[Lustre-discuss] Performance drop (1.6.5 vs, OFED 1.2)?

Johann Lombardi johann at sun.com
Sun Oct 19 22:59:20 PDT 2008

On Fri, Oct 17, 2008 at 05:49:43PM -0700, Mike Bui wrote:
> I have Lustre and want to downgrade to Lustre for better
> performance, how would I do this ?  Please advise.

If you are not using quotas, there should be no problems to downgrade.

However, I *suspect* that you will achieve the same results with if you
disable LRU resize (on a live system, see my previous email, or at configure
time by using --disable-lru-resize). Please also note that:
* checksumming is disabled by default in 1.6.4* whereas it is enabled in
  (see bug 13805 for more details).
* the performance drop was only noticed with a single stream.


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