== sanity test 398c: run fio to test AIO ================= 18:06:45 (1786831605) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.694652 s, 60.4 MB/s osc.lustre-OST0000-osc-ffff8d21e7030000.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=146097: Sat Aug 15 18:09:18 2026 write: IOPS=17, BW=71.8KiB/s (73.5kB/s)(10.0MiB/142699msec); 0 zone resets slat (usec): min=35, max=15246, avg=253.75, stdev=814.69 clat (msec): min=279, max=1984, avg=890.64, stdev=249.93 lat (msec): min=279, max=1984, avg=890.89, stdev=249.94 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 567], 10.00th=[ 634], 20.00th=[ 709], | 30.00th=[ 768], 40.00th=[ 810], 50.00th=[ 852], 60.00th=[ 911], | 70.00th=[ 961], 80.00th=[ 1045], 90.00th=[ 1200], 95.00th=[ 1368], | 99.00th=[ 1720], 99.50th=[ 1871], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 7, max= 135, per=24.96%, avg=71.62, stdev=30.33, samples=282 iops : min= 1, max= 33, avg=17.52, stdev= 7.61, samples=282 lat (msec) : 500=2.73%, 750=25.16%, 1000=47.11%, 2000=25.00% cpu : usr=0.06%, sys=0.29%, ctx=2064, 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=146098: Sat Aug 15 18:09:18 2026 write: IOPS=18, BW=72.0KiB/s (73.7kB/s)(10.0MiB/142195msec); 0 zone resets slat (usec): min=36, max=19804, avg=212.87, stdev=748.20 clat (msec): min=131, max=2421, avg=887.99, stdev=262.47 lat (msec): min=132, max=2421, avg=888.20, stdev=262.47 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 550], 10.00th=[ 617], 20.00th=[ 701], | 30.00th=[ 751], 40.00th=[ 802], 50.00th=[ 844], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 1053], 90.00th=[ 1234], 95.00th=[ 1418], | 99.00th=[ 1687], 99.50th=[ 1838], 99.90th=[ 2005], 99.95th=[ 2198], | 99.99th=[ 2433] bw ( KiB/s): min= 7, max= 256, per=25.22%, avg=72.38, stdev=33.11, samples=279 iops : min= 1, max= 64, avg=17.71, stdev= 8.30, samples=279 lat (msec) : 250=0.70%, 500=2.85%, 750=25.62%, 1000=45.70%, 2000=25.00% lat (msec) : >=2000=0.12% cpu : usr=0.05%, sys=0.26%, ctx=1547, 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=146099: Sat Aug 15 18:09:18 2026 write: IOPS=17, BW=71.8KiB/s (73.5kB/s)(10.0MiB/142702msec); 0 zone resets slat (usec): min=36, max=20319, avg=226.21, stdev=765.03 clat (msec): min=279, max=1983, avg=890.58, stdev=251.61 lat (msec): min=279, max=1983, avg=890.80, stdev=251.61 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 550], 10.00th=[ 634], 20.00th=[ 701], | 30.00th=[ 760], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 911], | 70.00th=[ 961], 80.00th=[ 1045], 90.00th=[ 1217], 95.00th=[ 1368], | 99.00th=[ 1737], 99.50th=[ 1905], 99.90th=[ 1921], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 7, max= 128, per=25.22%, avg=72.38, stdev=31.15, samples=279 iops : min= 1, max= 32, avg=17.72, stdev= 7.82, samples=279 lat (msec) : 500=2.73%, 750=25.31%, 1000=47.77%, 2000=24.18% cpu : usr=0.05%, sys=0.27%, ctx=1818, 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=146100: Sat Aug 15 18:09:18 2026 write: IOPS=17, BW=71.8KiB/s (73.5kB/s)(10.0MiB/142663msec); 0 zone resets slat (usec): min=36, max=20872, avg=249.92, stdev=890.78 clat (msec): min=242, max=2004, avg=890.45, stdev=251.80 lat (msec): min=242, max=2004, avg=890.70, stdev=251.80 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 567], 10.00th=[ 634], 20.00th=[ 701], | 30.00th=[ 760], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 911], | 70.00th=[ 961], 80.00th=[ 1045], 90.00th=[ 1217], 95.00th=[ 1368], | 99.00th=[ 1737], 99.50th=[ 1905], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 2005] bw ( KiB/s): min= 8, max= 176, per=25.04%, avg=71.86, stdev=24.91, samples=281 iops : min= 2, max= 44, avg=17.58, stdev= 6.27, samples=281 lat (msec) : 250=0.12%, 500=3.20%, 750=24.14%, 1000=47.73%, 2000=24.77% lat (msec) : >=2000=0.04% cpu : usr=0.06%, sys=0.30%, ctx=2138, 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 