== sanity test 398c: run fio to test AIO ================= 03:40:18 (1788766818) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.577935 s, 72.6 MB/s osc.lustre-OST0000-osc-ffff9dcb46ce2000.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=145724: Mon Sep 7 03:43:12 2026 write: IOPS=15, BW=62.5KiB/s (64.0kB/s)(10.0MiB/163756msec); 0 zone resets slat (usec): min=22, max=23180, avg=163.86, stdev=677.11 clat (msec): min=171, max=3397, avg=1022.52, stdev=360.42 lat (msec): min=171, max=3398, avg=1022.69, stdev=360.45 clat percentiles (msec): | 1.00th=[ 296], 5.00th=[ 592], 10.00th=[ 684], 20.00th=[ 760], | 30.00th=[ 827], 40.00th=[ 894], 50.00th=[ 961], 60.00th=[ 1036], | 70.00th=[ 1133], 80.00th=[ 1250], 90.00th=[ 1435], 95.00th=[ 1670], | 99.00th=[ 2198], 99.50th=[ 2500], 99.90th=[ 3339], 99.95th=[ 3406], | 99.99th=[ 3406] bw ( KiB/s): min= 7, max= 218, per=25.54%, avg=63.59, stdev=31.61, samples=316 iops : min= 1, max= 54, avg=15.43, stdev= 7.91, samples=316 lat (msec) : 250=0.62%, 500=2.38%, 750=14.80%, 1000=37.54%, 2000=42.62% lat (msec) : >=2000=2.03% cpu : usr=0.03%, sys=0.21%, ctx=1507, 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=145725: Mon Sep 7 03:43:12 2026 write: IOPS=15, BW=62.5KiB/s (63.0kB/s)(10.0MiB/163933msec); 0 zone resets slat (usec): min=24, max=21735, avg=217.05, stdev=902.05 clat (msec): min=118, max=2656, avg=1023.02, stdev=338.61 lat (msec): min=118, max=2656, avg=1023.24, stdev=338.64 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 609], 10.00th=[ 684], 20.00th=[ 768], | 30.00th=[ 835], 40.00th=[ 894], 50.00th=[ 961], 60.00th=[ 1036], | 70.00th=[ 1133], 80.00th=[ 1267], 90.00th=[ 1435], 95.00th=[ 1653], | 99.00th=[ 2140], 99.50th=[ 2299], 99.90th=[ 2500], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 7, max= 174, per=25.02%, avg=62.29, stdev=29.28, samples=323 iops : min= 1, max= 43, avg=15.08, stdev= 7.37, samples=323 lat (msec) : 250=0.35%, 500=2.81%, 750=13.83%, 1000=38.52%, 2000=42.93% lat (msec) : >=2000=1.56% cpu : usr=0.05%, sys=0.22%, ctx=2129, 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 rand-write: (groupid=0, jobs=1): err= 0: pid=145726: Mon Sep 7 03:43:12 2026 write: IOPS=15, BW=62.4KiB/s (63.9kB/s)(10.0MiB/164150msec); 0 zone resets slat (usec): min=21, max=15852, avg=178.26, stdev=751.09 clat (msec): min=237, max=2506, avg=1024.39, stdev=332.30 lat (msec): min=237, max=2506, avg=1024.57, stdev=332.32 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 625], 10.00th=[ 684], 20.00th=[ 768], | 30.00th=[ 835], 40.00th=[ 894], 50.00th=[ 969], 60.00th=[ 1045], | 70.00th=[ 1133], 80.00th=[ 1250], 90.00th=[ 1452], 95.00th=[ 1653], | 99.00th=[ 2056], 99.50th=[ 2232], 99.90th=[ 2500], 99.95th=[ 2500], | 99.99th=[ 2500] bw ( KiB/s): min= 7, max= 128, per=25.33%, avg=63.07, stdev=29.42, samples=319 iops : min= 1, max= 32, avg=15.28, stdev= 7.39, samples=319 lat (msec) : 250=0.62%, 500=1.88%, 750=14.49%, 