On Sun, Feb 28, 2010 at 2:03 PM, Sad Clouds
<[email protected]> wrote:
> Hi, I've read some reports that calling mmap() on SMP systems can be
> slow. Solaris has quite a few memory allocators, which makes a bit hard
> to figure out the best memory allocation technique on SMP hardware.
>
> I have single threaded application, which allocates large chunks of
> memory (256K at a time) for caching data. This allocated memory can
> grow to several gigabytes in size. What do you think will give better
> performance on large SMP systems, calling mmap() or one of Solaris'
> general memory allocators?
You may want to experiment with libumem(3LIB) to see what performance
you'll get. The good thing is that you shouldn't even recompile your
application - just use LD_PRELOAD to do all the allocation through
libumem
--
Regards,
Cyril
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