From owner-freebsd-current@FreeBSD.ORG Wed Apr 21 15:21:00 2010 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 87018106566C; Wed, 21 Apr 2010 15:21:00 +0000 (UTC) (envelope-from a_best01@uni-muenster.de) Received: from zivm-relay3.uni-muenster.de (ZIVM-RELAY3.UNI-MUENSTER.DE [128.176.192.19]) by mx1.freebsd.org (Postfix) with ESMTP id B756D8FC08; Wed, 21 Apr 2010 15:20:59 +0000 (UTC) X-IronPort-AV: E=Sophos;i="4.52,250,1270418400"; d="scan'208";a="31855553" Received: from zivmaildisp1.uni-muenster.de (HELO ZIVMAILUSER03.UNI-MUENSTER.DE) ([128.176.188.85]) by zivm-relay3.uni-muenster.de with ESMTP; 21 Apr 2010 17:20:58 +0200 Received: by ZIVMAILUSER03.UNI-MUENSTER.DE (Postfix, from userid 149459) id 333271B0758; Wed, 21 Apr 2010 17:20:58 +0200 (CEST) Date: Wed, 21 Apr 2010 17:20:57 +0200 (CEST) From: Alexander Best Sender: Organization: Westfaelische Wilhelms-Universitaet Muenster To: Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: Roman Divacky Subject: Re: [CFT]: ClangBSD is selfhosting, we need testers now X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Wed, 21 Apr 2010 15:21:00 -0000 i might have stumbled upon a problem with clang. i've compiled a kernel from the clang branch using `make kernel INSTKERNNAME=clang` and booted from it. i'm now experiencing audio problems with mp3s and certain video files. playback is awfully slow and the audio output gets distorted massively. `top` however reports no high cpu load and `vmstat -i` doesn't report anything unusual either. this problem doesn't occur with a regular gcc-kernel. both kernels are running under a regular (gcc) world. i thought it might be a problem with acpi, but disabling acpi (hint.acpi.0.disabled=1) gives me a system freeze. -- Alexander Best