== sanity test 398c: run fio to test AIO ================= 05:42:52 (1768560172) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.523059 s, 80.2 MB/s osc.lustre-OST0000-osc-ffff909e90305000.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=146762: Fri Jan 16 05:46:05 2026 write: IOPS=14, BW=56.3KiB/s (57.7kB/s)(10.0MiB/181869msec); 0 zone resets slat (usec): min=23, max=17650, avg=178.95, stdev=763.98 clat (msec): min=116, max=2662, avg=1136.00, stdev=389.48 lat (msec): min=116, max=2662, avg=1136.18, stdev=389.47 clat percentiles (msec): | 1.00th=[ 359], 5.00th=[ 634], 10.00th=[ 726], 20.00th=[ 827], | 30.00th=[ 911], 40.00th=[ 1003], 50.00th=[ 1083], 60.00th=[ 1167], | 70.00th=[ 1267], 80.00th=[ 1401], 90.00th=[ 1653], 95.00th=[ 1871], | 99.00th=[ 2333], 99.50th=[ 2500], 99.90th=[ 2635], 99.95th=[ 2668], | 99.99th=[ 2668] bw ( KiB/s): min= 7, max= 191, per=25.54%, avg=57.47, stdev=29.76, samples=350 iops : min= 1, max= 47, avg=13.91, stdev= 7.44, samples=350 lat (msec) : 250=0.82%, 500=1.84%, 750=9.26%, 1000=28.24%, 2000=56.72% lat (msec) : >=2000=3.12% cpu : usr=0.04%, sys=0.17%, ctx=1790, 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=146763: Fri Jan 16 05:46:05 2026 write: IOPS=14, BW=56.3KiB/s (57.6kB/s)(10.0MiB/182007msec); 0 zone resets slat (usec): min=24, max=20399, avg=196.10, stdev=869.31 clat (msec): min=151, max=2692, avg=1136.16, stdev=386.92 lat (msec): min=151, max=2692, avg=1136.36, stdev=386.90 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 617], 10.00th=[ 726], 20.00th=[ 827], | 30.00th=[ 911], 40.00th=[ 995], 50.00th=[ 1083], 60.00th=[ 1167], | 70.00th=[ 1284], 80.00th=[ 1401], 90.00th=[ 1670], 95.00th=[ 1871], | 99.00th=[ 2299], 99.50th=[ 2534], 99.90th=[ 2635], 99.95th=[ 2702], | 99.99th=[ 2702] bw ( KiB/s): min= 7, max= 167, per=25.70%, avg=57.83, stdev=28.23, samples=348 iops : min= 1, max= 41, avg=14.00, stdev= 7.08, samples=348 lat (msec) : 250=0.86%, 500=1.52%, 750=9.77%, 1000=28.32%, 2000=56.25% lat (msec) : >=2000=3.28% cpu : usr=0.04%, sys=0.19%, ctx=1772, 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=146764: Fri Jan 16 05:46:05 2026 write: IOPS=14, BW=56.3KiB/s (57.7kB/s)(10.0MiB/181740msec); 0 zone resets slat (usec): min=24, max=26095, avg=170.19, stdev=840.68 clat (msec): min=263, max=2743, avg=1134.62, stdev=393.67 lat (msec): min=263, max=2743, avg=1134.79, stdev=393.65 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 634], 10.00th=[ 726], 20.00th=[ 810], | 30.00th=[ 894], 40.00th=[ 978], 50.00th=[ 1070], 60.00th=[ 1183], | 70.00th=[ 1284], 80.00th=[ 1401], 90.00th=[ 1620], 95.00th=[ 1905], | 99.00th=[ 2400], 99.50th=[ 2534], 99.90th=[ 2735], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 7, max= 176, per=27.21%, avg=61.21, stdev=33.79, samples=329 iops : min= 1, max= 44, avg=14.85, stdev= 8.48, samples=329 lat (msec) : 500=2.54%, 750=9.49%, 1000=31.21%, 2000=52.93%, >=2000=3.83% cpu : usr=0.03%, sys=0.16%, ctx=1468, 