1000=38.01%, 2000=43.59% lat (msec) : >=2000=1.41% cpu : usr=0.04%, sys=0.21%, ctx=1567, 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=145727: Mon Sep 7 03:43:12 2026 write: IOPS=15, BW=62.4KiB/s (63.9kB/s)(10.0MiB/164208msec); 0 zone resets slat (usec): min=23, max=24889, avg=173.32, stdev=701.97 clat (msec): min=276, max=2541, avg=1024.48, stdev=331.61 lat (msec): min=276, max=2542, avg=1024.66, stdev=331.61 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 625], 10.00th=[ 684], 20.00th=[ 768], | 30.00th=[ 835], 40.00th=[ 894], 50.00th=[ 961], 60.00th=[ 1028], | 70.00th=[ 1133], 80.00th=[ 1250], 90.00th=[ 1469], 95.00th=[ 1687], | 99.00th=[ 2123], 99.50th=[ 2232], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2534] bw ( KiB/s): min= 7, max= 142, per=25.10%, avg=62.50, stdev=30.05, samples=322 iops : min= 1, max= 35, avg=15.14, stdev= 7.57, samples=322 lat (msec) : 500=2.27%, 750=14.34%, 1000=39.49%, 2000=42.23%, >=2000=1.68% cpu : usr=0.05%, sys=0.20%, ctx=1681, 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=249KiB/s (255kB/s), 62.4KiB/s-62.5KiB/s (63.9kB/s-64.0kB/s), io=40.0MiB (41.9MB), run=163756-164208msec 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=145762: Mon Sep 7 03:45:19 2026 read: IOPS=11, BW=45.3KiB/s (46.4kB/s)(5048KiB/111358msec) slat (usec): min=2861, max=93767, avg=14914.70, stdev=8650.59 clat (msec): min=53, max=996, avg=428.21, stdev=124.14 lat (msec): min=61, max=1012, avg=443.14, stdev=125.86 clat percentiles (msec): | 1.00th=[ 169], 5.00th=[ 239], 10.00th=[ 284], 20.00th=[ 330], | 30.00th=[ 363], 40.00th=[ 397], 50.00th=[ 426], 60.00th=[ 447], | 70.00th=[ 477], 80.00th=[ 514], 90.00th=[ 575], 95.00th=[ 659], | 99.00th=[ 793], 99.50th=[ 852], 99.90th=[ 927], 99.95th=[ 995], | 99.99th=[ 995] bw ( KiB/s): min= 7, max= 112, per=25.04%, avg=45.08, stdev=23.50, samples=219 iops : min= 1, max= 28, avg=10.75, stdev= 5.91, samples=219 write: IOPS=11, BW=46.6KiB/s (47.7kB/s)(5192KiB/111358msec); 0 zone resets slat (usec): min=26, max=16206, avg=223.65, stdev=749.47 clat (msec): min=246, max=1809, avg=938.21, stdev=273.80 lat (msec): min=246, max=1809, avg=938.44, stdev=273.79 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 506], 10.00th=[ 600], 20.00th=[ 701], | 30.00th=[ 793], 40.00th=[ 860], 50.00th=[ 927], 60.00th=[ 995], | 70.00th=[ 1083], 80.00th=[ 1183], 90.00th=[ 1284], 95.00th=[ 1368], | 99.00th=[ 1603], 99.50th=[ 1770], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 112, per=24.68%, avg=46.15, stdev=21.30, samples=220 iops : min= 1, max= 28, avg=11.02, stdev= 5.32, samples=220 lat (msec) : 100=0.12%, 250=2.93%, 500=37.38%, 750=21.29%, 1000=18.44% lat (msec) : 2000=19.84% cpu : usr=0.10%, sys=0.60%, ctx=4331, 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=145763: Mon Sep 7 03:45:19 2026 read: IOPS=11, BW=44.7KiB/s (45.8kB/s)(4976KiB/111294msec) slat (usec): min=37, max=62495, avg=14971.20, stdev=8648.12 