== sanity test 398c: run fio to test AIO ================= 23:53:42 (1787370822) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.419801 s, 99.9 MB/s osc.lustre-OST0000-osc-ffff8c05c967e800.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=180352: Fri Aug 21 23:54:17 2026 write: IOPS=100, BW=401KiB/s (411kB/s)(10.0MiB/25543msec); 0 zone resets slat (usec): min=28, max=16567, avg=202.70, stdev=661.93 clat (msec): min=12, max=274, avg=159.30, stdev=32.34 lat (msec): min=13, max=274, avg=159.51, stdev=32.32 clat percentiles (msec): | 1.00th=[ 85], 5.00th=[ 109], 10.00th=[ 120], 20.00th=[ 134], | 30.00th=[ 144], 40.00th=[ 150], 50.00th=[ 157], 60.00th=[ 167], | 70.00th=[ 176], 80.00th=[ 188], 90.00th=[ 203], 95.00th=[ 213], | 99.00th=[ 239], 99.50th=[ 245], 99.90th=[ 275], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 272, max= 527, per=25.06%, avg=399.44, stdev=61.47, samples=50 iops : min= 68, max= 131, avg=99.50, stdev=15.35, samples=50 lat (msec) : 20=0.08%, 50=0.08%, 100=2.58%, 250=96.95%, 500=0.31% cpu : usr=0.22%, sys=0.96%, ctx=2907, 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=180353: Fri Aug 21 23:54:17 2026 write: IOPS=99, BW=399KiB/s (408kB/s)(10.0MiB/25683msec); 0 zone resets slat (usec): min=23, max=15608, avg=155.04, stdev=556.65 clat (msec): min=76, max=273, avg=159.86, stdev=31.42 lat (msec): min=76, max=273, avg=160.01, stdev=31.41 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 111], 10.00th=[ 118], 20.00th=[ 138], | 30.00th=[ 144], 40.00th=[ 150], 50.00th=[ 157], 60.00th=[ 165], | 70.00th=[ 176], 80.00th=[ 186], 90.00th=[ 203], 95.00th=[ 215], | 99.00th=[ 245], 99.50th=[ 251], 99.90th=[ 268], 99.95th=[ 275], | 99.99th=[ 275] bw ( KiB/s): min= 255, max= 512, per=24.88%, avg=396.51, stdev=58.79, samples=51 iops : min= 63, max= 128, avg=98.80, stdev=14.74, samples=51 lat (msec) : 100=2.46%, 250=96.80%, 500=0.74% cpu : usr=0.10%, sys=0.82%, ctx=1694, 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=180354: Fri Aug 21 23:54:17 2026 write: IOPS=99, BW=400KiB/s (409kB/s)(10.0MiB/25619msec); 0 zone resets slat (usec): min=21, max=7976, avg=181.02, stdev=538.16 clat (msec): min=15, max=264, avg=159.28, stdev=31.94 lat (msec): min=15, max=264, avg=159.46, stdev=31.94 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 108], 10.00th=[ 120], 20.00th=[ 138], | 30.00th=[ 144], 40.00th=[ 150], 50.00th=[ 159], 60.00th=[ 167], | 70.00th=[ 178], 80.00th=[ 186], 90.00th=[ 199], 95.00th=[ 209], | 99.00th=[ 232], 99.50th=[ 264], 99.90th=[ 266], 99.95th=[ 266], | 99.99th=[ 266] bw ( KiB/s): min= 254, max= 518, per=24.98%, avg=398.26, stdev=61.01, samples=50 iops : min= 63, max= 129, avg=99.22, stdev=15.23, samples=50 lat (msec) : 20=0.08%, 50=0.43%, 100=2.81%, 250=96.05%, 500=0.62% cpu : usr=0.20%, sys=0.85%, ctx=2439, 