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=146765: Fri Jan 16 05:46:05 2026 write: IOPS=14, BW=56.3KiB/s (57.7kB/s)(10.0MiB/181862msec); 0 zone resets slat (usec): min=23, max=27990, avg=225.25, stdev=1137.29 clat (msec): min=137, max=2726, avg=1135.07, stdev=385.53 lat (msec): min=137, max=2726, avg=1135.30, stdev=385.55 clat percentiles (msec): | 1.00th=[ 397], 5.00th=[ 634], 10.00th=[ 735], 20.00th=[ 827], | 30.00th=[ 911], 40.00th=[ 995], 50.00th=[ 1083], 60.00th=[ 1167], | 70.00th=[ 1267], 80.00th=[ 1418], 90.00th=[ 1653], 95.00th=[ 1838], | 99.00th=[ 2299], 99.50th=[ 2467], 99.90th=[ 2635], 99.95th=[ 2735], | 99.99th=[ 2735] bw ( KiB/s): min= 7, max= 179, per=25.55%, avg=57.48, stdev=28.54, samples=350 iops : min= 1, max= 44, avg=13.91, stdev= 7.14, samples=350 lat (msec) : 250=0.94%, 500=1.41%, 750=8.95%, 1000=29.92%, 2000=55.59% lat (msec) : >=2000=3.20% cpu : usr=0.04%, sys=0.17%, ctx=1698, 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=225KiB/s (230kB/s), 56.3KiB/s-56.3KiB/s (57.6kB/s-57.7kB/s), io=40.0MiB (41.9MB), run=181740-182007msec 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=146801: Fri Jan 16 05:47:59 2026 read: IOPS=12, BW=48.6KiB/s (49.7kB/s)(5048KiB/103962msec) slat (usec): min=36, max=66113, avg=14502.11, stdev=8094.17 clat (msec): min=12, max=883, avg=410.89, stdev=109.84 lat (msec): min=22, max=890, avg=425.40, stdev=110.95 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 271], 10.00th=[ 300], 20.00th=[ 330], | 30.00th=[ 355], 40.00th=[ 376], 50.00th=[ 397], 60.00th=[ 422], | 70.00th=[ 451], 80.00th=[ 485], 90.00th=[ 542], 95.00th=[ 617], | 99.00th=[ 735], 99.50th=[ 785], 99.90th=[ 844], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7, max= 135, per=25.23%, avg=48.45, stdev=22.95, samples=204 iops : min= 1, max= 33, avg=11.65, stdev= 5.75, samples=204 write: IOPS=12, BW=49.9KiB/s (51.1kB/s)(5192KiB/103962msec); 0 zone resets slat (usec): min=24, max=14690, avg=223.01, stdev=855.60 clat (msec): min=235, max=1770, avg=866.89, stdev=233.40 lat (msec): min=235, max=1770, avg=867.11, stdev=233.42 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 510], 10.00th=[ 592], 20.00th=[ 684], | 30.00th=[ 751], 40.00th=[ 810], 50.00th=[ 860], 60.00th=[ 911], | 70.00th=[ 969], 80.00th=[ 1036], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1586], 99.50th=[ 1636], 99.90th=[ 1720], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 103, per=24.70%, avg=49.40, stdev=20.03, samples=205 iops : min= 1, max= 25, avg=11.88, stdev= 5.10, samples=205 lat (msec) : 20=0.08%, 50=0.12%, 100=0.27%, 250=1.45%, 500=41.80% lat (msec) : 750=20.39%, 1000=23.24%, 2000=12.66% cpu : usr=0.10%, sys=0.61%, ctx=4454, 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=146802: Fri Jan 16 05:47:59 2026 read: IOPS=11, BW=47.7KiB/s (48.8kB/s)(4976KiB/104367msec) slat (usec): min=3099, max=76308, avg=14338.10, stdev=8046.81 clat (msec): min=17, max=809, avg=407.46, stdev=103.21 lat (msec): min=34, max=825, avg=421.81, stdev=104.43 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 266], 10.00th=[ 300], 20.00th=[ 334], | 30.00th=[ 359], 40.00th=[ 380], 50.00th=[ 397], 60.00th=[ 422], | 70.00th=[ 447], 80.00th=[ 477], 90.00th=[ 535], 95.00th=[ 592], | 99.00th=[ 709], 99.50th=[ 768], 99.90th=[ 793], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 134, per=24.47%, avg=46.98, stdev=22.41, samples=207 iops : min= 1, max= 33, avg=11.28, stdev= 5.62, samples=207 write: IOPS=12, BW=50.4KiB/s (51.6kB/s)(5264KiB/104367msec); 0 zone resets slat (usec): min=31, max=19771, avg=265.46, stdev=1177.43 clat (msec): min=194, max=1770, avg=867.56, stdev=240.07 lat (msec): min=194, max=1770, avg=867.83, stdev=240.15 clat percentiles (msec): | 1.00th=[ 334], 5.00th=[ 489], 10.00th=[ 592], 20.00th=[ 676], | 30.00th=[ 735], 40.00th=[ 802], 50.00th=[ 852], 60.00th=[ 911], | 70.00th=[ 969], 80.00th=[ 1045], 90.00th=[ 1150], 95.00th=[ 1284], | 99.00th=[ 1603], 99.50th=[ 1670], 99.90th=[ 1737], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 111, per=24.91%, avg=49.83, stdev=20.30, samples=207 iops : min= 1, max= 27, avg=11.99, stdev= 5.10, samples=207 lat (msec) : 20=0.04%, 50=0.16%, 100=0.27%, 250=1.37%, 500=42.62% lat (msec) : 750=20.27%, 1000=22.07%, 2000=13.20% cpu : usr=0.09%, sys=0.66%, ctx=4266, 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=146803: Fri Jan 16 05:47:59 2026 read: IOPS=11, BW=47.7KiB/s (48.9kB/s)(4984KiB/104439msec) slat (usec): min=2735, max=58389, avg=14689.11, stdev=8253.63 clat (msec): min=8, max=789, avg=407.06, stdev=98.18 lat (msec): min=29, max=798, avg=421.76, stdev=99.50 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 271], 10.00th=[ 296], 20.00th=[ 334], | 30.00th=[ 355], 40.00th=[ 376], 50.00th=[ 401], 60.00th=[ 422], | 70.00th=[ 447], 80.00th=[ 481], 90.00th=[ 527], 95.00th=[ 584], | 99.00th=[ 709], 99.50th=[ 726], 99.90th=[ 776], 99.95th=[ 793], | 99.99th=[ 793] bw ( KiB/s): min= 7, max= 127, per=25.08%, avg=48.16, stdev=22.75, samples=203 iops : min= 1, max= 31, avg=11.58, stdev= 5.71, samples=203 write: IOPS=12, BW=50.3KiB/s (51.5kB/s)(5256KiB/104439msec); 0 zone resets slat (usec): min=27, max=11769, avg=215.14, stdev=753.97 clat (msec): min=66, max=1776, avg=868.21, stdev=240.92 lat (msec): min=67, max=1777, avg=868.42, stdev=240.94 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 510], 10.00th=[ 592], 20.00th=[ 667], | 30.00th=[ 751], 40.00th=[ 802], 50.00th=[ 852], 60.00th=[ 919], | 70.00th=[ 969], 80.00th=[ 1045], 90.00th=[ 1150], 95.00th=[ 1284], | 99.00th=[ 1636], 99.50th=[ 1670], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 96, per=24.75%, avg=49.50, stdev=18.71, samples=207 iops : min= 1, max= 24, avg=11.91, stdev= 4.70, samples=207 lat (msec) : 10=0.04%, 50=0.04%, 100=0.20%, 250=1.29%, 500=42.27% lat (msec) : 750=20.12%, 1000=23.24%, 2000=12.81% cpu : usr=0.09%, sys=0.58%, ctx=4077, 