From: Dave Jones <davej@redhat.com>
To: John Richard Moser <nigelenki@comcast.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Cache line size
Date: Sun, 10 Sep 2006 22:39:50 -0400 [thread overview]
Message-ID: <20060911023950.GF4743@redhat.com> (raw)
In-Reply-To: <4504AF26.9040807@comcast.net>
On Sun, Sep 10, 2006 at 08:34:46PM -0400, John Richard Moser wrote:
> Is there a way for the Linux Kernel to know the cache line size of the
> CPU it's on, besides #define X86_CACHE_LINE_SZ 32 or whatnot? I am
> looking in /proc/cpuinfo trying to determine how to run caching
> optimizations and interested in this information and its implications.
> It may also be useful if I can get this information at run time in
> application code.
You can use /dev/cpu/x/cpuid to read it directly from the CPU.
See the source of x86info for examples.
Dave
next prev parent reply other threads:[~2006-09-11 2:32 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-11 0:34 Cache line size John Richard Moser
2006-09-11 2:39 ` Dave Jones [this message]
-- strict thread matches above, loose matches on Subject: below --
2006-09-11 4:58 Chuck Ebbert
2006-09-11 5:31 ` Dave Jones
2006-09-11 12:41 Chuck Ebbert
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