== sanity test 398c: run fio to test AIO ================= 10:03:09 (1787752989) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.419238 s, 100 MB/s osc.lustre-OST0000-osc-ffff9dff10068000.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=144905: Wed Aug 26 10:06:40 2026 write: IOPS=12, BW=51.5KiB/s (52.7kB/s)(10.0MiB/198852msec); 0 zone resets slat (usec): min=29, max=26962, avg=372.95, stdev=1381.88 clat (msec): min=73, max=2384, avg=1241.35, stdev=341.05 lat (msec): min=74, max=2384, avg=1241.73, stdev=341.07 clat percentiles (msec): | 1.00th=[ 531], 5.00th=[ 701], 10.00th=[ 835], 20.00th=[ 961], | 30.00th=[ 1045], 40.00th=[ 1133], 50.00th=[ 1200], 60.00th=[ 1301], | 70.00th=[ 1401], 80.00th=[ 1536], 90.00th=[ 1720], 95.00th=[ 1838], | 99.00th=[ 2056], 99.50th=[ 2140], 99.90th=[ 2366], 99.95th=[ 2366], | 99.99th=[ 2400] bw ( KiB/s): min= 7, max= 128, per=26.03%, avg=53.36, stdev=29.10, samples=376 iops : min= 1, max= 32, avg=12.80, stdev= 7.29, samples=376 lat (msec) : 100=0.04%, 500=0.27%, 750=5.86%, 1000=17.97%, 2000=74.18% lat (msec) : >=2000=1.68% cpu : usr=0.06%, sys=0.26%, ctx=1915, 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=144906: Wed Aug 26 10:06:40 2026 write: IOPS=12, BW=51.5KiB/s (52.8kB/s)(10.0MiB/198751msec); 0 zone resets slat (usec): min=28, max=40242, avg=413.34, stdev=1792.86 clat (msec): min=180, max=2380, avg=1241.25, stdev=341.84 lat (msec): min=180, max=2380, avg=1241.67, stdev=341.92 clat percentiles (msec): | 1.00th=[ 527], 5.00th=[ 718], 10.00th=[ 860], 20.00th=[ 969], | 30.00th=[ 1045], 40.00th=[ 1133], 50.00th=[ 1217], 60.00th=[ 1301], | 70.00th=[ 1418], 80.00th=[ 1519], 90.00th=[ 1703], 95.00th=[ 1854], | 99.00th=[ 2089], 99.50th=[ 2140], 99.90th=[ 2299], 99.95th=[ 2299], | 99.99th=[ 2366] bw ( KiB/s): min= 7, max= 128, per=26.16%, avg=53.62, stdev=29.90, samples=374 iops : min= 1, max= 32, avg=12.86, stdev= 7.49, samples=374 lat (msec) : 250=0.62%, 500=0.04%, 750=4.65%, 1000=19.34%, 2000=72.85% lat (msec) : >=2000=2.50% cpu : usr=0.05%, sys=0.27%, ctx=1908, 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=144907: Wed Aug 26 10:06:40 2026 write: IOPS=12, BW=51.5KiB/s (52.8kB/s)(10.0MiB/198750msec); 0 zone resets slat (usec): min=28, max=17644, avg=346.21, stdev=1197.14 clat (msec): min=324, max=2379, avg=1240.96, stdev=339.54 lat (msec): min=324, max=2379, avg=1241.31, stdev=339.58 clat percentiles (msec): | 1.00th=[ 518], 5.00th=[ 709], 10.00th=[ 860], 20.00th=[ 961], | 30.00th=[ 1053], 40.00th=[ 1116], 50.00th=[ 1217], 60.00th=[ 1318], | 70.00th=[ 1401], 80.00th=[ 1519], 90.00th=[ 1687], 95.00th=[ 1838], | 99.00th=[ 2072], 99.50th=[ 2140], 99.90th=[ 2333], 99.95th=[ 2333], | 99.99th=[ 2366] bw ( KiB/s): min= 7, max= 128, per=26.15%, avg=53.62, stdev=25.67, samples=374 iops : min= 1, max= 32, avg=12.85, stdev= 6.47, samples=374 lat (msec) : 500=0.62%, 750=5.20%, 1000=18.52%, 2000=73.36%, >=2000=2.30% cpu : usr=0.07%, sys=0.26%, ctx=1774, 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=144908: Wed Aug 26 10:06:40 2026 write: IOPS=12, BW=51.5KiB/s (52.7kB/s)(10.0MiB/198850msec); 0 zone resets slat (usec): min=28, max=29320, avg=375.08, stdev=1417.70 clat (msec): min=358, max=2317, avg=1241.34, stdev=339.91 lat (msec): min=358, max=2318, avg=1241.72, stdev=339.97 clat percentiles (msec): | 1.00th=[ 531], 5.00th=[ 735], 10.00th=[ 844], 20.00th=[ 953], | 30.00th=[ 1045], 40.00th=[ 1133], 50.00th=[ 1217], 60.00th=[ 1301], | 70.00th=[ 1401], 80.00th=[ 1519], 90.00th=[ 1703], 95.00th=[ 1888], | 99.00th=[ 2056], 99.50th=[ 2123], 99.90th=[ 2299], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 127, per=25.28%, avg=51.83, stdev=26.17, samples=387 iops : min= 1, max= 31, avg=12.41, stdev= 6.57, samples=387 lat (msec) : 500=0.20%, 750=5.04%, 1000=20.82%, 2000=72.23%, >=2000=1.72% cpu : usr=0.05%, sys=0.25%, ctx=1774, 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 Run status group 0 (all jobs): WRITE: bw=206KiB/s (211kB/s), 51.5KiB/s-51.5KiB/s (52.7kB/s-52.8kB/s), io=40.0MiB (41.9MB), run=198750-198852msec 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=144949: Wed Aug 26 10:08:51 2026 read: IOPS=10, BW=42.1KiB/s (43.1kB/s)(5048KiB/120032msec) slat (usec): min=2873, max=64346, avg=16768.08, stdev=9004.01 clat (msec): min=28, max=1179, avg=472.39, stdev=147.65 lat (msec): min=34, max=1209, avg=489.17, stdev=148.89 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 284], 10.00th=[ 313], 20.00th=[ 351], | 30.00th=[ 393], 40.00th=[ 422], 50.00th=[ 451], 60.00th=[ 489], | 70.00th=[ 531], 80.00th=[ 584], 90.00th=[ 667], 95.00th=[ 743], | 99.00th=[ 894], 99.50th=[ 944], 99.90th=[ 995], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 111, per=25.10%, avg=41.67, stdev=21.22, samples=237 iops : min= 1, max= 27, avg= 9.87, stdev= 5.34, samples=237 write: IOPS=10, BW=43.3KiB/s (44.3kB/s)(5192KiB/120032msec); 0 zone resets slat (usec): min=35, max=13432, avg=430.12, stdev=1128.78 clat (msec): min=356, max=1883, avg=1000.47, stdev=274.48 lat (msec): min=356, max=1884, avg=1000.91, stdev=274.48 clat percentiles (msec): | 1.00th=[ 464], 5.00th=[ 584], 10.00th=[ 659], 20.00th=[ 751], | 30.00th=[ 827], 40.00th=[ 911], 50.00th=[ 995], 60.00th=[ 1083], | 70.00th=[ 1150], 80.00th=[ 1217], 90.00th=[ 1368], 95.00th=[ 1485], | 99.00th=[ 1703], 99.50th=[ 1770], 99.90th=[ 1821], 99.95th=[ 1888], | 99.99th=[ 1888] bw ( KiB/s): min= 7, max= 111, per=24.90%, avg=43.07, stdev=19.63, samples=235 iops : min= 1, max= 27, avg=10.23, stdev= 4.92, samples=235 lat (msec) : 50=0.20%, 100=0.27%, 250=0.74%, 500=30.59%, 750=24.96% lat (msec) : 1000=18.48%, 2000=24.77% cpu : usr=0.11%, sys=0.79%, ctx=4553, 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=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=144950: Wed Aug 26 10:08:51 2026 read: IOPS=10, BW=41.6KiB/s (42.6kB/s)(4976KiB/119637msec) slat (usec): min=38, max=68078, avg=16427.41, stdev=9026.73 clat (msec): min=30, max=1352, avg=477.98, stdev=152.55 lat (msec): min=34, max=1386, avg=494.42, stdev=154.20 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 284], 10.00th=[ 313], 20.00th=[ 355], | 30.00th=[ 393], 40.00th=[ 426], 50.00th=[ 460], 60.00th=[ 489], | 70.00th=[ 535], 80.00th=[ 592], 90.00th=[ 676], 95.00th=[ 726], | 99.00th=[ 953], 99.50th=[ 1028], 99.90th=[ 1334], 99.95th=[ 1351], | 99.99th=[ 1351] bw ( KiB/s): min= 7, max= 111, per=25.00%, avg=41.50, stdev=21.04, samples=234 iops : min= 1, max= 27, avg= 9.83, stdev= 5.28, samples=234 write: IOPS=10, BW=43.0KiB/s (45.1kB/s)(5264KiB/119637msec); 0 zone resets slat (usec): min=35, max=397359, avg=620.14, stdev=10965.55 clat (msec): min=159, max=1810, avg=985.50, stdev=283.20 lat (msec): min=159, max=1810, avg=986.12, stdev=283.28 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 567], 10.00th=[ 642], 20.00th=[ 743], | 30.00th=[ 818], 40.00th=[ 902], 50.00th=[ 969], 60.00th=[ 1053], | 70.00th=[ 1150], 80.00th=[ 1217], 90.00th=[ 1351], 95.00th=[ 1452], | 99.00th=[ 1687], 99.50th=[ 1770], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 133, per=25.17%, avg=43.54, stdev=20.89, samples=236 iops : min= 1, max= 33, avg=10.34, stdev= 5.25, samples=236 lat (msec) : 50=0.16%, 100=0.27%, 250=1.09%, 500=30.70%, 750=24.88% lat (msec) : 1000=18.75%, 2000=24.14% cpu : usr=0.13%, sys=0.72%, ctx=4619, 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=144951: Wed Aug 26 10:08:51 2026 read: IOPS=10, BW=41.5KiB/s (42.5kB/s)(4984KiB/119979msec) slat (msec): min=3, max=423, avg=17.01, stdev=14.80 clat (msec): min=24, max=1177, avg=476.62, stdev=147.61 lat (msec): min=34, max=1189, avg=493.64, stdev=149.10 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 284], 10.00th=[ 317], 20.00th=[ 359], | 30.00th=[ 393], 40.00th=[ 426], 50.00th=[ 456], 60.00th=[ 485], | 70.00th=[ 531], 80.00th=[ 584], 90.00th=[ 676], 95.00th=[ 768], | 99.00th=[ 902], 99.50th=[ 944], 99.90th=[ 1167], 99.95th=[ 1183], | 99.99th=[ 1183] bw ( KiB/s): min= 7, max= 111, per=24.94%, avg=41.41, stdev=20.65, samples=236 iops : min= 1, max= 27, avg= 9.80, stdev= 5.17, samples=236 write: IOPS=10, BW=43.8KiB/s (44.9kB/s)(5256KiB/119979msec); 0 zone resets slat (usec): min=32, max=17424, avg=458.81, stdev=1408.30 clat (msec): min=266, max=1922, avg=990.08, stdev=273.09 lat (msec): min=266, max=1922, avg=990.54, stdev=273.11 clat percentiles (msec): | 1.00th=[ 426], 5.00th=[ 575], 10.00th=[ 659], 20.00th=[ 751], | 30.00th=[ 818], 40.00th=[ 902], 50.00th=[ 969], 60.00th=[ 1062], | 70.00th=[ 1133], 80.00th=[ 1217], 90.00th=[ 1351], 95.00th=[ 1452], | 99.00th=[ 1687], 99.50th=[ 1770], 99.90th=[ 1871], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 7, max= 103, per=24.82%, avg=42.94, stdev=19.48, samples=238 iops : min= 1, max= 25, avg=10.19, stdev= 4.90, samples=238 lat (msec) : 50=0.12%, 