From mboxrd@z Thu Jan 1 00:00:00 1970 From: bugzilla-daemon@bugzilla.kernel.org Subject: [Bug 65081] Starting a second guest with -smp 2 makes the first guest very slow and the second one hang (or also very slow) Date: Mon, 21 Apr 2014 17:06:11 +0000 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit To: kvm@vger.kernel.org Return-path: Received: from mail.kernel.org ([198.145.19.201]:35355 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751378AbaDURGP (ORCPT ); Mon, 21 Apr 2014 13:06:15 -0400 Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id DB74620221 for ; Mon, 21 Apr 2014 17:06:13 +0000 (UTC) Received: from bugzilla1.web.kernel.org (bugzilla1.web.kernel.org [172.20.200.51]) by mail.kernel.org (Postfix) with ESMTP id A0BC220265 for ; Mon, 21 Apr 2014 17:06:11 +0000 (UTC) In-Reply-To: Sender: kvm-owner@vger.kernel.org List-ID: https://bugzilla.kernel.org/show_bug.cgi?id=65081 --- Comment #3 from Daniel Haid --- I removed all unnecessary arguments. The following command line is actually sufficient to produce hanging guests: qemu-system-x86_64 -enable-kvm -kernel vmlinuz-linux -initrd initramfs-linux.img -append "console=ttyS0,57600" -nographic -smp 2 I tried to run multiple guests and found out the following: It is possible to run multiple non-smp-guests (I tried three) and one smp-guest fine. But as soon as a second smp-guest is started, both smp-guests hang. However, the non-smp-guests are not affected! -- You are receiving this mail because: You are watching the assignee of the bug.