== sanity test 398c: run fio to test AIO ================= 18:27:29 (1773613649) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.455628 s, 92.1 MB/s osc.lustre-OST0000-osc-ffff98f4477dc000.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=148469: Sun Mar 15 18:30:13 2026 write: IOPS=16, BW=65.8KiB/s (67.4kB/s)(10.0MiB/155516msec); 0 zone resets slat (usec): min=38, max=17635, avg=242.85, stdev=861.34 clat (msec): min=145, max=2761, avg=971.30, stdev=288.30 lat (msec): min=145, max=2761, avg=971.55, stdev=288.30 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 575], 10.00th=[ 693], 20.00th=[ 776], | 30.00th=[ 844], 40.00th=[ 894], 50.00th=[ 944], 60.00th=[ 986], | 70.00th=[ 1045], 80.00th=[ 1116], 90.00th=[ 1284], 95.00th=[ 1452], | 99.00th=[ 2056], 99.50th=[ 2400], 99.90th=[ 2635], 99.95th=[ 2635], | 99.99th=[ 2769] bw ( KiB/s): min= 7, max= 128, per=25.81%, avg=67.87, stdev=28.30, samples=297 iops : min= 1, max= 32, avg=16.57, stdev= 7.10, samples=297 lat (msec) : 250=0.62%, 500=1.45%, 750=13.79%, 1000=47.23%, 2000=35.82% lat (msec) : >=2000=1.09% cpu : usr=0.04%, sys=0.26%, ctx=2221, 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=148470: Sun Mar 15 18:30:13 2026 write: IOPS=16, BW=65.9KiB/s (67.5kB/s)(10.0MiB/155436msec); 0 zone resets slat (usec): min=35, max=15956, avg=214.63, stdev=699.85 clat (msec): min=302, max=2705, avg=970.22, stdev=284.51 lat (msec): min=303, max=2705, avg=970.43, stdev=284.54 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 567], 10.00th=[ 693], 20.00th=[ 776], | 30.00th=[ 835], 40.00th=[ 885], 50.00th=[ 936], 60.00th=[ 978], | 70.00th=[ 1045], 80.00th=[ 1133], 90.00th=[ 1301], 95.00th=[ 1452], | 99.00th=[ 2022], 99.50th=[ 2333], 99.90th=[ 2702], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 7, max= 128, per=26.08%, avg=68.59, stdev=33.08, samples=294 iops : min= 1, max= 32, avg=16.73, stdev= 8.28, samples=294 lat (msec) : 500=3.24%, 750=12.62%, 1000=47.81%, 2000=35.27%, >=2000=1.05% cpu : usr=0.04%, sys=0.23%, ctx=1719, 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=148471: Sun Mar 15 18:30:13 2026 write: IOPS=16, BW=65.8KiB/s (67.4kB/s)(10.0MiB/155514msec); 0 zone resets slat (usec): min=33, max=14829, avg=248.48, stdev=864.96 clat (msec): min=79, max=2705, avg=970.83, stdev=280.99 lat (msec): min=80, max=2705, avg=971.08, stdev=281.02 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 592], 10.00th=[ 693], 20.00th=[ 776], | 30.00th=[ 835], 40.00th=[ 894], 50.00th=[ 944], 60.00th=[ 986], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1284], 95.00th=[ 1418], | 99.00th=[ 2005], 99.50th=[ 2433], 99.90th=[ 2668], 99.95th=[ 2668], | 99.99th=[ 2702] bw ( KiB/s): min= 7, max= 248, per=25.52%, avg=67.12, stdev=30.12, samples=300 iops : min= 1, max= 62, avg=16.37, stdev= 7.57, samples=300 lat (msec) : 100=0.08%, 500=3.28%, 750=12.62%, 1000=46.21%, 2000=36.84% lat (msec) : >=2000=0.98% cpu : usr=0.04%, sys=0.25%, ctx=2380, 