From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ed Tomlinson Subject: Re: pre2 swap_out() changes Date: Sun, 14 Jan 2001 10:51:29 -0500 Content-Type: text/plain; charset="US-ASCII" References: In-Reply-To: MIME-Version: 1.0 Message-Id: <01011410512900.02185@oscar> Content-Transfer-Encoding: 8bit Sender: owner-linux-mm@kvack.org Return-Path: To: Marcelo Tosatti Cc: linux-mm@kvack.org List-ID: Hi, A couple of observations on the pre2/pre3 vm. It seems to start swapping out very quicky but this does not seem to hurt. Once there is memory preasure and swapin starts cpu utilization drops thru the roof - kernel compiles are only able to drive the system at 10-20% (UP instead of 95-100%). Once the system stops swapping (in) there are some side effects. Closing windows in X becomes jerky (ie you see blocks get cleared and refreshed). If little or no swapping has occured X is much faster. With the patch marcelo posted last night things change. Now It can use cpu when swapping. It does seem to start swaping (in and out) faster but the system remains more interactive than above. I still see the X effect though. Over all I think 2.4.0+marcelo's first patch(es) was fastest. Ed Tomlinson -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/