Run status group 0 (all jobs): WRITE: bw=287KiB/s (294kB/s), 71.8KiB/s-72.0KiB/s (73.5kB/s-73.7kB/s), io=40.0MiB (41.9MB), run=142195-142702msec 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=146131: Sat Aug 15 18:11:07 2026 read: IOPS=12, BW=50.3KiB/s (51.6kB/s)(5048KiB/100267msec) slat (usec): min=2520, max=63956, avg=13760.62, stdev=7806.76 clat (msec): min=12, max=777, avg=387.51, stdev=94.37 lat (msec): min=44, max=782, avg=401.27, stdev=95.46 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 253], 10.00th=[ 279], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 401], | 70.00th=[ 426], 80.00th=[ 460], 90.00th=[ 506], 95.00th=[ 550], | 99.00th=[ 634], 99.50th=[ 709], 99.90th=[ 751], 99.95th=[ 776], | 99.99th=[ 776] bw ( KiB/s): min= 7, max= 136, per=25.04%, avg=50.09, stdev=23.25, samples=198 iops : min= 1, max= 34, avg=12.09, stdev= 5.84, samples=198 write: IOPS=12, BW=51.8KiB/s (53.0kB/s)(5192KiB/100267msec); 0 zone resets slat (usec): min=39, max=22018, avg=321.88, stdev=1032.98 clat (msec): min=324, max=1558, avg=842.04, stdev=226.69 lat (msec): min=325, max=1558, avg=842.37, stdev=226.73 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 518], 10.00th=[ 567], 20.00th=[ 651], | 30.00th=[ 709], 40.00th=[ 768], 50.00th=[ 810], 60.00th=[ 869], | 70.00th=[ 944], 80.00th=[ 1028], 90.00th=[ 1150], 95.00th=[ 1284], | 99.00th=[ 1485], 99.50th=[ 1502], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 8, max= 103, per=24.75%, avg=51.48, stdev=21.48, samples=198 iops : min= 2, max= 25, avg=12.44, stdev= 5.42, samples=198 lat (msec) : 20=0.04%, 50=0.12%, 100=0.31%, 250=1.80%, 500=43.95% lat (msec) : 750=22.15%, 1000=20.12%, 2000=11.52% cpu : usr=0.07%, sys=0.71%, ctx=4669, 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=146132: Sat Aug 15 18:11:07 2026 read: IOPS=12, BW=49.6KiB/s (50.8kB/s)(4976KiB/100325msec) slat (usec): min=87, max=76540, avg=13752.93, stdev=7839.40 clat (msec): min=10, max=714, avg=394.66, stdev=89.69 lat (msec): min=12, max=728, avg=408.42, stdev=90.78 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 266], 10.00th=[ 292], 20.00th=[ 330], | 30.00th=[ 351], 40.00th=[ 372], 50.00th=[ 388], 60.00th=[ 409], | 70.00th=[ 430], 80.00th=[ 468], 90.00th=[ 510], 95.00th=[ 550], | 99.00th=[ 625], 99.50th=[ 651], 99.90th=[ 709], 99.95th=[ 718], | 99.99th=[ 718] bw ( KiB/s): min= 7, max= 103, per=24.65%, avg=49.30, stdev=21.27, samples=198 iops : min= 1, max= 25, avg=11.90, stdev= 5.36, samples=198 write: IOPS=13, BW=52.5KiB/s (53.7kB/s)(5264KiB/100325msec); 0 zone resets slat (usec): min=39, max=22030, avg=316.36, stdev=924.65 clat (msec): min=175, max=1553, avg=832.44, stdev=229.03 lat (msec): min=175, max=1553, avg=832.76, stdev=229.02 clat percentiles (msec): | 1.00th=[ 372], 5.00th=[ 514], 10.00th=[ 567], 20.00th=[ 651], | 30.00th=[ 701], 40.00th=[ 751], 50.00th=[ 810], 60.00th=[ 860], | 70.00th=[ 927], 80.00th=[ 1011], 90.00th=[ 1133], 95.00th=[ 1284], | 99.00th=[ 1452], 99.50th=[ 1485], 99.90th=[ 1536], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 7, max= 118, per=24.98%, avg=51.96, stdev=21.33, samples=199 iops : min= 1, max= 29, avg=12.56, stdev= 5.32, samples=199 lat (msec) : 20=0.08%, 50=0.12%, 100=0.12%, 250=1.84%, 500=42.70% lat (msec) : 750=24.18%, 1000=20.00%, 2000=10.98% cpu : usr=0.09%, sys=0.66%, ctx=4656, 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=146133: Sat Aug 15 18:11:07 2026 read: IOPS=12, BW=49.7KiB/s (50.9kB/s)(4984KiB/100270msec) slat (usec): min=2652, max=66156, avg=13956.43, stdev=7974.12 clat (msec): min=6, max=727, avg=389.39, stdev=92.45 lat (msec): min=20, max=742, avg=403.35, stdev=93.83 clat percentiles (msec): | 1.00th=[ 171], 5.00th=[ 251], 10.00th=[ 279], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 388], 60.00th=[ 409], | 70.00th=[ 430], 80.00th=[ 464], 90.00th=[ 510], 95.00th=[ 542], | 99.00th=[ 609], 