== sanity test 398c: run fio to test AIO ================= 16:11:15 (1789589475) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.470828 s, 89.1 MB/s osc.lustre-OST0000-osc-ffff96c5202d1800.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=179885: Wed Sep 16 16:11:51 2026 write: IOPS=100, BW=400KiB/s (410kB/s)(10.0MiB/25583msec); 0 zone resets slat (usec): min=22, max=14863, avg=178.98, stdev=639.97 clat (msec): min=14, max=436, avg=159.43, stdev=41.32 lat (msec): min=15, max=436, avg=159.61, stdev=41.28 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 103], 10.00th=[ 114], 20.00th=[ 126], | 30.00th=[ 134], 40.00th=[ 144], 50.00th=[ 157], 60.00th=[ 167], | 70.00th=[ 180], 80.00th=[ 197], 90.00th=[ 209], 95.00th=[ 222], | 99.00th=[ 300], 99.50th=[ 305], 99.90th=[ 359], 99.95th=[ 414], | 99.99th=[ 435] bw ( KiB/s): min= 256, max= 588, per=25.30%, avg=401.70, stdev=69.09, samples=50 iops : min= 64, max= 147, avg=100.02, stdev=17.31, samples=50 lat (msec) : 20=0.08%, 50=0.16%, 100=3.91%, 250=93.67%, 500=2.19% cpu : usr=0.18%, sys=0.94%, ctx=2761, 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=179886: Wed Sep 16 16:11:51 2026 write: IOPS=99, BW=397KiB/s (407kB/s)(10.0MiB/25786msec); 0 zone resets slat (usec): min=21, max=15283, avg=183.55, stdev=659.29 clat (msec): min=12, max=313, avg=159.88, stdev=39.18 lat (msec): min=13, max=313, avg=160.06, stdev=39.20 clat percentiles (msec): | 1.00th=[ 82], 5.00th=[ 105], 10.00th=[ 114], 20.00th=[ 127], | 30.00th=[ 136], 40.00th=[ 146], 50.00th=[ 157], 60.00th=[ 167], | 70.00th=[ 180], 80.00th=[ 194], 90.00th=[ 213], 95.00th=[ 224], | 99.00th=[ 292], 99.50th=[ 305], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] bw ( KiB/s): min= 248, max= 636, per=24.88%, avg=395.08, stdev=80.40, samples=51 iops : min= 62, max= 159, avg=98.39, stdev=20.17, samples=51 lat (msec) : 20=0.04%, 50=0.04%, 100=3.40%, 250=95.39%, 500=1.13% cpu : usr=0.16%, sys=0.95%, ctx=2170, 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=179887: Wed Sep 16 16:11:51 2026 write: IOPS=99, BW=398KiB/s (407kB/s)(10.0MiB/25746msec); 0 zone resets slat (usec): min=22, max=17071, avg=197.11, stdev=807.91 clat (msec): min=24, max=422, avg=159.86, stdev=41.38 lat (msec): min=24, max=422, avg=160.06, stdev=41.37 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 103], 10.00th=[ 114], 20.00th=[ 127], | 30.00th=[ 136], 40.00th=[ 146], 50.00th=[ 157], 60.00th=[ 167], | 70.00th=[ 180], 80.00th=[ 192], 90.00th=[ 209], 95.00th=[ 228], | 99.00th=[ 296], 99.50th=[ 305], 99.90th=[ 405], 99.95th=[ 405], | 99.99th=[ 422] bw ( KiB/s): min= 231, max= 632, per=24.98%, avg=396.73, stdev=73.57, samples=51 iops : min= 57, max= 158, avg=98.78, stdev=18.47, samples=51 lat (msec) : 50=0.20%, 100=3.95%, 250=92.85%, 500=3.01% cpu : usr=0.18%, sys=1.05%, ctx=2686, 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=179888: Wed Sep 16 16:11:51 2026 write: IOPS=99, BW=398KiB/s (408kB/s)(10.0MiB/25731msec); 0 zone resets slat (usec): min=22, max=11053, avg=152.33, stdev=587.86 clat (msec): min=19, max=453, avg=159.78, stdev=38.68 lat (msec): min=19, max=453, avg=159.94, stdev=38.70 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 104], 10.00th=[ 114], 20.00th=[ 127], | 30.00th=[ 136], 40.00th=[ 144], 50.00th=[ 157], 60.00th=[ 169], | 70.00th=[ 180], 80.00th=[ 192], 90.00th=[ 209], 95.00th=[ 224], | 99.00th=[ 262], 99.50th=[ 279], 99.90th=[ 305], 99.95th=[ 347], | 99.99th=[ 456] bw ( KiB/s): min= 247, max= 640, per=24.96%, avg=396.43, stdev=84.36, samples=51 iops : min= 61, max= 160, avg=98.71, stdev=21.17, samples=51 lat (msec) : 20=0.04%, 50=0.08%, 100=3.20%, 250=95.47%, 500=1.21% cpu : usr=0.16%, sys=0.96%, ctx=1859, 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=1588KiB/s (1627kB/s), 397KiB/s-400KiB/s (407kB/s-410kB/s), io=40.0MiB (41.9MB), run=25583-25786msec 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=179902: Wed Sep 16 16:12:31 2026 read: IOPS=41, BW=165KiB/s (169kB/s)(5048KiB/30512msec) slat (usec): min=3015, max=68936, avg=13958.76, stdev=8652.62 clat (msec): min=61, max=363, avg=180.70, stdev=49.58 lat (msec): min=68, max=380, avg=194.67, stdev=51.73 clat percentiles (msec): | 1.00th=[ 87], 5.00th=[ 108], 10.00th=[ 122], 20.00th=[ 140], | 30.00th=[ 153], 40.00th=[ 165], 50.00th=[ 176], 60.00th=[ 188], | 70.00th=[ 203], 80.00th=[ 222], 90.00th=[ 247], 95.00th=[ 271], | 99.00th=[ 321], 99.50th=[ 342], 99.90th=[ 363], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 64, max= 263, per=25.17%, avg=165.12, stdev=38.09, samples=60 iops : min= 16, max= 65, avg=40.82, stdev= 9.49, samples=60 write: IOPS=42, BW=170KiB/s (174kB/s)(5192KiB/30512msec); 0 zone resets slat (usec): min=26, max=16028, avg=200.73, stdev=639.61 clat (msec): min=24, max=376, avg=183.27, stdev=48.32 lat (msec): min=25, max=376, avg=183.47, stdev=48.31 clat percentiles (msec): | 1.00th=[ 95], 5.00th=[ 114], 10.00th=[ 126], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 167], 50.00th=[ 180], 60.00th=[ 190], | 70.00th=[ 207], 80.00th=[ 224], 90.00th=[ 251], 95.00th=[ 271], | 99.00th=[ 309], 99.50th=[ 321], 99.90th=[ 368], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 64, max= 280, per=24.94%, avg=170.33, stdev=48.07, samples=60 iops : min= 16, max= 70, avg=42.10, stdev=12.01, samples=60 lat (msec) : 50=0.04%, 100=2.50%, 250=87.81%, 500=9.65% cpu : usr=0.27%, sys=1.72%, ctx=4126, 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=179903: Wed Sep 16 16:12:31 2026 read: IOPS=40, BW=164KiB/s (168kB/s)(4976KiB/30387msec) slat (usec): min=2026, max=74675, avg=13781.36, stdev=8711.70 clat (msec): min=37, max=370, avg=178.61, stdev=50.13 lat (msec): min=58, max=406, avg=192.40, stdev=52.53 clat percentiles (msec): | 1.00th=[ 81], 5.00th=[ 105], 10.00th=[ 121], 20.00th=[ 138], | 30.00th=[ 150], 40.00th=[ 161], 50.00th=[ 174], 60.00th=[ 186], | 70.00th=[ 201], 80.00th=[ 220], 90.00th=[ 247], 95.00th=[ 268], | 99.00th=[ 317], 99.50th=[ 342], 99.90th=[ 368], 99.95th=[ 372], | 99.99th=[ 372] bw ( KiB/s): min= 64, max= 295, per=24.90%, avg=163.32, stdev=47.55, samples=59 iops : min= 16, max= 73, avg=40.34, stdev=11.86, samples=59 write: IOPS=43, BW=173KiB/s (177kB/s)(5264KiB/30387msec); 0 zone resets slat (usec): min=31, max=20750, avg=231.59, stdev=913.28 clat (msec): min=30, max=347, avg=184.92, stdev=48.00 lat (msec): min=30, max=347, avg=185.15, stdev=47.98 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 116], 10.00th=[ 128], 20.00th=[ 142], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 182], 60.00th=[ 194], | 70.00th=[ 209], 80.00th=[ 226], 90.00th=[ 247], 95.00th=[ 271], | 99.00th=[ 309], 99.50th=[ 338], 99.90th=[ 347], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 87, max= 263, per=25.35%, avg=173.15, stdev=43.49, samples=59 iops : min= 21, max= 65, avg=42.80, stdev=10.89, samples=59 lat (msec) : 50=0.08%, 100=2.73%, 250=88.32%, 500=8.87% cpu : usr=0.24%, sys=1.71%, ctx=4388, 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=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=179904: Wed Sep 16 16:12:31 2026 read: IOPS=41, BW=164KiB/s (168kB/s)(4984KiB/30384msec) slat (usec): min=53, max=69406, avg=14046.83, stdev=8699.83 clat (msec): min=22, max=361, avg=181.21, stdev=52.64 lat (msec): min=22, max=385, avg=195.27, stdev=54.64 clat percentiles (msec): | 1.00th=[ 80], 5.00th=[ 106], 10.00th=[ 118], 20.00th=[ 138], | 30.00th=[ 150], 40.00th=[ 163], 50.00th=[ 176], 60.00th=[ 190], | 70.00th=[ 205], 80.00th=[ 222], 90.00th=[ 255], 