== sanity test 398c: run fio to test AIO ================= 05:38:41 (1788255521) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.384502 s, 109 MB/s osc.lustre-OST0000-osc-ffff8a27921ad000.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=145104: Tue Sep 1 05:41:14 2026 write: IOPS=17, BW=71.6KiB/s (73.3kB/s)(10.0MiB/143004msec); 0 zone resets slat (usec): min=28, max=14862, avg=200.29, stdev=712.16 clat (msec): min=134, max=1772, avg=893.22, stdev=204.82 lat (msec): min=134, max=1772, avg=893.42, stdev=204.84 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 600], 10.00th=[ 659], 20.00th=[ 735], | 30.00th=[ 785], 40.00th=[ 835], 50.00th=[ 885], 60.00th=[ 936], | 70.00th=[ 995], 80.00th=[ 1053], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1452], 99.50th=[ 1519], 99.90th=[ 1720], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 212, per=25.06%, avg=71.41, stdev=30.43, samples=282 iops : min= 1, max= 53, avg=17.40, stdev= 7.65, samples=282 lat (msec) : 250=0.62%, 500=1.25%, 750=20.82%, 1000=49.10%, 2000=28.20% cpu : usr=0.05%, sys=0.24%, ctx=2061, majf=0, minf=8 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=145105: Tue Sep 1 05:41:14 2026 write: IOPS=17, BW=71.5KiB/s (73.2kB/s)(10.0MiB/143233msec); 0 zone resets slat (usec): min=28, max=11815, avg=185.87, stdev=615.53 clat (msec): min=175, max=1700, avg=894.26, stdev=202.33 lat (msec): min=175, max=1700, avg=894.45, stdev=202.34 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 600], 10.00th=[ 667], 20.00th=[ 726], | 30.00th=[ 785], 40.00th=[ 835], 50.00th=[ 902], 60.00th=[ 936], | 70.00th=[ 986], 80.00th=[ 1053], 90.00th=[ 1133], 95.00th=[ 1217], | 99.00th=[ 1435], 99.50th=[ 1536], 99.90th=[ 1687], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7, max= 256, per=25.18%, avg=71.76, stdev=30.29, samples=281 iops : min= 1, max= 64, avg=17.49, stdev= 7.60, samples=281 lat (msec) : 250=0.62%, 500=1.33%, 750=22.54%, 1000=47.58%, 2000=27.93% cpu : usr=0.04%, sys=0.22%, ctx=1873, 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=145106: Tue Sep 1 05:41:14 2026 write: IOPS=17, BW=71.5KiB/s (73.2kB/s)(10.0MiB/143235msec); 0 zone resets slat (usec): min=28, max=14401, avg=193.95, stdev=670.86 clat (msec): min=79, max=1791, avg=894.18, stdev=202.92 lat (msec): min=84, max=1791, avg=894.38, stdev=202.89 clat percentiles (msec): | 1.00th=[ 388], 5.00th=[ 592], 10.00th=[ 667], 20.00th=[ 735], | 30.00th=[ 785], 40.00th=[ 844], 50.00th=[ 894], 60.00th=[ 936], | 70.00th=[ 986], 80.00th=[ 1053], 90.00th=[ 1133], 95.00th=[ 1217], | 99.00th=[ 1485], 99.50th=[ 1552], 99.90th=[ 1737], 99.95th=[ 1754], | 99.99th=[ 1787] bw ( KiB/s): min= 7, max= 144, per=24.91%, avg=70.99, stdev=28.58, samples=284 iops : min= 1, max= 36, avg=17.30, stdev= 7.20, samples=284 lat (msec) : 100=0.12%, 250=0.16%, 500=1.41%, 750=22.34%, 1000=47.81% lat (msec) : 2000=28.16% cpu : usr=0.04%, sys=0.24%, ctx=1930, 