From: Jun Sun <jsun@mvista.com>
To: Dennis Castleman <DennisCastleman@oaktech.com>
Cc: linux-mips@linux-mips.org, jsun@mvista.com
Subject: Re: your mail
Date: Thu, 17 Apr 2003 11:17:10 -0700 [thread overview]
Message-ID: <20030417111710.F1642@mvista.com> (raw)
In-Reply-To: <56BEF0DBC8B9D611BFDB00508B5E2634102F10@TLEXMAIL>; from DennisCastleman@oaktech.com on Thu, Apr 17, 2003 at 10:53:57AM -0700
On Thu, Apr 17, 2003 at 10:53:57AM -0700, Dennis Castleman wrote:
> ALL
>
> Anybody know the performance differences I can expect using a MIPS 5K core
> @250 Mhz in 64bit mode versus 32bit mode?
>
It really depends on the applications. The biggest gain from 64bit,
other than the obviously bigger address space, is 64bit data
manipulation. A single 64bit instruction (add/sub/...) is carried
out by several instructions in 32bit.
If your apps are heavy on 64bit operations, then you gain.
Otherwise I suspect no performance gain or even possibly a little
worse performance due more stress on cache/memory subsystems.
I am sure others with more 64bit experience probably have more
to say. :)
Jun
next prev parent reply other threads:[~2003-04-17 18:17 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-04-17 17:53 Dennis Castleman
2003-04-17 18:17 ` Jun Sun [this message]
2003-04-17 20:15 ` your mail Greg Lindahl
2003-04-18 0:03 ` Ralf Baechle
-- strict thread matches above, loose matches on Subject: below --
2020-05-06 5:52 Jiaxun Yang
2020-05-07 11:00 ` your mail Thomas Bogendoerfer
2018-08-27 14:50 Christoph Hellwig
2018-08-31 20:23 ` your mail Paul Burton
2018-03-09 15:12 [PATCH 00/14] Enable SD/MMC on JZ4780 SoCs Ezequiel Garcia
2018-03-09 15:12 ` [PATCH 08/14] mmc: jz4740: Add support for the JZ4780 Ezequiel Garcia
2018-03-09 17:51 ` [PATCH 08/14] mmc: jz4740: Add support for the JZ4780, Paul Cercueil
2018-03-09 22:31 ` your mail James Hogan
2018-03-09 22:31 ` James Hogan
2008-01-22 0:00 (no subject) Thiemo Seufer
2008-01-28 17:51 ` your mail Ralf Baechle
2005-04-28 19:15 Bryan Althouse
2005-04-29 11:02 ` your mail Ralf Baechle
2003-04-18 0:08 Dennis Castleman
2003-03-29 6:54 Avinash S.
2003-03-29 7:25 ` your mail Thiemo Seufer
2002-10-26 19:48 Zajerko-McKee, Nick
2002-10-26 20:08 ` your mail Daniel Jacobowitz
2002-10-26 20:32 ` Greg Lindahl
2001-10-03 14:28 Marian Kafadarov
2001-10-03 15:52 ` your mail Martin Schulze
[not found] <5.0.0.25.0.20010404172906.00a4bce8@vmspop.isc.rit.edu>
2001-04-04 21:37 ` Matthew Fredrickson
2001-04-05 5:08 ` Ralf Baechle
2001-02-15 0:27 Deepa Suresh
2001-02-15 11:03 ` your mail Geert Uytterhoeven
2001-01-04 1:36 John Van Horne
2001-01-04 15:36 ` your mail Ralf Baechle
2001-01-04 16:22 ` Maciej W. Rozycki
2001-01-04 16:40 ` Joe deBlaquiere
2001-01-04 17:13 ` Ralf Baechle
2001-01-04 17:46 ` Joe deBlaquiere
2001-01-04 18:12 ` Maciej W. Rozycki
2001-01-04 17:18 ` Maciej W. Rozycki
1997-08-09 17:16 Vincent Renardias
1997-08-09 17:41 ` your mail Ralf Baechle
1997-08-09 17:41 ` Ralf Baechle
1997-08-09 19:40 ` Vincent Renardias
1997-08-09 19:42 ` Ralf Baechle
1997-08-09 19:42 ` Ralf Baechle
1997-08-09 21:05 ` Vincent Renardias
1997-08-09 21:11 ` Ralf Baechle
1997-08-09 21:11 ` Ralf Baechle
1997-08-10 2:57 ` Vincent Renardias
1997-08-09 22:53 ` Mike Shaver
1997-08-09 22:53 ` Mike Shaver
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