On Mon, 29 Jul 2002, Andrew Morton wrote:

quoted

 Similarly, you would want to be very
cautious about increasing the size of the read-ahead window of many pages
at the end of the inactive list are being re-used.

I tend to think that if pages at the tail of the LRU are being
referenced with any frequency we've goofed anyway.  There are
many things apart from readahead which will allocate pages, yes?

It would be a useful thing to measure, though.

We can use this information to decide to:

1) reduce readahead and, if if the situation continues

2) do load control

regards,

Rik
-- 
Bravely reimplemented by the knights who say "NIH".

http://www.surriel.com/		http://distro.conectiva.com/

--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org.  For more info on Linux MM,
see: http://www.linux-mm.org/