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=145107: Tue Sep 1 05:41:14 2026 write: IOPS=17, BW=71.5KiB/s (73.2kB/s)(10.0MiB/143232msec); 0 zone resets slat (usec): min=28, max=17951, avg=203.46, stdev=756.36 clat (msec): min=346, max=1748, avg=894.19, stdev=197.76 lat (msec): min=346, max=1750, avg=894.39, stdev=197.76 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 600], 10.00th=[ 659], 20.00th=[ 726], | 30.00th=[ 793], 40.00th=[ 844], 50.00th=[ 885], 60.00th=[ 936], | 70.00th=[ 986], 80.00th=[ 1053], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1435], 99.50th=[ 1502], 99.90th=[ 1552], 99.95th=[ 1620], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 128, per=25.27%, avg=72.02, stdev=27.19, samples=280 iops : min= 1, max= 32, avg=17.55, stdev= 6.85, samples=280 lat (msec) : 500=1.41%, 750=22.66%, 1000=48.16%, 2000=27.77% cpu : usr=0.05%, sys=0.21%, ctx=1697, 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 Run status group 0 (all jobs): WRITE: bw=286KiB/s (293kB/s), 71.5KiB/s-71.6KiB/s (73.2kB/s-73.3kB/s), io=40.0MiB (41.9MB), run=143004-143235msec 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=145137: Tue Sep 1 05:42:57 2026 read: IOPS=13, BW=52.4KiB/s (53.7kB/s)(5048KiB/96322msec) slat (usec): min=2285, max=44641, avg=12115.40, stdev=6434.44 clat (msec): min=37, max=693, avg=370.78, stdev=87.43 lat (msec): min=50, max=720, avg=382.90, stdev=88.57 clat percentiles (msec): | 1.00th=[ 165], 5.00th=[ 249], 10.00th=[ 271], 20.00th=[ 305], | 30.00th=[ 326], 40.00th=[ 342], 50.00th=[ 363], 60.00th=[ 384], | 70.00th=[ 409], 80.00th=[ 439], 90.00th=[ 477], 95.00th=[ 518], | 99.00th=[ 625], 99.50th=[ 642], 99.90th=[ 693], 99.95th=[ 693], | 99.99th=[ 693] bw ( KiB/s): min= 7, max= 128, per=24.98%, avg=51.97, stdev=23.28, samples=191 iops : min= 1, max= 32, avg=12.55, stdev= 5.86, samples=191 write: IOPS=13, BW=53.9KiB/s (55.2kB/s)(5192KiB/96322msec); 0 zone resets slat (usec): min=31, max=16731, avg=254.92, stdev=865.34 clat (msec): min=215, max=1408, avg=812.49, stdev=200.40 lat (msec): min=215, max=1408, avg=812.74, stdev=200.38 clat percentiles (msec): | 1.00th=[ 405], 5.00th=[ 506], 10.00th=[ 575], 20.00th=[ 651], | 30.00th=[ 701], 40.00th=[ 743], 50.00th=[ 785], 60.00th=[ 844], | 70.00th=[ 902], 80.00th=[ 961], 90.00th=[ 1099], 95.00th=[ 1183], | 99.00th=[ 1334], 99.50th=[ 1385], 99.90th=[ 1401], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 7, max= 111, per=24.70%, avg=53.36, stdev=20.16, samples=191 iops : min= 1, max= 27, avg=12.90, stdev= 5.04, samples=191 lat (msec) : 50=0.12%, 100=0.08%, 250=2.46%, 500=45.51%, 750=21.95% lat (msec) : 1000=21.48%, 2000=8.40% cpu : usr=0.09%, sys=0.60%, ctx=4258, 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=145138: Tue Sep 1 05:42:57 2026 read: IOPS=12, BW=51.7KiB/s (52.0kB/s)(4976KiB/96164msec) slat (usec): min=53, max=59558, avg=11956.91, stdev=6534.70 