== sanity test 398c: run fio to test AIO ================= 03:57:48 (1789459068) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.431246 s, 97.3 MB/s osc.lustre-OST0000-osc-ffff91f416987000.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=147490: Tue Sep 15 04:00:25 2026 write: IOPS=17, BW=68.7KiB/s (70.4kB/s)(10.0MiB/148971msec); 0 zone resets slat (usec): min=30, max=15900, avg=207.46, stdev=742.21 clat (msec): min=197, max=2067, avg=930.19, stdev=217.85 lat (msec): min=197, max=2068, avg=930.40, stdev=217.82 clat percentiles (msec): | 1.00th=[ 384], 5.00th=[ 575], 10.00th=[ 684], 20.00th=[ 785], | 30.00th=[ 844], 40.00th=[ 885], 50.00th=[ 927], 60.00th=[ 969], | 70.00th=[ 1020], 80.00th=[ 1083], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1603], 99.50th=[ 1636], 99.90th=[ 1754], 99.95th=[ 2072], | 99.99th=[ 2072] bw ( KiB/s): min= 8, max= 224, per=25.11%, avg=68.81, stdev=29.13, samples=293 iops : min= 2, max= 56, avg=16.81, stdev= 7.31, samples=293 lat (msec) : 250=0.23%, 500=3.32%, 750=12.66%, 1000=51.41%, 2000=32.30% lat (msec) : >=2000=0.08% cpu : usr=0.03%, sys=0.23%, ctx=2081, 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=147491: Tue Sep 15 04:00:25 2026 write: IOPS=17, BW=68.8KiB/s (70.5kB/s)(10.0MiB/148781msec); 0 zone resets slat (usec): min=22, max=40354, avg=222.19, stdev=1077.14 clat (msec): min=145, max=1967, avg=928.84, stdev=222.10 lat (msec): min=145, max=1968, avg=929.07, stdev=222.09 clat percentiles (msec): | 1.00th=[ 284], 5.00th=[ 575], 10.00th=[ 693], 20.00th=[ 776], | 30.00th=[ 835], 40.00th=[ 885], 50.00th=[ 927], 60.00th=[ 978], | 70.00th=[ 1020], 80.00th=[ 1083], 90.00th=[ 1183], 95.00th=[ 1284], | 99.00th=[ 1519], 99.50th=[ 1737], 99.90th=[ 1955], 99.95th=[ 1972], | 99.99th=[ 1972] bw ( KiB/s): min= 8, max= 199, per=25.32%, avg=69.36, stdev=27.41, samples=291 iops : min= 2, max= 49, avg=16.95, stdev= 6.87, samples=291 lat (msec) : 250=0.78%, 500=3.09%, 750=12.30%, 1000=49.88%, 2000=33.95% cpu : usr=0.04%, sys=0.23%, ctx=2019, 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=147492: Tue Sep 15 04:00:25 2026 write: IOPS=17, BW=69.0KiB/s (70.7kB/s)(10.0MiB/148370msec); 0 zone resets slat (usec): min=28, max=16420, avg=225.64, stdev=806.06 clat (msec): min=159, max=2044, avg=926.78, stdev=226.73 lat (msec): min=159, max=2044, avg=927.01, stdev=226.72 clat percentiles (msec): | 1.00th=[ 213], 5.00th=[ 542], 10.00th=[ 684], 20.00th=[ 768], | 30.00th=[ 827], 40.00th=[ 877], 50.00th=[ 927], 60.00th=[ 978], | 70.00th=[ 1028], 80.00th=[ 1099], 90.00th=[ 1183], 95.00th=[ 1267], | 99.00th=[ 1586], 99.50th=[ 1636], 99.90th=[ 1921], 99.95th=[ 2039], | 99.99th=[ 2039] bw ( KiB/s): min= 7, max= 256, per=24.95%, avg=68.37, stdev=30.38, samples=295 iops : min= 1, max= 64, avg=16.70, stdev= 7.61, samples=295 lat (msec) : 250=1.25%, 500=2.73%, 750=12.34%, 1000=48.75%, 2000=34.84% lat (msec) : >=2000=0.08% cpu : usr=0.04%, sys=0.23%, ctx=1906, 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=147493: Tue Sep 15 04:00:25 2026 write: IOPS=17, BW=68.7KiB/s (70.4kB/s)(10.0MiB/149013msec); 0 zone resets slat (usec): min=26, max=13652, avg=207.98, stdev=748.01 clat (msec): min=208, max=1866, avg=930.26, stdev=215.09 lat (msec): min=208, max=1866, avg=930.47, stdev=215.07 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 584], 10.00th=[ 684], 20.00th=[ 776], | 30.00th=[ 835], 40.00th=[ 877], 50.00th=[ 927], 60.00th=[ 978], | 70.00th=[ 1020], 80.00th=[ 1083], 90.00th=[ 1183], 95.00th=[ 1267], | 99.00th=[ 1519], 99.50th=[ 1653], 99.90th=[ 1787], 99.95th=[ 1871], | 99.99th=[ 1871] bw ( KiB/s): min= 8, max= 208, per=24.89%, avg=68.20, stdev=26.70, samples=296 iops : min= 2, max= 52, avg=16.66, stdev= 6.70, samples=296 lat (msec) : 250=0.23%, 500=3.28%, 750=11.56%, 1000=50.66%, 2000=34.26% cpu : usr=0.04%, sys=0.21%, ctx=1673, 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=275KiB/s (281kB/s), 68.7KiB/s-69.0KiB/s (70.4kB/s-70.7kB/s), io=40.0MiB (41.9MB), run=148370-149013msec 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=147525: Tue Sep 15 04:02:12 2026 read: IOPS=12, BW=51.5KiB/s (52.8kB/s)(5048KiB/97987msec) slat (usec): min=36, max=45506, avg=12884.53, stdev=6932.11 clat (msec): min=15, max=1616, avg=390.02, stdev=121.03 lat (msec): min=22, max=1628, avg=402.91, stdev=121.78 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 236], 10.00th=[ 271], 20.00th=[ 309], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 405], | 70.00th=[ 430], 80.00th=[ 468], 90.00th=[ 514], 95.00th=[ 550], | 99.00th=[ 642], 99.50th=[ 693], 99.90th=[ 1536], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 7, max= 150, per=25.28%, avg=51.33, stdev=23.92, samples=193 iops : min= 1, max= 37, avg=12.38, stdev= 6.01, samples=193 write: IOPS=13, BW=52.0KiB/s (54.3kB/s)(5192KiB/97987msec); 0 zone resets slat (usec): min=33, max=14661, avg=264.09, stdev=870.73 clat (msec): min=135, max=2011, avg=814.51, stdev=221.90 lat (msec): min=135, max=2011, avg=814.78, stdev=221.94 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 502], 10.00th=[ 550], 20.00th=[ 625], | 30.00th=[ 684], 40.00th=[ 743], 50.00th=[ 802], 60.00th=[ 852], | 70.00th=[ 902], 80.00th=[ 986], 90.00th=[ 1099], 95.00th=[ 1200], | 99.00th=[ 1351], 99.50th=[ 1502], 99.90th=[ 1921], 99.95th=[ 2005], | 99.99th=[ 2005] bw ( KiB/s): min= 8, max= 104, per=24.99%, avg=52.73, stdev=20.48, samples=193 iops : min= 2, max= 26, avg=12.73, stdev= 5.11, samples=193 lat (msec) : 20=0.08%, 50=0.23%, 100=0.27%, 250=3.24%, 500=41.91% lat (msec) : 750=24.22%, 1000=20.16%, 2000=9.84%, >=2000=0.04% cpu : usr=0.11%, sys=0.59%, ctx=4933, 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=147526: Tue Sep 15 04:02:12 2026 read: IOPS=12, BW=50.4KiB/s (51.6kB/s)(4976KiB/98714msec) slat (usec): min=2621, max=56530, avg=13078.86, stdev=7055.55 