[Lustre-discuss] Single file write performance tuning

[Henwood, Richard]

On Thu, 2013-05-09 at 14:59 +0530, Parinay Kondekar wrote:
> You might want to take a look at
> - http://wiki.lustre.org/manual/LustreManual20_HTML/LustreProc.html ,
> (Lustre IO tunables) if not already.
> 
> 

Given you're using 2.3, the Manual maintained at:
http://build.whamcloud.com/job/lustre-manual/lastSuccessfulBuild/artifact/lustre_manual.xhtml
maybe a better reference for you.

... as pointed out by Chris on this thread, however, there is an open
issue (LU-1669) that will probably prove more of a restriction than
adjusting turntables.

cheers,
Richard

> 
> 
> On 6 May 2013 23:57, Mike Ware <charnobyl3000 at gmail.com> wrote:
>         Hi All,
>         I am currently working on a 3 node oss cluster on centos 6.3
>         with lustre 2.3 with 12 osts on qdr infiniband.  This is just
>         a test bed cluster at this point and will be further scaled
>         out.  Currently my single file, single client write speed is
>         about 840MB/s (tested with dd). I'm looking to get this up to
>         1300-1500MB/s with a multithreaded app to a single file from a
>         single client. The file is currently striped across all osts.
>         Does anyone have any tuning pointers to achieve this kind of
>         performance for this setup?
>         
>         
>         Thanks
>         Mike
>         
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> 
> 
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-- 
Richard.Henwood at intel.com
High Performance Data Division