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Re: TAKE - write performance improvement

To: Steve Lord <lord@xxxxxxx>
Subject: Re: TAKE - write performance improvement
From: Rajagopal Ananthanarayanan <ananth@xxxxxxx>
Date: Tue, 29 Aug 2000 12:00:01 -0700
Cc: linux-xfs@xxxxxxxxxxx
References: <200008291644.LAA04616@jen.americas.sgi.com>
Sender: owner-linux-xfs@xxxxxxxxxxx
Steve Lord wrote:
> 
> > >
> > > I am backing out this change, it breaks doio, and probably anything else
> > > which fills holes in files. I think we had a similar test condition in
> > > this code path before, and it was removed to fix corruption. There has
> > > got to be another variant of this which we can use.
> > >
> > > Steve
> > >
> >
> > OK, now I am puzzled, I still got corruption after I backed out the mod,
> > I removed the old doio output file and the corruption went away on 
> > subsequent
> > runs and I have not been able to reproduce it with or without the mod again.
> I
> > will run some more tests and probably be putting the mod back in again 
> > shortl
> y.
> >
> > Sorry for the confusion.
> >
> > Steve
> >
> 
> Looks like the corruption is once again coming out of the clustering write
> code in pagebuf, I would recommend not using the kiocluster mount option
> at the moment. I am doing a glibc build with Ananth's change back in again
> and put it back into the tree if the build works OK.
> 


Yikes! Sorry if my change caused this problem.
But I ran rpmbuild, kernel build and doio (1,2
threads) before checking-in the change ...


-- 
--------------------------------------------------------------------------
Rajagopal Ananthanarayanan ("ananth")
Member Technical Staff, SGI.
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