From owner-freebsd-current@FreeBSD.ORG Tue Nov 2 09:41:48 2004 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 1120F16A4CE; Tue, 2 Nov 2004 09:41:48 +0000 (GMT) Received: from a80-126-165-168.adsl.xs4all.nl (a80-126-165-168.adsl.xs4all.nl [80.126.165.168]) by mx1.FreeBSD.org (Postfix) with ESMTP id 140CD43D31; Tue, 2 Nov 2004 09:41:47 +0000 (GMT) (envelope-from devet@devet.org) Received: from adv.devet.org (adv.devet.org [192.168.1.2]) by a80-126-165-168.adsl.xs4all.nl (Postfix) with ESMTP id E9943D6ED; Tue, 2 Nov 2004 10:41:45 +0100 (CET) Received: by adv.devet.org (Postfix, from userid 100) id DBA3F16356; Tue, 2 Nov 2004 10:41:45 +0100 (CET) Date: Tue, 2 Nov 2004 10:41:45 +0100 From: Arjan de Vet To: current@freebsd.org Message-ID: <20041102094145.GA4698@adv.devet.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.6i cc: re@freebsd.org Subject: 5.3-RC2: kqueue descriptor leak in resolver functions? X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Nov 2004 09:41:48 -0000 I'm trying to track down a weird hang/panic in 5.3-RC* which seems to happen after 1-1.5 days on my desktop machine. The one time I saw the panic message it complained about kmem_map being full. This morning I noticed that the kernel memory used for kqueues was a bit larger than expected so I started to monitor it more closely. I soon found out what seems to be the problem: mozilla keeps lots of kqueue file descriptors open: > lsof | fgrep mozilla | fgrep KQUEUE | wc -l 1137 This number grows over time (I have mozilla running permanently with lots of tabs, most of which auto-refresh). Does anybody see something similar with mozilla on 5.3-RC*? A ktrace of the mozilla process seems to point to the DNS resolver code leaking kqueue descriptors (I could not find any kqueue() calls in the mozilla code itself). Arjan Cc: re -- Arjan de Vet, Eindhoven, The Netherlands URL : http://www.devet.org/ Work: http://www.madison-gurkha.com/ (Security, Open Source, Education)