== sanity test 398c: run fio to test AIO ================= 06:44:07 (1787568247) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.406065 s, 103 MB/s osc.lustre-OST0000-osc-ffff97842b3e0800.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=144950: Mon Aug 24 06:47:08 2026 write: IOPS=14, BW=59.2KiB/s (60.7kB/s)(10.0MiB/172835msec); 0 zone resets slat (usec): min=21, max=21906, avg=182.91, stdev=776.67 clat (msec): min=173, max=3045, avg=1079.44, stdev=365.90 lat (msec): min=175, max=3045, avg=1079.63, stdev=365.89 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 600], 10.00th=[ 693], 20.00th=[ 802], | 30.00th=[ 894], 40.00th=[ 961], 50.00th=[ 1036], 60.00th=[ 1116], | 70.00th=[ 1217], 80.00th=[ 1334], 90.00th=[ 1519], 95.00th=[ 1720], | 99.00th=[ 2165], 99.50th=[ 2534], 99.90th=[ 3037], 99.95th=[ 3037], | 99.99th=[ 3037] bw ( KiB/s): min= 7, max= 254, per=25.83%, avg=60.97, stdev=30.57, samples=330 iops : min= 1, max= 63, avg=14.79, stdev= 7.68, samples=330 lat (msec) : 250=0.62%, 500=2.50%, 750=11.29%, 1000=30.12%, 2000=53.95% lat (msec) : >=2000=1.52% cpu : usr=0.03%, sys=0.19%, ctx=1665, 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=144951: Mon Aug 24 06:47:08 2026 write: IOPS=14, BW=59.2KiB/s (60.7kB/s)(10.0MiB/172833msec); 0 zone resets slat (usec): min=22, max=23045, avg=197.98, stdev=940.79 clat (msec): min=88, max=2983, avg=1079.18, stdev=360.65 lat (msec): min=88, max=2983, avg=1079.38, stdev=360.62 clat percentiles (msec): | 1.00th=[ 309], 5.00th=[ 600], 10.00th=[ 693], 20.00th=[ 810], | 30.00th=[ 894], 40.00th=[ 961], 50.00th=[ 1020], 60.00th=[ 1116], | 70.00th=[ 1200], 80.00th=[ 1318], 90.00th=[ 1552], 95.00th=[ 1703], | 99.00th=[ 2165], 99.50th=[ 2467], 99.90th=[ 2970], 99.95th=[ 2970], | 99.99th=[ 2970] bw ( KiB/s): min= 7, max= 200, per=25.15%, avg=59.36, stdev=28.58, samples=339 iops : min= 1, max= 50, avg=14.39, stdev= 7.19, samples=339 lat (msec) : 100=0.04%, 250=0.55%, 500=2.70%, 750=10.66%, 1000=32.11% lat (msec) : 2000=52.11%, >=2000=1.84% cpu : usr=0.05%, sys=0.18%, ctx=1789, 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=144952: Mon Aug 24 06:47:08 2026 write: IOPS=14, BW=59.2KiB/s (60.6kB/s)(10.0MiB/172894msec); 0 zone resets slat (usec): min=22, max=20295, avg=184.44, stdev=863.32 clat (msec): min=234, max=3045, avg=1079.21, stdev=353.28 lat (msec): min=234, max=3045, avg=1079.40, stdev=353.25 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 609], 10.00th=[ 693], 20.00th=[ 818], | 30.00th=[ 894], 40.00th=[ 961], 50.00th=[ 1036], 60.00th=[ 1133], | 70.00th=[ 1217], 80.00th=[ 1334], 90.00th=[ 1519], 95.00th=[ 1687], | 99.00th=[ 2039], 99.50th=[ 2635], 99.90th=[ 2869], 99.95th=[ 3037], | 99.99th=[ 3037] bw ( KiB/s): min= 7, max= 247, per=25.32%, avg=59.74, stdev=31.54, samples=337 iops : min= 1, max= 61, avg=14.47, stdev= 7.91, samples=337 lat (msec) : 250=0.62%, 500=2.38%, 750=10.78%, 1000=32.15%, 2000=52.73% lat (msec) : >=2000=1.33% cpu : usr=0.04%, sys=0.17%, ctx=1496, 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=144953: Mon Aug 24 06:47:08 2026 write: IOPS=14, BW=59.2KiB/s (60.6kB/s)(10.0MiB/172901msec); 0 zone resets slat (usec): min=22, max=18785, avg=185.66, stdev=818.39 clat (msec): min=240, max=3029, avg=1079.29, stdev=356.35 lat (msec): min=241, max=3029, avg=1079.48, stdev=356.33 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 609], 10.00th=[ 693], 20.00th=[ 802], | 30.00th=[ 885], 40.00th=[ 961], 50.00th=[ 1036], 60.00th=[ 1116], | 70.00th=[ 1217], 80.00th=[ 1318], 90.00th=[ 1536], 95.00th=[ 1687], | 99.00th=[ 2232], 99.50th=[ 2534], 99.90th=[ 2836], 99.95th=[ 2869], | 99.99th=[ 3037] bw ( KiB/s): min= 7, max= 199, per=25.09%, avg=59.21, stdev=27.65, samples=340 iops : min= 1, max= 49, avg=14.35, stdev= 6.93, samples=340 lat (msec) : 250=0.04%, 500=2.93%, 750=11.84%, 1000=30.59%, 2000=53.01% lat (msec) : >=2000=1.60% cpu : usr=0.05%, sys=0.19%, ctx=2024, 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=237KiB/s (243kB/s), 59.2KiB/s-59.2KiB/s (60.6kB/s-60.7kB/s), io=40.0MiB (41.9MB), run=172833-172901msec 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=144987: Mon Aug 24 06:49:17 2026 read: IOPS=10, BW=42.1KiB/s (43.1kB/s)(5048KiB/119858msec) slat (usec): min=2818, max=64482, avg=14318.19, stdev=8237.78 clat (msec): min=13, max=1101, avg=461.03, stdev=146.29 lat (msec): min=19, max=1121, avg=475.35, stdev=148.12 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 279], 10.00th=[ 309], 20.00th=[ 351], | 30.00th=[ 380], 40.00th=[ 414], 50.00th=[ 439], 60.00th=[ 468], | 70.00th=[ 510], 80.00th=[ 558], 90.00th=[ 651], 95.00th=[ 735], | 99.00th=[ 944], 99.50th=[ 986], 99.90th=[ 1099], 99.95th=[ 1099], | 99.99th=[ 1099] bw ( KiB/s): min= 7, max= 119, per=25.31%, avg=42.27, stdev=21.58, samples=234 iops : min= 1, max= 29, avg=10.09, stdev= 5.39, samples=234 write: IOPS=10, BW=43.3KiB/s (44.4kB/s)(5192KiB/119858msec); 0 zone resets slat (usec): min=29, max=12292, avg=228.05, stdev=785.32 clat (msec): min=368, max=2321, avg=1011.77, stdev=287.46 lat (msec): min=368, max=2322, avg=1012.00, stdev=287.50 clat percentiles (msec): | 1.00th=[ 498], 5.00th=[ 617], 10.00th=[ 684], 20.00th=[ 793], | 30.00th=[ 852], 40.00th=[ 911], 50.00th=[ 969], 60.00th=[ 1028], | 70.00th=[ 1099], 80.00th=[ 1234], 90.00th=[ 1418], 95.00th=[ 1569], | 99.00th=[ 1989], 99.50th=[ 2089], 99.90th=[ 2265], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 93, per=24.84%, avg=43.22, stdev=19.29, samples=235 iops : min= 1, max= 23, avg=10.32, stdev= 4.87, samples=235 lat (msec) : 20=0.04%, 50=0.27%, 100=0.04%, 250=0.78%, 500=33.05% lat (msec) : 750=20.98%, 1000=21.76%, 2000=22.62%, >=2000=0.47% cpu : usr=0.08%, sys=0.54%, ctx=4486, 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=144988: Mon Aug 24 06:49:17 2026 read: IOPS=10, BW=41.5KiB/s (42.5kB/s)(4976KiB/119855msec) slat (usec): min=36, max=61140, avg=14497.70, stdev=8488.73 clat (msec): min=17, max=1201, avg=462.52, stdev=148.43 lat (msec): min=25, max=1231, avg=477.02, stdev=150.23 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 279], 10.00th=[ 309], 20.00th=[ 347], | 30.00th=[ 380], 40.00th=[ 414], 50.00th=[ 439], 60.00th=[ 472], | 70.00th=[ 514], 80.00th=[ 567], 90.00th=[ 667], 95.00th=[ 735], | 99.00th=[ 944], 99.50th=[ 995], 99.90th=[ 1099], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 134, per=24.60%, avg=41.08, stdev=23.10, samples=237 iops : min= 1, max= 33, avg= 9.79, stdev= 5.76, samples=237 write: IOPS=10, BW=43.9KiB/s (44.0kB/s)(5264KiB/119855msec); 0 zone resets slat (usec): min=28, max=18884, avg=240.09, stdev=1055.39 clat (msec): min=235, max=2320, avg=1005.42, stdev=294.41 lat (msec): min=236, max=2320, avg=1005.66, stdev=294.47 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 592], 10.00th=[ 684], 20.00th=[ 768], | 30.00th=[ 835], 40.00th=[ 911], 50.00th=[ 969], 60.00th=[ 1045], | 70.00th=[ 1116], 80.00th=[ 1234], 90.00th=[ 1385], 95.00th=[ 1519], | 99.00th=[ 1921], 99.50th=[ 2072], 99.90th=[ 2232], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 103, per=24.88%, avg=43.29, stdev=19.07, samples=238 iops : min= 1, max= 25, avg=10.34, stdev= 4.81, samples=238 lat (msec) : 20=0.04%, 50=0.20%, 100=0.20%, 250=0.66%, 500=32.27% lat (msec) : 750=22.19%, 1000=20.86%, 2000=23.20%, >=2000=0.39% cpu : usr=0.09%, sys=0.56%, ctx=4627, 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=144989: Mon Aug 24 06:49:17 2026 read: IOPS=10, BW=41.6KiB/s (42.6kB/s)(4984KiB/119781msec) slat (usec): min=2304, max=75703, avg=14223.10, stdev=8523.20 clat (msec): min=18, max=1206, avg=457.95, stdev=143.66 lat (msec): min=34, max=1219, avg=472.18, stdev=145.30 clat percentiles (msec): | 1.00th=[ 182], 5.00th=[ 275], 10.00th=[ 305], 20.00th=[ 347], | 30.00th=[ 376], 40.00th=[ 409], 50.00th=[ 435], 60.00th=[ 468], | 70.00th=[ 510], 80.00th=[ 558], 90.00th=[ 651], 95.00th=[ 726], | 99.00th=[ 869], 99.50th=[ 919], 99.90th=[ 1116], 99.95th=[ 1200], | 99.99th=[ 1200] bw ( KiB/s): min= 7, max= 111, per=25.04%, avg=41.82, stdev=20.91, samples=234 iops : min= 1, max= 27, avg= 9.97, stdev= 5.24, samples=234 write: IOPS=10, BW=43.9KiB/s (44.9kB/s)(5256KiB/119781msec); 0 zone resets slat (usec): min=27, max=27771, avg=281.78, stdev=1234.25 clat (msec): min=189, max=2318, avg=1007.50, stdev=292.45 lat (msec): min=189, max=2318, avg=1007.79, stdev=292.44 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 600], 10.00th=[ 676], 20.00th=[ 785], | 30.00th=[ 852], 40.00th=[ 911], 50.00th=[ 961], 60.00th=[ 1036], | 70.00th=[ 1099], 80.00th=[ 1217], 90.00th=[ 1385], 95.00th=[ 1552], | 99.00th=[ 2039], 99.50th=[ 2198], 99.90th=[ 2265], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 96, per=24.87%, avg=43.27, stdev=19.37, samples=237 iops : min= 1, max= 24, avg=10.34, stdev= 4.87, samples=237 lat (msec) : 20=0.08%, 50=0.04%, 100=0.35%, 250=0.98%, 500=32.11% lat (msec) : 750=21.56%, 