== sanity test 398c: run fio to test AIO ================= 09:15:41 (1787663741) /usr/bin/fio debug=0 40+0 records in 40+0 records out 41943040 bytes (42 MB, 40 MiB) copied, 0.469182 s, 89.4 MB/s osc.lustre-OST0000-osc-ffffa0fcb8ce7000.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=146852: Tue Aug 25 09:18:36 2026 write: IOPS=15, BW=62.5KiB/s (63.0kB/s)(10.0MiB/163911msec); 0 zone resets slat (usec): min=42, max=34192, avg=351.73, stdev=1163.69 clat (msec): min=172, max=1840, avg=1022.88, stdev=259.17 lat (msec): min=172, max=1840, avg=1023.23, stdev=259.22 clat percentiles (msec): | 1.00th=[ 264], 5.00th=[ 625], 10.00th=[ 709], 20.00th=[ 835], | 30.00th=[ 919], 40.00th=[ 969], 50.00th=[ 1020], 60.00th=[ 1083], | 70.00th=[ 1133], 80.00th=[ 1217], 90.00th=[ 1351], 95.00th=[ 1452], | 99.00th=[ 1703], 99.50th=[ 1720], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1838] bw ( KiB/s): min= 7, max= 215, per=25.47%, avg=63.42, stdev=30.16, samples=317 iops : min= 1, max= 53, avg=15.36, stdev= 7.56, samples=317 lat (msec) : 250=0.62%, 500=2.50%, 750=9.18%, 1000=33.91%, 2000=53.79% cpu : usr=0.05%, sys=0.31%, ctx=2122, 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=146853: Tue Aug 25 09:18:36 2026 write: IOPS=15, BW=62.5KiB/s (64.0kB/s)(10.0MiB/163738msec); 0 zone resets slat (usec): min=42, max=20656, avg=348.77, stdev=1015.11 clat (msec): min=124, max=1925, avg=1022.43, stdev=255.34 lat (msec): min=124, max=1926, avg=1022.78, stdev=255.33 clat percentiles (msec): | 1.00th=[ 288], 5.00th=[ 625], 10.00th=[ 726], 20.00th=[ 835], | 30.00th=[ 902], 40.00th=[ 969], 50.00th=[ 1028], 60.00th=[ 1083], | 70.00th=[ 1133], 80.00th=[ 1217], 90.00th=[ 1334], 95.00th=[ 1435], | 99.00th=[ 1653], 99.50th=[ 1770], 99.90th=[ 1921], 99.95th=[ 1921], | 99.99th=[ 1921] bw ( KiB/s): min= 8, max= 223, per=25.00%, avg=62.24, stdev=30.29, samples=323 iops : min= 2, max= 55, avg=15.07, stdev= 7.60, samples=323 lat (msec) : 250=0.59%, 500=2.30%, 750=9.26%, 1000=32.58%, 2000=55.27% cpu : usr=0.05%, sys=0.29%, ctx=1997, 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=146854: Tue Aug 25 09:18:36 2026 write: IOPS=15, BW=62.5KiB/s (63.0kB/s)(10.0MiB/163947msec); 0 zone resets slat (usec): min=36, max=19964, avg=326.52, stdev=986.92 clat (msec): min=188, max=1927, avg=1023.29, stdev=252.07 lat (msec): min=188, max=1927, avg=1023.62, stdev=252.08 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 625], 10.00th=[ 735], 20.00th=[ 835], | 30.00th=[ 911], 40.00th=[ 961], 50.00th=[ 1020], 60.00th=[ 1070], | 70.00th=[ 1133], 80.00th=[ 1217], 90.00th=[ 1351], 95.00th=[ 1435], | 99.00th=[ 1670], 99.50th=[ 1703], 99.90th=[ 1821], 99.95th=[ 1838], | 99.99th=[ 1921] bw ( KiB/s): min= 7, max= 254, per=24.94%, avg=62.09, stdev=28.99, samples=324 iops : min= 1, max= 63, avg=15.03, stdev= 7.27, samples=324 lat (msec) : 250=0.70%, 500=1.95%, 750=8.44%, 