From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 25 Sep 2000 00:36:50 +0200 From: bert hubert Subject: [patch] vmfixes-2.4.0-test9-B2 - fixing deadlocks Message-ID: <20000925003650.A20748@home.ds9a.nl> References: <20000924231240.D5571@athlon.random> <20000924224303.C2615@redhat.com> <20000925001342.I5571@athlon.random> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20000925001342.I5571@athlon.random>; from andrea@suse.de on Mon, Sep 25, 2000 at 12:13:42AM +0200 Sender: owner-linux-mm@kvack.org Return-Path: To: Andrea Arcangeli Cc: "Stephen C. Tweedie" , Ingo Molnar , Linus Torvalds , Rik van Riel , Roger Larsson , MM mailing list , linux-kernel@vger.kernel.org List-ID: On Mon, Sep 25, 2000 at 12:13:42AM +0200, Andrea Arcangeli wrote: > On Sun, Sep 24, 2000 at 10:43:03PM +0100, Stephen C. Tweedie wrote: > > any form of serialisation on the quota file). This feels like rather > > a lot of new and interesting deadlocks to be introducing so late in > > 2.4. :-) True. But they also appear to be found and solved at an impressive rate. These deadlocks are fatal and don't hide in corners, whereas the previous mm problems used to be very hard to spot and fix, there not being real showstoppers, except for abysmal performance. [1] Since Rik's stuff was merged, the number of eyeball hours devoted to MM have skyrocketed, whereas the previous incarnations had far smaller audiences. The patches are barely a week in, and look how much has been improved that hadn't been found by the people working with Rik. It's tempting to revert the merge, but let's work at it a bit longer. There are problems, but we are solving them rapidly and both performance and design of the new MM are pretty pleasing. Let's not waste this opportunity. Regards, bert hubert [1] bad performance is not often attributed to the Linux kernel - people just assume that their problem is hard, because they don't have experience with other unixes that might outperform us. We may be running Solaris and other unices for reference, but your average user isn't. -- PowerDNS Versatile DNS Services Trilab The Technology People 'SYN! .. SYN|ACK! .. ACK!' - the mating call of the internet -- 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/