== sanity test 398c: run fio to test AIO ================= 13:44:09 (1786038249) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.612039 s, 68.5 MB/s osc.lustre-OST0000-osc-ffff927d9a176000.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=179894: Thu Aug 6 13:44:47 2026 write: IOPS=93, BW=373KiB/s (382kB/s)(10.0MiB/27464msec); 0 zone resets slat (usec): min=36, max=14967, avg=236.56, stdev=665.45 clat (msec): min=26, max=308, avg=170.46, stdev=40.44 lat (msec): min=26, max=309, avg=170.70, stdev=40.43 clat percentiles (msec): | 1.00th=[ 100], 5.00th=[ 117], 10.00th=[ 125], 20.00th=[ 138], | 30.00th=[ 146], 40.00th=[ 155], 50.00th=[ 165], 60.00th=[ 176], | 70.00th=[ 186], 80.00th=[ 205], 90.00th=[ 232], 95.00th=[ 251], | 99.00th=[ 275], 99.50th=[ 279], 99.90th=[ 296], 99.95th=[ 296], | 99.99th=[ 309] bw ( KiB/s): min= 248, max= 509, per=24.92%, avg=371.50, stdev=76.69, samples=54 iops : min= 62, max= 127, avg=92.57, stdev=19.17, samples=54 lat (msec) : 50=0.23%, 100=0.94%, 250=93.75%, 500=5.08% cpu : usr=0.20%, sys=1.11%, ctx=2412, 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=179895: Thu Aug 6 13:44:47 2026 write: IOPS=93, BW=373KiB/s (382kB/s)(10.0MiB/27440msec); 0 zone resets slat (usec): min=37, max=15664, avg=229.76, stdev=651.08 clat (msec): min=57, max=296, avg=170.50, stdev=40.27 lat (msec): min=57, max=296, avg=170.73, stdev=40.26 clat percentiles (msec): | 1.00th=[ 103], 5.00th=[ 120], 10.00th=[ 128], 20.00th=[ 140], | 30.00th=[ 146], 40.00th=[ 155], 50.00th=[ 161], 60.00th=[ 174], | 70.00th=[ 184], 80.00th=[ 203], 90.00th=[ 232], 95.00th=[ 253], | 99.00th=[ 275], 99.50th=[ 292], 99.90th=[ 292], 99.95th=[ 292], | 99.99th=[ 296] bw ( KiB/s): min= 247, max= 512, per=24.95%, avg=372.07, stdev=77.45, samples=54 iops : min= 61, max= 128, avg=92.67, stdev=19.41, samples=54 lat (msec) : 100=0.66%, 250=93.67%, 500=5.66% cpu : usr=0.12%, sys=1.03%, ctx=1990, 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=179896: Thu Aug 6 13:44:47 2026 write: IOPS=93, BW=374KiB/s (383kB/s)(10.0MiB/27365msec); 0 zone resets slat (usec): min=35, max=24183, avg=225.12, stdev=726.33 clat (msec): min=88, max=282, avg=170.65, stdev=39.43 lat (msec): min=92, max=282, avg=170.88, stdev=39.40 clat percentiles (msec): | 1.00th=[ 108], 5.00th=[ 115], 10.00th=[ 128], 20.00th=[ 138], | 30.00th=[ 146], 40.00th=[ 155], 50.00th=[ 165], 60.00th=[ 176], | 70.00th=[ 188], 80.00th=[ 201], 90.00th=[ 232], 95.00th=[ 249], | 99.00th=[ 275], 99.50th=[ 284], 99.90th=[ 284], 99.95th=[ 284], | 99.99th=[ 284] bw ( KiB/s): min= 254, max= 512, per=25.03%, avg=373.15, stdev=71.05, samples=54 iops : min= 63, max= 128, avg=92.94, stdev=17.77, samples=54 lat (msec) : 100=0.55%, 250=94.53%, 500=4.92% cpu : usr=0.12%, sys=1.14%, ctx=1959, 