== sanity test 398c: run fio to test AIO ================= 03:16:49 (1787383009) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.442392 s, 94.8 MB/s osc.lustre-OST0000-osc-ffff9b3790daa000.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=146915: Sat Aug 22 03:19:26 2026 write: IOPS=17, BW=69.0KiB/s (70.7kB/s)(10.0MiB/148369msec); 0 zone resets slat (usec): min=49, max=20746, avg=328.17, stdev=994.37 clat (msec): min=174, max=1667, avg=925.97, stdev=235.66 lat (msec): min=174, max=1667, avg=926.30, stdev=235.65 clat percentiles (msec): | 1.00th=[ 259], 5.00th=[ 542], 10.00th=[ 659], 20.00th=[ 751], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 927], 60.00th=[ 978], | 70.00th=[ 1045], 80.00th=[ 1133], 90.00th=[ 1217], 95.00th=[ 1301], | 99.00th=[ 1452], 99.50th=[ 1519], 99.90th=[ 1670], 99.95th=[ 1670], | 99.99th=[ 1670] bw ( KiB/s): min= 7, max= 255, per=25.70%, avg=70.93, stdev=37.38, samples=284 iops : min= 1, max= 63, avg=17.24, stdev= 9.39, samples=284 lat (msec) : 250=0.62%, 500=3.32%, 750=16.02%, 1000=43.24%, 2000=36.80% cpu : usr=0.05%, sys=0.28%, ctx=1993, 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=146916: Sat Aug 22 03:19:26 2026 write: IOPS=17, BW=69.0KiB/s (70.7kB/s)(10.0MiB/148370msec); 0 zone resets slat (usec): min=51, max=12253, avg=291.67, stdev=734.56 clat (msec): min=241, max=1853, avg=925.98, stdev=236.43 lat (msec): min=242, max=1853, avg=926.27, stdev=236.43 clat percentiles (msec): | 1.00th=[ 257], 5.00th=[ 558], 10.00th=[ 659], 20.00th=[ 743], | 30.00th=[ 810], 40.00th=[ 869], 50.00th=[ 936], 60.00th=[ 986], | 70.00th=[ 1036], 80.00th=[ 1099], 90.00th=[ 1234], 95.00th=[ 1301], | 99.00th=[ 1452], 99.50th=[ 1519], 99.90th=[ 1821], 99.95th=[ 1821], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 254, per=25.00%, avg=68.99, stdev=31.06, samples=292 iops : min= 1, max= 63, avg=16.76, stdev= 7.77, samples=292 lat (msec) : 250=0.16%, 500=3.98%, 750=16.68%, 1000=41.84%, 2000=37.34% cpu : usr=0.05%, sys=0.31%, ctx=1920, 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=146917: Sat Aug 22 03:19:26 2026 write: IOPS=17, BW=69.0KiB/s (70.7kB/s)(10.0MiB/148373msec); 0 zone resets slat (usec): min=52, max=20973, avg=355.63, stdev=1062.84 clat (msec): min=60, max=1872, avg=926.51, stdev=244.15 lat (msec): min=60, max=1872, avg=926.86, stdev=244.11 clat percentiles (msec): | 1.00th=[ 251], 5.00th=[ 550], 10.00th=[ 659], 20.00th=[ 743], | 30.00th=[ 802], 40.00th=[ 869], 50.00th=[ 936], 60.00th=[ 986], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1217], 95.00th=[ 1318], | 99.00th=[ 1469], 99.50th=[ 1603], 99.90th=[ 1854], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 15, max= 207, per=24.89%, avg=68.69, stdev=29.19, samples=293 iops : min= 3, max= 51, avg=16.69, stdev= 7.30, samples=293 lat (msec) : 100=0.04%, 250=0.90%, 500=3.48%, 750=16.21%, 1000=42.62% lat (msec) : 2000=36.76% cpu : usr=0.06%, sys=0.35%, ctx=2313, 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=146918: Sat Aug 22 03:19:26 2026 write: IOPS=17, BW=69.1KiB/s (70.7kB/s)(10.0MiB/148224msec); 0 zone resets slat (usec): min=51, max=27672, avg=309.69, stdev=870.65 clat (msec): min=236, max=1951, avg=925.01, stdev=240.59 lat (msec): min=236, max=1951, avg=925.32, stdev=240.62 clat percentiles (msec): | 1.00th=[ 249], 5.00th=[ 542], 10.00th=[ 667], 20.00th=[ 743], | 30.00th=[ 802], 40.00th=[ 877], 50.00th=[ 936], 60.00th=[ 986], | 70.00th=[ 1036], 80.00th=[ 1116], 90.00th=[ 1217], 95.00th=[ 1301], | 99.00th=[ 1469], 99.50th=[ 1536], 99.90th=[ 1854], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 16, max= 254, per=24.99%, avg=68.97, stdev=27.91, samples=292 iops : min= 4, max= 63, avg=16.76, stdev= 6.97, samples=292 lat (msec) : 250=1.25%, 500=2.93%, 750=16.60%, 1000=41.48%, 2000=37.73% cpu : usr=0.05%, sys=0.31%, ctx=2047, 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=276KiB/s (283kB/s), 69.0KiB/s-69.1KiB/s (70.7kB/s-70.7kB/s), io=40.0MiB (41.9MB), run=148224-148373msec 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=146949: Sat Aug 22 03:21:13 2026 read: IOPS=12, BW=50.5KiB/s (51.7kB/s)(5048KiB/99934msec) slat (usec): min=97, max=56770, avg=13913.87, stdev=7468.42 clat (msec): min=9, max=1435, avg=396.55, stdev=113.50 lat (msec): min=9, max=1452, avg=410.47, stdev=114.94 clat percentiles (msec): | 1.00th=[ 159], 5.00th=[ 255], 10.00th=[ 284], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 388], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 477], 90.00th=[ 523], 95.00th=[ 567], | 99.00th=[ 667], 99.50th=[ 693], 99.90th=[ 1368], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 7, max= 111, per=25.15%, avg=50.30, stdev=23.38, samples=197 iops : min= 1, max= 27, avg=12.07, stdev= 5.86, samples=197 write: IOPS=12, BW=51.0KiB/s (53.2kB/s)(5192KiB/99934msec); 0 zone resets slat (usec): min=57, max=15896, avg=392.27, stdev=925.94 clat (msec): min=86, max=2041, avg=831.11, stdev=238.33 lat (msec): min=86, max=2043, avg=831.51, stdev=238.34 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 514], 10.00th=[ 558], 20.00th=[ 634], | 30.00th=[ 693], 40.00th=[ 760], 50.00th=[ 818], 60.00th=[ 869], | 70.00th=[ 936], 80.00th=[ 1003], 90.00th=[ 1116], 95.00th=[ 1250], | 99.00th=[ 1502], 99.50th=[ 1603], 99.90th=[ 2022], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 111, per=24.75%, avg=51.48, stdev=22.21, samples=197 iops : min= 1, max= 27, avg=12.36, stdev= 5.60, samples=197 lat (msec) : 10=0.08%, 20=0.12%, 50=0.12%, 100=0.16%, 250=2.07% lat (msec) : 500=41.88%, 750=24.06%, 1000=21.09%, 2000=10.27%, >=2000=0.16% cpu : usr=0.11%, sys=0.77%, ctx=4941, 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=146950: Sat Aug 22 03:21:13 2026 read: IOPS=12, BW=49.7KiB/s (50.9kB/s)(4976KiB/100169msec) slat (usec): min=3378, max=59246, avg=14127.19, stdev=7530.04 clat (msec): min=7, max=813, avg=392.77, stdev=93.87 lat (msec): min=18, max=825, avg=406.90, stdev=95.35 clat percentiles (msec): | 1.00th=[ 220], 5.00th=[ 255], 10.00th=[ 284], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 384], 60.00th=[ 405], | 70.00th=[ 430], 80.00th=[ 464], 90.00th=[ 518], 95.00th=[ 550], | 99.00th=[ 659], 99.50th=[ 684], 99.90th=[ 802], 99.95th=[ 818], | 99.99th=[ 818] bw ( KiB/s): min= 7, max= 135, per=24.62%, avg=49.25, stdev=23.54, samples=198 iops : min= 1, max= 33, avg=11.80, stdev= 5.90, samples=198 write: IOPS=13, BW=52.6KiB/s (53.8kB/s)(5264KiB/100169msec); 0 zone resets slat (usec): min=53, max=14212, avg=421.89, stdev=1029.40 clat (msec): min=292, max=1588, avg=830.92, stdev=218.32 lat (msec): min=294, max=1588, avg=831.35, stdev=218.33 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 510], 10.00th=[ 567], 20.00th=[ 642], | 30.00th=[ 709], 40.00th=[ 768], 50.00th=[ 818], 60.00th=[ 877], | 70.00th=[ 927], 80.00th=[ 1003], 90.00th=[ 1099], 95.00th=[ 1234], | 99.00th=[ 1469], 99.50th=[ 1485], 99.90th=[ 1552], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 8, max= 112, per=25.03%, avg=52.07, stdev=19.32, samples=198 iops : min= 2, max= 28, avg=12.51, stdev= 4.91, samples=198 lat (msec) : 10=0.04%, 100=0.12%, 250=1.91%, 500=42.03%, 750=23.44% lat (msec) : 1000=22.34%, 2000=10.12% cpu : usr=0.10%, sys=0.73%, ctx=4744, 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=146951: Sat Aug 22 03:21:13 2026 read: IOPS=12, BW=49.8KiB/s (50.9kB/s)(4984KiB/100171msec) slat (usec): min=3121, max=70357, avg=14102.41, stdev=7805.10 clat (msec): min=18, max=928, avg=393.88, stdev=94.02 lat (msec): min=25, max=938, avg=407.99, stdev=95.20 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 255], 10.00th=[ 284], 20.00th=[ 321], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 388], 60.00th=[ 409], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 