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=148472: Sun Mar 15 18:30:13 2026 write: IOPS=16, BW=65.8KiB/s (67.4kB/s)(10.0MiB/155511msec); 0 zone resets slat (usec): min=36, max=17247, avg=288.80, stdev=1044.56 clat (msec): min=105, max=2761, avg=970.83, stdev=289.34 lat (msec): min=106, max=2761, avg=971.12, stdev=289.36 clat percentiles (msec): | 1.00th=[ 451], 5.00th=[ 550], 10.00th=[ 684], 20.00th=[ 776], | 30.00th=[ 827], 40.00th=[ 894], 50.00th=[ 944], 60.00th=[ 986], | 70.00th=[ 1045], 80.00th=[ 1133], 90.00th=[ 1284], 95.00th=[ 1452], | 99.00th=[ 2022], 99.50th=[ 2467], 99.90th=[ 2769], 99.95th=[ 2769], | 99.99th=[ 2769] bw ( KiB/s): min= 8, max= 141, per=24.96%, avg=65.65, stdev=29.10, samples=307 iops : min= 2, max= 35, avg=16.00, stdev= 7.29, samples=307 lat (msec) : 250=0.55%, 500=1.84%, 750=14.34%, 1000=45.51%, 2000=36.76% lat (msec) : >=2000=1.02% cpu : usr=0.04%, sys=0.27%, ctx=2209, 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=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=263KiB/s (270kB/s), 65.8KiB/s-65.9KiB/s (67.4kB/s-67.5kB/s), io=40.0MiB (41.9MB), run=155436-155516msec 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=148504: Sun Mar 15 18:32:10 2026 read: IOPS=11, BW=47.0KiB/s (48.2kB/s)(5048KiB/107308msec) slat (usec): min=54, max=65255, avg=14748.60, stdev=8751.22 clat (msec): min=13, max=880, avg=419.90, stdev=118.38 lat (msec): min=17, max=898, avg=434.66, stdev=119.93 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 255], 10.00th=[ 288], 20.00th=[ 330], | 30.00th=[ 359], 40.00th=[ 384], 50.00th=[ 409], 60.00th=[ 439], | 70.00th=[ 472], 80.00th=[ 506], 90.00th=[ 567], 95.00th=[ 625], | 99.00th=[ 785], 99.50th=[ 835], 99.90th=[ 869], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7, max= 127, per=25.15%, avg=46.78, stdev=22.80, samples=212 iops : min= 1, max= 31, avg=11.22, stdev= 5.76, samples=212 write: IOPS=12, BW=48.4KiB/s (49.5kB/s)(5192KiB/107308msec); 0 zone resets slat (usec): min=41, max=19607, avg=354.03, stdev=1180.75 clat (msec): min=150, max=2214, avg=899.08, stdev=279.05 lat (msec): min=150, max=2214, avg=899.44, stdev=279.02 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 502], 10.00th=[ 575], 20.00th=[ 659], | 30.00th=[ 743], 40.00th=[ 810], 50.00th=[ 869], 60.00th=[ 936], | 70.00th=[ 1020], 80.00th=[ 1133], 90.00th=[ 1267], 95.00th=[ 1368], | 99.00th=[ 1620], 99.50th=[ 2005], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 128, per=24.68%, avg=47.64, stdev=20.31, samples=213 iops : min= 1, max= 32, avg=11.44, stdev= 5.11, samples=213 lat (msec) : 20=0.12%, 50=0.16%, 100=0.27%, 250=1.84%, 500=38.28% lat (msec) : 750=23.63%, 1000=19.38%, 2000=16.05%, >=2000=0.27% cpu : usr=0.09%, sys=0.65%, ctx=4481, 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=148505: Sun Mar 15 18:32:10 2026 read: IOPS=11, BW=46.2KiB/s (47.3kB/s)(4976KiB/107778msec) slat (usec): min=2883, max=62783, avg=14570.22, stdev=8006.71 clat (msec): min=24, max=889, avg=421.00, stdev=113.27 lat (msec): min=33, max=916, avg=435.57, stdev=114.43 clat percentiles (msec): | 1.00th=[ 188], 5.00th=[ 266], 10.00th=[ 292], 20.00th=[ 334], | 30.00th=[ 359], 40.00th=[ 384], 50.00th=[ 405], 60.00th=[ 439], | 70.00th=[ 468], 80.00th=[ 514], 90.00th=[ 567], 95.00th=[ 609], | 99.00th=[ 785], 99.50th=[ 835], 99.90th=[ 877], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 7, max= 120, per=24.69%, avg=45.92, stdev=22.51, samples=212 iops : min= 1, max= 30, avg=11.01, stdev= 5.69, samples=212 write: IOPS=12, BW=48.8KiB/s (50.0kB/s)(5264KiB/107778msec); 0 zone resets slat (usec): min=41, max=14345, avg=301.31, stdev=897.15 clat (msec): min=303, max=2219, avg=896.08, stdev=272.80 lat (msec): min=303, max=2220, avg=896.39, stdev=272.82 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 498], 10.00th=[ 567], 20.00th=[ 667], | 30.00th=[ 743], 40.00th=[ 802], 50.00th=[ 877], 60.00th=[ 927], | 70.00th=[ 1011], 80.00th=[ 1133], 90.00th=[ 1250], 95.00th=[ 1368], | 99.00th=[ 1653], 99.50th=[ 1888], 99.90th=[ 2056], 99.95th=[ 2232], | 99.99th=[ 2232] bw ( KiB/s): min= 7, max= 112, per=25.13%, avg=48.50, stdev=20.20, samples=213 iops : min= 1, max= 28, avg=11.65, stdev= 5.07, samples=213 lat (msec) : 50=0.23%, 100=0.08%, 250=1.45%, 500=38.28%, 750=24.02% lat (msec) : 1000=19.69%, 2000=16.13%, >=2000=0.12% cpu : usr=0.08%, sys=0.66%, ctx=4173, 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=148506: Sun Mar 15 18:32:10 2026 read: IOPS=11, BW=46.3KiB/s (47.4kB/s)(4984KiB/107655msec) slat (usec): min=2544, max=61883, avg=14974.10, stdev=8407.91 clat (msec): min=10, max=893, avg=426.86, stdev=117.86 lat (msec): min=16, max=918, avg=441.84, stdev=119.35 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 266], 10.00th=[ 292], 20.00th=[ 334], | 30.00th=[ 363], 40.00th=[ 393], 50.00th=[ 414], 60.00th=[ 443], | 70.00th=[ 477], 80.00th=[ 523], 90.00th=[ 575], 95.00th=[ 625], | 99.00th=[ 785], 99.50th=[ 827], 99.90th=[ 894], 99.95th=[ 894], | 99.99th=[ 894] bw ( KiB/s): min= 7, max= 120, per=24.95%, avg=46.40, stdev=20.59, samples=211 iops : min= 1, max= 30, avg=11.13, stdev= 5.18, samples=211 write: IOPS=12, BW=48.8KiB/s (49.0kB/s)(5256KiB/107655msec); 0 zone resets slat (usec): min=46, max=17896, avg=331.82, stdev=968.51 clat (msec): min=310, max=2205, avg=888.62, stdev=276.03 lat (msec): min=310, max=2206, avg=888.96, stdev=276.02 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 498], 10.00th=[ 575], 20.00th=[ 659], | 30.00th=[ 735], 40.00th=[ 802], 50.00th=[ 860], 60.00th=[ 919], | 70.00th=[ 995], 80.00th=[ 1083], 90.00th=[ 1250], 95.00th=[ 1368], | 99.00th=[ 1737], 99.50th=[ 2005], 99.90th=[ 2198], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 114, per=24.87%, avg=48.00, stdev=20.41, samples=214 iops : min= 1, max= 28, avg=11.53, stdev= 5.12, samples=214 lat (msec) : 20=0.04%, 50=0.16%, 100=0.12%, 250=1.48%, 500=37.27% lat (msec) : 750=25.62%, 1000=20.23%, 