> After number of async pages gets bigger than
> pager_daemon.swap_cluster (= SWAP_CLUSTER_MAX), swapin readahead
> becomes synchronous, and that hurts performance. It is better to
> skip readahead in such situations, and that is also more fair to
> swapout. Andrea came to exactly the same conclusion, independent
> of me (on the same day :)).
IIRC this facility was in the original swapin readahead
implementation. That only leaves the question who removed
it and why :))
cheers,
Rik -- If a Microsoft product fails, who do you sue?
+-------------------------------------------------------------------+
| Linux memory management tour guide. riel@humbolt.geo.uu.nl |
| Scouting Vries cubscout leader. http://humbolt.geo.uu.nl/~riel |
+-------------------------------------------------------------------+
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/