From owner-freebsd-current Tue Jul 18 1:20:53 2000 Delivered-To: freebsd-current@freebsd.org Received: from gidora.zeta.org.au (gidora.zeta.org.au [203.26.10.25]) by hub.freebsd.org (Postfix) with SMTP id 993F737B8A1 for ; Tue, 18 Jul 2000 01:20:49 -0700 (PDT) (envelope-from bde@zeta.org.au) Received: (qmail 767 invoked from network); 18 Jul 2000 08:20:46 -0000 Received: from unknown (HELO bde.zeta.org.au) (203.2.228.102) by gidora.zeta.org.au with SMTP; 18 Jul 2000 08:20:46 -0000 Date: Tue, 18 Jul 2000 18:20:40 +1000 (EST) From: Bruce Evans X-Sender: bde@besplex.bde.org To: Kris Kennaway Cc: Mark Murray , Bill Fumerola , current@FreeBSD.ORG Subject: Re: randomdev entropy gathering is really weak In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sun, 16 Jul 2000, Kris Kennaway wrote: > On the other hand, doing a dd if=/dev/random of=/dev/null gives me > infinite "randomness" at 10MB/sec - have the semantics of /dev/random > changed? Yes. /dev/random is now just an alias for /dev/urandom (or vice versa). You must have a fast machine to get 10MB/sec. I see the following speeds (using a better reading program than dd; dd gives up on EOF on the old /dev/random): old /dev/random on P5/133 5K/sec old /dev/urandom on P5/133 244K/sec old /dev/random on Celeron 366 overclocked to 5.5*95 25K/sec old /dev/urandom on Celeron 366 overclocked to 5.5*95 970K/sec new /dev/*random on Celeron 400 overclocked to 6.0*75 270K/sec Bruce To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message