Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754964AbcDYR0A (ORCPT ); Mon, 25 Apr 2016 13:26:00 -0400 Received: from mail.eperm.de ([89.247.134.16]:53582 "EHLO mail.eperm.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754333AbcDYRZ7 (ORCPT ); Mon, 25 Apr 2016 13:25:59 -0400 From: Stephan Mueller To: Andi Kleen Cc: Sandy Harris , LKML , linux-crypto@vger.kernel.org, "Theodore Ts'o" , Jason Cooper , John Denker , "H. Peter Anvin" Subject: Re: random(4) changes Date: Mon, 25 Apr 2016 19:25:55 +0200 Message-ID: <31776489.IE3eGLxohC@positron.chronox.de> User-Agent: KMail/4.14.10 (Linux/4.4.7-300.fc23.x86_64; KDE/4.14.18; x86_64; ; ) In-Reply-To: <87twipn05w.fsf@tassilo.jf.intel.com> References: <87twipn05w.fsf@tassilo.jf.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 616 Lines: 24 Am Montag, 25. April 2016, 09:06:03 schrieb Andi Kleen: Hi Andi, > Sandy Harris writes: > > There is also the third problem of horrible scalability of /dev/random > output on larger systems, for which patches are getting ignored. > > https://lkml.org/lkml/2016/2/10/716 > > Ignoring problems does not make them go away. I have seen your patches, but I am not fully sure I understand the root cause. is the noise source handling the issue or the random number generation the issue? If it is the latter, can you explain where the scalability issue comes in? > > -Andi Ciao Stephan