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=179897: Thu Aug 6 13:44:47 2026 write: IOPS=93, BW=374KiB/s (383kB/s)(10.0MiB/27389msec); 0 zone resets slat (usec): min=36, max=16212, avg=261.54, stdev=669.74 clat (msec): min=27, max=310, avg=170.09, stdev=40.42 lat (msec): min=27, max=310, avg=170.36, stdev=40.42 clat percentiles (msec): | 1.00th=[ 102], 5.00th=[ 116], 10.00th=[ 126], 20.00th=[ 138], | 30.00th=[ 146], 40.00th=[ 153], 50.00th=[ 163], 60.00th=[ 171], | 70.00th=[ 188], 80.00th=[ 205], 90.00th=[ 232], 95.00th=[ 249], | 99.00th=[ 284], 99.50th=[ 288], 99.90th=[ 309], 99.95th=[ 309], | 99.99th=[ 313] bw ( KiB/s): min= 253, max= 509, per=25.04%, avg=373.35, stdev=69.08, samples=54 iops : min= 63, max= 127, avg=92.96, stdev=17.29, samples=54 lat (msec) : 50=0.23%, 100=0.51%, 250=94.65%, 500=4.61% cpu : usr=0.15%, sys=1.24%, ctx=2790, 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=1491KiB/s (1527kB/s), 373KiB/s-374KiB/s (382kB/s-383kB/s), io=40.0MiB (41.9MB), run=27365-27464msec 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=179911: Thu Aug 6 13:45:27 2026 read: IOPS=40, BW=163KiB/s (167kB/s)(5048KiB/30901msec) slat (usec): min=85, max=67301, avg=14104.69, stdev=8259.85 clat (msec): min=18, max=391, avg=182.22, stdev=49.87 lat (msec): min=27, max=408, avg=196.33, stdev=51.86 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 108], 10.00th=[ 123], 20.00th=[ 142], | 30.00th=[ 155], 40.00th=[ 167], 50.00th=[ 182], 60.00th=[ 192], | 70.00th=[ 205], 80.00th=[ 222], 90.00th=[ 247], 95.00th=[ 268], | 99.00th=[ 330], 99.50th=[ 342], 99.90th=[ 388], 99.95th=[ 393], | 99.99th=[ 393] bw ( KiB/s): min= 79, max= 247, per=25.09%, avg=162.80, stdev=35.90, samples=61 iops : min= 19, max= 61, avg=40.18, stdev= 9.04, samples=61 write: IOPS=42, BW=168KiB/s (172kB/s)(5192KiB/30901msec); 0 zone resets slat (usec): min=36, max=18955, avg=324.22, stdev=1123.10 clat (msec): min=60, max=382, avg=188.04, stdev=48.42 lat (msec): min=60, max=382, avg=188.37, stdev=48.44 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 112], 10.00th=[ 131], 20.00th=[ 150], | 30.00th=[ 161], 40.00th=[ 174], 50.00th=[ 184], 60.00th=[ 197], | 70.00th=[ 209], 80.00th=[ 220], 90.00th=[ 251], 95.00th=[ 279], | 99.00th=[ 326], 99.50th=[ 334], 99.90th=[ 363], 99.95th=[ 384], | 99.99th=[ 384] bw ( KiB/s): min= 87, max= 280, per=24.78%, avg=167.51, stdev=41.43, samples=61 iops : min= 21, max= 70, avg=41.38, stdev=10.42, samples=61 lat (msec) : 20=0.04%, 50=0.12%, 100=2.70%, 250=87.73%, 500=9.41% cpu : usr=0.22%, sys=1.74%, ctx=3909, majf=0, minf=14 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=179912: Thu Aug 6 13:45:27 2026 read: IOPS=40, BW=161KiB/s (165kB/s)(4976KiB/30835msec) slat (usec): min=2637, max=79574, avg=14491.99, stdev=8484.10 clat (msec): min=49, max=344, avg=181.32, stdev=47.37 