== sanity test 398c: run fio to test AIO ================= 17:46:09 (1787867169) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.520716 s, 80.5 MB/s osc.lustre-OST0000-osc-ffff9effc4827000.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=180077: Thu Aug 27 17:46:44 2026 write: IOPS=99, BW=397KiB/s (407kB/s)(10.0MiB/25772msec); 0 zone resets slat (usec): min=22, max=16970, avg=178.08, stdev=838.79 clat (msec): min=40, max=343, avg=160.69, stdev=47.96 lat (msec): min=41, max=344, avg=160.87, stdev=47.96 clat percentiles (msec): | 1.00th=[ 43], 5.00th=[ 90], 10.00th=[ 109], 20.00th=[ 123], | 30.00th=[ 134], 40.00th=[ 142], 50.00th=[ 159], 60.00th=[ 169], | 70.00th=[ 180], 80.00th=[ 199], 90.00th=[ 224], 95.00th=[ 249], | 99.00th=[ 292], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 251, max= 804, per=24.96%, avg=395.67, stdev=100.74, samples=51 iops : min= 62, max= 201, avg=98.57, stdev=25.28, samples=51 lat (msec) : 50=1.09%, 100=5.20%, 250=89.30%, 500=4.41% cpu : usr=0.19%, sys=0.94%, ctx=2087, 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=180078: Thu Aug 27 17:46:44 2026 write: IOPS=99, BW=396KiB/s (406kB/s)(10.0MiB/25839msec); 0 zone resets slat (usec): min=22, max=17282, avg=160.29, stdev=626.59 clat (msec): min=23, max=344, avg=160.77, stdev=47.23 lat (msec): min=23, max=344, avg=160.93, stdev=47.22 clat percentiles (msec): | 1.00th=[ 45], 5.00th=[ 95], 10.00th=[ 110], 20.00th=[ 124], | 30.00th=[ 133], 40.00th=[ 144], 50.00th=[ 157], 60.00th=[ 169], | 70.00th=[ 182], 80.00th=[ 194], 90.00th=[ 224], 95.00th=[ 243], | 99.00th=[ 313], 99.50th=[ 330], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 347] bw ( KiB/s): min= 229, max= 711, per=24.80%, avg=393.04, stdev=93.00, samples=51 iops : min= 57, max= 177, avg=97.90, stdev=23.30, samples=51 lat (msec) : 50=1.02%, 100=4.88%, 250=89.92%, 500=4.18% cpu : usr=0.17%, sys=0.82%, ctx=2351, 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=180079: Thu Aug 27 17:46:44 2026 write: IOPS=99, BW=397KiB/s (407kB/s)(10.0MiB/25784msec); 0 zone resets slat (usec): min=22, max=13301, avg=181.22, stdev=673.79 clat (msec): min=11, max=345, avg=160.40, stdev=46.90 lat (msec): min=11, max=345, avg=160.59, stdev=46.90 clat percentiles (msec): | 1.00th=[ 52], 5.00th=[ 93], 10.00th=[ 111], 20.00th=[ 127], | 30.00th=[ 133], 40.00th=[ 144], 50.00th=[ 155], 60.00th=[ 169], | 70.00th=[ 180], 80.00th=[ 194], 90.00th=[ 222], 95.00th=[ 245], | 99.00th=[ 288], 99.50th=[ 338], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 251, max= 708, per=24.90%, avg=394.67, stdev=93.05, samples=51 iops : min= 62, max= 177, avg=98.31, stdev=23.35, samples=51 lat (msec) : 20=0.04%, 50=0.78%, 100=5.59%, 250=89.49%, 500=4.10% cpu : usr=0.16%, sys=1.17%, ctx=2809, 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=180080: Thu Aug 27 17:46:44 2026 write: IOPS=99, BW=397KiB/s (407kB/s)(10.0MiB/25764msec); 0 zone resets slat (usec): min=22, max=16164, avg=151.75, stdev=743.43 clat (msec): min=16, max=366, avg=160.44, stdev=48.03 lat (msec): min=16, max=366, avg=160.59, stdev=48.05 clat percentiles (msec): | 1.00th=[ 48], 5.00th=[ 91], 10.00th=[ 111], 20.00th=[ 125], | 30.00th=[ 133], 40.00th=[ 144], 50.00th=[ 157], 60.00th=[ 169], | 70.00th=[ 180], 80.00th=[ 194], 90.00th=[ 226], 95.00th=[ 251], | 99.00th=[ 300], 99.50th=[ 342], 99.90th=[ 342], 99.95th=[ 347], | 99.99th=[ 368] bw ( KiB/s): min= 251, max= 766, per=24.97%, avg=395.75, stdev=99.53, samples=51 iops : min= 62, max= 191, avg=98.59, stdev=24.92, samples=51 lat (msec) : 20=0.08%, 50=1.13%, 100=5.74%, 250=87.93%, 500=5.12% cpu : usr=0.17%, sys=0.78%, ctx=1475, 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 Run status group 0 (all jobs): WRITE: