From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759303AbbIVX0B (ORCPT ); Tue, 22 Sep 2015 19:26:01 -0400 Received: from mga14.intel.com ([192.55.52.115]:20071 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752086AbbIVX0A (ORCPT ); Tue, 22 Sep 2015 19:26:00 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,575,1437462000"; d="scan'208";a="810783482" From: Andi Kleen To: tytso@mit.edu Cc: linux-kernel@vger.kernel.org, kirill.shutemov@linux.intel.com, herbert@gondor.apana.org.au Subject: Re: [PATCH 1/3] Make /dev/urandom scalable References: <1442963767-14945-1-git-send-email-andi@firstfloor.org> Date: Tue, 22 Sep 2015 16:25:59 -0700 In-Reply-To: <1442963767-14945-1-git-send-email-andi@firstfloor.org> (Andi Kleen's message of "Tue, 22 Sep 2015 16:16:05 -0700") Message-ID: <87pp1a3uk8.fsf@tassilo.jf.intel.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Andi Kleen writes: > > With the patchkit applied: > > 1 node: 1x > 2 nodes: 2x > 3 nodes: 3.4x > 4 nodes: 6x Sorry there was a typo in the numbers. Correct results are: With the patchkit applied: 1 node: 1x 2 nodes: 2x 3 nodes: 2.4x 4 nodes: 3x So it's not quite linear scalability, but 3x maximum throughput is already a lot better. -- ak@linux.intel.com -- Speaking for myself only