lat (msec): min=69, max=385, avg=195.82, stdev=49.50 clat percentiles (msec): | 1.00th=[ 88], 5.00th=[ 105], 10.00th=[ 122], 20.00th=[ 142], | 30.00th=[ 157], 40.00th=[ 167], 50.00th=[ 180], 60.00th=[ 190], | 70.00th=[ 203], 80.00th=[ 218], 90.00th=[ 247], 95.00th=[ 266], | 99.00th=[ 309], 99.50th=[ 317], 99.90th=[ 338], 99.95th=[ 347], | 99.99th=[ 347] bw ( KiB/s): min= 79, max= 272, per=24.67%, avg=160.13, stdev=40.96, samples=61 iops : min= 19, max= 68, avg=39.54, stdev=10.31, samples=61 write: IOPS=42, BW=171KiB/s (175kB/s)(5264KiB/30835msec); 0 zone resets slat (usec): min=41, max=24155, avg=328.28, stdev=1186.93 clat (msec): min=22, max=379, avg=187.39, stdev=47.56 lat (msec): min=24, max=383, avg=187.72, stdev=47.53 clat percentiles (msec): | 1.00th=[ 93], 5.00th=[ 112], 10.00th=[ 130], 20.00th=[ 148], | 30.00th=[ 163], 40.00th=[ 174], 50.00th=[ 184], 60.00th=[ 197], | 70.00th=[ 207], 80.00th=[ 224], 90.00th=[ 249], 95.00th=[ 275], | 99.00th=[ 309], 99.50th=[ 330], 99.90th=[ 347], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 103, max= 239, per=25.16%, avg=170.08, stdev=36.19, samples=61 iops : min= 25, max= 59, avg=42.03, stdev= 9.10, samples=61 lat (msec) : 50=0.08%, 100=3.09%, 250=87.81%, 500=9.02% cpu : usr=0.24%, sys=1.87%, ctx=4187, majf=0, minf=14 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=179913: Thu Aug 6 13:45:27 2026 read: IOPS=40, BW=161KiB/s (165kB/s)(4984KiB/30880msec) slat (usec): min=59, max=77919, avg=14181.05, stdev=8373.99 clat (msec): min=23, max=369, avg=184.06, stdev=49.84 lat (msec): min=28, max=386, avg=198.24, stdev=51.76 clat percentiles (msec): | 1.00th=[ 84], 5.00th=[ 106], 10.00th=[ 125], 20.00th=[ 146], | 30.00th=[ 159], 40.00th=[ 169], 50.00th=[ 182], 60.00th=[ 190], | 70.00th=[ 203], 80.00th=[ 218], 90.00th=[ 247], 95.00th=[ 271], | 99.00th=[ 338], 99.50th=[ 347], 99.90th=[ 359], 99.95th=[ 368], | 99.99th=[ 368] bw ( KiB/s): min= 78, max= 262, per=24.79%, avg=160.92, stdev=38.04, samples=61 iops : min= 19, max= 65, avg=39.69, stdev= 9.57, samples=61 write: IOPS=42, BW=170KiB/s (174kB/s)(5256KiB/30880msec); 0 zone resets slat (usec): min=38, max=8510, avg=285.08, stdev=692.74 clat (msec): min=55, max=375, avg=187.20, stdev=47.65 lat (msec): min=55, max=375, avg=187.49, stdev=47.65 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 109], 10.00th=[ 131], 20.00th=[ 153], | 30.00th=[ 163], 40.00th=[ 174], 50.00th=[ 186], 60.00th=[ 197], | 70.00th=[ 207], 80.00th=[ 220], 90.00th=[ 251], 95.00th=[ 275], | 99.00th=[ 321], 99.50th=[ 338], 99.90th=[ 363], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 71, max= 263, per=24.98%, avg=168.84, stdev=40.35, samples=61 iops : min= 17, max= 65, avg=41.70, stdev=10.13, samples=61 lat (msec) : 50=0.04%, 100=3.12%, 250=86.91%, 