2000=14.80%, >=2000=0.27% cpu : usr=0.08%, sys=0.59%, ctx=4665, 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=148507: Sun Mar 15 18:32:10 2026 read: IOPS=11, BW=47.1KiB/s (48.2kB/s)(5060KiB/107428msec) slat (usec): min=2999, max=55166, avg=15228.19, stdev=8479.78 clat (msec): min=15, max=901, avg=426.47, stdev=119.71 lat (msec): min=25, max=936, avg=441.70, stdev=121.18 clat percentiles (msec): | 1.00th=[ 174], 5.00th=[ 271], 10.00th=[ 296], 20.00th=[ 330], | 30.00th=[ 359], 40.00th=[ 388], 50.00th=[ 418], 60.00th=[ 443], | 70.00th=[ 477], 80.00th=[ 518], 90.00th=[ 575], 95.00th=[ 634], | 99.00th=[ 827], 99.50th=[ 852], 99.90th=[ 902], 99.95th=[ 902], | 99.99th=[ 902] bw ( KiB/s): min= 8, max= 96, per=25.37%, avg=47.20, stdev=19.31, samples=210 iops : min= 2, max= 24, avg=11.33, stdev= 4.85, samples=210 write: IOPS=12, BW=48.2KiB/s (49.4kB/s)(5180KiB/107428msec); 0 zone resets slat (usec): min=54, max=17854, avg=337.60, stdev=1118.24 clat (msec): min=223, max=2203, avg=892.84, stdev=274.71 lat (msec): min=223, max=2203, avg=893.18, stdev=274.74 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 506], 10.00th=[ 567], 20.00th=[ 659], | 30.00th=[ 743], 40.00th=[ 802], 50.00th=[ 869], 60.00th=[ 927], | 70.00th=[ 1011], 80.00th=[ 1099], 90.00th=[ 1267], 95.00th=[ 1385], | 99.00th=[ 1754], 99.50th=[ 1871], 99.90th=[ 2039], 99.95th=[ 2198], | 99.99th=[ 2198] bw ( KiB/s): min= 7, max= 119, per=24.70%, avg=47.67, stdev=20.97, samples=213 iops : min= 1, max= 29, avg=11.45, stdev= 5.30, samples=213 lat (msec) : 20=0.08%, 50=0.16%, 100=0.16%, 250=1.21%, 500=37.62% lat (msec) : 750=25.66%, 1000=19.34%, 2000=15.70%, >=2000=0.08% cpu : usr=0.10%, sys=0.82%, ctx=4982, 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=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=186KiB/s (191kB/s), 46.2KiB/s-47.1KiB/s (47.3kB/s-48.2kB/s), io=19.6MiB (20.5MB), run=107308-107778msec WRITE: bw=194KiB/s (198kB/s), 48.2KiB/s-48.8KiB/s (49.4kB/s-50.0kB/s), io=20.4MiB (21.4MB), run=107308-107778msec 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=148539: Sun Mar 15 18:32:23 2026 read: IOPS=1, BW=51.1MiB/s (53.6MB/s)(40.0MiB/783msec) slat (nsec): min=30555k, max=30555k, avg=30555476.00, stdev= 0.00 clat (nsec): min=729375k, max=729375k, avg=729374784.00, stdev= 0.00 lat (nsec): min=759934k, max=759934k, avg=759934292.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 726], 5.00th=[ 726], 10.00th=[ 726], 20.00th=[ 726], | 30.00th=[ 726], 40.00th=[ 726], 50.00th=[ 726], 60.00th=[ 726], | 70.00th=[ 726], 80.00th=[ 726], 90.00th=[ 726], 95.00th=[ 726], | 99.00th=[ 726], 99.50th=[ 726], 99.90th=[ 726], 99.95th=[ 726], | 99.99th=[ 726] lat (msec) : 750=100.00% cpu : usr=0.13%, sys=1.79%, ctx=5, majf=0, minf=9 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=51.1MiB/s (53.6MB/s), 51.1MiB/s-51.1MiB/s (53.6MB/s-53.6MB/s), io=40.0MiB (41.9MB), run=783-783msec 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