1000=35.16%, 2000=53.75% cpu : usr=0.05%, sys=0.30%, ctx=1984, 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=146855: Tue Aug 25 09:18:36 2026 write: IOPS=15, BW=62.4KiB/s (63.9kB/s)(10.0MiB/163983msec); 0 zone resets slat (usec): min=43, max=20170, avg=354.47, stdev=1071.54 clat (msec): min=165, max=1871, avg=1023.49, stdev=249.90 lat (msec): min=166, max=1872, avg=1023.85, stdev=249.94 clat percentiles (msec): | 1.00th=[ 321], 5.00th=[ 634], 10.00th=[ 726], 20.00th=[ 835], | 30.00th=[ 911], 40.00th=[ 978], 50.00th=[ 1020], 60.00th=[ 1083], | 70.00th=[ 1133], 80.00th=[ 1217], 90.00th=[ 1334], 95.00th=[ 1418], | 99.00th=[ 1653], 99.50th=[ 1703], 99.90th=[ 1838], 99.95th=[ 1838], | 99.99th=[ 1871] bw ( KiB/s): min= 8, max= 254, per=25.01%, avg=62.28, stdev=26.42, samples=323 iops : min= 2, max= 63, avg=15.07, stdev= 6.62, samples=323 lat (msec) : 250=0.62%, 500=1.95%, 750=9.49%, 1000=33.20%, 2000=54.73% cpu : usr=0.04%, sys=0.32%, ctx=2295, 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=250KiB/s (256kB/s), 62.4KiB/s-62.5KiB/s (63.9kB/s-64.0kB/s), io=40.0MiB (41.9MB), run=163738-163983msec 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=146888: Tue Aug 25 09:20:40 2026 read: IOPS=10, BW=43.7KiB/s (44.7kB/s)(5048KiB/115608msec) slat (usec): min=2893, max=57158, avg=15468.42, stdev=7704.14 clat (msec): min=15, max=874, avg=450.59, stdev=99.20 lat (msec): min=21, max=888, avg=466.07, stdev=99.84 clat percentiles (msec): | 1.00th=[ 205], 5.00th=[ 300], 10.00th=[ 334], 20.00th=[ 372], | 30.00th=[ 401], 40.00th=[ 426], 50.00th=[ 447], 60.00th=[ 472], | 70.00th=[ 498], 80.00th=[ 527], 90.00th=[ 575], 95.00th=[ 609], | 99.00th=[ 693], 99.50th=[ 726], 99.90th=[ 869], 99.95th=[ 877], | 99.99th=[ 877] bw ( KiB/s): min= 7, max= 119, per=25.04%, avg=43.31, stdev=20.19, samples=228 iops : min= 1, max= 29, avg=10.31, stdev= 5.07, samples=228 write: IOPS=11, BW=44.9KiB/s (45.0kB/s)(5192KiB/115608msec); 0 zone resets slat (usec): min=55, max=17966, avg=455.41, stdev=1220.00 clat (msec): min=352, max=1736, avg=967.65, stdev=218.31 lat (msec): min=356, max=1736, avg=968.11, stdev=218.32 clat percentiles (msec): | 1.00th=[ 443], 5.00th=[ 642], 10.00th=[ 701], 20.00th=[ 776], | 30.00th=[ 835], 40.00th=[ 902], 50.00th=[ 953], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1150], 90.00th=[ 1234], 95.00th=[ 1351], | 99.00th=[ 1536], 99.50th=[ 1569], 99.90th=[ 1687], 99.95th=[ 1737], | 99.99th=[ 1737] bw ( KiB/s): min= 7, max= 103, per=24.64%, avg=44.34, stdev=18.15, samples=229 iops : min= 1, max= 25, avg=10.56, stdev= 4.52, samples=229 lat (msec) : 20=0.04%, 50=0.04%, 100=0.16%, 250=0.66%, 500=34.84% lat (msec) : 750=21.48%, 1000=21.02%, 2000=21.76% cpu : usr=0.09%, sys=0.71%, ctx=4814, 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=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=146889: Tue Aug 25 09:20:40 