From: Jeff Wu <cpwu@tnsoft.com.cn>
To: AnnyRen <annyren6@gmail.com>
Cc: "ceph-devel@vger.kernel.org" <ceph-devel@vger.kernel.org>
Subject: Re: IOZone Performance is very Strange
Date: Tue, 17 May 2011 13:23:59 +0000 [thread overview]
Message-ID: <1305638639.1606.4.camel@localhost> (raw)
In-Reply-To: <BANLkTiktOCMyP4opCvST_130TotXvSvuyQ@mail.gmail.com>
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
next prev parent reply other threads:[~2011-05-17 5:23 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-17 3:53 IOZone Performance is very Strange AnnyRen
2011-05-17 13:23 ` Jeff Wu [this message]
2011-05-17 7:34 ` AnnyRen
2011-05-17 8:19 ` Simon Tian
2011-05-17 9:07 ` AnnyRen
2011-05-17 17:05 ` Jeff Wu
2011-05-17 9:14 ` Henry C Chang
2011-05-17 9:44 ` AnnyRen
2011-05-17 9:37 ` AnnyRen
2011-05-18 5:54 ` AnnyRen
2011-05-18 14:08 ` Jeff Wu
2011-05-18 6:24 ` AnnyRen
2011-05-18 14:48 ` Jeff Wu
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