From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sat, 6 Nov 2004 15:51:41 -0500 (EST) From: Rik van Riel Subject: Re: removing mm->rss and mm->anon_rss from kernel? 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: Christoph Lameter Cc: "Martin J. Bligh" , Nick Piggin , Benjamin Herrenschmidt , Hugh Dickins , linux-mm@kvack.org, linux-ia64@vger.kernel.org List-ID: On Sat, 6 Nov 2004, Christoph Lameter wrote: > Doing a ps is not a frequent event. Of course this may cause > significant load if one does regularly access /proc entities then. Are > there any threads from the past with some numbers of what the impact was > when we calculated rss via proc? Running top(1) on stock 2.4 kernels pretty much kills large systems from SGI and IBM. Think about walking the VM for 10,000 processes, with 3GB virtual memory each, every 3 seconds. -- "Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it." - Brian W. Kernighan -- 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-mm.org/ . Don't email: aart@kvack.org