== sanity test 398c: run fio to test AIO ================= 10:21:49 (1790950909) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.390006 s, 108 MB/s osc.lustre-OST0000-osc-ffff9548f9760800.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=146258: Fri Oct 2 10:24:28 2026 write: IOPS=17, BW=68.4KiB/s (70.1kB/s)(10.0MiB/149674msec); 0 zone resets slat (usec): min=26, max=21418, avg=262.75, stdev=882.07 clat (msec): min=142, max=1625, avg=934.14, stdev=195.19 lat (msec): min=143, max=1625, avg=934.41, stdev=195.15 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 609], 10.00th=[ 693], 20.00th=[ 802], | 30.00th=[ 844], 40.00th=[ 894], 50.00th=[ 936], 60.00th=[ 978], | 70.00th=[ 1020], 80.00th=[ 1083], 90.00th=[ 1167], 95.00th=[ 1234], | 99.00th=[ 1452], 99.50th=[ 1502], 99.90th=[ 1586], 99.95th=[ 1620], | 99.99th=[ 1620] bw ( KiB/s): min= 8, max= 144, per=24.91%, avg=68.00, stdev=24.59, samples=296 iops : min= 2, max= 36, avg=16.49, stdev= 6.21, samples=296 lat (msec) : 250=0.08%, 500=1.99%, 750=12.19%, 1000=51.02%, 2000=34.73% cpu : usr=0.05%, sys=0.24%, ctx=1868, 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=146259: Fri Oct 2 10:24:28 2026 write: IOPS=17, BW=68.5KiB/s (70.1kB/s)(10.0MiB/149476msec); 0 zone resets slat (usec): min=24, max=21188, avg=247.83, stdev=824.02 clat (msec): min=157, max=1752, avg=933.41, stdev=196.15 lat (msec): min=158, max=1753, avg=933.66, stdev=196.13 clat percentiles (msec): | 1.00th=[ 355], 5.00th=[ 617], 10.00th=[ 693], 20.00th=[ 793], | 30.00th=[ 860], 40.00th=[ 902], 50.00th=[ 936], 60.00th=[ 978], | 70.00th=[ 1028], 80.00th=[ 1083], 90.00th=[ 1167], 95.00th=[ 1217], | 99.00th=[ 1485], 99.50th=[ 1552], 99.90th=[ 1603], 99.95th=[ 1603], | 99.99th=[ 1754] bw ( KiB/s): min= 7, max= 248, per=25.35%, avg=69.19, stdev=32.25, samples=291 iops : min= 1, max= 62, avg=16.79, stdev= 8.08, samples=291 lat (msec) : 250=0.08%, 500=2.42%, 750=11.48%, 1000=51.56%, 2000=34.45% cpu : usr=0.05%, sys=0.24%, ctx=1667, 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=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=146260: Fri Oct 2 10:24:28 2026 write: IOPS=17, BW=68.4KiB/s (70.1kB/s)(10.0MiB/149663msec); 0 zone resets slat (usec): min=28, max=18124, avg=238.66, stdev=892.35 clat (msec): min=289, max=1811, avg=934.09, stdev=198.75 lat (msec): min=290, max=1811, avg=934.33, stdev=198.75 clat percentiles (msec): | 1.00th=[ 351], 5.00th=[ 617], 10.00th=[ 701], 20.00th=[ 785], | 30.00th=[ 844], 40.00th=[ 894], 50.00th=[ 936], 60.00th=[ 969], | 70.00th=[ 1020], 80.00th=[ 1083], 90.00th=[ 1167], 95.00th=[ 1234], | 99.00th=[ 1469], 99.50th=[ 1502], 99.90th=[ 1569], 99.95th=[ 1569], | 99.99th=[ 1804] bw ( KiB/s): min= 7, max= 128, per=25.97%, avg=70.90, stdev=30.82, samples=284 iops : min= 1, max= 32, avg=17.22, stdev= 7.74, samples=284 lat (msec) : 500=2.62%, 750=12.34%, 1000=50.78%, 2000=34.26% cpu : usr=0.04%, sys=0.24%, ctx=1745, 