== sanity test 398c: run fio to test AIO ================= 17:37:10 (1779313030) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.239648 s, 175 MB/s osc.lustre-OST0000-osc-ffff8d148c12d800.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=149120: Wed May 20 17:38:36 2026 write: IOPS=31, BW=127KiB/s (130kB/s)(10.0MiB/80646msec); 0 zone resets slat (usec): min=35, max=7546, avg=262.17, stdev=494.48 clat (msec): min=238, max=976, avg=503.19, stdev=120.08 lat (msec): min=238, max=976, avg=503.45, stdev=120.09 clat percentiles (msec): | 1.00th=[ 253], 5.00th=[ 313], 10.00th=[ 363], 20.00th=[ 409], | 30.00th=[ 439], 40.00th=[ 464], 50.00th=[ 489], 60.00th=[ 523], | 70.00th=[ 558], 80.00th=[ 600], 90.00th=[ 667], 95.00th=[ 718], | 99.00th=[ 827], 99.50th=[ 894], 99.90th=[ 953], 99.95th=[ 953], | 99.99th=[ 978] bw ( KiB/s): min= 47, max= 256, per=24.92%, avg=126.34, stdev=34.78, samples=160 iops : min= 11, max= 64, avg=31.21, stdev= 8.76, samples=160 lat (msec) : 250=0.98%, 500=52.15%, 750=43.95%, 1000=2.93% cpu : usr=0.07%, sys=0.47%, ctx=2881, 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=149121: Wed May 20 17:38:36 2026 write: IOPS=31, BW=127KiB/s (130kB/s)(10.0MiB/80574msec); 0 zone resets slat (usec): min=40, max=9330, avg=270.29, stdev=485.87 clat (msec): min=65, max=950, avg=503.08, stdev=124.16 lat (msec): min=66, max=951, avg=503.35, stdev=124.16 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 309], 10.00th=[ 355], 20.00th=[ 405], | 30.00th=[ 439], 40.00th=[ 468], 50.00th=[ 493], 60.00th=[ 527], | 70.00th=[ 558], 80.00th=[ 600], 90.00th=[ 667], 95.00th=[ 726], | 99.00th=[ 810], 99.50th=[ 885], 99.90th=[ 927], 99.95th=[ 953], | 99.99th=[ 953] bw ( KiB/s): min= 56, max= 239, per=24.93%, avg=126.39, stdev=33.08, samples=160 iops : min= 14, max= 59, avg=31.22, stdev= 8.33, samples=160 lat (msec) : 100=0.04%, 250=1.64%, 500=49.92%, 750=44.69%, 1000=3.71% cpu : usr=0.07%, sys=0.50%, ctx=3243, 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=149122: Wed May 20 17:38:36 2026 write: IOPS=31, BW=127KiB/s (130kB/s)(10.0MiB/80670msec); 0 zone resets slat (usec): min=35, max=11750, avg=283.44, stdev=578.67 clat (msec): min=221, max=972, avg=503.31, stdev=120.61 lat (msec): min=221, max=977, avg=503.60, stdev=120.63 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 313], 10.00th=[ 363], 20.00th=[ 409], | 30.00th=[ 439], 40.00th=[ 464], 50.00th=[ 493], 60.00th=[ 523], | 70.00th=[ 558], 80.00th=[ 600], 90.00th=[ 659], 95.00th=[ 726], | 99.00th=[ 818], 99.50th=[ 869], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 969] bw ( KiB/s): min= 24, max= 256, per=24.84%, avg=125.93, stdev=32.27, samples=160 iops : min= 6, max= 64, avg=31.11, stdev= 8.12, samples=160 lat (msec) : 250=0.86%, 500=50.90%, 750=44.77%, 1000=3.48% cpu : usr=0.07%, sys=0.49%, ctx=2990, 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=149123: Wed May 20 