523], 95.00th=[ 550], | 99.00th=[ 642], 99.50th=[ 659], 99.90th=[ 776], 99.95th=[ 927], | 99.99th=[ 927] bw ( KiB/s): min= 7, max= 111, per=24.63%, avg=49.27, stdev=23.48, samples=199 iops : min= 1, max= 27, avg=11.80, stdev= 5.86, samples=199 write: IOPS=13, BW=52.5KiB/s (53.7kB/s)(5256KiB/100171msec); 0 zone resets slat (usec): min=55, max=13327, avg=382.83, stdev=829.98 clat (msec): min=181, max=1601, avg=830.43, stdev=216.60 lat (msec): min=181, max=1602, avg=830.82, stdev=216.58 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 502], 10.00th=[ 558], 20.00th=[ 634], | 30.00th=[ 718], 40.00th=[ 776], 50.00th=[ 827], 60.00th=[ 869], | 70.00th=[ 936], 80.00th=[ 995], 90.00th=[ 1099], 95.00th=[ 1217], | 99.00th=[ 1435], 99.50th=[ 1485], 99.90th=[ 1552], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 15, max= 111, per=24.79%, avg=51.56, stdev=18.86, samples=199 iops : min= 3, max= 27, avg=12.38, stdev= 4.77, samples=199 lat (msec) : 20=0.04%, 100=0.12%, 250=1.95%, 500=42.54%, 750=22.23% lat (msec) : 1000=23.01%, 2000=10.12% cpu : usr=0.11%, sys=0.73%, ctx=4504, 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=146952: Sat Aug 22 03:21:13 2026 read: IOPS=12, BW=50.6KiB/s (51.8kB/s)(5060KiB/100030msec) slat (usec): min=2967, max=49061, avg=13371.44, stdev=7094.39 clat (msec): min=14, max=1124, avg=396.08, stdev=99.21 lat (msec): min=18, max=1140, avg=409.46, stdev=100.39 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 268], 10.00th=[ 288], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 405], | 70.00th=[ 435], 80.00th=[ 472], 90.00th=[ 523], 95.00th=[ 567], | 99.00th=[ 667], 99.50th=[ 701], 99.90th=[ 978], 99.95th=[ 1133], | 99.99th=[ 1133] bw ( KiB/s): min= 7, max= 127, per=25.08%, avg=50.16, stdev=23.33, samples=198 iops : min= 1, max= 31, avg=12.03, stdev= 5.83, samples=198 write: IOPS=12, BW=51.8KiB/s (53.0kB/s)(5180KiB/100030msec); 0 zone resets slat (usec): min=54, max=16468, avg=424.98, stdev=1025.98 clat (msec): min=291, max=1594, avg=833.16, stdev=218.01 lat (msec): min=293, max=1594, avg=833.59, stdev=218.03 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 506], 10.00th=[ 567], 20.00th=[ 642], | 30.00th=[ 709], 40.00th=[ 768], 50.00th=[ 827], 60.00th=[ 869], | 70.00th=[ 927], 80.00th=[ 995], 90.00th=[ 1099], 95.00th=[ 1250], | 99.00th=[ 1485], 99.50th=[ 1502], 99.90th=[ 1586], 99.95th=[ 1603], | 99.99th=[ 1603] bw ( KiB/s): min= 7, max= 101, per=24.61%, avg=51.18, stdev=19.11, samples=198 iops : min= 1, max= 25, avg=12.28, stdev= 4.80, samples=198 lat (msec) : 20=0.04%, 50=0.04%, 100=0.12%, 250=1.17%, 500=43.52% lat (msec) : 750=22.50%, 1000=23.01%, 2000=9.61% cpu : usr=0.11%, sys=0.75%, ctx=4722, 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=200KiB/s (205kB/s), 49.7KiB/s-50.6KiB/s (50.9kB/s-51.8kB/s), io=19.6MiB (20.5MB), run=99934-100171msec WRITE: bw=209KiB/s (214kB/s), 51.8KiB/s-52.6KiB/s (53.0kB/s-53.8kB/s), io=20.4MiB (21.4MB), run=99934-100171msec 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=146972: Sat Aug 22 03:21:24 2026 read: IOPS=2, BW=82.3MiB/s (86.3MB/s)(40.0MiB/486msec) slat (nsec): min=41187k, max=41187k, avg=41186750.00, stdev= 0.00 clat (nsec): min=421487k, max=421487k, avg=421487370.00, stdev= 0.00 lat (nsec): min=462678k, max=462678k, avg=462678200.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 422], 10.00th=[ 422], 20.00th=[ 422], | 30.00th=[ 422], 40.00th=[ 422], 50.00th=[ 422], 60.00th=[ 422], | 70.00th=[ 422], 80.00th=[ 422], 90.00th=[ 422], 95.00th=[ 422], | 99.00th=[ 422], 99.50th=[ 422], 99.90th=[ 422], 99.95th=[ 422], | 99.99th=[ 422] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=3.09%, ctx=44, 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=82.3MiB/s (86.3MB/s), 82.3MiB/s-82.3MiB/s (86.3MB/s-86.3MB/s), io=40.0MiB (41.9MB), run=486-486msec 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