clat (msec): min=14, max=703, avg=386.90, stdev=92.23 lat (msec): min=27, max=734, avg=399.99, stdev=93.05 clat percentiles (msec): | 1.00th=[ 184], 5.00th=[ 245], 10.00th=[ 275], 20.00th=[ 313], | 30.00th=[ 338], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 409], | 70.00th=[ 430], 80.00th=[ 464], 90.00th=[ 506], 95.00th=[ 542], | 99.00th=[ 609], 99.50th=[ 625], 99.90th=[ 684], 99.95th=[ 701], | 99.99th=[ 701] bw ( KiB/s): min= 7, max= 112, per=24.61%, avg=49.95, stdev=23.35, samples=195 iops : min= 1, max= 28, avg=12.03, stdev= 5.89, samples=195 write: IOPS=13, BW=53.3KiB/s (54.6kB/s)(5264KiB/98714msec); 0 zone resets slat (usec): min=33, max=19780, avg=283.38, stdev=977.37 clat (msec): min=251, max=1493, avg=819.47, stdev=210.62 lat (msec): min=252, max=1493, avg=819.75, stdev=210.60 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 506], 10.00th=[ 558], 20.00th=[ 634], | 30.00th=[ 693], 40.00th=[ 751], 50.00th=[ 810], 60.00th=[ 860], | 70.00th=[ 919], 80.00th=[ 986], 90.00th=[ 1099], 95.00th=[ 1200], | 99.00th=[ 1351], 99.50th=[ 1385], 99.90th=[ 1485], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 7, max= 111, per=25.03%, avg=52.82, stdev=19.16, samples=196 iops : min= 1, max= 27, avg=12.74, stdev= 4.78, samples=196 lat (msec) : 20=0.04%, 50=0.12%, 100=0.08%, 250=2.73%, 500=42.46% lat (msec) : 750=23.44%, 1000=21.72%, 2000=9.41% cpu : usr=0.09%, sys=0.60%, ctx=4777, 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=147527: Tue Sep 15 04:02:12 2026 read: IOPS=12, BW=50.5KiB/s (51.8kB/s)(4984KiB/98602msec) slat (usec): min=1822, max=47966, avg=13028.19, stdev=6946.33 clat (msec): min=21, max=685, avg=389.13, stdev=92.85 lat (msec): min=28, max=706, avg=402.17, stdev=93.70 clat percentiles (msec): | 1.00th=[ 155], 5.00th=[ 243], 10.00th=[ 275], 20.00th=[ 317], | 30.00th=[ 342], 40.00th=[ 368], 50.00th=[ 384], 60.00th=[ 409], | 70.00th=[ 435], 80.00th=[ 464], 90.00th=[ 510], 95.00th=[ 550], | 99.00th=[ 625], 99.50th=[ 634], 99.90th=[ 651], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 8, max= 112, per=24.63%, avg=50.00, stdev=22.03, samples=196 iops : min= 2, max= 28, avg=12.05, stdev= 5.54, samples=196 write: IOPS=13, BW=53.3KiB/s (54.6kB/s)(5256KiB/98602msec); 0 zone resets slat (usec): min=29, max=10926, avg=210.57, stdev=523.23 clat (msec): min=232, max=1406, avg=816.64, stdev=209.74 lat (msec): min=233, max=1406, avg=816.85, stdev=209.75 clat percentiles (msec): | 1.00th=[ 418], 5.00th=[ 510], 10.00th=[ 558], 20.00th=[ 625], | 30.00th=[ 684], 40.00th=[ 751], 50.00th=[ 802], 60.00th=[ 860], | 70.00th=[ 919], 80.00th=[ 986], 90.00th=[ 1099], 95.00th=[ 1200], | 99.00th=[ 1318], 99.50th=[ 1385], 99.90th=[ 1385], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 7, max= 103, per=24.89%, avg=52.51, stdev=20.14, samples=196 iops : min= 1, max= 25, avg=12.67, stdev= 5.05, samples=196 lat (msec) : 50=0.12%, 100=0.20%, 