From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from user-112077u.dsl.mindspring.com ([66.32.28.254] helo=dublin) by blount.mail.mindspring.net with esmtp (Exim 3.33 #1) id 16tFNH-0003g2-00 for linux-mm@kvack.org; Thu, 04 Apr 2002 17:06:31 -0500 Message-Id: <4.2.0.58.20020404140237.00b6c390@london.rubylane.com> Date: Thu, 04 Apr 2002 14:06:20 -0800 From: Jim Wilcoxson Subject: 2.2.20 suspends everything then recovers during heavy I/O Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm@kvack.org List-ID: I'm setting up a new system with 2.2.20, Ingo's raid patches, plus Hedrick's IDE patches. When doing heavy I/O, like copying partitions between drives using tar in a pipeline, I've noticed that things will just stop for long periods of time, presumably while buffers are written out to the destination disk. The destination drive light is on and the system is not exactly hung, because I can switch consoles and stuff, but a running vmstat totally suspends for 10-15 seconds. Any tips or patches that will avoid this? If our server hangs for 15 seconds, we're going to have tons of web requests piled up for it when it decides to wakeup... Thanks for any advice you may have. (I'm not on the mailing list BTW). Jim ___________________________________________ Jim Wilcoxson, Owner Ruby Lane Antiques, Collectibles & Fine Art 1.313.274.0788 http://www.rubylane.com -- 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/