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Being cache conscious - How is data read from memory...

Author Message
William Ahern...
Posted: Wed Aug 26, 2009 7:59 pm
Guest
Sune <sune_ahlgren at (no spam) hotmail.com> wrote:
Quote:
Hi,

this question is a bit of an odd ball I'm afraid. What I need to know
to be cache conscious when implementing a hash table is how an OS
Linux/UNIX reads data from RAM into a cache line.

Other than the technical bits discussed elsethread, you need a tool to help
you verify your assumptions and hypotheses:

http://valgrind.org/info/tools.html#cachegrind

Of course, such feedback will not be determinative regarding production
runs.
 
Sune...
Posted: Fri Aug 28, 2009 10:01 am
Guest
On 27 Aug, 03:59, William Ahern <will... at (no spam) wilbur.25thandClement.com>
wrote:
Quote:
Sune <sune_ahlg... at (no spam) hotmail.com> wrote:
Hi,

this question is a bit of an odd ball I'm afraid. What I need to know
to be cache conscious when implementing a hash table is how an OS
Linux/UNIX reads data from RAM into a cache line.

Other than the technical bits discussed elsethread, you need a tool to help
you verify your assumptions and hypotheses:

       http://valgrind.org/info/tools.html#cachegrind

Of course, such feedback will not be determinative regarding production
runs.

Many people have taken their time to answer my questions and I really
appreciate everybody's viewpoints. Thanks go out to everyone!

/Sune
 
 
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