Nikita Danilov wrote:
Probably I am missing something, but I don't see how that can help. For example, suppose (for simplicity) that we have swappiness of 100%, and that fraction of referenced anon pages gets slightly less than of file pages. get_scan_ratio() increases anon_percent, and shrink_zone() starts scanning anon queue more aggressively. As a result, pages spend less time there, and have less chance of ever being accessed, reducing fraction of referenced anon pages further, and triggering further increase in the amount of scanning, etc. Doesn't this introduce positive feed-back loop?
It's a possibility, but I don't think it will be much of an issue in practice. If it is, we can always use refaults as a correcting mechanism - which would have the added benefit of being able to do streaming IO without putting any pressure on the active list, essentially clock-pro replacement with just some tweaks to shrink_list()... -- Politics is the struggle between those who want to make their country the best in the world, and those who believe it already is. Each group calls the other unpatriotic. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
