From owner-freebsd-stable Tue Dec 12 14:46:40 2000 From owner-freebsd-stable@FreeBSD.ORG Tue Dec 12 14:46:38 2000 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from earth.backplane.com (placeholder-dcat-1076843399.broadbandoffice.net [64.47.83.135]) by hub.freebsd.org (Postfix) with ESMTP id 0D79437B400 for ; Tue, 12 Dec 2000 14:46:38 -0800 (PST) Received: (from dillon@localhost) by earth.backplane.com (8.11.1/8.9.3) id eBCMkb953654; Tue, 12 Dec 2000 14:46:37 -0800 (PST) (envelope-from dillon) Date: Tue, 12 Dec 2000 14:46:37 -0800 (PST) From: Matt Dillon Message-Id: <200012122246.eBCMkb953654@earth.backplane.com> To: Kachun Lee , freebsd-stable@FreeBSD.ORG Subject: Re: Extreme high load with 12/7 4-releng References: <200012120230.SAA32402@pathlink.net> <200012121801.KAA42878@pathlink.net> <200012122138.NAA69074@pathlink.net> <200012122231.eBCMVE353411@earth.backplane.com> Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG ::Sorry to say, the system performance degraded with the high load. In ::telnet, it felt like a system with load of 40. With the 'working' FreeBSD, ::the servers would still performance better (load >10) with twice the ::connections. I still suspect that it was related to the server start to ::swap heavily even with 200+M of Inact memory? The strange part was the swap ::Used stayed relatively low (>20M), but, with top, the swap In and Out ::changed every refresh. :: ::Regards :: ::Best regards : : That is very odd. Very very odd. Do a 'systat -vm 1' and let it run : a while... observe the pagein and pageout statis in the upper right : for 'VN PAGER' and 'SWAP PAGER' and tell me what you see. : : -Matt I think I have an idea as to what might be wrong. I'm going to experiment a bit over the next few days to try to solve the problem. I think my low-memory patch might have blown the pageout algorithm. -Matt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message