[Ocfs-users] OCFS Performance vs. Raw

[Wim Coekaerts]

ok, weird.. how big is the clustersize of the filesystem ?
are you usign something like powerpath or so underneath ocfs ?

when you use raw I assuem it's the same backend device ?

weird

On Fri, Jun 18, 2004 at 09:51:26AM -0700, David McWhinnie wrote:
> I should also add that once the tablesapce is created
> we see the same slow downs during write intensive
> operations.  The create tablepace is the fastest and
> simplest way to reproduce the problem.
> 
> David.
> 
> --- Wim Coekaerts <wim.coekaerts at oracle.com> wrote:
> > is this  created  with oracle, eg create tablespae 
> > or are you doing dd
> > 
> > On Fri, Jun 18, 2004 at 08:23:23AM -0700, David
> > McWhinnie wrote:
> > > We are seeing some performance issues runnig on
> > 64-bit
> > > Linux.  Running against a raw partition we can get
> > > 100MB/s write speed when creating a datafile. 
> > Using
> > > OCFS we get 30-40MB/s and at times it is so slow
> > it is
> > > hard to measure.
> > > 
> > > Anyone else see these issues?  We are running the
> > > latest versions of both Oracle and OCFS.  I've
> > opened
> > > a ticket with Oracle but am interested in other's
> > > experiences.
> > > 
> > > 
> > > 
> > > 
> > > 	
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> 
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