From owner-freebsd-hackers@FreeBSD.ORG Thu Oct 18 20:27:43 2007 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 398E116A469; Thu, 18 Oct 2007 20:27:43 +0000 (UTC) (envelope-from bsam@ipt.ru) Received: from mail.kuban.ru (mail.kuban.ru [62.183.66.246]) by mx1.freebsd.org (Postfix) with ESMTP id 96FCE13C4B6; Thu, 18 Oct 2007 20:27:42 +0000 (UTC) (envelope-from bsam@ipt.ru) Received: from localhost.my.domain ([85.172.12.98]) by mail.kuban.ru (8.9.1/8.9.1) with ESMTP id l9IJrKx1086473; Thu, 18 Oct 2007 23:53:33 +0400 (MSD) Received: (from bsam@localhost) by localhost.my.domain (8.14.1/8.14.1/Submit) id l9IJuQCr023936; Thu, 18 Oct 2007 23:56:26 +0400 (MSD) (envelope-from bsam@ipt.ru) X-Authentication-Warning: localhost.my.domain: bsam set sender to bsam@ipt.ru using -f References: <47137D36.1020305@chistydom.ru> <47140906.2020107@FreeBSD.org> <47146FB4.6040306@chistydom.ru> <47147E49.9020301@FreeBSD.org> <47149E6E.9000500@chistydom.ru> <4715035D.2090802@FreeBSD.org> <4715C297.1020905@chistydom.ru> <4715C5D7.7060806@FreeBSD.org> <47165A01.1030806@chistydom.ru> From: Boris Samorodov In-Reply-To: <47165A01.1030806@chistydom.ru> (Alexey Popov's message of "Wed\, 17 Oct 2007 22\:52\:49 +0400") User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1 (berkeley-unix) Date: Thu, 18 Oct 2007 23:56:26 +0400 Message-ID: <07289061@ipt.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailman-Approved-At: Thu, 18 Oct 2007 20:43:32 +0000 Cc: freebsd-hackers@freebsd.org, freebsd-stable@freebsd.org Subject: Re: amrd disk performance drop after running under high load X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 18 Oct 2007 20:27:43 -0000 Hi! Since nobody answered so far, here is my two cents. I'm not an expert here so it's only my imho. On Wed, 17 Oct 2007 22:52:49 +0400 Alexey Popov wrote: > interrupt total rate > irq6: fdc0 8 0 > irq14: ata0 47 0 > irq16: uhci0 1428187319 1851 ^^^^^^^^^^ ^^^^ [1] > irq18: uhci2 12374352 16 > irq23: ehci0 3 0 > irq46: amr0 11983237 15 > irq64: em0 1427141755 1850 ^^^^^^^^^^ ^^^^ [2] > cpu0: timer 1540896452 1997 > cpu1: timer 1542377798 1999 > Total 5962960971 7730 [1] and [2] looks suspicious to me (totals and rate are too close to each other and btw to timers). Let the latter (timers) alone. Do you use any USB device? Can you try to use other network card? That behaviour seems to be an interrupt storm and/or irq collision. WBR -- bsam