== sanity test 398c: run fio to test AIO ================= 08:07:36 (1787400456) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.716442 s, 58.5 MB/s osc.lustre-OST0000-osc-ffff93d6118ea800.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=145573: Sat Aug 22 08:10:35 2026 write: IOPS=15, BW=60.5KiB/s (61.9kB/s)(10.0MiB/169270msec); 0 zone resets slat (usec): min=51, max=24085, avg=592.99, stdev=1618.59 clat (msec): min=199, max=2207, avg=1056.50, stdev=288.92 lat (msec): min=199, max=2207, avg=1057.10, stdev=288.92 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 625], 10.00th=[ 743], 20.00th=[ 844], | 30.00th=[ 911], 40.00th=[ 978], 50.00th=[ 1028], 60.00th=[ 1099], | 70.00th=[ 1183], 80.00th=[ 1284], 90.00th=[ 1401], 95.00th=[ 1519], | 99.00th=[ 1905], 99.50th=[ 2022], 99.90th=[ 2165], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 255, per=24.90%, avg=60.01, stdev=24.58, samples=334 iops : min= 1, max= 63, avg=14.40, stdev= 6.15, samples=334 lat (msec) : 250=0.62%, 500=2.66%, 750=7.58%, 1000=33.44%, 2000=55.00% lat (msec) : >=2000=0.70% cpu : usr=0.07%, sys=0.45%, ctx=2267, 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=145574: Sat Aug 22 08:10:35 2026 write: IOPS=15, BW=60.5KiB/s (61.9kB/s)(10.0MiB/169297msec); 0 zone resets slat (usec): min=48, max=21647, avg=525.61, stdev=1359.15 clat (msec): min=215, max=2085, avg=1056.76, stdev=287.05 lat (msec): min=216, max=2085, avg=1057.29, stdev=287.02 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 625], 10.00th=[ 735], 20.00th=[ 844], | 30.00th=[ 919], 40.00th=[ 978], 50.00th=[ 1036], 60.00th=[ 1116], | 70.00th=[ 1183], 80.00th=[ 1267], 90.00th=[ 1418], 95.00th=[ 1536], | 99.00th=[ 1871], 99.50th=[ 1989], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2089] bw ( KiB/s): min= 7, max= 255, per=25.37%, avg=61.15, stdev=29.34, samples=328 iops : min= 1, max= 63, avg=14.69, stdev= 7.35, samples=328 lat (msec) : 250=0.62%, 500=2.62%, 750=7.77%, 1000=33.01%, 2000=55.51% lat (msec) : >=2000=0.47% cpu : usr=0.07%, sys=0.36%, ctx=2297, 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=145575: Sat Aug 22 08:10:35 2026 write: IOPS=15, BW=60.6KiB/s (62.1kB/s)(10.0MiB/168968msec); 0 zone resets slat (usec): min=51, max=21644, avg=537.33, stdev=1372.85 clat (msec): min=109, max=2200, avg=1055.01, stdev=290.24 lat (msec): min=110, max=2200, avg=1055.56, stdev=290.24 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 634], 10.00th=[ 743], 20.00th=[ 835], | 30.00th=[ 911], 40.00th=[ 978], 50.00th=[ 1036], 60.00th=[ 1099], | 70.00th=[ 1183], 80.00th=[ 1267], 90.00th=[ 1418], 95.00th=[ 1536], | 99.00th=[ 1871], 99.50th=[ 1972], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 191, per=24.98%, avg=60.21, stdev=28.24, samples=333 iops : min= 1, max= 47, avg=14.46, stdev= 7.10, samples=333 lat (msec) : 250=0.51%, 500=2.70%, 750=7.58%, 1000=33.79%, 2000=55.12% lat (msec) : >=2000=0.31% cpu : usr=0.07%, sys=0.40%, ctx=2462, 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=145576: Sat Aug 22 08:10:35 2026 write: IOPS=15, BW=60.5KiB/s (61.0kB/s)(10.0MiB/169168msec); 0 zone resets slat (usec): min=51, max=22594, avg=522.08, stdev=1350.84 clat (msec): min=80, max=2065, avg=1055.85, stdev=286.35 lat (msec): min=80, max=2065, avg=1056.38, stdev=286.35 clat percentiles (msec): | 1.00th=[ 300], 5.00th=[ 625], 10.00th=[ 743], 20.00th=[ 844], | 30.00th=[ 919], 40.00th=[ 978], 50.00th=[ 1036], 60.00th=[ 1099], | 70.00th=[ 1183], 80.00th=[ 1284], 90.00th=[ 1401], 95.00th=[ 1536], | 99.00th=[ 1871], 99.50th=[ 1955], 99.90th=[ 2039], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 7, max= 231, per=24.92%, avg=60.06, stdev=29.07, samples=334 iops : min= 1, max= 57, avg=14.42, stdev= 7.30, samples=334 lat (msec) : 100=0.08%, 250=0.70%, 500=2.38%, 750=7.23%, 1000=33.95% lat (msec) : 2000=55.35%, >=2000=0.31% cpu : usr=0.06%, sys=0.40%, ctx=2160, 