bw=1585KiB/s (1623kB/s), 396KiB/s-397KiB/s (406kB/s-407kB/s), io=40.0MiB (41.9MB), run=25764-25839msec 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=180094: Thu Aug 27 17:47:23 2026 read: IOPS=41, BW=167KiB/s (171kB/s)(5048KiB/30290msec) slat (usec): min=32, max=89236, avg=13231.39, stdev=8993.20 clat (msec): min=52, max=419, avg=180.13, stdev=57.55 lat (msec): min=67, max=440, avg=193.37, stdev=60.17 clat percentiles (msec): | 1.00th=[ 75], 5.00th=[ 99], 10.00th=[ 109], 20.00th=[ 132], | 30.00th=[ 148], 40.00th=[ 161], 50.00th=[ 174], 60.00th=[ 188], | 70.00th=[ 205], 80.00th=[ 226], 90.00th=[ 253], 95.00th=[ 279], | 99.00th=[ 347], 99.50th=[ 376], 99.90th=[ 418], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 85, max= 339, per=25.28%, avg=165.30, stdev=51.38, samples=60 iops : min= 21, max= 84, avg=40.90, stdev=12.82, samples=60 write: IOPS=42, BW=171KiB/s (176kB/s)(5192KiB/30290msec); 0 zone resets slat (usec): min=28, max=11642, avg=162.27, stdev=452.54 clat (msec): min=42, max=387, avg=184.75, stdev=54.15 lat (msec): min=42, max=387, avg=184.91, stdev=54.14 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 104], 10.00th=[ 116], 20.00th=[ 140], | 30.00th=[ 157], 40.00th=[ 165], 50.00th=[ 180], 60.00th=[ 194], | 70.00th=[ 209], 80.00th=[ 228], 90.00th=[ 257], 95.00th=[ 288], | 99.00th=[ 334], 99.50th=[ 355], 99.90th=[ 380], 99.95th=[ 388], | 99.99th=[ 388] bw ( KiB/s): min= 95, max= 304, per=25.04%, avg=170.53, stdev=49.15, samples=60 iops : min= 23, max= 76, avg=42.22, stdev=12.38, samples=60 lat (msec) : 50=0.12%, 100=4.57%, 250=84.22%, 500=11.09% cpu : usr=0.23%, sys=1.63%, ctx=4021, 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=180095: Thu Aug 27 17:47:23 2026 read: IOPS=40, BW=163KiB/s (167kB/s)(4976KiB/30563msec) slat (usec): min=42, max=68415, avg=13560.49, stdev=9107.76 clat (msec): min=52, max=400, avg=180.52, stdev=57.53 lat (msec): min=71, max=417, avg=194.09, stdev=59.94 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 96], 10.00th=[ 110], 20.00th=[ 132], | 30.00th=[ 148], 40.00th=[ 161], 50.00th=[ 174], 60.00th=[ 188], | 70.00th=[ 205], 80.00th=[ 226], 90.00th=[ 262], 95.00th=[ 292], | 99.00th=[ 338], 99.50th=[ 359], 99.90th=[ 397], 99.95th=[ 401], | 99.99th=[ 401] bw ( KiB/s): min= 75, max= 307, per=24.83%, avg=162.37, stdev=51.63, samples=60 iops : min= 18, max= 76, avg=40.15, stdev=12.93, samples=60 write: IOPS=43, BW=172KiB/s (176kB/s)(5264KiB/30563msec); 0 zone resets slat (usec): min=30, max=14741, avg=201.28, stdev=729.48 clat (msec): min=64, max=365, avg=186.47, stdev=52.07 lat (msec): min=65, max=366, avg=186.68, stdev=52.07 clat percentiles (msec): | 1.00th=[ 92], 5.00th=[ 103], 10.00th=[ 113], 20.00th=[ 144], | 30.00th=[ 157], 40.00th=[ 171], 50.00th=[ 186], 60.00th=[ 199], | 70.00th=[ 213], 80.00th=[ 228], 90.00th=[ 253], 95.00th=[ 279], | 99.00th=[ 317], 99.50th=[ 330], 99.90th=[ 355], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 79, max= 352, per=25.29%, avg=172.22, stdev=52.91, samples=60 iops : min= 19, max= 88, avg=42.65, stdev=13.31, samples=60 lat (msec) : 100=5.39%, 250=82.97%, 500=11.64% cpu : usr=0.23%, sys=1.51%, ctx=3959, 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=180096: Thu Aug 27 17:47:23 2026 read: IOPS=40, BW=163KiB/s (167kB/s)(4984KiB/30566msec) slat (usec): min=2100, max=75356, avg=13488.71, stdev=8688.91 clat (msec): min=27, max=410, avg=180.16, stdev=53.43 lat (msec): min=36, max=425, avg=193.65, stdev=56.05 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 102], 10.00th=[ 111], 20.00th=[ 133], | 30.00th=[ 148], 40.00th=[ 165], 50.00th=[ 178], 60.00th=[ 190], | 70.00th=[ 205], 80.00th=[ 222], 90.00th=[ 249], 95.00th=[ 275], | 99.00th=[ 