Re: [PATCH 28/33] readahead: loop case

wfg
2006-05-25T15:48:44Z

On Wed, May 24, 2006 at 10:01:35PM +0800, Limin Wang wrote:
>
> If the loopback files is bigger than the memory size, it may cause miss again and
> may better to turn on the read ahead?
>

The readahead is always on, it's only disabling lookahead :-)

> > Disable look-ahead for loop file.
> >
> > Loopback files normally contain filesystems, in which case there are already
> > proper look-aheads in the upper layer, more look-aheads on the loopback file
> > only ruins the read-ahead hit rate.