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=242KiB/s (248kB/s), 60.5KiB/s-60.6KiB/s (61.9kB/s-62.1kB/s), io=40.0MiB (41.9MB), run=168968-169297msec 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=145610: Sat Aug 22 08:12:33 2026 read: IOPS=11, BW=46.3KiB/s (47.4kB/s)(5048KiB/109013msec) slat (usec): min=3775, max=60412, avg=15303.61, stdev=7981.31 clat (msec): min=44, max=808, avg=421.41, stdev=105.98 lat (msec): min=61, max=845, avg=436.73, stdev=107.54 clat percentiles (msec): | 1.00th=[ 230], 5.00th=[ 275], 10.00th=[ 300], 20.00th=[ 338], | 30.00th=[ 363], 40.00th=[ 388], 50.00th=[ 414], 60.00th=[ 439], | 70.00th=[ 468], 80.00th=[ 502], 90.00th=[ 558], 95.00th=[ 609], | 99.00th=[ 735], 99.50th=[ 751], 99.90th=[ 785], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 127, per=24.96%, avg=45.93, stdev=21.70, samples=215 iops : min= 1, max= 31, avg=10.89, stdev= 5.44, samples=215 write: IOPS=11, BW=47.6KiB/s (48.8kB/s)(5192KiB/109013msec); 0 zone resets slat (usec): min=57, max=24074, avg=657.78, stdev=1566.42 clat (msec): min=329, max=1778, avg=915.62, stdev=241.39 lat (msec): min=330, max=1778, avg=916.29, stdev=241.38 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 558], 10.00th=[ 625], 20.00th=[ 709], | 30.00th=[ 776], 40.00th=[ 835], 50.00th=[ 885], 60.00th=[ 953], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1250], 95.00th=[ 1368], | 99.00th=[ 1552], 99.50th=[ 1620], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 104, per=24.51%, avg=46.82, stdev=19.73, samples=216 iops : min= 1, max= 26, avg=11.11, stdev= 4.96, samples=216 lat (msec) : 50=0.04%, 100=0.31%, 250=0.82%, 500=39.10%, 750=21.60% lat (msec) : 1000=21.37%, 2000=16.76% cpu : usr=0.11%, sys=0.92%, ctx=5131, 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=145611: Sat Aug 22 08:12:33 2026 read: IOPS=11, BW=45.6KiB/s (46.7kB/s)(4976KiB/109039msec) slat (usec): min=3640, max=52826, avg=15301.68, stdev=7575.74 clat (msec): min=16, max=800, avg=421.71, stdev=109.43 lat (msec): min=31, max=839, avg=437.02, stdev=110.74 clat percentiles (msec): | 1.00th=[ 114], 5.00th=[ 264], 10.00th=[ 292], 20.00th=[ 338], | 30.00th=[ 363], 40.00th=[ 393], 50.00th=[ 418], 60.00th=[ 443], | 70.00th=[ 472], 80.00th=[ 506], 90.00th=[ 558], 95.00th=[ 609], | 99.00th=[ 701], 99.50th=[ 726], 99.90th=[ 776], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 111, per=24.72%, avg=45.48, stdev=21.02, samples=213 iops : min= 1, max= 27, avg=10.77, stdev= 5.28, samples=213 write: IOPS=12, BW=48.3KiB/s (49.4kB/s)(5264KiB/109039msec); 0 zone resets slat (usec): min=56, max=19195, avg=733.69, stdev=1578.23 clat (msec): min=186, max=1807, avg=909.22, stdev=251.32 lat (msec): min=186, max=1808, avg=909.96, stdev=251.34 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 558], 10.00th=[ 625], 20.00th=[ 693], | 30.00th=[ 760], 40.00th=[ 818], 50.00th=[ 869], 60.00th=[ 936], | 70.00th=[ 1011], 80.00th=[ 1116], 90.00th=[ 1267], 95.00th=[ 1401], | 99.00th=[ 1569], 99.50th=[ 1636], 99.90th=[ 1737], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 104, per=24.92%, avg=47.60, stdev=19.35, samples=215 iops : min= 1, max= 26, avg=11.31, stdev= 4.88, samples=215 lat (msec) : 20=0.04%, 50=0.20%, 100=0.23%, 250=1.48%, 500=37.42% lat (msec) : 750=23.75%, 1000=20.59%, 2000=16.29% cpu : usr=0.13%, sys=0.96%, ctx=5165, 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=145612: Sat Aug 22 08:12:33 2026 read: IOPS=11, BW=45.8KiB/s (46.9kB/s)(4984KiB/108795msec) slat (usec): min=90, max=69559, avg=14983.98, stdev=7713.56 clat (msec): min=23, max=968, avg=421.77, stdev=111.61 lat (msec): min=23, max=980, avg=436.77, stdev=113.13 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 271], 10.00th=[ 300], 20.00th=[ 338], | 30.00th=[ 359], 40.00th=[ 384], 50.00th=[ 409], 60.00th=[ 439], | 70.00th=[ 468], 80.00th=[ 506], 90.00th=[ 575], 