From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from westrelay02.boulder.ibm.com (westrelay02.boulder.ibm.com [9.17.195.11]) by e34.co.us.ibm.com (8.12.10/8.12.9) with ESMTP id j6QKb9RX195402 for ; Tue, 26 Jul 2005 16:37:09 -0400 Received: from d03av02.boulder.ibm.com (d03av02.boulder.ibm.com [9.17.195.168]) by westrelay02.boulder.ibm.com (8.12.10/NCO/VERS6.7) with ESMTP id j6QKb89v382168 for ; Tue, 26 Jul 2005 14:37:08 -0600 Received: from d03av02.boulder.ibm.com (loopback [127.0.0.1]) by d03av02.boulder.ibm.com (8.12.11/8.13.3) with ESMTP id j6QKb8OV005163 for ; Tue, 26 Jul 2005 14:37:08 -0600 Subject: Re: Memory pressure handling with iSCSI From: Badari Pulavarty In-Reply-To: <20050726121250.0ba7d744.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> <20050726121250.0ba7d744.akpm@osdl.org> Content-Type: text/plain Date: Tue, 26 Jul 2005 13:36:56 -0700 Message-Id: <1122410216.6433.41.camel@dyn9047017102.beaverton.ibm.com> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: lkml , linux-mm List-ID: On Tue, 2005-07-26 at 12:12 -0700, Andrew Morton wrote: > 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.) I will try ext2 next. - Badari -- 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