== sanity test 398c: run fio to test AIO ================= 13:27:11 (1788197231) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.684508 s, 61.3 MB/s osc.lustre-OST0000-osc-ffff8c5d0923d800.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=180739: Mon Aug 31 13:27:48 2026 write: IOPS=95, BW=381KiB/s (390kB/s)(10.0MiB/26864msec); 0 zone resets slat (usec): min=35, max=12685, avg=255.08, stdev=699.44 clat (msec): min=32, max=348, avg=166.86, stdev=44.71 lat (msec): min=32, max=349, avg=167.12, stdev=44.73 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 115], 10.00th=[ 124], 20.00th=[ 133], | 30.00th=[ 138], 40.00th=[ 146], 50.00th=[ 157], 60.00th=[ 169], | 70.00th=[ 182], 80.00th=[ 201], 90.00th=[ 230], 95.00th=[ 259], | 99.00th=[ 309], 99.50th=[ 326], 99.90th=[ 334], 99.95th=[ 338], | 99.99th=[ 351] bw ( KiB/s): min= 174, max= 510, per=25.00%, avg=380.29, stdev=81.43, samples=52 iops : min= 43, max= 127, avg=94.67, stdev=20.39, samples=52 lat (msec) : 50=0.08%, 100=0.82%, 250=93.36%, 500=5.74% cpu : usr=0.17%, sys=1.06%, ctx=2086, 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=180740: Mon Aug 31 13:27:48 2026 write: IOPS=95, BW=381KiB/s (390kB/s)(10.0MiB/26873msec); 0 zone resets slat (usec): min=36, max=12991, avg=273.56, stdev=808.84 clat (msec): min=22, max=334, avg=167.44, stdev=44.97 lat (msec): min=22, max=334, avg=167.72, stdev=45.00 clat percentiles (msec): | 1.00th=[ 101], 5.00th=[ 113], 10.00th=[ 125], 20.00th=[ 133], | 30.00th=[ 140], 40.00th=[ 146], 50.00th=[ 157], 60.00th=[ 167], | 70.00th=[ 180], 80.00th=[ 203], 90.00th=[ 230], 95.00th=[ 255], | 99.00th=[ 317], 99.50th=[ 321], 99.90th=[ 334], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 251, max= 597, per=25.00%, avg=380.25, stdev=87.00, samples=52 iops : min= 62, max= 149, avg=94.67, stdev=21.79, samples=52 lat (msec) : 50=0.16%, 100=0.82%, 250=93.20%, 500=5.82% cpu : usr=0.13%, sys=1.15%, ctx=2693, 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=180741: Mon Aug 31 13:27:48 2026 write: IOPS=95, BW=381KiB/s (390kB/s)(10.0MiB/26895msec); 0 zone resets slat (usec): min=36, max=17915, avg=238.39, stdev=793.45 clat (msec): min=51, max=338, avg=166.94, stdev=43.98 lat (msec): min=52, max=338, avg=167.18, stdev=43.97 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 117], 10.00th=[ 125], 20.00th=[ 134], | 30.00th=[ 140], 40.00th=[ 148], 50.00th=[ 157], 60.00th=[ 163], | 70.00th=[ 180], 80.00th=[ 201], 90.00th=[ 230], 95.00th=[ 259], | 99.00th=[ 300], 99.50th=[ 313], 99.90th=[ 326], 99.95th=[ 326], | 99.99th=[ 338] bw ( KiB/s): min= 248, max= 637, per=24.87%, avg=378.21, stdev=89.73, samples=52 iops : min= 62, max= 159, avg=94.21, stdev=22.49, samples=52 lat (msec) : 100=1.25%, 250=92.81%, 500=5.94% cpu : usr=0.11%, sys=1.03%, ctx=2098, 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=180742: Mon Aug 31 13:27:48 2026 write: IOPS=95, BW=380KiB/s (390kB/s)(10.0MiB/26920msec); 0 zone resets slat (usec): min=36, max=14646, avg=281.73, stdev=853.08 clat (msec): min=15, max=340, avg=166.89, stdev=44.69 lat (msec): min=15, max=345, avg=167.18, stdev=44.67 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 114], 10.00th=[ 124], 20.00th=[ 133], | 30.00th=[ 140], 40.00th=[ 146], 50.00th=[ 157], 60.00th=[ 169], | 70.00th=[ 182], 80.00th=[ 199], 90.00th=[ 228], 95.00th=[ 253], | 99.00th=[ 317], 99.50th=[ 330], 99.90th=[ 338], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 215, max= 510, per=24.87%, avg=378.21, stdev=73.73, samples=52 iops : min= 53, max= 127, avg=94.15, stdev=18.46, samples=52 lat (msec) : 20=0.08%, 50=0.20%, 100=0.86%, 250=92.89%, 500=5.98% cpu : usr=0.20%, sys=1.31%, ctx=2729, 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=1522KiB/s (1558kB/s), 380KiB/s-381KiB/s (390kB/s-390kB/s), io=40.0MiB (41.9MB), run=26864-26920msec 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=180757: Mon Aug 31 13:28:27 2026 read: IOPS=42, BW=170KiB/s (174kB/s)(5048KiB/29755msec) slat (usec): min=2479, max=63323, avg=13046.51, stdev=7420.33 clat (msec): min=16, max=415, avg=175.95, stdev=45.65 lat (msec): min=57, max=448, avg=189.00, stdev=47.69 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 99], 10.00th=[ 116], 20.00th=[ 140], | 30.00th=[ 155], 40.00th=[ 167], 50.00th=[ 176], 60.00th=[ 186], | 70.00th=[ 197], 80.00th=[ 211], 90.00th=[ 230], 95.00th=[ 249], | 99.00th=[ 309], 99.50th=[ 330], 99.90th=[ 393], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 71, max= 368, per=25.02%, avg=168.61, stdev=44.68, samples=59 iops : min= 17, max= 92, avg=41.69, stdev=11.19, samples=59 write: IOPS=43, BW=174KiB/s (179kB/s)(5192KiB/29755msec); 0 zone resets slat (usec): min=38, max=14300, avg=280.08, stdev=673.88 clat (msec): min=69, max=365, avg=180.65, stdev=46.16 lat (msec): min=69, max=365, avg=180.93, stdev=46.17 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 103], 10.00th=[ 120], 20.00th=[ 144], | 30.00th=[ 157], 40.00th=[ 169], 50.00th=[ 182], 60.00th=[ 192], | 70.00th=[ 203], 80.00th=[ 218], 90.00th=[ 239], 95.00th=[ 259], | 99.00th=[ 300], 99.50th=[ 321], 99.90th=[ 368], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 87, max= 296, per=24.76%, avg=173.81, stdev=48.46, samples=59 iops : min= 21, max= 74, avg=42.98, stdev=12.21, samples=59 lat (msec) : 20=0.04%, 100=4.92%, 250=89.53%, 500=5.51% cpu : usr=0.25%, sys=2.02%, ctx=4266, 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=180758: Mon Aug 31 13:28:27 2026 read: IOPS=42, BW=168KiB/s (172kB/s)(4976KiB/29557msec) slat (usec): min=85, max=60838, avg=12958.59, stdev=7284.59 clat (msec): min=18, max=383, avg=176.60, stdev=47.01 lat (msec): min=18, max=421, avg=189.57, stdev=48.95 clat percentiles (msec): | 1.00th=[ 78], 5.00th=[ 99], 10.00th=[ 115], 20.00th=[ 140], | 30.00th=[ 155], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 188], | 70.00th=[ 201], 80.00th=[ 213], 90.00th=[ 232], 95.00th=[ 247], | 99.00th=[ 309], 99.50th=[ 351], 99.90th=[ 376], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 103, max= 302, per=24.88%, avg=167.71, stdev=43.90, samples=58 iops : min= 25, max= 75, avg=41.47, stdev=11.00, samples=58 write: IOPS=44, BW=178KiB/s (182kB/s)(5264KiB/29557msec); 0 zone resets slat (usec): min=55, max=15949, avg=262.73, stdev=761.34 clat (msec): min=70, max=323, avg=179.49, stdev=44.74 lat (msec): min=70, max=323, avg=179.76, stdev=44.75 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 99], 10.00th=[ 121], 20.00th=[ 144], | 30.00th=[ 159], 40.00th=[ 171], 50.00th=[ 182], 60.00th=[ 192], | 70.00th=[ 201], 80.00th=[ 218], 90.00th=[ 236], 95.00th=[ 255], | 99.00th=[ 284], 99.50th=[ 300], 99.90th=[ 321], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 79, max= 392, per=25.38%, avg=178.17, stdev=49.14, samples=58 iops : min= 19, max= 98, avg=44.10, stdev=12.36, samples=58 lat (msec) : 20=0.04%, 50=0.16%, 100=5.35%, 250=89.53%, 500=4.92% cpu : usr=0.25%, sys=1.95%, ctx=4285, 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=180759: Mon Aug 31 13:28:27 2026 read: IOPS=41, BW=168KiB/s (172kB/s)(4984KiB/29707msec) slat (usec): min=2826, max=75218, avg=13032.17, stdev=7267.75 clat (msec): min=14, max=420, avg=174.09, stdev=47.92 lat (msec): min=28, max=454, avg=187.13, stdev=50.25 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 99], 10.00th=[ 114], 20.00th=[ 136], | 30.00th=[ 148], 40.00th=[ 163], 50.00th=[ 176], 60.00th=[ 184], | 70.00th=[ 197], 80.00th=[ 211], 90.00th=[ 234], 95.00th=[ 249], | 