Snort mailing list archives
Re: 2.1.3rc1 Performance
From: Dirk Geschke <Dirk_Geschke () genua de>
Date: Wed, 19 May 2004 17:11:50 +0200
Hi Gary,
The rules were the same, i just changed the link to the snort binary, so that's not it.
that's good.
Did pcre get rewritten, because it's been supported for a while now???
I am not sure, but I fear it is a performance penalty to use regular expressions to match against a network packet.
As for the libpcap question, i'll try to find out, because someone else compiled the 2.1.1 binary on a different machine. But the 2.1.3rc1 that I compiled, libpcap is the most recent version 0.8.3. In fact, i can almost quarantee that it was a different version since 0.8.3 was released on March 30 and I've had the 2.1.1 binary since before then. But shouldn't the newer version of libpcap be faster and more efficient?
Yes and no. But sometimes newer releases introduces newer bugs/problems. (So maybe this counts for snort too.) It also depends on your operating system. If you use linux then you should use the ring buffere libpcap version of Phil Wood at http://public.lanl.gov/cpw/ With older libpcap versions on linux I have seen some strange interpretation of statistics and especially the RedHat version used a complete different kind how statistics are counted. Maybe you should recompile the old snort version with the actual libpcap and try this version again to have a "real" comparison? Best regards Dirk ------------------------------------------------------- This SF.Net email is sponsored by: SourceForge.net Broadband Sign-up now for SourceForge Broadband and get the fastest 6.0/768 connection for only $19.95/mo for the first 3 months! http://ads.osdn.com/?ad_id=2562&alloc_id=6184&op=click _______________________________________________ Snort-users mailing list Snort-users () lists sourceforge net Go to this URL to change user options or unsubscribe: https://lists.sourceforge.net/lists/listinfo/snort-users Snort-users list archive: http://www.geocrawler.com/redir-sf.php3?list=snort-users
Current thread:
- 2.1.3rc1 Performance Gary_Portnoy (May 18)
- Re: 2.1.3rc1 Performance Dirk Geschke (May 19)
- <Possible follow-ups>
- Re: 2.1.3rc1 Performance Gary_Portnoy (May 19)
- Re: 2.1.3rc1 Performance Dirk Geschke (May 19)
- Re: 2.1.3rc1 Performance Gary_Portnoy (May 19)
- RE: 2.1.3rc1 Performance Kreimendahl, Chad J (May 19)
- RE: 2.1.3rc1 Performance Gary_Portnoy (May 19)
- RE: 2.1.3rc1 Performance Kreimendahl, Chad J (May 19)
- SnortCenter-Acid-SuSE byte_test issue Mike Feetham (May 19)
- Re: SnortCenter-Acid-SuSE byte_test issue AJ Butcher, Information Systems and Computing (May 20)
- SnortCenter-Acid-SuSE byte_test issue Mike Feetham (May 19)
- RE: 2.1.3rc1 Performance Gary_Portnoy (May 19)
- RE: 2.1.3rc1 Performance Dirk Geschke (May 19)
- RE: 2.1.3rc1 Performance Gary_Portnoy (May 19)
- RE: 2.1.3rc1 Performance Darren Webb (May 19)
(Thread continues...)