250=2.50%, 500=42.50%, 750=23.91% lat (msec) : 1000=21.33%, 2000=9.45% cpu : usr=0.09%, sys=0.56%, ctx=4947, 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=147528: Tue Sep 15 04:02:12 2026 read: IOPS=12, BW=51.6KiB/s (52.8kB/s)(5060KiB/98123msec) slat (usec): min=2259, max=58220, avg=12873.57, stdev=6882.65 clat (msec): min=38, max=1494, avg=387.03, stdev=103.55 lat (msec): min=45, max=1505, avg=399.91, stdev=104.52 clat percentiles (msec): | 1.00th=[ 194], 5.00th=[ 247], 10.00th=[ 268], 20.00th=[ 313], | 30.00th=[ 342], 40.00th=[ 359], 50.00th=[ 380], 60.00th=[ 401], | 70.00th=[ 426], 80.00th=[ 456], 90.00th=[ 506], 95.00th=[ 542], | 99.00th=[ 642], 99.50th=[ 667], 99.90th=[ 1485], 99.95th=[ 1502], | 99.99th=[ 1502] bw ( KiB/s): min= 7, max= 112, per=25.85%, avg=52.47, stdev=21.19, samples=190 iops : min= 1, max= 28, avg=12.66, stdev= 5.36, samples=190 write: IOPS=13, BW=52.8KiB/s (54.1kB/s)(5180KiB/98123msec); 0 zone resets slat (usec): min=33, max=7543, avg=214.18, stdev=514.40 clat (msec): min=324, max=2062, avg=817.98, stdev=227.68 lat (msec): min=324, max=2063, avg=818.20, stdev=227.70 clat percentiles (msec): | 1.00th=[ 422], 5.00th=[ 506], 10.00th=[ 558], 20.00th=[ 625], | 30.00th=[ 676], 40.00th=[ 743], 50.00th=[ 802], 60.00th=[ 860], | 70.00th=[ 911], 80.00th=[ 986], 90.00th=[ 1099], 95.00th=[ 1200], | 99.00th=[ 1401], 99.50th=[ 2039], 99.90th=[ 2056], 99.95th=[ 2056], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 128, per=24.88%, avg=52.50, stdev=20.46, samples=193 iops : min= 1, max= 32, avg=12.67, stdev= 5.11, samples=193 lat (msec) : 50=0.04%, 100=0.08%, 250=2.73%, 500=43.67%, 750=23.75% lat (msec) : 1000=20.39%, 2000=9.06%, >=2000=0.27% cpu : usr=0.09%, sys=0.56%, ctx=4709, 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=203KiB/s (208kB/s), 50.4KiB/s-51.6KiB/s (51.6kB/s-52.8kB/s), io=19.6MiB (20.5MB), run=97987-98714msec WRITE: bw=212KiB/s (217kB/s), 52.8KiB/s-53.3KiB/s (54.1kB/s-54.6kB/s), io=20.4MiB (21.4MB), run=97987-98714msec 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=147558: Tue Sep 15 04:02:23 2026 read: IOPS=2, BW=80.6MiB/s (84.6MB/s)(40.0MiB/496msec) slat (nsec): min=18128k, max=18128k, avg=18127533.00, stdev= 0.00 clat (nsec): min=461383k, max=461383k, avg=461383095.00, stdev= 0.00 lat (nsec): min=479516k, max=479516k, avg=479516142.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 464], 10.00th=[ 464], 20.00th=[ 464], | 30.00th=[ 464], 40.00th=[ 464], 50.00th=[ 464], 60.00th=[ 464], | 70.00th=[ 464], 80.00th=[ 464], 90.00th=[ 464], 95.00th=[ 464], | 99.00th=[ 464], 99.50th=[ 464], 99.90th=[ 464], 99.95th=[ 464], | 99.99th=[ 464] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.22%, ctx=43, 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=80.6MiB/s (84.6MB/s), 80.6MiB/s-80.6MiB/s (84.6MB/s-84.6MB/s), io=40.0MiB (41.9MB), run=496-496msec 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