== sanity test 398c: run fio to test AIO ================= 09:43:28 (1787665408) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.382497 s, 110 MB/s osc.lustre-OST0000-osc-ffffa00711a0b800.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=174905: Tue Aug 25 09:46:28 2026 write: IOPS=14, BW=59.3KiB/s (60.7kB/s)(10.0MiB/172756msec); 0 zone resets slat (usec): min=50, max=11752, avg=260.61, stdev=718.52 clat (msec): min=194, max=2048, avg=1078.46, stdev=264.96 lat (msec): min=195, max=2049, avg=1078.72, stdev=264.94 clat percentiles (msec): | 1.00th=[ 330], 5.00th=[ 667], 10.00th=[ 768], 20.00th=[ 877], | 30.00th=[ 944], 40.00th=[ 1011], 50.00th=[ 1070], 60.00th=[ 1133], | 70.00th=[ 1200], 80.00th=[ 1284], 90.00th=[ 1401], 95.00th=[ 1536], | 99.00th=[ 1720], 99.50th=[ 1754], 99.90th=[ 1921], 99.95th=[ 1989], | 99.99th=[ 2056] bw ( KiB/s): min= 7, max= 135, per=25.03%, avg=59.08, stdev=27.96, samples=341 iops : min= 1, max= 33, avg=14.34, stdev= 7.00, samples=341 lat (msec) : 250=0.04%, 500=2.27%, 750=6.02%, 1000=30.08%, 2000=61.56% lat (msec) : >=2000=0.04% cpu : usr=0.04%, sys=0.24%, ctx=1885, 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=174906: Tue Aug 25 09:46:28 2026 write: IOPS=14, BW=59.1KiB/s (60.5kB/s)(10.0MiB/173225msec); 0 zone resets slat (usec): min=50, max=19371, avg=289.37, stdev=987.78 clat (msec): min=195, max=1803, avg=1081.51, stdev=259.07 lat (msec): min=195, max=1803, avg=1081.81, stdev=259.04 clat percentiles (msec): | 1.00th=[ 435], 5.00th=[ 667], 10.00th=[ 776], 20.00th=[ 885], | 30.00th=[ 944], 40.00th=[ 1020], 50.00th=[ 1070], 60.00th=[ 1133], | 70.00th=[ 1200], 80.00th=[ 1284], 90.00th=[ 1401], 95.00th=[ 1569], | 99.00th=[ 1720], 99.50th=[ 1754], 99.90th=[ 1804], 99.95th=[ 1804], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 135, per=25.25%, avg=59.60, stdev=29.30, samples=338 iops : min= 1, max= 33, avg=14.47, stdev= 7.35, samples=338 lat (msec) : 250=0.04%, 500=2.19%, 750=6.13%, 1000=29.22%, 2000=62.42% cpu : usr=0.04%, sys=0.26%, ctx=1843, 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=174907: Tue Aug 25 09:46:28 2026 write: IOPS=14, BW=59.2KiB/s (60.7kB/s)(10.0MiB/172853msec); 0 zone resets slat (usec): min=51, max=18618, avg=260.89, stdev=734.21 clat (msec): min=60, max=2083, avg=1079.47, stdev=270.40 lat (msec): min=60, max=2083, avg=1079.74, stdev=270.37 clat percentiles (msec): | 1.00th=[ 393], 5.00th=[ 684], 10.00th=[ 785], 20.00th=[ 877], | 30.00th=[ 944], 40.00th=[ 1011], 50.00th=[ 1070], 60.00th=[ 1133], | 70.00th=[ 1200], 80.00th=[ 1301], 90.00th=[ 1418], 95.00th=[ 1552], | 99.00th=[ 1737], 99.50th=[ 1804], 99.90th=[ 1871], 99.95th=[ 2089], | 99.99th=[ 2089] bw ( KiB/s): min= 7, max= 194, per=24.95%, avg=58.88, stdev=24.91, samples=342 iops : min= 1, max= 48, avg=14.29, stdev= 6.24, samples=342 lat (msec) : 100=0.04%, 250=0.51%, 500=1.91%, 750=5.86%, 1000=30.82% lat (msec) : 2000=60.78%, >=2000=0.08% cpu : usr=0.04%, sys=0.25%, ctx=2147, 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=174908: Tue Aug 25 09:46:28 2026 write: IOPS=14, BW=59.2KiB/s (60.6kB/s)(10.0MiB/173025msec); 0 zone resets slat (usec): min=50, max=11437, avg=239.83, stdev=621.43 clat (msec): min=295, max=2008, avg=1080.13, stdev=265.36 lat (msec): min=296, max=2008, avg=1080.37, stdev=265.34 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 667], 10.00th=[ 785], 20.00th=[ 877], | 30.00th=[ 944], 40.00th=[ 1011], 50.00th=[ 1083], 60.00th=[ 1133], | 70.00th=[ 1200], 80.00th=[ 1284], 90.00th=[ 1418], 95.00th=[ 1552], | 99.00th=[ 1754], 99.50th=[ 1804], 99.90th=[ 1838], 99.95th=[ 1938], | 99.99th=[ 2005] bw ( KiB/s): min= 7, max= 128, per=25.11%, avg=59.25, stdev=24.90, samples=340 iops : min= 1, max= 32, avg=14.39, stdev= 6.28, samples=340 lat (msec) : 500=2.27%, 750=5.70%, 1000=30.62%, 2000=61.37%, >=2000=0.04% cpu : usr=0.04%, sys=0.24%, ctx=1798, 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=236KiB/s (242kB/s), 59.1KiB/s-59.3KiB/s (60.5kB/s-60.7kB/s), io=40.0MiB (41.9MB), run=172756-173225msec 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=174943: Tue Aug 25 09:48:31 2026 read: IOPS=10, BW=43.9KiB/s (44.0kB/s)(5048KiB/114905msec) slat (usec): min=54, max=67468, avg=14191.79, stdev=8437.03 clat (msec): min=41, max=1145, avg=446.17, stdev=132.37 lat (msec): min=42, max=1150, avg=460.37, stdev=134.66 clat percentiles (msec): | 1.00th=[ 209], 5.00th=[ 279], 10.00th=[ 305], 20.00th=[ 347], | 30.00th=[ 372], 40.00th=[ 401], 50.00th=[ 426], 60.00th=[ 456], | 70.00th=[ 489], 80.00th=[ 535], 90.00th=[ 617], 95.00th=[ 693], | 99.00th=[ 852], 99.50th=[ 927], 99.90th=[ 1133], 99.95th=[ 1150], | 99.99th=[ 1150] bw ( KiB/s): min= 7, max= 119, per=25.61%, avg=44.30, stdev=19.35, samples=224 iops : min= 1, max= 29, avg=10.63, stdev= 4.81, samples=224 write: IOPS=11, BW=45.2KiB/s (46.3kB/s)(5192KiB/114905msec); 0 zone resets slat (usec): min=53, max=17661, avg=330.55, stdev=940.08 clat (msec): min=162, max=1993, avg=967.24, stdev=282.06 lat (msec): min=162, max=1993, avg=967.57, stdev=282.01 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 609], 10.00th=[ 693], 20.00th=[ 768], | 30.00th=[ 818], 40.00th=[ 869], 50.00th=[ 936], 60.00th=[ 986], | 70.00th=[ 1045], 80.00th=[ 1133], 90.00th=[ 1301], 95.00th=[ 1536], | 99.00th=[ 1938], 99.50th=[ 1955], 99.90th=[ 1989], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 7, max= 101, per=25.06%, avg=45.11, stdev=20.21, samples=225 iops : min= 1, max= 25, avg=10.83, stdev= 5.13, samples=225 lat (msec) : 50=0.16%, 100=0.23%, 250=1.13%, 500=35.23%, 750=20.70% lat (msec) : 1000=23.36%, 2000=19.18% cpu : usr=0.08%, sys=0.61%, ctx=4611, 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=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=174944: Tue Aug 25 09:48:31 2026 read: IOPS=10, BW=43.0KiB/s (44.1kB/s)(4976KiB/115655msec) slat (usec): min=2698, max=81884, avg=14254.67, stdev=8241.23 clat (msec): min=24, max=1026, avg=447.37, stdev=130.92 lat (msec): min=33, max=1030, avg=461.63, stdev=132.77 clat percentiles (msec): | 1.00th=[ 211], 5.00th=[ 279], 10.00th=[ 309], 20.00th=[ 347], | 30.00th=[ 376], 40.00th=[ 401], 50.00th=[ 426], 60.00th=[ 451], | 70.00th=[ 493], 80.00th=[ 542], 90.00th=[ 617], 95.00th=[ 684], | 99.00th=[ 869], 99.50th=[ 927], 99.90th=[ 995], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 112, per=24.66%, avg=42.66, stdev=20.18, samples=228 iops : min= 1, max= 28, avg=10.21, stdev= 5.04, samples=228 write: IOPS=11, BW=45.5KiB/s (46.6kB/s)(5264KiB/115655msec); 0 zone resets slat (usec): min=57, max=12551, avg=316.42, stdev=793.12 clat (msec): min=234, max=1953, avg=967.45, stdev=261.08 lat (msec): min=234, max=1954, avg=967.76, stdev=261.06 clat percentiles (msec): | 1.00th=[ 409], 5.00th=[ 617], 10.00th=[ 684], 20.00th=[ 768], | 30.00th=[ 827], 40.00th=[ 885], 50.00th=[ 936], 60.00th=[ 986], | 70.00th=[ 1053], 80.00th=[ 1133], 90.00th=[ 1284], 95.00th=[ 1469], | 99.00th=[ 1821], 99.50th=[ 1871], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 7, max= 111, per=24.98%, avg=44.97, stdev=20.31, samples=230 iops : min= 1, max= 27, avg=10.80, stdev= 5.13, samples=230 lat (msec) : 50=0.08%, 100=0.16%, 250=1.02%, 500=34.77%, 750=20.27% lat (msec) : 1000=23.71%, 2000=20.00% cpu : usr=0.08%, sys=0.54%, ctx=4493, 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=174945: Tue Aug 25 09:48:31 2026 read: IOPS=10, BW=43.1KiB/s (44.2kB/s)(4984KiB/115550msec) slat (usec): min=2533, max=54051, avg=14328.05, stdev=8032.64 clat (msec): min=16, max=1008, avg=444.88, stdev=132.93 lat (msec): min=27, max=1031, avg=459.21, stdev=135.24 clat percentiles (msec): | 1.00th=[ 215], 5.00th=[ 275], 10.00th=[ 309], 20.00th=[ 342], | 30.00th=[ 376], 40.00th=[ 401], 50.00th=[ 426], 60.00th=[ 447], | 70.00th=[ 481], 80.00th=[ 535], 90.00th=[ 625], 95.00th=[ 693], | 99.00th=[ 877], 99.50th=[ 936], 99.90th=[ 995], 99.95th=[ 1011], | 99.99th=[ 1011] bw ( KiB/s): min= 7, max= 119, per=24.61%, avg=42.57, stdev=20.54, samples=230 iops : min= 1, max= 29, avg=10.20, stdev= 5.13, samples=230 write: IOPS=11, BW=45.5KiB/s (46.6kB/s)(5256KiB/115550msec); 0 zone resets slat (usec): min=52, max=20217, avg=358.93, stdev=1023.90 clat (msec): min=140, max=1987, avg=969.03, stdev=268.64 lat (msec): min=140, max=1987, avg=969.39, stdev=268.68 clat percentiles (msec): | 1.00th=[ 414], 5.00th=[ 609], 10.00th=[ 684], 20.00th=[ 760], | 30.00th=[ 818], 40.00th=[ 885], 50.00th=[ 936], 60.00th=[ 1003], | 70.00th=[ 1053], 80.00th=[ 1150], 90.00th=[ 1301], 95.00th=[ 1519], | 99.00th=[ 1854], 99.50th=[ 1905], 99.90th=[ 1938], 99.95th=[ 1989], | 99.99th=[ 1989] bw ( KiB/s): min= 7, max= 104, per=24.83%, avg=44.70, stdev=18.82, samples=230 iops : min= 1, max= 26, avg=10.73, stdev= 4.75, samples=230 lat (msec) : 20=0.04%, 50=0.16%, 