From: Steven Scholz <steven.scholz@imc-berlin.de>
To: linuxppc-embedded@lists.linuxppc.org
Subject: Re: uncached user space mapping with mmap() ???
Date: Fri, 05 Mar 2004 12:41:55 +0100 [thread overview]
Message-ID: <40486783.7010703@imc-berlin.de> (raw)
In-Reply-To: <40486600.9090304@jonmasters.org>
Jon Masters wrote:
> | Is it always better to map only the small part I am going to use?
>
> Of course it is always best to map only the small range that you are
> going to use and there will not necessarily be only one TLB mapping (I
> am here referring to your comments on ARM Linux Kernel List) etc. etc.
> However here especially I am inclined to repeat what they said on the
> other list - these figures are so close that they might differ for other
> reasons and so on. Did you repeat this in a controlled way many times?
Yes. The thruput is calculated after repeating the loop 1000 times
(Retries = 1000).
> You will need to answer the questions Russell King posted in order for
> us to work through this and figure out where the difference lies.
I am just about to do it.
--
Steven Scholz
imc Measurement & Control imc Meßsysteme GmbH
Voltastr. 5 Voltastr. 5
13355 Berlin 13355 Berlin
Germany Deutschland
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2004-03-05 11:41 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-04 13:51 uncached user space mapping with mmap() ??? Steven Scholz
2004-03-04 17:00 ` Dan Malek
2004-03-05 8:18 ` Steven Scholz
2004-03-05 11:35 ` Jon Masters
2004-03-05 11:41 ` Steven Scholz [this message]
2004-03-05 13:21 ` Jon Masters
-- strict thread matches above, loose matches on Subject: below --
2004-03-04 14:15 Fillod Stephane
2004-03-04 14:35 ` Steven Scholz
2004-03-04 17:28 ` Eugene Surovegin
2004-03-04 14:47 Fillod Stephane
2004-03-04 14:51 ` Steven Scholz
2004-03-04 23:02 Richard Williams
2004-03-04 23:17 ` Dan Malek
2004-03-08 10:25 Fillod Stephane
2004-03-09 10:55 ` Jon Masters
2004-03-09 12:49 Fillod Stephane
2004-03-12 12:07 ` Jon Masters
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