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List:       snort-devel
Subject:    RE: [Snort-devel] Hyperthreading
From:       "Esler, Joel - Contractor" <joel.esler () rcert-s ! army ! mil>
Date:       2004-09-29 20:44:49
Message-ID: 41C902FBC7F1EA47933D76631B1704EE29CAF9 () rcertsexch ! rcert-s ! army ! mil
[Download RAW message or body]

I have a machine that has dual processors and hyperthreading on both..  (cpu0-3)

It certainly benefits from the hyperthreading.  While it's nearly impossible to \
separate Snort performance from the rest of the processes on this machine, it's \
certainly benefitting.

J

-----Original Message-----
From: snort-devel-admin@lists.sourceforge.net \
                [mailto:snort-devel-admin@lists.sourceforge.net] On Behalf Of Jose \
                Maria Lopez
Sent: Wednesday, September 29, 2004 4:10 PM
To: snort-devel mailinglist
Subject: Re: [Snort-devel] Hyperthreading


El mié, 29 de 09 de 2004 a las 09:32, Martin Olsson escribió:
> Nowdays new servers are shipped with Hyperthreading CPUs.
> 
> Does Snort benefit from CPUs with Hyperthreading support? Should I 
> configure the system (FreeBSD 4.x) or compile Snort in some special 
> manner in order to get the most out of the machine and snort?
> 
> /Elof

Snort surely benefits from having hyperthreading, it's like having two CPUs. I don't \
know how you activate this feature in FreeBSD, in Linux you just activate \
multiprocessing in the kernel and the kernel sees the hyperthreading feature as two \
CPUs. The result it's not as good as having two real CPUs but it's better than not \
using it. Have in mind that snort benefits also of having a huge amount of RAM.

-- 
Jose Maria Lopez Hernandez
Director Tecnico de bgSEC
jkerouac@bgsec.com
bgSEC Seguridad y Consultoria de Sistemas Informaticos http://www.bgsec.com ESPAÑA

The only people for me are the mad ones -- the ones who are mad to live, mad to talk, \
mad to be saved, desirous of everything at the same time, the ones who never yawn or \
                say a commonplace thing, but burn, burn, burn like fabulous yellow \
                Roman candles.
                -- Jack Kerouac, "On the Road"



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