95.00th=[ 625], | 99.00th=[ 718], 99.50th=[ 760], 99.90th=[ 827], 99.95th=[ 969], | 99.99th=[ 969] bw ( KiB/s): min= 7, max= 127, per=24.69%, avg=45.44, stdev=22.29, samples=215 iops : min= 1, max= 31, avg=10.77, stdev= 5.56, samples=215 write: IOPS=12, BW=48.3KiB/s (49.5kB/s)(5256KiB/108795msec); 0 zone resets slat (usec): min=50, max=23682, avg=674.87, stdev=1545.39 clat (msec): min=182, max=1804, avg=909.00, stdev=247.65 lat (msec): min=183, max=1804, avg=909.68, stdev=247.64 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 550], 10.00th=[ 625], 20.00th=[ 693], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 877], 60.00th=[ 944], | 70.00th=[ 1011], 80.00th=[ 1116], 90.00th=[ 1267], 95.00th=[ 1385], | 99.00th=[ 1536], 99.50th=[ 1636], 99.90th=[ 1787], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 103, per=25.00%, avg=47.75, stdev=20.28, samples=214 iops : min= 1, max= 25, avg=11.35, stdev= 5.11, samples=214 lat (msec) : 50=0.23%, 100=0.27%, 250=0.90%, 500=38.09%, 750=23.16% lat (msec) : 1000=21.29%, 2000=16.05% cpu : usr=0.13%, sys=0.94%, ctx=4955, 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=145613: Sat Aug 22 08:12:33 2026 read: IOPS=11, BW=46.4KiB/s (47.6kB/s)(5060KiB/108941msec) slat (usec): min=3397, max=59437, avg=15501.24, stdev=8062.39 clat (msec): min=38, max=807, avg=423.61, stdev=107.17 lat (msec): min=46, max=842, avg=439.13, stdev=108.81 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 271], 10.00th=[ 305], 20.00th=[ 342], | 30.00th=[ 363], 40.00th=[ 388], 50.00th=[ 414], 60.00th=[ 439], | 70.00th=[ 468], 80.00th=[ 506], 90.00th=[ 567], 95.00th=[ 617], | 99.00th=[ 743], 99.50th=[ 751], 99.90th=[ 793], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 110, per=25.06%, avg=46.10, stdev=20.89, samples=215 iops : min= 1, max= 27, avg=10.93, stdev= 5.23, samples=215 write: IOPS=11, BW=47.5KiB/s (48.7kB/s)(5180KiB/108941msec); 0 zone resets slat (usec): min=58, max=15134, avg=698.39, stdev=1366.80 clat (msec): min=330, max=1620, avg=913.46, stdev=247.03 lat (msec): min=332, max=1621, avg=914.17, stdev=247.06 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 558], 10.00th=[ 617], 20.00th=[ 701], | 30.00th=[ 768], 40.00th=[ 827], 50.00th=[ 885], 60.00th=[ 944], | 70.00th=[ 1020], 80.00th=[ 1116], 90.00th=[ 1267], 95.00th=[ 1385], | 99.00th=[ 1536], 99.50th=[ 1586], 99.90th=[ 1620], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7, max= 95, per=24.58%, avg=46.95, stdev=19.76, samples=215 iops : min= 1, max= 23, avg=11.15, stdev= 4.96, samples=215 lat (msec) : 50=0.08%, 100=0.31%, 250=0.70%, 500=39.38%, 750=22.42% lat (msec) : 1000=20.47%, 2000=16.64% cpu : usr=0.12%, sys=1.00%, ctx=5121, 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=184KiB/s (188kB/s), 45.6KiB/s-46.4KiB/s (46.7kB/s-47.6kB/s), io=19.6MiB (20.5MB), run=108795-109039msec WRITE: bw=192KiB/s (196kB/s), 47.5KiB/s-48.3KiB/s (48.7kB/s-49.5kB/s), io=20.4MiB (21.4MB), run=108795-109039msec 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=145632: Sat Aug 22 08:12:40 2026 read: IOPS=2, BW=86.0MiB/s (90.2MB/s)(40.0MiB/465msec) slat (nsec): min=32436k, max=32436k, avg=32436422.00, stdev= 0.00 clat (nsec): min=406282k, max=406282k, avg=406282060.00, stdev= 0.00 lat (nsec): min=438724k, max=438724k, avg=438723737.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 405], 10.00th=[ 405], 20.00th=[ 405], | 30.00th=[ 405], 40.00th=[ 405], 50.00th=[ 405], 60.00th=[ 405], | 70.00th=[ 405], 80.00th=[ 405], 90.00th=[ 405], 95.00th=[ 405], | 99.00th=[ 405], 99.50th=[ 405], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 405] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=3.23%, 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=86.0MiB/s (90.2MB/s), 86.0MiB/s-86.0MiB/s (90.2MB/s-90.2MB/s), io=40.0MiB (41.9MB), run=465-465msec 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