[Linux-cluster] cluster architecture

[IVANYI Ivan]

I've got 3 nodes direct attached to SAN. The performance of GFS has disappointed 
me a bit so far. Maybe I've got something wrong but then again documentation is 
lacking... unless I'm looking in the wrong places.

Previously in a slightly different configuration I had only a slight performance 
hit with IBM's GPFS.

Rick Stevens wrote:
> vahram wrote:
> 
>> Raw throughput isn't really an issue for us.  We're more interested in 
>> seek times.  My biggest concern with GFS is stability and 
>> performance...any feedback in regards to that would be greatly 
>> appreciated.  Thanks!
> 
> 
> So far, GFS has worked quite well under our tests.  We have yet to have
> it break.  Our current GFS implementation is only on two nodes with gulm
> running on a separate lock server.  I intend to update the kernels on
> those nodes sometime this week (to the 2.6.11 variety) and change the
> locking from gulm to cman (since that seems to be fixed at this point).

Again not too sure about the different locking mechanisms .. do you mean 
cman/dlm? will this work better for you?


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Ivan Ivanyi

Swiss Institute of Bioinformatics
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     Switzerland

     Tel: (+41 22) 379 58 33
     Fax: (+41 22) 379 58 58
     E-mail: Ivan.Ivanyi at isb-sib.ch



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