Date: Mon, 02 May 2005 17:11:02 -0400 From: Allen <bsdlists@rfnj.org> To: Sten Daniel =?iso-8859-1?Q?S=F8rsdal?= <lists@wm-access.no>, Mike Tancsa <mike@sentex.net> Cc: freebsd-performance@freebsd.org Subject: Re: 64bit CPUs Message-ID: <6.2.1.2.2.20050502170756.037186b0@mail.rfnj.org> In-Reply-To: <42763F28.7020502@wm-access.no> References: <6.2.1.2.0.20050501094429.06974910@64.7.153.2> <42763F28.7020502@wm-access.no>
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At 10:54 5/2/2005, Sten Daniel S=F8rsdal wrote: >Mike Tancsa wrote: > > A somewhat obvious question to some perhaps, but what server application > > mix on FreeBSD today sees an improvement using 64bit CPUs ? In my ISP > > centric world, my big apps are BIND, IMAP/POP3, httpd via apache, SMTP, > > AV and SPAM scanning, and firewalls/routing. Apart from larger RAM, why > > would these benefit from the 64bit world ? Or would they ? > >Any application that would benefit from being able to copy 64 bits at a >time, i assume. Video applications and perhaps some encryption >applications. Perhaps IPv6 core would have a slight benefit (although >probably not with current code). Almost all the applications that you >mention are doing mostly string operations (afaik). Perhaps VPN tunnels >could benefit (unless of course you use hardware vpns like we do). The real benefit for ISP servers comes in from the 64bit address space, not= =20 the 64bit registers, though they can help out occasionally in those=20 workloads as you mentioned. Having 1MB+ of L2 cache, and supporting 20+GB of memory are the real wins=20 in your case.
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