Re: [RFC] [PATCH] Include LRU in page count

Daniel Phillips
2002-09-01T23:35:06Z

On Monday 02 September 2002 01:08, Andrew Morton wrote:
> Daniel Phillips wrote:
> It would be great to make presence on the LRU contribute to page->count, because
> that would permit the removal of a ton of page_cache_get/release operations inside
> the LRU lock, perhaps doubling throughput in there.

It's pretty much done, it just needs some torture testing:

http://people.nl.linux.org/~phillips/patches/lru.race-2.4.19

The handy /proc/mmstat ad hoc statistics are still in there. The patch supports
both zero and one-flavors of lru contribution to page count for the time being,
with the latter as the default.

> Guess I should get off my
> lazy butt and see what you've done (will you for heaven's sake go and buy an IDE
> disk and compile up a 2.5 kernel? :))

I was just thinking about that, time to go poke at the DAC960 again. Yes I do
remember Jens and Bill offered to help :-)

--
Daniel