Re: O_DIRECT question

[Nick Piggin]

Bill Davidsen wrote:
> Nick Piggin wrote:
>
> > Aubrey wrote:
> >
> > Exactly, and the *real* fix is to modify userspace not to make > 
> > PAGE_SIZE
> > mallocs[*] if it is to be nommu friendly. It is the kernel hacks to do 
> > things
> > like limit cache size that are the bandaids.
>
>
> Tuning the system to work appropriately for a given load is not a 
> band-aid.

We are talking about about fragmentation. And limiting pagecache to try to
avoid fragmentation is a bandaid, especially when the problem can be solved
(not just papered over, but solved) in userspace.

--
SUSE Labs, Novell Inc.
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