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Nmap Development: Re: [PATCH] Dramatically reduce # of fopen()s and fclose()s in nbase_rnd.c

Re: [PATCH] Dramatically reduce # of fopen()s and fclose()s in nbase_rnd.c

From: Fyodor <fyodor_at_insecure.org>
Date: Fri, 15 Dec 2006 16:34:10 -0800

On Fri, Dec 15, 2006 at 11:43:38AM -0600, Kris Katterjohn wrote:
> This simple patch dramatically reduces the number of fopen()s and
> fclose()s used when getting random numbers from nbase_rnd.c by keeping
> the rng device open.

It seems like a tough call, since keeping file descriptors open has
its own problems. Particularly since Nmap often uses so many
concurrently anywa. Have you measured how much time the 512 opens
take up? Do you see any performance difference from your patch?

Cheers,
-F

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