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=146261: Fri Oct 2 10:24:28 2026 write: IOPS=17, BW=68.4KiB/s (69.0kB/s)(10.0MiB/149814msec); 0 zone resets slat (usec): min=28, max=15363, avg=248.90, stdev=842.06 clat (msec): min=285, max=1589, avg=934.98, stdev=191.17 lat (msec): min=286, max=1589, avg=935.23, stdev=191.20 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 625], 10.00th=[ 701], 20.00th=[ 793], | 30.00th=[ 852], 40.00th=[ 894], 50.00th=[ 936], 60.00th=[ 978], | 70.00th=[ 1020], 80.00th=[ 1070], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1452], 99.50th=[ 1519], 99.90th=[ 1552], 99.95th=[ 1586], | 99.99th=[ 1586] bw ( KiB/s): min= 7, max= 128, per=24.74%, avg=67.55, stdev=23.59, samples=298 iops : min= 1, max= 32, avg=16.38, stdev= 5.92, samples=298 lat (msec) : 500=2.07%, 750=11.72%, 1000=51.13%, 2000=35.08% cpu : usr=0.06%, sys=0.23%, ctx=1863, 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=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=273KiB/s (280kB/s), 68.4KiB/s-68.5KiB/s (69.0kB/s-70.1kB/s), io=40.0MiB (41.9MB), run=149476-149814msec 4% of I/O are 1-page (PAGE_SIZE=4096), max 50% 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=146294: Fri Oct 2 10:26:15 2026 read: IOPS=12, BW=50.9KiB/s (52.2kB/s)(5048KiB/99110msec) slat (usec): min=2979, max=58487, avg=13098.16, stdev=6964.04 clat (msec): min=16, max=882, avg=398.72, stdev=101.61 lat (msec): min=20, max=898, avg=411.83, stdev=102.62 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 253], 10.00th=[ 284], 20.00th=[ 317], | 30.00th=[ 347], 40.00th=[ 368], 50.00th=[ 393], 60.00th=[ 422], | 70.00th=[ 447], 80.00th=[ 477], 90.00th=[ 523], 95.00th=[ 558], | 99.00th=[ 676], 99.50th=[ 735], 99.90th=[ 810], 99.95th=[ 885], | 99.99th=[ 885] bw ( KiB/s): min= 7, max= 112, per=24.88%, avg=50.26, stdev=22.74, samples=197 iops : min= 1, max= 28, avg=12.12, stdev= 5.68, samples=197 write: IOPS=13, BW=52.4KiB/s (53.6kB/s)(5192KiB/99110msec); 0 zone resets slat (usec): min=30, max=18039, avg=284.36, stdev=976.53 clat (msec): min=252, max=1527, avg=818.85, stdev=239.42 lat (msec): min=253, max=1527, avg=819.14, stdev=239.40 clat percentiles (msec): | 1.00th=[ 363], 5.00th=[ 456], 10.00th=[ 510], 20.00th=[ 600], | 30.00th=[ 676], 40.00th=[ 743], 50.00th=[ 802], 60.00th=[ 869], | 70.00th=[ 944], 80.00th=[ 1036], 90.00th=[ 1150], 95.00th=[ 1234], | 99.00th=[ 1418], 99.50th=[ 1485], 99.90th=[ 1519], 99.95th=[ 1536], | 99.99th=[ 1536] bw ( KiB/s): min= 15, max= 104, per=24.66%, avg=51.78, stdev=20.33, samples=197 iops : min= 3, max= 26, avg=12.50, stdev= 5.11, samples=197 lat (msec) : 20=0.04%, 50=0.08%, 100=0.12%, 250=2.07%, 500=44.22% lat (msec) : 750=24.02%, 1000=17.38%, 2000=12.07% cpu : usr=0.10%, sys=0.65%, ctx=4559, 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=146295: Fri Oct 2 10:26:15 2026 read: IOPS=12, BW=50.2KiB/s (51.4kB/s)(4976KiB/99109msec) slat (usec): min=40, max=47757, avg=13319.73, stdev=6810.29 clat (msec): min=30, max=761, avg=398.05, stdev=97.30 lat (msec): min=41, max=772, avg=411.38, stdev=98.34 clat percentiles (msec): | 1.00th=[ 186], 5.00th=[ 255], 10.00th=[ 284], 20.00th=[ 317], | 30.00th=[ 347], 40.00th=[ 372], 50.00th=[ 393], 60.00th=[ 422], | 70.00th=[ 447], 80.00th=[ 472], 90.00th=[ 523], 95.00th=[ 558], | 99.00th=[ 659], 99.50th=[ 701], 99.90th=[ 718], 99.95th=[ 760], | 99.99th=[ 760] bw ( KiB/s): min= 7, max= 144, per=24.55%, avg=49.59, stdev=23.03, samples=197 iops : min= 1, max= 36, avg=11.95, stdev= 5.79, samples=197 write: IOPS=13, BW=53.1KiB/s (54.4kB/s)(5264KiB/99109msec); 0 zone resets slat (usec): min=34, max=10659, avg=309.80, stdev=828.41 clat (msec): min=172, max=1563, avg=815.26, stdev=239.15 lat (msec): min=172, max=1563, avg=815.57, stdev=239.12 clat percentiles (msec): | 1.00th=[ 368], 5.00th=[ 460], 10.00th=[ 510], 20.00th=[ 592], | 30.00th=[ 667], 40.00th=[ 743], 50.00th=[ 802], 60.00th=[ 869], | 70.00th=[ 944], 80.00th=[ 1036], 90.00th=[ 1133], 95.00th=[ 1217], | 99.00th=[ 1385], 99.50th=[ 1418], 99.90th=[ 1552], 99.95th=[ 1569], | 99.99th=[ 1569] bw ( KiB/s): min= 8, max= 111, per=24.97%, avg=52.43, stdev=22.44, samples=197 iops : min= 2, max= 27, avg=12.66, stdev= 5.61, samples=197 lat (msec) : 50=0.16%, 100=0.23%, 250=2.23%, 500=43.91%, 750=23.32% lat (msec) : 1000=18.16%, 2000=11.99% cpu : usr=0.10%, sys=0.64%, ctx=4153, 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=146296: Fri Oct 2 10:26:15 2026 read: IOPS=12, BW=50.2KiB/s (51.4kB/s)(4984KiB/99248msec) slat (usec): min=2654, max=46241, avg=13342.02, stdev=7033.84 clat (msec): min=12, max=727, avg=395.53, stdev=92.56 lat (msec): min=18, max=738, avg=408.89, stdev=93.58 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 268], 10.00th=[ 288], 20.00th=[ 321], | 30.00th=[ 342], 40.00th=[ 363], 50.00th=[ 384], 60.00th=[ 414], | 70.00th=[ 439], 80.00th=[ 472], 90.00th=[ 518], 95.00th=[ 558], | 99.00th=[ 659], 99.50th=[ 684], 99.90th=[ 693], 99.95th=[ 726], | 99.99th=[ 726] bw ( KiB/s): min= 7, max= 135, per=24.59%, avg=49.68, stdev=23.69, samples=197 iops : min= 1, max= 33, avg=11.97, stdev= 5.91, samples=197 write: IOPS=13, BW=52.0KiB/s (54.2kB/s)(5256KiB/99248msec); 0 zone resets slat (usec): min=32, max=21544, avg=314.67, stdev=1027.81 clat (msec): min=127, max=1547, avg=818.41, stdev=239.95 lat (msec): min=127, max=1547, avg=818.73, stdev=239.91 clat percentiles (msec): | 1.00th=[ 317], 5.00th=[ 460], 10.00th=[ 510], 20.00th=[ 600], | 30.00th=[ 676], 40.00th=[ 743], 50.00th=[ 810], 60.00th=[ 877], | 70.00th=[ 953], 80.00th=[ 1028], 90.00th=[ 1133], 95.00th=[ 1217], | 99.00th=[ 1401], 99.50th=[ 1452], 99.90th=[ 1552], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 7, max= 104, per=24.74%, avg=51.94, stdev=19.83, samples=197 iops : min= 1, max= 26, avg=12.54, stdev= 4.99, samples=197 lat (msec) : 20=0.04%, 