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=180355: Fri Aug 21 23:54:17 2026 write: IOPS=99, BW=399KiB/s (409kB/s)(10.0MiB/25646msec); 0 zone resets slat (usec): min=25, max=23474, avg=158.87, stdev=632.38 clat (msec): min=26, max=258, avg=159.96, stdev=31.40 lat (msec): min=26, max=262, avg=160.12, stdev=31.42 clat percentiles (msec): | 1.00th=[ 91], 5.00th=[ 113], 10.00th=[ 120], 20.00th=[ 136], | 30.00th=[ 144], 40.00th=[ 150], 50.00th=[ 159], 60.00th=[ 167], | 70.00th=[ 176], 80.00th=[ 186], 90.00th=[ 203], 95.00th=[ 213], | 99.00th=[ 245], 99.50th=[ 255], 99.90th=[ 259], 99.95th=[ 259], | 99.99th=[ 259] bw ( KiB/s): min= 254, max= 512, per=24.97%, avg=397.96, stdev=62.54, samples=50 iops : min= 63, max= 128, avg=99.16, stdev=15.60, samples=50 lat (msec) : 50=0.08%, 100=1.68%, 250=97.66%, 500=0.59% cpu : usr=0.16%, sys=0.84%, ctx=2200, 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=1595KiB/s (1633kB/s), 399KiB/s-401KiB/s (408kB/s-411kB/s), io=40.0MiB (41.9MB), run=25543-25683msec 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=180369: Fri Aug 21 23:54:56 2026 read: IOPS=41, BW=165KiB/s (169kB/s)(5048KiB/30534msec) slat (usec): min=41, max=54015, avg=13235.34, stdev=7389.01 clat (msec): min=34, max=357, avg=180.80, stdev=41.68 lat (msec): min=34, max=365, avg=194.04, stdev=43.16 clat percentiles (msec): | 1.00th=[ 94], 5.00th=[ 121], 10.00th=[ 134], 20.00th=[ 146], | 30.00th=[ 159], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 188], | 70.00th=[ 201], 80.00th=[ 213], 90.00th=[ 236], 95.00th=[ 253], | 99.00th=[ 288], 99.50th=[ 313], 99.90th=[ 355], 99.95th=[ 359], | 99.99th=[ 359] bw ( KiB/s): min= 103, max= 256, per=25.30%, avg=165.23, stdev=32.78, samples=60 iops : min= 25, max= 64, avg=40.93, stdev= 8.23, samples=60 write: IOPS=42, BW=170KiB/s (174kB/s)(5192KiB/30534msec); 0 zone resets slat (usec): min=25, max=16129, avg=236.49, stdev=848.19 clat (msec): min=79, max=353, avg=187.04, stdev=37.88 lat (msec): min=79, max=353, avg=187.28, stdev=37.84 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 133], 10.00th=[ 142], 20.00th=[ 155], | 30.00th=[ 165], 40.00th=[ 174], 50.00th=[ 182], 60.00th=[ 192], | 70.00th=[ 203], 80.00th=[ 218], 90.00th=[ 241], 95.00th=[ 259], | 99.00th=[ 284], 99.50th=[ 305], 99.90th=[ 338], 99.95th=[ 355], | 99.99th=[ 355] bw ( KiB/s): min= 111, max= 263, per=25.02%, avg=170.15, stdev=31.79, samples=60 iops : min= 27, max= 65, avg=42.15, stdev= 7.87, samples=60 lat (msec) : 50=0.16%, 100=0.51%, 250=93.12%, 500=6.21% cpu : usr=0.32%, sys=1.66%, ctx=4062, 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=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=180370: Fri Aug 21 23:54:56 2026 read: IOPS=40, BW=162KiB/s (166kB/s)(4976KiB/30642msec) slat (usec): min=2944, max=70543, avg=13412.07, stdev=7159.74 clat (msec): min=14, max=318, avg=180.70, stdev=39.43 