clat (msec): min=11, max=1006, avg=428.68, stdev=134.46 lat (msec): min=20, max=1012, avg=443.65, stdev=136.28 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 234], 10.00th=[ 279], 20.00th=[ 326], | 30.00th=[ 359], 40.00th=[ 393], 50.00th=[ 422], 60.00th=[ 447], | 70.00th=[ 481], 80.00th=[ 518], 90.00th=[ 584], 95.00th=[ 667], | 99.00th=[ 852], 99.50th=[ 953], 99.90th=[ 1003], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 134, per=25.14%, avg=45.26, stdev=24.22, samples=215 iops : min= 1, max= 33, avg=10.80, stdev= 6.10, samples=215 write: IOPS=11, BW=47.3KiB/s (48.4kB/s)(5264KiB/111294msec); 0 zone resets slat (usec): min=27, max=18625, avg=241.77, stdev=818.84 clat (msec): min=197, max=1855, avg=932.62, stdev=277.39 lat (msec): min=197, max=1856, avg=932.86, stdev=277.45 clat percentiles (msec): | 1.00th=[ 305], 5.00th=[ 481], 10.00th=[ 584], 20.00th=[ 701], | 30.00th=[ 785], 40.00th=[ 860], 50.00th=[ 919], 60.00th=[ 1003], | 70.00th=[ 1083], 80.00th=[ 1183], 90.00th=[ 1284], 95.00th=[ 1368], | 99.00th=[ 1620], 99.50th=[ 1787], 99.90th=[ 1821], 99.95th=[ 1854], | 99.99th=[ 1854] bw ( KiB/s): min= 7, max= 112, per=25.01%, avg=46.76, stdev=22.15, samples=220 iops : min= 1, max= 28, avg=11.17, stdev= 5.54, samples=220 lat (msec) : 20=0.04%, 50=0.12%, 100=0.35%, 250=2.85%, 500=36.25% lat (msec) : 750=21.05%, 1000=18.75%, 2000=20.59% cpu : usr=0.10%, sys=0.62%, ctx=4300, 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=145764: Mon Sep 7 03:45:19 2026 read: IOPS=11, BW=44.8KiB/s (45.9kB/s)(4984KiB/111158msec) slat (usec): min=2993, max=58644, avg=15078.56, stdev=8697.65 clat (msec): min=28, max=983, avg=425.89, stdev=131.14 lat (msec): min=43, max=999, avg=440.98, stdev=133.12 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 232], 10.00th=[ 279], 20.00th=[ 326], | 30.00th=[ 355], 40.00th=[ 384], 50.00th=[ 414], 60.00th=[ 443], | 70.00th=[ 485], 80.00th=[ 523], 90.00th=[ 584], 95.00th=[ 667], | 99.00th=[ 785], 99.50th=[ 869], 99.90th=[ 953], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 6, max= 127, per=24.93%, avg=44.88, stdev=23.55, samples=218 iops : min= 1, max= 31, avg=10.71, stdev= 5.92, samples=218 write: IOPS=11, BW=47.3KiB/s (48.4kB/s)(5256KiB/111158msec); 0 zone resets slat (usec): min=24, max=19894, avg=312.13, stdev=1209.95 clat (msec): min=287, max=1867, avg=931.99, stdev=270.38 lat (msec): min=287, max=1867, avg=932.31, stdev=270.41 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 489], 10.00th=[ 592], 20.00th=[ 709], | 30.00th=[ 785], 40.00th=[ 852], 50.00th=[ 919], 60.00th=[ 978], | 70.00th=[ 1070], 80.00th=[ 1167], 90.00th=[ 1284], 95.00th=[ 1368], | 99.00th=[ 1603], 99.50th=[ 1770], 99.90th=[ 1804], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 7, max= 120, per=24.89%, avg=46.54, stdev=20.78, samples=220 iops : min= 1, max= 30, avg=11.12, stdev= 5.23, samples=220 lat (msec) : 50=0.16%, 100=0.16%, 