From owner-cvs-all@FreeBSD.ORG Mon Oct 18 21:05:57 2004 Return-Path: Delivered-To: cvs-all@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2CC7916A4CE; Mon, 18 Oct 2004 21:05:57 +0000 (GMT) Received: from fledge.watson.org (fledge.watson.org [204.156.12.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id C2A3543D3F; Mon, 18 Oct 2004 21:05:56 +0000 (GMT) (envelope-from robert@fledge.watson.org) Received: from fledge.watson.org (localhost [127.0.0.1]) by fledge.watson.org (8.13.1/8.13.1) with ESMTP id i9IL5n5M055762; Mon, 18 Oct 2004 17:05:49 -0400 (EDT) (envelope-from robert@fledge.watson.org) Received: from localhost (robert@localhost)i9IL5nAh055759; Mon, 18 Oct 2004 17:05:49 -0400 (EDT) (envelope-from robert@fledge.watson.org) Date: Mon, 18 Oct 2004 17:05:49 -0400 (EDT) From: Robert Watson X-Sender: robert@fledge.watson.org To: Mark Murray In-Reply-To: <200410182050.i9IKoY1x069132@grovel.grondar.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: cvs-src@FreeBSD.ORG cc: src-committers@FreeBSD.ORG cc: mark@grovel.grondar.org cc: cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/dev/random harvest.c X-BeenThere: cvs-all@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the entire tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 18 Oct 2004 21:05:57 -0000 On Mon, 18 Oct 2004, Mark Murray wrote: > > Log: > > Annotate that get_cyclecount() can be expensive on some platforms, > > which juxtaposes nicely with the comment just above on how the > > harvest function must be cheap. > > Cool. > > And I have a PHK-inspired improvement to the get_cyclecount() function > that should improve the !TSC case quite a bit. > > Commit in a day or three. Wonderful. I figured, since I wasn't making any progress currently on entropy-related stuff, that I should document the issue. If you have fixes in the pipeline, that sounds good to me. BTW, maybe we should make this dinner and conversation at the Thai Pub (a good concept) a bi-weekly thing for FreeBSD developers? :-) Robert N M Watson FreeBSD Core Team, TrustedBSD Projects robert@fledge.watson.org Principal Research Scientist, McAfee Research