95.00th=[ 279], | 99.00th=[ 326], 99.50th=[ 338], 99.90th=[ 359], 99.95th=[ 363], | 99.99th=[ 363] bw ( KiB/s): min= 88, max= 264, per=24.97%, avg=163.83, stdev=39.54, samples=59 iops : min= 22, max= 66, avg=40.46, stdev= 9.88, samples=59 write: IOPS=43, BW=173KiB/s (177kB/s)(5256KiB/30384msec); 0 zone resets slat (usec): min=23, max=12278, avg=231.56, stdev=824.75 clat (msec): min=21, max=374, avg=184.10, stdev=48.99 lat (msec): min=21, max=374, avg=184.34, stdev=49.04 clat percentiles (msec): | 1.00th=[ 96], 5.00th=[ 117], 10.00th=[ 128], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 165], 50.00th=[ 178], 60.00th=[ 190], | 70.00th=[ 207], 80.00th=[ 222], 90.00th=[ 247], 95.00th=[ 275], | 99.00th=[ 326], 99.50th=[ 338], 99.90th=[ 351], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 63, max= 263, per=25.14%, avg=171.71, stdev=43.61, samples=59 iops : min= 15, max= 65, avg=42.46, stdev=10.94, samples=59 lat (msec) : 50=0.12%, 100=2.46%, 250=87.34%, 500=10.08% cpu : usr=0.26%, sys=1.58%, ctx=4141, 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=179905: Wed Sep 16 16:12:31 2026 read: IOPS=41, BW=165KiB/s (169kB/s)(5060KiB/30582msec) slat (usec): min=490, max=182711, avg=14164.53, stdev=10471.36 clat (msec): min=19, max=532, avg=180.00, stdev=55.09 lat (msec): min=26, max=542, avg=194.17, stdev=57.42 clat percentiles (msec): | 1.00th=[ 63], 5.00th=[ 101], 10.00th=[ 118], 20.00th=[ 140], | 30.00th=[ 153], 40.00th=[ 163], 50.00th=[ 176], 60.00th=[ 186], | 70.00th=[ 203], 80.00th=[ 224], 90.00th=[ 249], 95.00th=[ 271], | 99.00th=[ 330], 99.50th=[ 405], 99.90th=[ 477], 99.95th=[ 535], | 99.99th=[ 535] bw ( KiB/s): min= 74, max= 263, per=25.06%, avg=164.42, stdev=41.77, samples=60 iops : min= 18, max= 65, avg=40.62, stdev=10.44, samples=60 write: IOPS=42, BW=169KiB/s (173kB/s)(5180KiB/30582msec); 0 zone resets slat (usec): min=26, max=18498, avg=232.87, stdev=1008.84 clat (msec): min=38, max=537, avg=185.40, stdev=53.01 lat (msec): min=38, max=537, avg=185.64, stdev=53.08 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 115], 10.00th=[ 129], 20.00th=[ 144], | 30.00th=[ 157], 40.00th=[ 169], 50.00th=[ 180], 60.00th=[ 192], | 70.00th=[ 205], 80.00th=[ 226], 90.00th=[ 249], 95.00th=[ 275], | 99.00th=[ 347], 99.50th=[ 414], 99.90th=[ 531], 99.95th=[ 542], | 99.99th=[ 542] bw ( KiB/s): min= 86, max= 280, per=24.52%, avg=167.50, stdev=42.34, samples=60 iops : min= 21, max= 70, avg=41.38, stdev=10.59, samples=60 lat (msec) : 20=0.04%, 50=0.51%, 100=3.09%, 250=87.27%, 500=8.98% lat (msec) : 750=0.12% cpu : usr=0.23%, sys=1.62%, ctx=4147, 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=656KiB/s (672kB/s), 164KiB/s-165KiB/s (168kB/s-169kB/s), io=19.6MiB (20.5MB), run=30384-30582msec WRITE: bw=683KiB/s (700kB/s), 169KiB/s-173KiB/s (173kB/s-177kB/s), io=20.4MiB (21.4MB), run=30384-30582msec 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=179914: Wed Sep 16 16:12:38 2026 read: IOPS=2, BW=115MiB/s (121MB/s)(40.0MiB/347msec) slat (nsec): min=40067k, max=40067k, avg=40067268.00, stdev= 0.00 clat (nsec): min=291356k, max=291356k, avg=291356075.00, stdev= 0.00 lat (nsec): min=331428k, max=331428k, avg=331427882.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 292], 5.00th=[ 292], 10.00th=[ 292], 20.00th=[ 292], | 30.00th=[ 292], 40.00th=[ 292], 50.00th=[ 292], 60.00th=[ 292], | 70.00th=[ 292], 80.00th=[ 292], 90.00th=[ 292], 95.00th=[ 292], | 99.00th=[ 292], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 292] lat (msec) : 500=100.00% cpu : usr=0.29%, sys=3.18%, ctx=3, 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=115MiB/s (121MB/s), 115MiB/s-115MiB/s (121MB/s-121MB/s), io=40.0MiB (41.9MB), run=347-347msec 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