50=0.08%, 100=0.04%, 250=1.64%, 500=45.16% lat (msec) : 750=23.01%, 1000=17.89%, 2000=12.15% cpu : usr=0.09%, sys=0.67%, ctx=4515, 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=146297: Fri Oct 2 10:26:15 2026 read: IOPS=12, BW=51.1KiB/s (52.3kB/s)(5060KiB/99008msec) slat (usec): min=2774, max=47458, avg=13366.10, stdev=6925.56 clat (msec): min=17, max=797, avg=400.18, stdev=96.53 lat (msec): min=23, max=805, avg=413.56, stdev=97.35 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 259], 10.00th=[ 292], 20.00th=[ 321], | 30.00th=[ 347], 40.00th=[ 368], 50.00th=[ 393], 60.00th=[ 414], | 70.00th=[ 447], 80.00th=[ 477], 90.00th=[ 523], 95.00th=[ 558], | 99.00th=[ 676], 99.50th=[ 693], 99.90th=[ 785], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 120, per=25.10%, avg=50.70, stdev=23.02, samples=196 iops : min= 1, max= 30, avg=12.23, stdev= 5.74, samples=196 write: IOPS=13, BW=52.3KiB/s (53.6kB/s)(5180KiB/99008msec); 0 zone resets slat (usec): min=28, max=10220, avg=284.79, stdev=738.36 clat (msec): min=195, max=1546, avg=816.93, stdev=232.03 lat (msec): min=199, max=1546, avg=817.22, stdev=231.98 clat percentiles (msec): | 1.00th=[ 376], 5.00th=[ 468], 10.00th=[ 518], 20.00th=[ 617], | 30.00th=[ 676], 40.00th=[ 735], 50.00th=[ 802], 60.00th=[ 860], | 70.00th=[ 936], 80.00th=[ 1020], 90.00th=[ 1133], 95.00th=[ 1217], | 99.00th=[ 1401], 99.50th=[ 1469], 99.90th=[ 1519], 99.95th=[ 1552], | 99.99th=[ 1552] bw ( KiB/s): min= 7, max= 112, per=24.70%, avg=51.87, stdev=21.66, samples=196 iops : min= 1, max= 28, avg=12.53, stdev= 5.45, samples=196 lat (msec) : 20=0.04%, 50=0.08%, 250=1.88%, 500=44.41%, 750=24.41% lat (msec) : 1000=17.77%, 2000=11.41% cpu : usr=0.11%, sys=0.62%, ctx=4011, 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=202KiB/s (207kB/s), 50.2KiB/s-51.1KiB/s (51.4kB/s-52.3kB/s), io=19.6MiB (20.5MB), run=99008-99248msec WRITE: bw=211KiB/s (216kB/s), 52.3KiB/s-53.1KiB/s (53.6kB/s-54.4kB/s), io=20.4MiB (21.4MB), run=99008-99248msec 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=146315: Fri Oct 2 10:26:21 2026 read: IOPS=3, BW=129MiB/s (135MB/s)(40.0MiB/310msec) slat (nsec): min=30524k, max=30524k, avg=30523660.00, stdev= 0.00 clat (nsec): min=267211k, max=267211k, avg=267211194.00, stdev= 0.00 lat (nsec): min=297740k, max=297740k, avg=297740238.00, stdev= 0.00 clat percentiles (msec): | 1.00th=[ 268], 5.00th=[ 268], 10.00th=[ 268], 20.00th=[ 268], | 30.00th=[ 268], 40.00th=[ 268], 50.00th=[ 268], 60.00th=[ 268], | 70.00th=[ 268], 80.00th=[ 268], 90.00th=[ 268], 95.00th=[ 268], | 99.00th=[ 268], 99.50th=[ 268], 99.90th=[ 268], 99.95th=[ 268], | 99.99th=[ 268] lat (msec) : 500=100.00% cpu : usr=0.00%, sys=2.59%, ctx=39, majf=0, minf=10 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=129MiB/s (135MB/s), 129MiB/s-129MiB/s (135MB/s-135MB/s), io=40.0MiB (41.9MB), run=310-310msec 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