2026 read: IOPS=10, BW=43.1KiB/s (44.2kB/s)(4976KiB/115399msec) slat (usec): min=2806, max=57522, avg=15342.34, stdev=8090.21 clat (msec): min=11, max=1027, avg=448.17, stdev=107.30 lat (msec): min=19, max=1039, avg=463.52, stdev=108.27 clat percentiles (msec): | 1.00th=[ 207], 5.00th=[ 292], 10.00th=[ 321], 20.00th=[ 359], | 30.00th=[ 397], 40.00th=[ 418], 50.00th=[ 443], 60.00th=[ 468], | 70.00th=[ 493], 80.00th=[ 535], 90.00th=[ 584], 95.00th=[ 617], | 99.00th=[ 693], 99.50th=[ 785], 99.90th=[ 1020], 99.95th=[ 1028], | 99.99th=[ 1028] bw ( KiB/s): min= 7, max= 96, per=24.67%, avg=42.67, stdev=19.58, samples=228 iops : min= 1, max= 24, avg=10.14, stdev= 4.93, samples=228 write: IOPS=11, BW=45.6KiB/s (46.7kB/s)(5264KiB/115399msec); 0 zone resets slat (usec): min=55, max=17055, avg=452.90, stdev=1152.04 clat (msec): min=366, max=1646, avg=961.52, stdev=217.43 lat (msec): min=366, max=1647, avg=961.98, stdev=217.39 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 625], 10.00th=[ 693], 20.00th=[ 776], | 30.00th=[ 835], 40.00th=[ 894], 50.00th=[ 953], 60.00th=[ 1011], | 70.00th=[ 1062], 80.00th=[ 1150], 90.00th=[ 1234], 95.00th=[ 1334], | 99.00th=[ 1519], 99.50th=[ 1536], 99.90th=[ 1569], 99.95th=[ 1653], | 99.99th=[ 1653] bw ( KiB/s): min= 7, max= 103, per=25.21%, avg=45.38, stdev=19.70, samples=227 iops : min= 1, max= 25, avg=10.82, stdev= 4.93, samples=227 lat (msec) : 20=0.04%, 100=0.23%, 250=0.66%, 500=34.34%, 750=21.48% lat (msec) : 1000=21.21%, 2000=22.03% cpu : usr=0.10%, sys=0.67%, ctx=4704, 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=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=146890: Tue Aug 25 09:20:40 2026 read: IOPS=10, BW=43.1KiB/s (44.1kB/s)(4984KiB/115608msec) slat (usec): min=3154, max=47416, avg=15073.02, stdev=7383.87 clat (msec): min=21, max=799, avg=447.98, stdev=100.91 lat (msec): min=25, max=827, avg=463.06, stdev=101.58 clat percentiles (msec): | 1.00th=[ 190], 5.00th=[ 292], 10.00th=[ 330], 20.00th=[ 372], | 30.00th=[ 401], 40.00th=[ 426], 50.00th=[ 447], 60.00th=[ 472], | 70.00th=[ 498], 80.00th=[ 531], 90.00th=[ 575], 95.00th=[ 617], | 99.00th=[ 684], 99.50th=[ 693], 99.90th=[ 768], 99.95th=[ 802], | 99.99th=[ 802] bw ( KiB/s): min= 7, max= 95, per=24.89%, avg=43.05, stdev=18.37, samples=227 iops : min= 1, max= 23, avg=10.24, stdev= 4.56, samples=227 write: IOPS=11, BW=45.5KiB/s (46.6kB/s)(5256KiB/115608msec); 0 zone resets slat (usec): min=56, max=9820, avg=415.97, stdev=895.53 clat (msec): min=376, max=1699, avg=964.65, stdev=221.74 lat (msec): min=376, max=1699, avg=965.07, stdev=221.77 clat percentiles (msec): | 1.00th=[ 472], 5.00th=[ 634], 10.00th=[ 693], 20.00th=[ 776], | 30.00th=[ 844], 40.00th=[ 902], 50.00th=[ 969], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1133], 90.00th=[ 1234], 95.00th=[ 1334], | 99.00th=[ 1552], 99.50th=[ 1620], 99.90th=[ 1670], 