From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 14 May 2000 18:37:28 -0700 (PDT) From: Linus Torvalds Subject: Re: pre8: where has the anti-hog code gone? In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Arjan van de Ven Cc: linux-mm@kvack.org List-ID: On Sun, 14 May 2000, Arjan van de Ven wrote: > > > How does it feel performance-wise? > > This is a bit hard to say, as my testbox is headless. However, I started > Netscape on it (over a 100Mbit network) and did a "make -j2 bzImage" at > the same time. Netscape didn't seem to suffer, but there was usually about > 30 megabytes[1] ram free (according to "top"), so maybe it is to agressive > in freeing memory. No, it's probably not too aggressive in freeing up memory, it's just that a kernel make is a very "wellbehaved" benchmark MM-wise. Why? Because the kernel make will start up a lot of processes that are short-lived in comparison to the whole build (I bet this is the first time anybody called gcc "short-lived" - it's one slow compiler - but comparatiely it is). So the kernel make will actually keep noticeable amounts of memory free "on average", simply because of processes exiting.. Linus -- 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/