lat (msec): min=41, max=327, avg=194.12, stdev=40.95 clat percentiles (msec): | 1.00th=[ 106], 5.00th=[ 124], 10.00th=[ 134], 20.00th=[ 148], | 30.00th=[ 159], 40.00th=[ 167], 50.00th=[ 178], 60.00th=[ 188], | 70.00th=[ 199], 80.00th=[ 215], 90.00th=[ 236], 95.00th=[ 253], | 99.00th=[ 284], 99.50th=[ 292], 99.90th=[ 309], 99.95th=[ 317], | 99.99th=[ 317] bw ( KiB/s): min= 95, max= 255, per=24.74%, avg=161.53, stdev=34.14, samples=60 iops : min= 23, max= 63, avg=40.00, stdev= 8.58, samples=60 write: IOPS=42, BW=172KiB/s (176kB/s)(5264KiB/30642msec); 0 zone resets slat (usec): min=32, max=10338, avg=210.19, stdev=632.32 clat (msec): min=70, max=340, avg=186.95, stdev=39.05 lat (msec): min=70, max=340, avg=187.16, stdev=39.07 clat percentiles (msec): | 1.00th=[ 112], 5.00th=[ 130], 10.00th=[ 144], 20.00th=[ 157], | 30.00th=[ 165], 40.00th=[ 174], 50.00th=[ 182], 60.00th=[ 192], | 70.00th=[ 205], 80.00th=[ 218], 90.00th=[ 239], 95.00th=[ 259], | 99.00th=[ 300], 99.50th=[ 317], 99.90th=[ 342], 99.95th=[ 342], | 99.99th=[ 342] bw ( KiB/s): min= 110, max= 287, per=25.30%, avg=172.03, stdev=38.41, samples=60 iops : min= 27, max= 71, avg=42.63, stdev= 9.53, samples=60 lat (msec) : 20=0.04%, 50=0.08%, 100=0.59%, 250=92.97%, 500=6.33% cpu : usr=0.27%, sys=1.50%, ctx=4164, 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=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=180371: Fri Aug 21 23:54:56 2026 read: IOPS=40, BW=162KiB/s (166kB/s)(4984KiB/30711msec) slat (usec): min=2627, max=74388, avg=13224.09, stdev=7155.87 clat (msec): min=26, max=325, avg=180.14, stdev=38.78 lat (msec): min=47, max=334, avg=193.37, stdev=40.17 clat percentiles (msec): | 1.00th=[ 107], 5.00th=[ 127], 10.00th=[ 138], 20.00th=[ 148], | 30.00th=[ 159], 40.00th=[ 167], 50.00th=[ 176], 60.00th=[ 184], | 70.00th=[ 197], 80.00th=[ 211], 90.00th=[ 234], 95.00th=[ 251], | 99.00th=[ 284], 99.50th=[ 309], 99.90th=[ 321], 99.95th=[ 326], | 99.99th=[ 326] bw ( KiB/s): min= 79, max= 279, per=24.89%, avg=162.50, stdev=39.25, samples=60 iops : min= 19, max= 69, avg=40.23, stdev= 9.79, samples=60 write: IOPS=42, BW=171KiB/s (175kB/s)(5256KiB/30711msec); 0 zone resets slat (usec): min=25, max=14309, avg=215.79, stdev=638.19 clat (msec): min=107, max=334, avg=187.13, stdev=37.28 lat (msec): min=107, max=334, avg=187.35, stdev=37.29 clat percentiles (msec): | 1.00th=[ 116], 5.00th=[ 129], 10.00th=[ 144], 20.00th=[ 159], | 30.00th=[ 167], 40.00th=[ 176], 50.00th=[ 184], 60.00th=[ 192], | 70.00th=[ 203], 80.00th=[ 215], 90.00th=[ 241], 95.00th=[ 259], | 99.00th=[ 288], 99.50th=[ 292], 99.90th=[ 309], 99.95th=[ 334], | 99.99th=[ 334] bw ( KiB/s): min= 80, max= 245, per=25.00%, avg=170.03, stdev=36.74, samples=60 iops : min= 20, max= 61, avg=42.13, stdev= 9.18, samples=60 lat (msec) : 50=0.04%, 100=0.16%, 250=93.44%, 