99.00th=[ 326], 99.50th=[ 351], 99.90th=[ 384], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 103, max= 376, per=24.90%, avg=167.84, stdev=49.39, samples=58 iops : min= 25, max= 94, avg=41.53, stdev=12.39, samples=58 write: IOPS=44, BW=177KiB/s (181kB/s)(5256KiB/29707msec); 0 zone resets slat (usec): min=41, max=7832, avg=216.46, stdev=428.14 clat (msec): min=70, max=412, avg=182.29, stdev=44.78 lat (msec): min=74, max=412, avg=182.50, stdev=44.78 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 110], 10.00th=[ 128], 20.00th=[ 146], | 30.00th=[ 159], 40.00th=[ 171], 50.00th=[ 184], 60.00th=[ 194], | 70.00th=[ 203], 80.00th=[ 218], 90.00th=[ 236], 95.00th=[ 253], | 99.00th=[ 300], 99.50th=[ 347], 99.90th=[ 384], 99.95th=[ 414], | 99.99th=[ 414] bw ( KiB/s): min= 63, max= 264, per=25.12%, avg=176.31, stdev=43.21, samples=58 iops : min= 15, max= 66, avg=43.62, stdev=10.89, samples=58 lat (msec) : 20=0.04%, 100=4.69%, 250=90.16%, 500=5.12% cpu : usr=0.20%, sys=1.99%, ctx=4063, 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=180760: Mon Aug 31 13:28:27 2026 read: IOPS=42, BW=170KiB/s (174kB/s)(5060KiB/29744msec) slat (usec): min=2256, max=61953, avg=13090.92, stdev=6913.22 clat (msec): min=62, max=418, avg=175.86, stdev=46.02 lat (msec): min=71, max=457, avg=188.96, stdev=47.91 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 100], 10.00th=[ 117], 20.00th=[ 140], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 176], 60.00th=[ 186], | 70.00th=[ 197], 80.00th=[ 211], 90.00th=[ 234], 95.00th=[ 249], | 99.00th=[ 300], 99.50th=[ 359], 99.90th=[ 397], 99.95th=[ 418], | 99.99th=[ 418] bw ( KiB/s): min= 104, max= 360, per=25.09%, avg=169.08, stdev=44.56, samples=59 iops : min= 26, max= 90, avg=41.81, stdev=11.18, samples=59 write: IOPS=43, BW=174KiB/s (178kB/s)(5180KiB/29744msec); 0 zone resets slat (usec): min=55, max=13223, avg=316.04, stdev=874.02 clat (msec): min=73, max=408, avg=180.72, stdev=45.61 lat (msec): min=74, max=408, avg=181.04, stdev=45.62 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 108], 10.00th=[ 122], 20.00th=[ 142], | 30.00th=[ 157], 40.00th=[ 171], 50.00th=[ 182], 60.00th=[ 192], | 70.00th=[ 205], 80.00th=[ 218], 90.00th=[ 234], 95.00th=[ 257], | 99.00th=[ 305], 99.50th=[ 338], 99.90th=[ 380], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 79, max= 304, per=24.67%, avg=173.20, stdev=46.07, samples=59 iops : min= 19, max= 76, avg=42.86, stdev=11.56, samples=59 lat (msec) : 100=4.26%, 250=90.35%, 500=5.39% cpu : usr=0.25%, sys=1.95%, ctx=4639, 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=674KiB/s (691kB/s), 168KiB/s-170KiB/s (172kB/s-174kB/s), io=19.6MiB (20.5MB), run=29557-29755msec WRITE: bw=702KiB/s (719kB/s), 174KiB/s-178KiB/s (178kB/s-182kB/s), io=20.4MiB (21.4MB), run=29557-29755msec 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=180768: Mon Aug 31 13:28:38 2026 read: IOPS=2, BW=80.0MiB/s (84.9MB/s)(40.0MiB/494msec) slat (nsec): min=41879k, max=41879k, avg=41879014.00, stdev= 0.00 clat (nsec): min=430214k, max=430214k, avg=430214177.00, stdev= 0.00 lat (nsec): min=472098k, max=472098k, avg=472097871.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 430], 10.00th=[ 430], 20.00th=[ 430], | 30.00th=[ 430], 40.00th=[ 430], 50.00th=[ 430], 60.00th=[ 430], | 70.00th=[ 430], 80.00th=[ 430], 90.00th=[ 430], 95.00th=[ 430], | 99.00th=[ 430], 99.50th=[ 430], 99.90th=[ 430], 99.95th=[ 430], | 99.99th=[ 430] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.84%, ctx=5, majf=0, minf=10 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=80.0MiB/s (84.9MB/s), 80.0MiB/s-80.0MiB/s (84.9MB/s-84.9MB/s), io=40.0MiB (41.9MB), run=494-494msec 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