 50.00th=[ 178], 60.00th=[ 190], | 70.00th=[ 203], 80.00th=[ 220], 90.00th=[ 249], 95.00th=[ 275], | 99.00th=[ 313], 99.50th=[ 321], 99.90th=[ 334], 99.95th=[ 338], | 99.99th=[ 338] bw ( KiB/s): min= 36, max= 292, per=24.68%, avg=169.77, stdev=53.02, samples=60 iops : min= 9, max= 73, avg=41.97, stdev=13.29, samples=60 lat (msec) : 50=0.16%, 100=2.03%, 250=89.10%, 500=8.71% cpu : usr=0.23%, sys=1.98%, ctx=4361, 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=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=179690: Wed Aug 19 04:03:09 2026 read: IOPS=41, BW=165KiB/s (169kB/s)(4976KiB/30207msec) slat (usec): min=3016, max=87406, avg=13660.32, stdev=8091.19 clat (msec): min=25, max=433, avg=178.94, stdev=49.53 lat (msec): min=40, max=450, avg=192.61, stdev=51.51 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 109], 10.00th=[ 118], 20.00th=[ 140], | 30.00th=[ 150], 40.00th=[ 163], 50.00th=[ 174], 60.00th=[ 186], | 70.00th=[ 203], 80.00th=[ 220], 90.00th=[ 241], 95.00th=[ 266], | 99.00th=[ 321], 99.50th=[ 359], 99.90th=[ 401], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 36, max= 254, per=24.94%, avg=164.85, stdev=42.26, samples=59 iops : min= 9, max= 63, avg=40.73, stdev=10.59, samples=59 write: IOPS=43, BW=174KiB/s (178kB/s)(5264KiB/30207msec); 0 zone resets slat (usec): min=43, max=28995, avg=288.18, stdev=1011.08 clat (msec): min=20, max=480, avg=181.98, stdev=50.63 lat (msec): min=20, max=480, avg=182.27, stdev=50.65 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 112], 10.00th=[ 123], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 176], 60.00th=[ 190], | 70.00th=[ 201], 80.00th=[ 220], 90.00th=[ 251], 95.00th=[ 271], | 99.00th=[ 321], 99.50th=[ 351], 99.90th=[ 464], 99.95th=[ 481], | 99.99th=[ 481] bw ( KiB/s): min= 78, max= 324, per=25.48%, avg=175.31, stdev=48.29, samples=59 iops : min= 19, max= 81, avg=43.34, stdev=12.17, samples=59 lat (msec) : 50=0.12%, 100=2.11%, 250=89.18%, 500=8.59% cpu : usr=0.28%, sys=1.83%, ctx=4433, 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=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=179691: Wed Aug 19 04:03:09 2026 read: IOPS=41, BW=165KiB/s (169kB/s)(4984KiB/30124msec) slat (usec): min=63, max=88835, avg=13223.00, stdev=7964.42 clat (msec): min=60, max=408, avg=178.49, stdev=50.36 lat (msec): min=62, max=421, avg=191.72, stdev=52.54 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 107], 10.00th=[ 117], 20.00th=[ 136], | 30.00th=[ 150], 40.00th=[ 163], 50.00th=[ 171], 60.00th=[ 186], | 70.00th=[ 203], 80.00th=[ 220], 90.00th=[ 245], 95.00th=[ 266], | 99.00th=[ 326], 99.50th=[ 338], 99.90th=[ 397], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 95, max= 292, per=25.12%, avg=166.07, stdev=42.28, samples=59 iops : min= 23, max= 73, avg=41.00, stdev=10.64, samples=59 write: IOPS=43, BW=174KiB/s (179kB/s)(5256KiB/30124msec); 0 zone resets slat (usec): min=55, max=13340, avg=263.44, stdev=612.38 clat (msec): min=88, max=439, avg=183.96, stdev=50.41 lat (msec): min=88, max=439, avg=184.23, stdev=50.42 clat percentiles (msec): | 1.00th=[ 97], 5.00th=[ 113], 10.00th=[ 124], 20.00th=[ 144], | 30.00th=[ 157], 40.00th=[ 165], 50.00th=[ 180], 60.00th=[ 190], | 70.00th=[ 203], 80.00th=[ 222], 90.00th=[ 251], 95.00th=[ 275], | 99.00th=[ 326], 99.50th=[ 380], 99.90th=[ 439], 99.95th=[ 439], | 99.99th=[ 439] bw ( KiB/s): min= 79, max= 308, per=25.37%, avg=174.54, stdev=47.63, samples=59 iops : min= 19, max= 77, avg=43.15, stdev=12.00, samples=59 lat (msec) : 100=2.30%, 250=88.59%, 500=9.10% cpu : usr=0.21%, sys=1.82%, ctx=4651, 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=179692: Wed Aug 19 04:03:09 2026 read: IOPS=41, BW=167KiB/s (171kB/s)(5060KiB/30293msec) slat (usec): min=2459, max=69334, avg=13013.05, stdev=7744.36 clat (msec): min=31, max=361, avg=175.89, stdev=48.19 lat (msec): min=45, max=381, avg=188.92, stdev=50.48 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 108], 10.00th=[ 117], 20.00th=[ 136], | 30.00th=[ 148], 40.00th=[ 157], 50.00th=[ 171], 60.00th=[ 186], | 70.00th=[ 199], 80.00th=[ 213], 90.00th=[ 241], 95.00th=[ 262], | 99.00th=[ 313], 99.50th=[ 330], 99.90th=[ 347], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 22, max= 300, per=25.17%, avg=166.37, stdev=51.61, samples=60 iops : min= 5, max= 75, avg=41.10, stdev=12.95, samples=60 write: IOPS=42, BW=171KiB/s (175kB/s)(5180KiB/30293msec); 0 zone resets slat (usec): min=40, max=17595, avg=303.26, stdev=917.07 clat (msec): min=85, max=435, avg=186.04, stdev=51.48 lat (msec): min=85, max=435, avg=186.34, stdev=51.54 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 114], 10.00th=[ 125], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 167], 50.00th=[ 180], 60.00th=[ 194], | 70.00th=[ 209], 80.00th=[ 226], 90.00th=[ 255], 95.00th=[ 279], | 99.00th=[ 334], 99.50th=[ 363], 99.90th=[ 430], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 53, max= 284, per=24.75%, avg=170.30, stdev=39.76, samples=60 iops : min= 13, max= 71, avg=42.10, stdev=10.03, samples=60 lat (msec) : 50=0.04%, 100=2.27%, 250=88.48%, 500=9.22% cpu : usr=0.27%, sys=2.07%, ctx=4454, 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=661KiB/s (677kB/s), 165KiB/s-167KiB/s (169kB/s-171kB/s), io=19.6MiB (20.5MB), run=30124-30340msec WRITE: bw=689KiB/s (705kB/s), 171KiB/s-174KiB/s (175kB/s-179kB/s), io=20.4MiB (21.4MB), run=30124-30340msec 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=179700: Wed Aug 19 04:03:19 2026 read: IOPS=1, BW=61.2MiB/s (64.1MB/s)(40.0MiB/654msec) slat (nsec): min=44360k, max=44360k, avg=44360096.00, stdev= 0.00 clat (nsec): min=546121k, max=546121k, avg=546121339.00, stdev= 0.00 lat (nsec): min=590486k, max=590486k, avg=590486373.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.98%, ctx=5, 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=61.2MiB/s (64.1MB/s), 61.2MiB/s-61.2MiB/s (64.1MB/s-64.1MB/s), io=40.0MiB (41.9MB), run=654-654msec 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