500=6.37% cpu : usr=0.21%, sys=1.59%, ctx=4236, 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=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=180372: Fri Aug 21 23:54:56 2026 read: IOPS=41, BW=165KiB/s (169kB/s)(5060KiB/30710msec) slat (usec): min=2964, max=94399, avg=13243.48, stdev=7420.38 clat (msec): min=14, max=361, avg=179.80, stdev=38.88 lat (msec): min=20, max=373, avg=193.05, stdev=40.34 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 126], 10.00th=[ 134], 20.00th=[ 146], | 30.00th=[ 157], 40.00th=[ 165], 50.00th=[ 176], 60.00th=[ 186], | 70.00th=[ 199], 80.00th=[ 211], 90.00th=[ 232], 95.00th=[ 249], | 99.00th=[ 288], 99.50th=[ 300], 99.90th=[ 326], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 87, max= 255, per=25.20%, avg=164.57, stdev=37.26, samples=60 iops : min= 21, max= 63, avg=40.75, stdev= 9.29, samples=60 write: IOPS=42, BW=169KiB/s (173kB/s)(5180KiB/30710msec); 0 zone resets slat (usec): min=30, max=12442, avg=215.24, stdev=773.14 clat (msec): min=72, max=361, avg=188.06, stdev=39.05 lat (msec): min=72, max=361, avg=188.28, stdev=39.04 clat percentiles (msec): | 1.00th=[ 118], 5.00th=[ 133], 10.00th=[ 142], 20.00th=[ 157], | 30.00th=[ 165], 40.00th=[ 174], 50.00th=[ 182], 60.00th=[ 192], | 70.00th=[ 205], 80.00th=[ 222], 90.00th=[ 247], 95.00th=[ 257], | 99.00th=[ 292], 99.50th=[ 300], 99.90th=[ 351], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 103, max= 239, per=24.70%, avg=167.97, stdev=31.06, samples=60 iops : min= 25, max= 59, avg=41.60, stdev= 7.78, samples=60 lat (msec) : 20=0.04%, 100=0.20%, 250=93.52%, 500=6.25% cpu : usr=0.23%, sys=1.74%, ctx=4341, 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=653KiB/s (669kB/s), 162KiB/s-165KiB/s (166kB/s-169kB/s), io=19.6MiB (20.5MB), run=30534-30711msec WRITE: bw=680KiB/s (697kB/s), 169KiB/s-172KiB/s (173kB/s-176kB/s), io=20.4MiB (21.4MB), run=30534-30711msec 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=180382: Fri Aug 21 23:55:06 2026 read: IOPS=2, BW=90.7MiB/s (95.1MB/s)(40.0MiB/441msec) slat (nsec): min=36590k, max=36590k, avg=36589898.00, stdev= 0.00 clat (nsec): min=380015k, max=380015k, avg=380015215.00, stdev= 0.00 lat (nsec): min=416609k, max=416609k, avg=416609491.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 380], 5.00th=[ 380], 10.00th=[ 380], 20.00th=[ 380], | 30.00th=[ 380], 40.00th=[ 380], 50.00th=[ 380], 60.00th=[ 380], | 70.00th=[ 380], 80.00th=[ 380], 90.00th=[ 380], 95.00th=[ 380], | 99.00th=[ 380], 99.50th=[ 380], 99.90th=[ 380], 99.95th=[ 380], | 99.99th=[ 380] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=1.82%, ctx=5, 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=90.7MiB/s (95.1MB/s), 90.7MiB/s-90.7MiB/s (95.1MB/s-95.1MB/s), io=40.0MiB (41.9MB), run=441-441msec 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