99.50th=[ 676], 99.90th=[ 718], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 110, per=24.92%, avg=49.85, stdev=21.03, samples=197 iops : min= 1, max= 27, avg=12.04, stdev= 5.28, samples=197 write: IOPS=13, BW=52.4KiB/s (53.7kB/s)(5256KiB/100270msec); 0 zone resets slat (usec): min=39, max=16472, avg=313.30, stdev=1025.63 clat (msec): min=260, max=1561, avg=835.19, stdev=222.66 lat (msec): min=260, max=1562, avg=835.51, stdev=222.67 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 514], 10.00th=[ 575], 20.00th=[ 651], | 30.00th=[ 701], 40.00th=[ 751], 50.00th=[ 818], 60.00th=[ 860], | 70.00th=[ 927], 80.00th=[ 1011], 90.00th=[ 1133], 95.00th=[ 1250], | 99.00th=[ 1452], 99.50th=[ 1485], 99.90th=[ 1552], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 8, max= 111, per=25.12%, avg=52.25, stdev=19.30, samples=197 iops : min= 2, max= 27, avg=12.63, stdev= 4.83, samples=197 lat (msec) : 10=0.04%, 20=0.04%, 50=0.08%, 100=0.31%, 250=1.76% lat (msec) : 500=43.05%, 750=23.20%, 1000=20.82%, 2000=10.70% cpu : usr=0.11%, sys=0.69%, ctx=4594, 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=146134: Sat Aug 15 18:11:07 2026 read: IOPS=12, BW=50.9KiB/s (52.1kB/s)(5060KiB/99478msec) slat (usec): min=2898, max=64130, avg=13925.53, stdev=8027.94 clat (msec): min=21, max=888, avg=389.63, stdev=96.80 lat (msec): min=29, max=896, avg=403.57, stdev=97.83 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 253], 10.00th=[ 275], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 359], 50.00th=[ 380], 60.00th=[ 401], | 70.00th=[ 426], 80.00th=[ 464], 90.00th=[ 518], 95.00th=[ 550], | 99.00th=[ 642], 99.50th=[ 693], 99.90th=[ 877], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7, max= 119, per=25.49%, avg=50.99, stdev=21.41, samples=195 iops : min= 1, max= 29, avg=12.31, stdev= 5.38, samples=195 write: IOPS=13, BW=52.1KiB/s (53.3kB/s)(5180KiB/99478msec); 0 zone resets slat (usec): min=41, max=15337, avg=300.82, stdev=808.81 clat (msec): min=272, max=1521, avg=831.81, stdev=217.79 lat (msec): min=272, max=1521, avg=832.11, stdev=217.79 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 514], 10.00th=[ 575], 20.00th=[ 651], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 810], 60.00th=[ 860], | 70.00th=[ 927], 80.00th=[ 1003], 90.00th=[ 1116], 95.00th=[ 1250], | 99.00th=[ 1435], 99.50th=[ 1469], 99.90th=[ 1502], 99.95th=[ 1519], | 99.99th=[ 1519] bw ( KiB/s): min= 7, max= 119, per=24.95%, avg=51.89, stdev=21.88, samples=196 iops : min= 1, max= 29, avg=12.54, stdev= 5.50, samples=196 lat (msec) : 50=0.23%, 100=0.16%, 250=2.03%, 500=42.58%, 750=24.57% lat (msec) : 1000=19.92%, 2000=10.51% cpu : usr=0.10%, sys=0.73%, ctx=4616, 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=200KiB/s (205kB/s), 49.6KiB/s-50.9KiB/s (50.8kB/s-52.1kB/s), io=19.6MiB (20.5MB), run=99478-100325msec WRITE: bw=208KiB/s (213kB/s), 51.8KiB/s-52.5KiB/s (53.0kB/s-53.7kB/s), io=20.4MiB (21.4MB), run=99478-100325msec 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=146153: Sat Aug 15 18:11:17 2026 read: IOPS=1, BW=68.3MiB/s (71.6MB/s)(40.0MiB/586msec) slat (nsec): min=61361k, max=61361k, avg=61360689.00, stdev= 0.00 clat (nsec): min=487673k, max=487673k, avg=487672624.00, stdev= 0.00 lat (nsec): min=549039k, max=549039k, avg=549039003.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 489], 5.00th=[ 489], 10.00th=[ 489], 20.00th=[ 489], | 30.00th=[ 489], 40.00th=[ 489], 50.00th=[ 489], 60.00th=[ 489], | 70.00th=[ 489], 80.00th=[ 489], 90.00th=[ 489], 95.00th=[ 489], | 99.00th=[ 489], 99.50th=[ 489], 99.90th=[ 489], 99.95th=[ 489], | 99.99th=[ 489] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.56%, ctx=16, 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=68.3MiB/s (71.6MB/s), 68.3MiB/s-68.3MiB/s (71.6MB/s-71.6MB/s), io=40.0MiB (41.9MB), run=586-586msec 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