317], 99.50th=[ 351], 99.90th=[ 380], 99.95th=[ 409], | 99.99th=[ 409] bw ( KiB/s): min= 63, max= 288, per=24.93%, avg=163.07, stdev=54.80, samples=60 iops : min= 15, max= 72, avg=40.37, stdev=13.76, samples=60 write: IOPS=42, BW=172KiB/s (176kB/s)(5256KiB/30566msec); 0 zone resets slat (usec): min=32, max=15911, avg=199.15, stdev=717.67 clat (msec): min=84, max=391, avg=185.75, stdev=54.81 lat (msec): min=84, max=391, avg=185.95, stdev=54.82 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 102], 10.00th=[ 113], 20.00th=[ 140], | 30.00th=[ 155], 40.00th=[ 171], 50.00th=[ 182], 60.00th=[ 197], | 70.00th=[ 213], 80.00th=[ 230], 90.00th=[ 253], 95.00th=[ 279], | 99.00th=[ 347], 99.50th=[ 355], 99.90th=[ 363], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 75, max= 400, per=25.11%, avg=171.02, stdev=54.82, samples=60 iops : min= 18, max= 100, avg=42.32, stdev=13.73, samples=60 lat (msec) : 50=0.04%, 100=4.53%, 250=85.16%, 500=10.27% cpu : usr=0.25%, sys=1.61%, ctx=4306, 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=180097: Thu Aug 27 17:47:23 2026 read: IOPS=41, BW=165KiB/s (169kB/s)(5060KiB/30654msec) slat (usec): min=47, max=71557, avg=13830.18, stdev=8879.46 clat (msec): min=29, max=433, avg=181.03, stdev=56.01 lat (msec): min=29, max=460, avg=194.87, stdev=58.83 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 96], 10.00th=[ 111], 20.00th=[ 133], | 30.00th=[ 150], 40.00th=[ 165], 50.00th=[ 180], 60.00th=[ 192], | 70.00th=[ 205], 80.00th=[ 224], 90.00th=[ 253], 95.00th=[ 279], | 99.00th=[ 338], 99.50th=[ 363], 99.90th=[ 414], 99.95th=[ 435], | 99.99th=[ 435] bw ( KiB/s): min= 64, max= 291, per=25.04%, avg=163.78, stdev=54.22, samples=60 iops : min= 16, max= 72, avg=40.53, stdev=13.57, samples=60 write: IOPS=42, BW=169KiB/s (173kB/s)(5180KiB/30654msec); 0 zone resets slat (usec): min=29, max=11801, avg=198.42, stdev=693.62 clat (msec): min=29, max=420, avg=186.55, stdev=57.20 lat (msec): min=29, max=420, avg=186.75, stdev=57.19 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 102], 10.00th=[ 115], 20.00th=[ 138], | 30.00th=[ 157], 40.00th=[ 169], 50.00th=[ 180], 60.00th=[ 194], | 70.00th=[ 211], 80.00th=[ 236], 90.00th=[ 264], 95.00th=[ 292], | 99.00th=[ 342], 99.50th=[ 359], 99.90th=[ 380], 99.95th=[ 422], | 99.99th=[ 422] bw ( KiB/s): min= 87, max= 320, per=24.53%, avg=167.08, stdev=53.27, samples=60 iops : min= 21, max= 80, avg=41.33, stdev=13.34, samples=60 lat (msec) : 50=0.35%, 100=5.04%, 250=82.23%, 500=12.38% cpu : usr=0.23%, sys=1.55%, ctx=3844, 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=655KiB/s (670kB/s), 163KiB/s-167KiB/s (167kB/s-171kB/s), io=19.6MiB (20.5MB), run=30290-30654msec WRITE: bw=682KiB/s (698kB/s), 169KiB/s-172KiB/s (173kB/s-176kB/s), io=20.4MiB (21.4MB), run=30290-30654msec 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=180105: Thu Aug 27 17:47:32 2026 read: IOPS=1, BW=69.2MiB/s (72.6MB/s)(40.0MiB/578msec) slat (nsec): min=40732k, max=40732k, avg=40731665.00, stdev= 0.00 clat (nsec): min=513456k, max=513456k, avg=513455914.00, stdev= 0.00 lat (nsec): min=554192k, max=554192k, avg=554191699.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 514], 5.00th=[ 514], 10.00th=[ 514], 20.00th=[ 514], | 30.00th=[ 514], 40.00th=[ 514], 50.00th=[ 514], 60.00th=[ 514], | 70.00th=[ 514], 80.00th=[ 514], 90.00th=[ 514], 95.00th=[ 514], | 99.00th=[ 514], 99.50th=[ 514], 99.90th=[ 514], 99.95th=[ 514], | 99.99th=[ 514] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=2.25%, ctx=8, 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=69.2MiB/s (72.6MB/s), 69.2MiB/s-69.2MiB/s (72.6MB/s-72.6MB/s), io=40.0MiB (41.9MB), run=578-578msec 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