Re: [PATCH 1/3] readahead: drop behind

[Eric St-Laurent]

On Sat, 2007-21-07 at 23:00 +0200, Peter Zijlstra wrote:
> plain text document attachment (readahead-useonce.patch)
> Use the read-ahead code to provide hints to page reclaim.
> 
> This patch has the potential to solve the streaming-IO trashes my
> desktop problem.
> 
> It tries to aggressively reclaim pages that were loaded in a strong
> sequential pattern and have been consumed. Thereby limiting the damage
> to the current resident set.
> 
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>

With the fadvise change, it looks like the right solution to me.

The patches are for which kernel? They doesn't apply cleanly to
2.6.22.1.

It would be useful to have a temporary /proc tunable to enable/disable
the heuristic to help test the effects.


- Eric


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/