250=3.16%, 500=35.66%, 750=21.76% lat (msec) : 1000=19.96%, 2000=19.14% cpu : usr=0.09%, sys=0.61%, ctx=4710, 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=145765: Mon Sep 7 03:45:19 2026 read: IOPS=11, BW=45.5KiB/s (46.6kB/s)(5060KiB/111284msec) slat (usec): min=2633, max=73627, avg=14667.85, stdev=8725.36 clat (msec): min=13, max=933, avg=430.17, stdev=132.00 lat (msec): min=29, max=970, avg=444.85, stdev=133.98 clat percentiles (msec): | 1.00th=[ 144], 5.00th=[ 228], 10.00th=[ 275], 20.00th=[ 330], | 30.00th=[ 359], 40.00th=[ 388], 50.00th=[ 422], 60.00th=[ 451], | 70.00th=[ 485], 80.00th=[ 527], 90.00th=[ 600], 95.00th=[ 676], | 99.00th=[ 802], 99.50th=[ 827], 99.90th=[ 911], 99.95th=[ 936], | 99.99th=[ 936] bw ( KiB/s): min= 7, max= 142, per=25.41%, avg=45.75, stdev=21.89, samples=217 iops : min= 1, max= 35, avg=10.92, stdev= 5.51, samples=217 write: IOPS=11, BW=46.5KiB/s (47.7kB/s)(5180KiB/111284msec); 0 zone resets slat (usec): min=32, max=13268, avg=239.85, stdev=719.45 clat (msec): min=283, max=1870, avg=936.55, stdev=269.29 lat (msec): min=284, max=1870, avg=936.80, stdev=269.32 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 510], 10.00th=[ 592], 20.00th=[ 709], | 30.00th=[ 776], 40.00th=[ 852], 50.00th=[ 927], 60.00th=[ 995], | 70.00th=[ 1070], 80.00th=[ 1183], 90.00th=[ 1301], 95.00th=[ 1368], | 99.00th=[ 1586], 99.50th=[ 1754], 99.90th=[ 1854], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 7, max= 104, per=24.78%, avg=46.33, stdev=20.15, samples=218 iops : min= 1, max= 26, avg=11.07, stdev= 5.08, samples=218 lat (msec) : 20=0.04%, 50=0.12%, 100=0.12%, 250=3.36%, 500=35.16% lat (msec) : 750=22.50%, 1000=18.98%, 2000=19.73% cpu : usr=0.12%, sys=0.65%, ctx=4581, 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=180KiB/s (185kB/s), 44.7KiB/s-45.5KiB/s (45.8kB/s-46.6kB/s), io=19.6MiB (20.5MB), run=111158-111358msec WRITE: bw=188KiB/s (192kB/s), 46.5KiB/s-47.3KiB/s (47.7kB/s-48.4kB/s), io=20.4MiB (21.4MB), run=111158-111358msec 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=145785: Mon Sep 7 03:45:30 2026 read: IOPS=1, BW=56.3MiB/s (59.1MB/s)(40.0MiB/710msec) slat (nsec): min=35958k, max=35958k, avg=35957595.00, stdev= 0.00 clat (nsec): min=656704k, max=656704k, avg=656703793.00, stdev= 0.00 lat (nsec): min=692666k, max=692666k, avg=692666415.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 659], 5.00th=[ 659], 10.00th=[ 659], 20.00th=[ 659], | 30.00th=[ 659], 40.00th=[ 659], 50.00th=[ 659], 60.00th=[ 659], | 70.00th=[ 659], 80.00th=[ 659], 90.00th=[ 659], 95.00th=[ 659], | 99.00th=[ 659], 99.50th=[ 659], 99.90th=[ 659], 99.95th=[ 659], | 99.99th=[ 659] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.97%, ctx=25, 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=56.3MiB/s (59.1MB/s), 56.3MiB/s-56.3MiB/s (59.1MB/s-59.1MB/s), io=40.0MiB (41.9MB), run=710-710msec 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