Re: TAKE - Small I/O path cleanups

[Steve Lord <lord@sgi.com>]

On Fri, 2002-05-17 at 13:13, Andi Kleen wrote:
> On Fri, May 17, 2002 at 12:21:39PM -0500, Steve Lord wrote:
> > This is worth a few percent on write performance, and about 15% on
> > O_SYNC writes. Basically get more information about the type of I/O
> > we are doing down to the block layer code.
> 
> Are the numbers relative to the old write path or the new write path ? 
> 
> -Andi

The new one, mostly performance was very close to the old, but
O_SYNC took a bit of a dive. I should have a number of other
tweaks like this coming along - I think I may be on the verge
of removing the io lock from xfs, that will be a big win - and
MIGHT let us use the generic write path.

Steve

-- 

Steve Lord                                      voice: +1-651-683-3511
Principal Engineer, Filesystem Software         email: lord@sgi.com