500=9.92% cpu : usr=0.29%, sys=1.83%, ctx=4333, majf=0, minf=14 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=179914: Thu Aug 6 13:45:27 2026 read: IOPS=40, BW=164KiB/s (168kB/s)(5060KiB/30903msec) slat (usec): min=84, max=76684, avg=14146.46, stdev=8179.81 clat (msec): min=49, max=373, avg=182.95, stdev=51.23 lat (msec): min=55, max=383, avg=197.11, stdev=53.03 clat percentiles (msec): | 1.00th=[ 86], 5.00th=[ 104], 10.00th=[ 124], 20.00th=[ 142], | 30.00th=[ 157], 40.00th=[ 169], 50.00th=[ 180], 60.00th=[ 192], | 70.00th=[ 203], 80.00th=[ 215], 90.00th=[ 247], 95.00th=[ 279], | 99.00th=[ 338], 99.50th=[ 342], 99.90th=[ 363], 99.95th=[ 376], | 99.99th=[ 376] bw ( KiB/s): min= 95, max= 231, per=25.13%, avg=163.11, stdev=33.27, samples=61 iops : min= 23, max= 57, avg=40.28, stdev= 8.35, samples=61 write: IOPS=41, BW=168KiB/s (172kB/s)(5180KiB/30903msec); 0 zone resets slat (usec): min=37, max=14386, avg=303.59, stdev=891.28 clat (msec): min=65, max=379, avg=187.26, stdev=47.76 lat (msec): min=65, max=380, avg=187.57, stdev=47.71 clat percentiles (msec): | 1.00th=[ 90], 5.00th=[ 106], 10.00th=[ 130], 20.00th=[ 150], | 30.00th=[ 163], 40.00th=[ 176], 50.00th=[ 186], 60.00th=[ 197], | 70.00th=[ 209], 80.00th=[ 222], 90.00th=[ 245], 95.00th=[ 271], | 99.00th=[ 334], 99.50th=[ 347], 99.90th=[ 376], 99.95th=[ 380], | 99.99th=[ 380] bw ( KiB/s): min= 79, max= 257, per=24.55%, avg=165.97, stdev=40.39, samples=61 iops : min= 19, max= 64, avg=40.98, stdev=10.17, samples=61 lat (msec) : 50=0.04%, 100=3.59%, 250=87.30%, 500=9.06% cpu : usr=0.23%, sys=1.83%, ctx=4368, majf=0, minf=15 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=649KiB/s (665kB/s), 161KiB/s-164KiB/s (165kB/s-168kB/s), io=19.6MiB (20.5MB), run=30835-30903msec WRITE: bw=676KiB/s (692kB/s), 168KiB/s-171KiB/s (172kB/s-175kB/s), io=20.4MiB (21.4MB), run=30835-30903msec 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=179924: Thu Aug 6 13:45:41 2026 read: IOPS=1, BW=58.2MiB/s (61.1MB/s)(40.0MiB/687msec) slat (nsec): min=38717k, max=38717k, avg=38716631.00, stdev= 0.00 clat (nsec): min=624303k, max=624303k, avg=624303042.00, stdev= 0.00 lat (nsec): min=663024k, max=663024k, avg=663024033.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 625], 5.00th=[ 625], 10.00th=[ 625], 20.00th=[ 625], | 30.00th=[ 625], 40.00th=[ 625], 50.00th=[ 625], 60.00th=[ 625], | 70.00th=[ 625], 80.00th=[ 625], 90.00th=[ 625], 95.00th=[ 625], | 99.00th=[ 625], 99.50th=[ 625], 99.90th=[ 625], 99.95th=[ 625], | 99.99th=[ 625] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=1.02%, ctx=5, 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=58.2MiB/s (61.1MB/s), 58.2MiB/s-58.2MiB/s (61.1MB/s-61.1MB/s), io=40.0MiB (41.9MB), run=687-687msec 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