From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 26 Jul 2005 12:12:50 -0700 From: Andrew Morton Subject: Re: Memory pressure handling with iSCSI Message-Id: <20050726121250.0ba7d744.akpm@osdl.org> In-Reply-To: <20050726114824.136d3dad.akpm@osdl.org> References: <1122399331.6433.29.camel@dyn9047017102.beaverton.ibm.com> <20050726111110.6b9db241.akpm@osdl.org> <1122403152.6433.39.camel@dyn9047017102.beaverton.ibm.com> <20050726114824.136d3dad.akpm@osdl.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: pbadari@us.ibm.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: Andrew Morton wrote: > > Can you please reduce the number of filesystems, see if that reduces the > dirty levels? Also, it's conceivable that ext3 is implicated here, so it might be saner to perform initial investigation on ext2. (when kjournald writes back a page via its buffers, the page remains "dirty" as far as the VFS is concerned. Later, someone tries to do a writepage() on it and we'll discover the buffers' cleanness and the page will be cleaned without any I/O being performed. All the throttling _should_ work OK in this case. But ext2 is more straightforward.) -- 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: email@kvack.org