Date: Tue, 21 Apr 1998 22:02:14 +0800 From: Peter Wemm <peter@netplex.com.au> To: Mike Smith <mike@smith.net.au> Cc: Ollivier Robert <roberto@keltia.freenix.fr>, freebsd-security@FreeBSD.ORG Subject: Re: Using MD5 insted of DES for passwd ecnryption Message-ID: <199804211402.WAA21028@spinner.netplex.com.au> In-Reply-To: Your message of "Tue, 21 Apr 1998 05:59:33 MST." <199804211259.FAA00330@antipodes.cdrom.com>
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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
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