Hi, Jeff: I run "ceph osd tell osd_num bench" with 1 times per osd and use ceph -w to observe every osd performance, osd0: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 10.875844 sec at 96413 KB/sec osd1: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 11.784985 sec at 88975 KB/sec osd2: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 11.161067 sec at 93949 KB/sec osd3: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 10.798796 sec at 97101 KB/sec osd4: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 14.437141 sec at 72630 KB/sec osd5: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 14.451444 sec at 72558 KB/sec osd6: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 11.083872 sec at 94603 KB/sec osd7: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 11.062728 sec at 94784 KB/sec osd8: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 14.137312 sec at 74170 KB/sec osd9: [INF] bench: wrote 1024 MB in blocks of 4096 KB in 13.489992 sec at 77729 KB/sec and I run root@MDS2:/mnt/ceph# rados bench 60 write -p data the result is Total time run: 60.553247 Total writes made: 1689 Write size: 4194304 Bandwidth (MB/sec): 111.571 Average Latency: 0.573209 Max latency: 2.25691 Min latency: 0.218494 2011/5/17 Jeff Wu <cpwu@xxxxxxxxxxxxx>: > Hi AnnyRen > > Could you run the following commands and give us the test results? > > $ceph osd tell OSD-N bench // OSD-N : osd number : 0,1,2 .... > $ceph -w > > $rados bench 60 write -p data // refer to "rados -h " > > Jeff > > > > On Tue, 2011-05-17 at 11:53 +0800, AnnyRen wrote: >> I'm running iozone on EXT4 with Ceph v0.26. >> But I got the weird result, most write performance exceed 1GB/s, even >> up to 3GB/s >> I think it's not normal to get the performance outpupt. >> >> Command line I used is: /usr/bin/iozone -azcR -f >> /mnt/ceph/test0516.dbf -g 1G -b /exceloutput0516.xls >> Attachment is the output file... >> >> and my environment is composed of 15 physical machines with >> >> 3 MON, 2MDS (1 active, 1 standby), 10 OSD (1 osd daemon (3T) /host) >> EXT4 format >> data replication size: 3 >> >> >> >> "Writer report" >> "4" "8" "16" "32" "64" "128" "256" "512" "1024" >> "2048" "4096" "8192" "16384" >> "64" 983980 1204796 1210227 1143223 1357066 >> "128" 1007629 1269781 1406136 1391557 1436229 1521718 >> "256" 1112909 1430119 1523457 1652404 1514860 1639786 1729594 >> "512" 1150351 1475116 1605228 1723770 1797349 1712772 1783912 1854787 >> "1024" 1213334 1471481 1679160 1828574 1888889 1899750 1885572 >> 1865912 1875690 >> "2048" 1229274 1540849 1708146 1843410 1903457 1980705 1930406 >> 1913634 1906837 1815744 >> "4096" 1213284 1528348 1674646 1762434 1872096 1882352 1881528 >> 1903416 1897949 1835102 1731177 >> "8192" 204560 155186 572387 238548 186597 429036 187327 >> 157205 553771 416512 299810 405842 >> "16384" 699749 559255 687450 541030 828776 555296 742561 >> 525483 604910 452423 564557 670539 970616 >> "32768" 532414 829610 812215 879441 863159 864794 865938 >> 804951 916352 879582 608132 860732 1239475 >> "65536" 994824 1096543 1095791 1317968 1280277 1390267 1259868 >> 1205214 1339111 1346927 1267888 863234 1190221 >> "131072" 1063429 1165115 1102650 1554828 1182128 1185731 >> 1190752 1195792 1277441 1211063 1237567 1226999 1336961 >> "262144" 1280619 1368554 1497837 1633397 1598255 1609212 >> 1607504 1665019 1590515 1548307 1591258 1505267 1625679 >> "524288" 1519583 1767928 1738523 1883151 2011216 1993877 >> 2023543 1867440 2106124 2055064 1906668 1778645 1838988 >> "1048576" 1580851 1887530 2044131 2166133 2236379 2283578 >> 2257454 2296612 2271066 2101274 1905829 1605923 2158238 >> >> >> >> "Reader report" >> "4" "8" "16" "32" "64" "128" "256" "512" "1024" >> "2048" "4096" "8192" "16384" >> "64" 1933893 2801873 3057153 3363612 3958892 >> "128" 2286447 3053774 2727923 3468030 4104338 4557257 >> "256" 2903529 3236056 3245838 3705040 3654598 4496299 5117791 >> "512" 2906696 3437042 3628697 3431550 4871723 4296637 6246213 6395018 >> "1024" 3229770 3483896 4609294 3791442 4614246 5536137 4550690 >> 5048117 4966395 >> "2048" 3554251 4310472 3885431 4096676 6401772 4842658 5080379 >> 5184636 5596757 5735012 >> "4096" 3416292 4691638 4321103 5728903 5475122 5171846 4819300 >> 5258919 6408472 5044289 4079948 >> "8192" 3233004 4615263 4536055 5618186 5414558 5025700 5553712 >> 4926264 5634770 5281396 4659702 3652258 >> "16384" 3141058 3704193 4567654 4395850 4568869 5387732 >> 4436432 5808029 5578420 4675810 3913007 3911225 3961277 >> "32768" 3704273 4598957 4088278 5133719 5896692 5537024 >> 5234412 5398271 4942992 4118662 3729099 3511757 3481511 >> "65536" 4131091 4210184 5341188 4647619 6077765 5852474 >> 5379762 5259330 5488249 5246682 4342682 3549202 3286487 >> "131072" 3582876 5251082 5332216 5269908 5303512 5574440 >> 5635064 5796372 5406363 4958839 4435918 3673443 3647874 >> "262144" 3659283 4551414 5746231 5433824 5876196 6011650 >> 5552000 5629260 5298830 4982226 4628902 4065823 3421924 >> "524288" 3905973 5488778 5219963 6047356 5916811 6180455 >> 5495733 5925628 5637512 5537123 3517132 3550861 3047013 >> "1048576" 3855595 5634571 5410298 6001809 6464713 6299610 >> 5894249 5516031 5800161 5209203 4295840 3724983 3641623 > > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