clat (msec): min=13, max=855, avg=373.37, stdev=95.32 lat (msec): min=19, max=862, avg=385.33, stdev=95.99 clat percentiles (msec): | 1.00th=[ 69], 5.00th=[ 249], 10.00th=[ 275], 20.00th=[ 309], | 30.00th=[ 326], 40.00th=[ 347], 50.00th=[ 368], 60.00th=[ 388], | 70.00th=[ 409], 80.00th=[ 443], 90.00th=[ 485], 95.00th=[ 535], | 99.00th=[ 642], 99.50th=[ 693], 99.90th=[ 785], 99.95th=[ 852], | 99.99th=[ 852] bw ( KiB/s): min= 7, max= 112, per=24.71%, avg=51.41, stdev=21.59, samples=190 iops : min= 1, max= 28, avg=12.41, stdev= 5.39, samples=190 write: IOPS=13, BW=54.7KiB/s (56.1kB/s)(5264KiB/96164msec); 0 zone resets slat (usec): min=32, max=9273, avg=209.72, stdev=546.36 clat (msec): min=95, max=1369, avg=804.11, stdev=210.10 lat (msec): min=96, max=1369, avg=804.32, stdev=210.10 clat percentiles (msec): | 1.00th=[ 224], 5.00th=[ 493], 10.00th=[ 567], 20.00th=[ 642], | 30.00th=[ 693], 40.00th=[ 743], 50.00th=[ 785], 60.00th=[ 844], | 70.00th=[ 902], 80.00th=[ 969], 90.00th=[ 1099], 95.00th=[ 1183], | 99.00th=[ 1318], 99.50th=[ 1334], 99.90th=[ 1368], 99.95th=[ 1368], | 99.99th=[ 1368] bw ( KiB/s): min= 7, max= 143, per=25.06%, avg=54.13, stdev=21.76, samples=191 iops : min= 1, max= 35, avg=13.09, stdev= 5.45, samples=191 lat (msec) : 20=0.08%, 50=0.23%, 100=0.35%, 250=2.42%, 500=44.49% lat (msec) : 750=22.73%, 1000=20.98%, 2000=8.71% cpu : usr=0.08%, sys=0.55%, ctx=3939, 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=145139: Tue Sep 1 05:42:57 2026 read: IOPS=12, BW=51.7KiB/s (52.9kB/s)(4984KiB/96418msec) slat (usec): min=2903, max=47905, avg=12365.45, stdev=6391.17 clat (msec): min=17, max=683, avg=372.69, stdev=88.39 lat (msec): min=41, max=731, avg=385.06, stdev=89.11 clat percentiles (msec): | 1.00th=[ 126], 5.00th=[ 249], 10.00th=[ 275], 20.00th=[ 305], | 30.00th=[ 330], 40.00th=[ 347], 50.00th=[ 368], 60.00th=[ 388], | 70.00th=[ 409], 80.00th=[ 439], 90.00th=[ 485], 95.00th=[ 527], | 99.00th=[ 609], 99.50th=[ 617], 99.90th=[ 684], 99.95th=[ 684], | 99.99th=[ 684] bw ( KiB/s): min= 7, max= 152, per=24.56%, avg=51.09, stdev=21.89, samples=191 iops : min= 1, max= 38, avg=12.34, stdev= 5.48, samples=191 write: IOPS=13, BW=54.5KiB/s (55.8kB/s)(5256KiB/96418msec); 0 zone resets slat (usec): min=31, max=10388, avg=228.56, stdev=679.42 clat (msec): min=192, max=1423, avg=806.70, stdev=208.69 lat (msec): min=192, max=1423, avg=806.93, stdev=208.70 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 489], 10.00th=[ 558], 20.00th=[ 642], | 30.00th=[ 701], 40.00th=[ 743], 50.00th=[ 793], 60.00th=[ 844], | 70.00th=[ 894], 80.00th=[ 978], 90.00th=[ 1083], 95.00th=[ 1183], | 99.00th=[ 1334], 99.50th=[ 1368], 99.90th=[ 1385], 99.95th=[ 1418], | 99.99th=[ 1418] bw ( KiB/s): min= 7, max= 111, per=24.78%, avg=53.52, stdev=18.36, samples=191 iops : min= 1, max= 27, avg=12.94, stdev= 4.62, samples=191 lat (msec) : 20=0.04%, 50=0.16%, 100=0.27%, 