From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:41610) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RNkQ9-0006so-0x for qemu-devel@nongnu.org; Tue, 08 Nov 2011 07:04:54 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RNkQ7-0008RU-J9 for qemu-devel@nongnu.org; Tue, 08 Nov 2011 07:04:52 -0500 Received: from csmailer.cs.nctu.edu.tw ([140.113.235.130]:19301) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RNkQ7-0008Qz-0K for qemu-devel@nongnu.org; Tue, 08 Nov 2011 07:04:51 -0500 Date: Tue, 8 Nov 2011 20:04:44 +0800 From: =?utf-8?B?6Zmz6Z+L5Lu7?= Message-ID: <20111108120443.GA76806@cs.nctu.edu.tw> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] multiprocessor on kvm List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Xin Tong Cc: qemu-devel > I am wondering that when one uses qemu with kvm. How many cores are > exposed and available to the guest os ( assuming the host has 4 cores > ). is this configurable ? QEMU provides "-smp" option, but those virtual cpus are scheduled in round-robin fashion. In other words, it's not real parallelism. I don't know if there is any difference with kvm enabled. Regards, chenwj --=20 Wei-Ren Chen (=E9=99=B3=E9=9F=8B=E4=BB=BB) Computer Systems Lab, Institute of Information Science, Academia Sinica, Taiwan (R.O.C.) Tel:886-2-2788-3799 #1667