[lkml]   [2001]   [Jun]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] Remove nr_async_pages limit
Alan Cox <> writes:

> > This patch removes the limit on the number of async pages in the
> > flight.
> I have this in all 2.4.5-ac. It does help a little but there are some other
> bits you have to deal with too, in paticular wrong aging. See the -ac version

Yes, I'll check -ac to see your changes. Although, I can't see what is
the impact of the unlimited number of the async pages on the aging, I
don't see a connection?!

In the mean time I tested the patch even more thoroughly under various
loads and I can't find any problem with it. Performance is same or
better a little bit, as you say. :)

My other patch (enlarging inactive dirty list) has a much bigger
impact on the aging process, but I also see only improvement with
it. I think that swap_out path should be tweaked a little bit (it is
too aggressive now), and then things will come up even better.

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 12:54    [W:0.063 / U:1.992 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site