250=2.54%, 500=44.69% lat (msec) : 750=22.42%, 1000=21.25%, 2000=8.63% cpu : usr=0.08%, sys=0.60%, ctx=4411, 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=145140: Tue Sep 1 05:42:57 2026 read: IOPS=13, BW=52.7KiB/s (53.0kB/s)(5060KiB/96017msec) slat (usec): min=2392, max=54466, avg=12113.81, stdev=6474.78 clat (msec): min=17, max=807, avg=371.39, stdev=90.25 lat (msec): min=28, max=815, avg=383.51, stdev=91.20 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 247], 10.00th=[ 279], 20.00th=[ 305], | 30.00th=[ 326], 40.00th=[ 347], 50.00th=[ 363], 60.00th=[ 384], | 70.00th=[ 409], 80.00th=[ 443], 90.00th=[ 481], 95.00th=[ 518], | 99.00th=[ 634], 99.50th=[ 659], 99.90th=[ 709], 99.95th=[ 810], | 99.99th=[ 810] bw ( KiB/s): min= 7, max= 111, per=25.22%, avg=52.45, stdev=22.12, samples=190 iops : min= 1, max= 27, avg=12.67, stdev= 5.55, samples=190 write: IOPS=13, BW=53.9KiB/s (55.2kB/s)(5180KiB/96017msec); 0 zone resets slat (usec): min=30, max=12045, avg=216.07, stdev=623.27 clat (msec): min=148, max=1440, avg=809.48, stdev=212.28 lat (msec): min=148, max=1440, avg=809.70, stdev=212.28 clat percentiles (msec): | 1.00th=[ 342], 5.00th=[ 485], 10.00th=[ 558], 20.00th=[ 642], | 30.00th=[ 701], 40.00th=[ 743], 50.00th=[ 793], 60.00th=[ 844], | 70.00th=[ 902], 80.00th=[ 986], 90.00th=[ 1099], 95.00th=[ 1200], | 99.00th=[ 1368], 99.50th=[ 1401], 99.90th=[ 1435], 99.95th=[ 1435], | 99.99th=[ 1435] bw ( KiB/s): min= 8, max= 112, per=24.60%, avg=53.13, stdev=19.99, samples=191 iops : min= 2, max= 28, avg=12.84, stdev= 4.98, samples=191 lat (msec) : 20=0.04%, 50=0.20%, 100=0.16%, 250=2.46%, 500=46.29% lat (msec) : 750=21.05%, 1000=20.78%, 2000=9.02% cpu : usr=0.11%, sys=0.59%, ctx=4296, 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=208KiB/s (213kB/s), 51.7KiB/s-52.7KiB/s (52.9kB/s-53.0kB/s), io=19.6MiB (20.5MB), run=96017-96418msec WRITE: bw=217KiB/s (222kB/s), 53.9KiB/s-54.7KiB/s (55.2kB/s-56.1kB/s), io=20.4MiB (21.4MB), run=96017-96418msec 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=145158: Tue Sep 1 05:43:06 2026 read: IOPS=1, BW=64.1MiB/s (67.2MB/s)(40.0MiB/624msec) slat (nsec): min=28484k, max=28484k, avg=28484410.00, stdev= 0.00 clat (nsec): min=579927k, max=579927k, avg=579926868.00, stdev= 0.00 lat (nsec): min=608417k, max=608417k, avg=608417077.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 584], 5.00th=[ 584], 10.00th=[ 584], 20.00th=[ 584], | 30.00th=[ 584], 40.00th=[ 584], 50.00th=[ 584], 60.00th=[ 584], | 70.00th=[ 584], 80.00th=[ 584], 90.00th=[ 584], 95.00th=[ 584], | 99.00th=[ 584], 99.50th=[ 584], 99.90th=[ 584], 99.95th=[ 584], | 99.99th=[ 584] lat (msec) : 750=100.00% cpu : usr=0.00%, sys=2.25%, ctx=39, 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=64.1MiB/s (67.2MB/s), 64.1MiB/s-64.1MiB/s (67.2MB/s-67.2MB/s), io=40.0MiB (41.9MB), run=624-624msec 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