Snort mailing list archives

Re: OS Memory usage: 32bits vs. 64bits


From: Steven Sturges <steve.sturges () sourcefire com>
Date: Thu, 22 Apr 2010 19:27:04 -0400

Pointers in C are 8 bytes instead of 4 bytes on 64bit platforms.
That would account for a good chunk, as they're used not only
for memory allocation, but function pointers, offsets, etc.

Don't know that it would be around twice, though...

Cheers
-steve

Jonathan Saint-Léger wrote:
I am currently doing some tests with snort and I found out that snort
running on a 64bits OS seems to use on average TWICE the memory it uses on
the OS’s 32bits version (I’m using Ubuntu Karmic Koala).

I did my tests with and without host attribute tables, and with different
search-methods: lowmem, ac,…

Do somebody get the same results? I have trouble explaining it, any idea?

Regards



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