100=0.16%, 250=0.98%, 500=35.59% lat (msec) : 750=19.65%, 1000=22.81%, 2000=20.62% cpu : usr=0.08%, sys=0.61%, ctx=4713, 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=174946: Tue Aug 25 09:48:31 2026 read: IOPS=10, BW=43.9KiB/s (44.9kB/s)(5060KiB/115347msec) slat (usec): min=2803, max=64852, avg=14174.37, stdev=8216.54 clat (msec): min=19, max=987, avg=442.95, stdev=128.43 lat (msec): min=28, max=1009, avg=457.13, stdev=130.47 clat percentiles (msec): | 1.00th=[ 153], 5.00th=[ 271], 10.00th=[ 305], 20.00th=[ 342], | 30.00th=[ 376], 40.00th=[ 401], 50.00th=[ 422], 60.00th=[ 451], | 70.00th=[ 493], 80.00th=[ 542], 90.00th=[ 617], 95.00th=[ 684], | 99.00th=[ 835], 99.50th=[ 902], 99.90th=[ 969], 99.95th=[ 986], | 99.99th=[ 986] bw ( KiB/s): min= 7, max= 104, per=25.30%, avg=43.78, stdev=19.59, samples=227 iops : min= 1, max= 26, avg=10.49, stdev= 4.90, samples=227 write: IOPS=11, BW=44.9KiB/s (45.0kB/s)(5180KiB/115347msec); 0 zone resets slat (usec): min=52, max=11266, avg=326.72, stdev=770.06 clat (msec): min=200, max=1953, avg=976.25, stdev=270.29 lat (msec): min=200, max=1953, avg=976.58, stdev=270.28 clat percentiles (msec): | 1.00th=[ 430], 5.00th=[ 617], 10.00th=[ 693], 20.00th=[ 768], | 30.00th=[ 827], 40.00th=[ 894], 50.00th=[ 953], 60.00th=[ 1003], | 70.00th=[ 1062], 80.00th=[ 1150], 90.00th=[ 1284], 95.00th=[ 1502], | 99.00th=[ 1888], 99.50th=[ 1955], 99.90th=[ 1955], 99.95th=[ 1955], | 99.99th=[ 1955] bw ( KiB/s): min= 7, max= 96, per=24.81%, avg=44.65, stdev=18.47, samples=227 iops : min= 1, max= 24, avg=10.72, stdev= 4.68, samples=227 lat (msec) : 20=0.04%, 50=0.08%, 100=0.35%, 250=0.78%, 500=35.20% lat (msec) : 750=20.70%, 1000=22.34%, 2000=20.51% cpu : usr=0.08%, sys=0.61%, ctx=4564, 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=174KiB/s (178kB/s), 43.0KiB/s-43.9KiB/s (44.1kB/s-44.0kB/s), io=19.6MiB (20.5MB), run=114905-115655msec WRITE: bw=181KiB/s (185kB/s), 44.9KiB/s-45.5KiB/s (45.0kB/s-46.6kB/s), io=20.4MiB (21.4MB), run=114905-115655msec 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=174966: Tue Aug 25 09:48:40 2026 read: IOPS=2, BW=108MiB/s (113MB/s)(40.0MiB/371msec) slat (nsec): min=26191k, max=26191k, avg=26191453.00, stdev= 0.00 clat (nsec): min=314204k, max=314204k, avg=314204157.00, stdev= 0.00 lat (nsec): min=340400k, max=340400k, avg=340400012.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 313], 5.00th=[ 313], 10.00th=[ 313], 20.00th=[ 313], | 30.00th=[ 313], 40.00th=[ 313], 50.00th=[ 313], 60.00th=[ 313], | 70.00th=[ 313], 80.00th=[ 313], 90.00th=[ 313], 95.00th=[ 313], | 99.00th=[ 313], 99.50th=[ 313], 99.90th=[ 313], 99.95th=[ 313], | 99.99th=[ 313] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.43%, ctx=10, 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=108MiB/s (113MB/s), 108MiB/s-108MiB/s (113MB/s-113MB/s), io=40.0MiB (41.9MB), run=371-371msec 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