From owner-freebsd-security Tue Apr 21 07:04:45 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id HAA12134 for freebsd-security-outgoing; Tue, 21 Apr 1998 07:04:45 -0700 (PDT) (envelope-from owner-freebsd-security@FreeBSD.ORG) Received: from spinner.netplex.com.au (spinner.netplex.com.au [202.12.86.3]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id OAA12120 for ; Tue, 21 Apr 1998 14:04:27 GMT (envelope-from peter@netplex.com.au) Received: from spinner.netplex.com.au (localhost [127.0.0.1]) by spinner.netplex.com.au (8.8.8/8.8.8/Spinner) with ESMTP id WAA21028; Tue, 21 Apr 1998 22:02:15 +0800 (WST) (envelope-from peter@spinner.netplex.com.au) Message-Id: <199804211402.WAA21028@spinner.netplex.com.au> X-Mailer: exmh version 2.0.2 2/24/98 To: Mike Smith cc: Ollivier Robert , freebsd-security@FreeBSD.ORG Subject: Re: Using MD5 insted of DES for passwd ecnryption In-reply-to: Your message of "Tue, 21 Apr 1998 05:59:33 MST." <199804211259.FAA00330@antipodes.cdrom.com> Date: Tue, 21 Apr 1998 22:02:14 +0800 From: Peter Wemm Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk Mike Smith wrote: > > According to Peter Wemm: > > > However, the thought of having ld.so on / and a dynamic sh and init seems > > > to make some people break out into a cold sweat... [..] > It would be useful, however, to quantify "way slower", so that we can > make personally objective decisions about that... Bruce Evans (bless his Retro soul :-) has some recent experience with this. He was running with SHLIBDIR=/lib for some time with a fully dynamic system. He's since switched to the complete opposite, *everything* static, including /usr/bin and the works. He recently got a few percent (5%? 8%?) of a speedup in the 'make world' stakes by making the /usr/obj/tmp/usr/bin stuff static and skipping a the build stages of some of the larger shared libs until later. (the speedup was due to less overall compiling being done as well as a reduction in exec startup and PIC relocation overheads). There is no doubt that going overboard with excessive dynamic linking and breaking up of libc can really hurt performance. Cheers, -Peter To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe security" in the body of the message