> I've seen pre7 now and I produced arca-vm-18 against it.
>
> In arca-vm-18 I avoided the swaping readahead if we would be forced to do
> _sync_ IO in the readahead. This make tons of sense to me.
Yes, I agree. I made a same change in my development patches, this
morning, and it works well. We can only gain with policy like that.
> Another thing that would be interesting could be to change
> SWAPFILE_CLUSTER to 256 as in clean pre7. I think it's not needed because
> I am not hearing disk seeks under heavy swapping but may I guess there is
> some reason is 256 in pre7 ;)?
>
Better clustering of pages on the disk. That will improve swapin
readahead hit rate, and overall performance.
Regards,
-- Zlatko- 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/