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=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=146804: Fri Jan 16 05:47:59 2026 read: IOPS=12, BW=48.7KiB/s (49.9kB/s)(5060KiB/103872msec) slat (usec): min=2829, max=50365, avg=14788.03, stdev=8125.76 clat (msec): min=14, max=960, avg=412.33, stdev=103.07 lat (msec): min=30, max=985, avg=427.12, stdev=104.39 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 275], 10.00th=[ 305], 20.00th=[ 334], | 30.00th=[ 359], 40.00th=[ 380], 50.00th=[ 401], 60.00th=[ 426], | 70.00th=[ 451], 80.00th=[ 481], 90.00th=[ 535], 95.00th=[ 600], | 99.00th=[ 726], 99.50th=[ 793], 99.90th=[ 911], 99.95th=[ 961], | 99.99th=[ 961] bw ( KiB/s): min= 7, max= 119, per=25.50%, avg=48.97, stdev=20.49, samples=203 iops : min= 1, max= 29, avg=11.78, stdev= 5.12, samples=203 write: IOPS=12, BW=49.9KiB/s (51.1kB/s)(5180KiB/103872msec); 0 zone resets slat (usec): min=30, max=19410, avg=235.28, stdev=977.17 clat (msec): min=204, max=1741, avg=862.72, stdev=236.85 lat (msec): min=204, max=1741, avg=862.96, stdev=236.85 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 506], 10.00th=[ 592], 20.00th=[ 651], | 30.00th=[ 743], 40.00th=[ 802], 50.00th=[ 860], 60.00th=[ 902], | 70.00th=[ 961], 80.00th=[ 1028], 90.00th=[ 1150], 95.00th=[ 1284], | 99.00th=[ 1636], 99.50th=[ 1670], 99.90th=[ 1737], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 7, max= 104, per=24.80%, avg=49.59, stdev=19.80, samples=204 iops : min= 1, max= 26, avg=11.94, stdev= 5.00, samples=204 lat (msec) : 20=0.04%, 50=0.16%, 100=0.12%, 250=1.17%, 500=42.85% lat (msec) : 750=20.59%, 1000=22.93%, 2000=12.15% cpu : usr=0.11%, sys=0.66%, ctx=4832, 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=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=192KiB/s (197kB/s), 47.7KiB/s-48.7KiB/s (48.8kB/s-49.9kB/s), io=19.6MiB (20.5MB), run=103872-104439msec WRITE: bw=200KiB/s (205kB/s), 49.9KiB/s-50.4KiB/s (51.1kB/s-51.6kB/s), io=20.4MiB (21.4MB), run=103872-104439msec 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=146823: Fri Jan 16 05:48:11 2026 read: IOPS=1, BW=63.8MiB/s (66.9MB/s)(40.0MiB/627msec) slat (nsec): min=57969k, max=57969k, avg=57968735.00, stdev= 0.00 clat (nsec): min=549044k, max=549044k, avg=549043608.00, stdev= 0.00 lat (nsec): min=607018k, max=607018k, avg=607017538.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 550], 5.00th=[ 550], 10.00th=[ 550], 20.00th=[ 550], | 30.00th=[ 550], 40.00th=[ 550], 50.00th=[ 550], 60.00th=[ 550], | 70.00th=[ 550], 80.00th=[ 550], 90.00th=[ 550], 95.00th=[ 550], | 99.00th=[ 550], 99.50th=[ 550], 99.90th=[ 550], 99.95th=[ 550], | 99.99th=[ 550] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.76%, ctx=39, 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=63.8MiB/s (66.9MB/s), 63.8MiB/s-63.8MiB/s (66.9MB/s-66.9MB/s), io=40.0MiB (41.9MB), run=627-627msec 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