From owner-freebsd-questions@FreeBSD.ORG Mon Feb 7 21:38:46 2011 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 709FD106566C for ; Mon, 7 Feb 2011 21:38:46 +0000 (UTC) (envelope-from cswiger@mac.com) Received: from asmtpout027.mac.com (asmtpout027.mac.com [17.148.16.102]) by mx1.freebsd.org (Postfix) with ESMTP id 56A3F8FC13 for ; Mon, 7 Feb 2011 21:38:46 +0000 (UTC) MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; CHARSET=US-ASCII Received: from cswiger1.apple.com ([17.209.4.71]) by asmtp027.mac.com (Oracle Communications Messaging Exchange Server 7u4-18.01 64bit (built Jul 15 2010)) with ESMTPSA id <0LG90057BO4LD340@asmtp027.mac.com> for freebsd-questions@freebsd.org; Mon, 07 Feb 2011 13:38:46 -0800 (PST) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.2.15,1.0.148,0.0.0000 definitions=2011-02-07_06:2011-02-07, 2011-02-07, 1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 ipscore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx engine=6.0.2-1012030000 definitions=main-1102070113 From: Chuck Swiger X-Priority: Medium In-reply-to: <12dfa77447c.7163284093726025667.-8541699583891767164@zoho.com> Date: Mon, 07 Feb 2011 13:38:45 -0800 Message-id: References: <12dfa77447c.7163284093726025667.-8541699583891767164@zoho.com> To: kellyremo X-Mailer: Apple Mail (2.1082) Cc: FreeBSD Subject: Re: "https is faster on amd64?" X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Feb 2011 21:38:46 -0000 On Feb 6, 2011, at 2:14 AM, kellyremo wrote: > http://devcentral.f5.com/weblogs/macvittie/archive/2011/01/31/dispelling-the-new-ssl-myth.aspx > > according to the "SSL Performance" table it says that the transactions per second is 2-3 times better using 64bit kernels opposite to 32bit kernels? > > is this true, or i am just misunderstanding something Sort of, although you're partially misunderstanding something. SSL cryptography, like most highly math-intensive workloads, can be performed more efficiently in 64-bit architectures than in 32-bit architectures. However, SSL is almost always done in userland processes and not in the kernel. You don't have to run a 64-bit kernel to run 64-bit userland apps (on some systems, anyway), much as 64-bit kernels support running 32-bit processes as well as running 64-bit userland processes. Regards, -- -Chuck