1000=21.99%, 2000=22.34%, >=2000=0.55% cpu : usr=0.08%, sys=0.54%, ctx=4576, 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=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=144990: Mon Aug 24 06:49:17 2026 read: IOPS=10, BW=42.3KiB/s (43.3kB/s)(5060KiB/119609msec) slat (usec): min=2374, max=60699, avg=14558.86, stdev=8195.50 clat (msec): min=10, max=1209, avg=460.68, stdev=142.18 lat (msec): min=28, max=1222, avg=475.24, stdev=143.49 clat percentiles (msec): | 1.00th=[ 192], 5.00th=[ 279], 10.00th=[ 309], 20.00th=[ 347], | 30.00th=[ 384], 40.00th=[ 409], 50.00th=[ 439], 60.00th=[ 477], | 70.00th=[ 514], 80.00th=[ 558], 90.00th=[ 642], 95.00th=[ 718], | 99.00th=[ 885], 99.50th=[ 961], 99.90th=[ 1053], 99.95th=[ 1217], | 99.99th=[ 1217] bw ( KiB/s): min= 7, max= 112, per=25.65%, avg=42.83, stdev=19.95, samples=232 iops : min= 1, max= 28, avg=10.22, stdev= 5.01, samples=232 write: IOPS=10, BW=43.3KiB/s (44.3kB/s)(5180KiB/119609msec); 0 zone resets slat (usec): min=26, max=16643, avg=267.49, stdev=1037.92 clat (msec): min=377, max=2319, avg=1009.80, stdev=291.50 lat (msec): min=377, max=2319, avg=1010.07, stdev=291.48 clat percentiles (msec): | 1.00th=[ 493], 5.00th=[ 609], 10.00th=[ 676], 20.00th=[ 776], | 30.00th=[ 844], 40.00th=[ 902], 50.00th=[ 969], 60.00th=[ 1036], | 70.00th=[ 1116], 80.00th=[ 1234], 90.00th=[ 1401], 95.00th=[ 1536], | 99.00th=[ 1989], 99.50th=[ 2072], 99.90th=[ 2232], 99.95th=[ 2333], | 99.99th=[ 2333] bw ( KiB/s): min= 7, max= 103, per=25.06%, avg=43.60, stdev=19.13, samples=232 iops : min= 1, max= 25, avg=10.41, stdev= 4.81, samples=232 lat (msec) : 20=0.08%, 50=0.08%, 100=0.04%, 250=1.17%, 500=31.95% lat (msec) : 750=23.01%, 1000=20.43%, 2000=22.81%, >=2000=0.43% cpu : usr=0.09%, sys=0.57%, ctx=4493, 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=167KiB/s (171kB/s), 41.5KiB/s-42.3KiB/s (42.5kB/s-43.3kB/s), io=19.6MiB (20.5MB), run=119609-119858msec WRITE: bw=174KiB/s (178kB/s), 43.3KiB/s-43.9KiB/s (44.3kB/s-44.0kB/s), io=20.4MiB (21.4MB), run=119609-119858msec 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=145011: Mon Aug 24 06:49:25 2026 read: IOPS=1, BW=79.2MiB/s (83.1MB/s)(40.0MiB/505msec) slat (nsec): min=25417k, max=25417k, avg=25416681.00, stdev= 0.00 clat (nsec): min=466293k, max=466293k, avg=466293345.00, stdev= 0.00 lat (nsec): min=491715k, max=491715k, avg=491714996.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 468], 5.00th=[ 468], 10.00th=[ 468], 20.00th=[ 468], | 30.00th=[ 468], 40.00th=[ 468], 50.00th=[ 468], 60.00th=[ 468], | 70.00th=[ 468], 80.00th=[ 468], 90.00th=[ 468], 95.00th=[ 468], | 99.00th=[ 468], 99.50th=[ 468], 99.90th=[ 468], 99.95th=[ 468], | 99.99th=[ 468] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=1.98%, ctx=40, 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=79.2MiB/s (83.1MB/s), 79.2MiB/s-79.2MiB/s (83.1MB/s-83.1MB/s), io=40.0MiB (41.9MB), run=505-505msec 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