99.95th=[ 1703], | 99.99th=[ 1703] bw ( KiB/s): min= 7, max= 103, per=25.01%, avg=45.01, stdev=19.64, samples=228 iops : min= 1, max= 25, avg=10.73, stdev= 4.93, samples=228 lat (msec) : 50=0.20%, 100=0.16%, 250=0.90%, 500=33.75%, 750=21.84% lat (msec) : 1000=20.35%, 2000=22.81% cpu : usr=0.10%, sys=0.69%, ctx=4853, 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=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=146891: Tue Aug 25 09:20:40 2026 read: IOPS=11, BW=44.0KiB/s (45.1kB/s)(5060KiB/114943msec) slat (usec): min=94, max=58803, avg=14967.13, stdev=7658.60 clat (msec): min=14, max=1396, avg=452.47, stdev=115.73 lat (msec): min=16, max=1420, avg=467.44, stdev=116.74 clat percentiles (msec): | 1.00th=[ 140], 5.00th=[ 288], 10.00th=[ 326], 20.00th=[ 372], | 30.00th=[ 401], 40.00th=[ 426], 50.00th=[ 447], 60.00th=[ 472], | 70.00th=[ 502], 80.00th=[ 535], 90.00th=[ 584], 95.00th=[ 625], | 99.00th=[ 709], 99.50th=[ 852], 99.90th=[ 1267], 99.95th=[ 1401], | 99.99th=[ 1401] bw ( KiB/s): min= 7, max= 96, per=25.24%, avg=43.67, stdev=18.33, samples=227 iops : min= 1, max= 24, avg=10.40, stdev= 4.59, samples=227 write: IOPS=11, BW=45.1KiB/s (46.1kB/s)(5180KiB/114943msec); 0 zone resets slat (usec): min=56, max=19509, avg=456.19, stdev=1304.99 clat (msec): min=164, max=1775, avg=961.52, stdev=232.30 lat (msec): min=165, max=1775, avg=961.98, stdev=232.25 clat percentiles (msec): | 1.00th=[ 401], 5.00th=[ 592], 10.00th=[ 676], 20.00th=[ 768], | 30.00th=[ 844], 40.00th=[ 902], 50.00th=[ 961], 60.00th=[ 1020], | 70.00th=[ 1083], 80.00th=[ 1150], 90.00th=[ 1250], 95.00th=[ 1334], | 99.00th=[ 1552], 99.50th=[ 1603], 99.90th=[ 1770], 99.95th=[ 1770], | 99.99th=[ 1770] bw ( KiB/s): min= 7, max= 96, per=24.86%, avg=44.75, stdev=18.33, samples=226 iops : min= 1, max= 24, avg=10.66, stdev= 4.60, samples=226 lat (msec) : 20=0.08%, 50=0.12%, 100=0.16%, 250=0.90%, 500=34.38% lat (msec) : 750=22.46%, 1000=20.12%, 2000=21.80% cpu : usr=0.09%, sys=0.63%, ctx=4864, 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=174KiB/s (178kB/s), 43.1KiB/s-44.0KiB/s (44.1kB/s-45.1kB/s), io=19.6MiB (20.5MB), run=114943-115608msec WRITE: bw=181KiB/s (185kB/s), 44.9KiB/s-45.6KiB/s (45.0kB/s-46.7kB/s), io=20.4MiB (21.4MB), run=114943-115608msec 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=146912: Tue Aug 25 09:20:50 2026 read: IOPS=1, BW=59.8MiB/s (62.7MB/s)(40.0MiB/669msec) slat (nsec): min=56971k, max=56971k, avg=56971125.00, stdev= 0.00 clat (nsec): min=587015k, max=587015k, avg=587014867.00, stdev= 0.00 lat (nsec): min=643991k, max=643991k, avg=643991204.00, 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=0.45%, sys=2.54%, ctx=41, 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=59.8MiB/s (62.7MB/s), 59.8MiB/s-59.8MiB/s (62.7MB/s-62.7MB/s), io=40.0MiB (41.9MB), run=669-669msec 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