From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:52630) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XuJc3-00017p-2U for qemu-devel@nongnu.org; Fri, 28 Nov 2014 06:21:32 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1XuJbu-0005gB-0v for qemu-devel@nongnu.org; Fri, 28 Nov 2014 06:21:23 -0500 Received: from mx-v6.kamp.de ([2a02:248:0:51::16]:39856 helo=mx01.kamp.de) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XuJbt-0005fn-MQ for qemu-devel@nongnu.org; Fri, 28 Nov 2014 06:21:13 -0500 Message-ID: <54785AA5.9070409@kamp.de> Date: Fri, 28 Nov 2014 12:21:09 +0100 From: Peter Lieven MIME-Version: 1.0 References: <1417084026-12307-1-git-send-email-pl@kamp.de> <1417084026-12307-4-git-send-email-pl@kamp.de> <547753F7.2030709@redhat.com> <54782EC3.10005@kamp.de> <54784E55.6060405@redhat.com> <54785067.60905@kamp.de> <547858FF.5070602@redhat.com> In-Reply-To: <547858FF.5070602@redhat.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Subject: Re: [Qemu-devel] [RFC PATCH 3/3] qemu-coroutine: use a ring per thread for the pool List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Paolo Bonzini , ming.lei@canonical.com, Kevin Wolf , Stefan Hajnoczi , "qemu-devel@nongnu.org" , Markus Armbruster Am 28.11.2014 um 12:14 schrieb Paolo Bonzini: >> master: >> Run operation 40000000 iterations 12.851414 s, 3112K operations/s, 321ns per coroutine >> >> paolo: >> Run operation 40000000 iterations 11.951720 s, 3346K operations/s, 298ns per coroutine > Nice. :) > > Can you please try "coroutine: Use __thread … " together, too? I still > see 11% time spent in pthread_getspecific, and I get ~10% more indeed if > I apply it here (my times are 191/160/145). indeed: Run operation 40000000 iterations 10.138684 s, 3945K operations/s, 253ns per coroutine