100=0.23%, 250=0.47%, 500=31.13%, 750=24.26% lat (msec) : 1000=20.12%, 2000=23.67% cpu : usr=0.11%, sys=0.77%, ctx=4533, 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=144952: Wed Aug 26 10:08:51 2026 read: IOPS=10, BW=42.1KiB/s (43.1kB/s)(5060KiB/120209msec) slat (msec): min=3, max=688, avg=18.34, stdev=30.60 clat (msec): min=36, max=2523, avg=477.48, stdev=180.20 lat (msec): min=53, max=2540, avg=495.83, stdev=187.24 clat percentiles (msec): | 1.00th=[ 127], 5.00th=[ 275], 10.00th=[ 309], 20.00th=[ 351], | 30.00th=[ 384], 40.00th=[ 422], 50.00th=[ 447], 60.00th=[ 485], | 70.00th=[ 531], 80.00th=[ 592], 90.00th=[ 676], 95.00th=[ 760], | 99.00th=[ 986], 99.50th=[ 1183], 99.90th=[ 2333], 99.95th=[ 2534], | 99.99th=[ 2534] bw ( KiB/s): min= 7, max= 104, per=25.69%, avg=42.65, stdev=20.52, samples=232 iops : min= 1, max= 26, avg=10.12, stdev= 5.17, samples=232 write: IOPS=10, BW=43.1KiB/s (44.1kB/s)(5180KiB/120209msec); 0 zone resets slat (usec): min=33, max=16771, avg=391.05, stdev=1126.78 clat (msec): min=86, max=3148, avg=998.07, stdev=321.84 lat (msec): min=86, max=3148, avg=998.47, stdev=321.85 clat percentiles (msec): | 1.00th=[ 338], 5.00th=[ 535], 10.00th=[ 634], 20.00th=[ 735], | 30.00th=[ 827], 40.00th=[ 894], 50.00th=[ 978], 60.00th=[ 1062], | 70.00th=[ 1150], 80.00th=[ 1250], 90.00th=[ 1385], 95.00th=[ 1469], | 99.00th=[ 1770], 99.50th=[ 2500], 99.90th=[ 3037], 99.95th=[ 3138], | 99.99th=[ 3138] bw ( KiB/s): min= 7, max= 125, per=25.40%, avg=43.94, stdev=20.07, samples=230 iops : min= 1, max= 31, avg=10.44, stdev= 5.07, samples=230 lat (msec) : 50=0.20%, 100=0.31%, 250=1.17%, 500=31.72%, 750=24.14% lat (msec) : 1000=17.85%, 2000=24.14%, >=2000=0.47% cpu : usr=0.12%, sys=0.78%, ctx=4578, 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=167KiB/s (171kB/s), 41.5KiB/s-42.1KiB/s (42.5kB/s-43.1kB/s), io=19.6MiB (20.5MB), run=119637-120209msec WRITE: bw=174KiB/s (178kB/s), 43.1KiB/s-43.0KiB/s (44.1kB/s-45.1kB/s), io=20.4MiB (21.4MB), run=119637-120209msec 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=144974: Wed Aug 26 10:09:02 2026 read: IOPS=1, BW=61.6MiB/s (64.6MB/s)(40.0MiB/649msec) slat (nsec): min=20089k, max=20089k, avg=20089088.00, stdev= 0.00 clat (nsec): min=616004k, max=616004k, avg=616003937.00, stdev= 0.00 lat (nsec): min=636097k, max=636097k, avg=636097073.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 617], 5.00th=[ 617], 10.00th=[ 617], 20.00th=[ 617], | 30.00th=[ 617], 40.00th=[ 617], 50.00th=[ 617], 60.00th=[ 617], | 70.00th=[ 617], 80.00th=[ 617], 90.00th=[ 617], 95.00th=[ 617], | 99.00th=[ 617], 99.50th=[ 617], 99.90th=[ 617], 99.95th=[ 617], | 99.99th=[ 617] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.70%, ctx=43, 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=61.6MiB/s (64.6MB/s), 61.6MiB/s-61.6MiB/s (64.6MB/s-64.6MB/s), io=40.0MiB (41.9MB), run=649-649msec 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