17:38:36 2026 write: IOPS=31, BW=127KiB/s (130kB/s)(10.0MiB/80701msec); 0 zone resets slat (usec): min=35, max=5914, avg=261.16, stdev=466.71 clat (msec): min=153, max=907, avg=503.70, stdev=121.61 lat (msec): min=153, max=907, avg=503.97, stdev=121.64 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 313], 10.00th=[ 359], 20.00th=[ 405], | 30.00th=[ 435], 40.00th=[ 464], 50.00th=[ 493], 60.00th=[ 527], | 70.00th=[ 567], 80.00th=[ 600], 90.00th=[ 667], 95.00th=[ 718], | 99.00th=[ 810], 99.50th=[ 869], 99.90th=[ 911], 99.95th=[ 911], | 99.99th=[ 911] bw ( KiB/s): min= 31, max= 255, per=24.84%, avg=125.93, stdev=35.14, samples=160 iops : min= 7, max= 63, avg=31.11, stdev= 8.85, samples=160 lat (msec) : 250=0.51%, 500=52.42%, 750=43.55%, 1000=3.52% cpu : usr=0.06%, sys=0.49%, ctx=3001, 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=508KiB/s (520kB/s), 127KiB/s-127KiB/s (130kB/s-130kB/s), io=40.0MiB (41.9MB), run=80574-80701msec 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=149144: Wed May 20 17:39:42 2026 read: IOPS=20, BW=82.0KiB/s (83.0kB/s)(5048KiB/61543msec) slat (usec): min=1868, max=46594, avg=8805.90, stdev=5451.65 clat (msec): min=3, max=570, avg=240.13, stdev=85.12 lat (msec): min=9, max=582, avg=248.94, stdev=87.27 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 131], 10.00th=[ 148], 20.00th=[ 174], | 30.00th=[ 188], 40.00th=[ 205], 50.00th=[ 226], 60.00th=[ 247], | 70.00th=[ 275], 80.00th=[ 305], 90.00th=[ 355], 95.00th=[ 401], | 99.00th=[ 498], 99.50th=[ 542], 99.90th=[ 558], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 7, max= 168, per=25.05%, avg=81.66, stdev=35.72, samples=122 iops : min= 1, max= 42, avg=20.04, stdev= 8.99, samples=122 write: IOPS=21, BW=84.4KiB/s (86.4kB/s)(5192KiB/61543msec); 0 zone resets slat (usec): min=43, max=9781, avg=296.31, stdev=521.70 clat (msec): min=153, max=1029, avg=513.77, stdev=174.73 lat (msec): min=154, max=1029, avg=514.07, stdev=174.73 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 266], 10.00th=[ 296], 20.00th=[ 342], | 30.00th=[ 401], 40.00th=[ 456], 50.00th=[ 506], 60.00th=[ 550], | 70.00th=[ 592], 80.00th=[ 659], 90.00th=[ 760], 95.00th=[ 835], | 99.00th=[ 936], 99.50th=[ 969], 99.90th=[ 1020], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 13, max= 184, per=24.73%, avg=83.83, stdev=31.88, samples=122 iops : min= 3, max= 46, avg=20.59, stdev= 8.01, samples=122 lat (msec) : 4=0.04%, 10=0.04%, 20=0.04%, 50=0.20%, 100=0.39% lat (msec) : 250=31.33%, 500=41.76%, 750=20.94%, 1000=5.16%, 2000=0.12% cpu : usr=0.13%, sys=0.99%, ctx=5072, 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=149145: Wed May 20 17:39:42 2026 read: IOPS=20, BW=80.8KiB/s (82.8kB/s)(4976KiB/61550msec) slat (usec): min=1668, max=41924, avg=8677.18, stdev=5368.77 clat (msec): min=11, max=594, avg=240.26, stdev=88.23 lat (msec): min=16, max=608, avg=248.95, stdev=90.19 clat percentiles (msec): | 1.00th=[ 83], 5.00th=[ 132], 10.00th=[ 146], 20.00th=[ 169], | 30.00th=[ 186], 40.00th=[ 203], 50.00th=[ 224], 60.00th=[ 247], | 70.00th=[ 275], 80.00th=[ 305], 90.00th=[ 359], 95.00th=[ 405], | 99.00th=[ 527], 99.50th=[ 542], 99.90th=[ 584], 99.95th=[ 592], | 99.99th=[ 592] bw ( KiB/s): min= 15, max= 168, per=24.53%, avg=79.98, stdev=35.17, samples=122 iops : min= 3, max= 42, avg=19.63, stdev= 8.86, samples=122 write: IOPS=21, BW=85.5KiB/s (87.6kB/s)(5264KiB/61550msec); 0 zone resets slat (usec): min=44, max=23576, avg=328.78, stdev=906.88 clat (msec): min=57, max=996, avg=510.88, stdev=174.98 lat (msec): min=58, max=996, avg=511.21, stdev=175.02 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 262], 10.00th=[ 292], 20.00th=[ 338], | 30.00th=[ 393], 40.00th=[ 451], 50.00th=[ 506], 60.00th=[ 550], | 70.00th=[ 600], 80.00th=[ 676], 90.00th=[ 751], 95.00th=[ 810], | 99.00th=[ 927], 99.50th=[ 969], 99.90th=[ 995], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 23, max= 184, per=24.98%, avg=84.70, stdev=30.46, samples=122 iops : min= 5, max= 46, avg=20.80, stdev= 7.66, samples=122 lat (msec) : 20=0.12%, 50=0.08%, 100=0.59%, 250=30.78%, 500=41.48% lat (msec) : 750=21.45%, 1000=5.51% cpu : usr=0.13%, sys=0.96%, ctx=5008, 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=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=149146: Wed May 20 17:39:42 2026 read: IOPS=20, BW=81.4KiB/s (83.4kB/s)(4984KiB/61214msec) slat (usec): min=60, max=42136, avg=8707.18, stdev=5436.14 clat (msec): min=9, max=576, avg=242.21, stdev=89.25 lat (msec): min=16, max=593, avg=250.92, stdev=91.40 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 125], 10.00th=[ 140], 20.00th=[ 169], | 30.00th=[ 190], 40.00th=[ 209], 50.00th=[ 232], 60.00th=[ 253], | 70.00th=[ 279], 80.00th=[ 313], 90.00th=[ 355], 95.00th=[ 405], | 99.00th=[ 506], 99.50th=[ 527], 99.90th=[ 567], 99.95th=[ 575], | 99.99th=[ 575] bw ( KiB/s): min= 23, max= 208, per=24.90%, avg=81.18, stdev=36.48, samples=121 iops : min= 5, max= 52, avg=19.93, stdev= 9.16, samples=121 write: IOPS=21, BW=85.9KiB/s (87.9kB/s)(5256KiB/61214msec); 0 zone resets slat (usec): min=40, max=6551, avg=276.66, stdev=455.46 clat (msec): min=155, max=1025, avg=506.49, stdev=178.31 lat (msec): min=156, max=1025, avg=506.77, stdev=178.33 clat percentiles (msec): | 1.00th=[ 176], 5.00th=[ 251], 10.00th=[ 284], 20.00th=[ 338], | 30.00th=[ 397], 40.00th=[ 439], 50.00th=[ 498], 60.00th=[ 542], | 70.00th=[ 592], 80.00th=[ 659], 90.00th=[ 751], 95.00th=[ 835], | 99.00th=[ 961], 99.50th=[ 986], 99.90th=[ 1011], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 200, per=25.03%, avg=84.86, stdev=34.99, samples=121 iops : min= 1, max= 50, avg=20.84, stdev= 8.79, samples=121 lat (msec) : 10=0.08%, 20=0.12%, 50=0.27%, 100=0.55%, 250=29.73% lat (msec) : 500=43.52%, 750=20.70%, 1000=4.84%, 2000=0.20% cpu : usr=0.11%, sys=0.97%, ctx=4743, 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=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=149147: Wed May 20 17:39:42 2026 read: IOPS=20, BW=82.3KiB/s (84.3kB/s)(5060KiB/61473msec) slat (usec): min=1595, max=41829, avg=8762.45, stdev=5476.93 clat (msec): min=7, max=605, avg=243.24, stdev=87.72 lat (msec): min=9, max=619, avg=252.00, stdev=90.00 clat percentiles (msec): | 1.00th=[ 89], 5.00th=[ 131], 10.00th=[ 148], 20.00th=[ 174], | 30.00th=[ 190], 40.00th=[ 209], 50.00th=[ 230], 60.00th=[ 255], | 70.00th=[ 275], 80.00th=[ 309], 90.00th=[ 355], 95.00th=[ 405], | 99.00th=[ 535], 99.50th=[ 542], 99.90th=[ 584], 99.95th=[ 609], | 99.99th=[ 609] bw ( KiB/s): min= 8, max= 192, per=25.18%, avg=82.08, stdev=33.95, samples=122 iops : min= 2, max= 48, avg=20.15, stdev= 8.50, samples=122 write: IOPS=21, BW=84.3KiB/s (86.3kB/s)(5180KiB/61473msec); 0 zone resets slat (usec): min=41, max=7405, avg=298.04, stdev=503.37 clat (msec): min=125, max=1034, avg=511.10, stdev=176.48 lat (msec): min=125, max=1039, avg=511.40, stdev=176.49 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 262], 10.00th=[ 296], 20.00th=[ 347], | 30.00th=[ 397], 40.00th=[ 447], 50.00th=[ 502], 60.00th=[ 550], | 70.00th=[ 592], 80.00th=[ 659], 90.00th=[ 760], 95.00th=[ 818], | 99.00th=[ 986], 99.50th=[ 995], 99.90th=[ 1020], 99.95th=[ 1036], | 99.99th=[ 1036] bw ( KiB/s): min= 23, max= 192, per=24.64%, avg=83.54, stdev=31.69, samples=122 iops : min= 5, max= 48, avg=20.52, stdev= 7.97, samples=122 lat (msec) : 10=0.04%, 20=0.04%, 50=0.23%, 100=0.47%, 250=30.12% lat (msec) : 500=42.93%, 750=20.78%, 1000=5.16%, 2000=0.23% cpu : usr=0.12%, sys=0.98%, ctx=4909, 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=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=326KiB/s (334kB/s), 80.8KiB/s-82.3KiB/s (82.8kB/s-84.3kB/s), io=19.6MiB (20.5MB), run=61214-61550msec WRITE: bw=339KiB/s (348kB/s), 84.3KiB/s-85.9KiB/s (86.3kB/s-87.9kB/s), io=20.4MiB (21.4MB), run=61214-61550msec 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=149159: Wed May 20 17:39:46 2026 read: IOPS=5, BW=204MiB/s (214MB/s)(40.0MiB/196msec) slat (nsec): min=13451k, max=13451k, avg=13450521.00, stdev= 0.00 clat (nsec): min=172672k, max=172672k, avg=172671789.00, stdev= 0.00 lat (nsec): min=186127k, max=186127k, avg=186126747.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 174], 10.00th=[ 174], 20.00th=[ 174], | 30.00th=[ 174], 40.00th=[ 174], 50.00th=[ 174], 60.00th=[ 174], | 70.00th=[ 174], 80.00th=[ 174], 90.00th=[ 174], 95.00th=[ 174], | 99.00th=[ 174], 99.50th=[ 174], 99.90th=[ 174], 99.95th=[ 174], | 99.99th=[ 174] lat (msec) : 250=100.00% cpu : usr=0.00%, sys=6.15%, ctx=43, 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=204MiB/s (214MB/s), 204MiB/s-204MiB/s (214MB/s-214MB/s), io=40.0MiB (41.9MB), run=196-196msec 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