Re: throttling dirtiers

Rik van Riel
2002-07-31T21:55:11Z

On Wed, 31 Jul 2002, Andrew Morton wrote:

> > These ingredients are already in 2.4-rmap.
>
> It doesn't seem to work. The -ac kernel has weird stalls on
> storms of ext3 writeback.

Maybe you shouldn't have cut off the other line from my
2-line mail ;)))

The most probable reason for the stalls is the fact that
page_launder (like shrink_cache) will try to write out
the complete inactive list if it's almost full of dirty
pages, so the system will still be stuck in __get_request_wait
seconds after the first few megabytes of the paged out
inactive pages have been cleaned already.

cheers,

Rik
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