Snort mailing list archives
2.1.3rc1 Performance
From: Gary_Portnoy () itginc com
Date: Tue, 18 May 2004 16:20:06 -0400
Yesterday I replaced my 2.1.1RC1 build with 2.1.3RC1. Today I checked the perfmon stats and nearly fell off my chair. They are reporting that snort is dropping on average about 15% of traffic. With 2.1.1RC1 perfmon has always reported 0% pkts dropped and I believed it. Now I am seeing that there are times when snort is dropping as much as 89%, and that is at times with only 0.9mbps throughput and using 11% of the cpu. Some other times i am seeing drop rates of 12% with 5.1mbps throughput while using 77% of the cpu. Two questions: 1. Is there a bug with reporing stats in 2.1.3 or was there one in 2.1.1 where %pkts dropped simply wasn't reported? Or is snort 2.1.3rc1 just that much less efficient? 2. What is the most common bottleneck: the cpu or the nic? In other words, why would i be dropping 89% of the traffic while using only 11% of the CPU sometimes while at other times I am dropping much less with more cpu used? -Gary ------------------------------------------- Gary Portnoy -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- This message is for the named person's use only. This communication is for informational purposes only and has been obtained from sources believed to be reliable, but it is not necessarily complete and its accuracy cannot be guaranteed. It is not intended as an offer or solicitation for the purchase or sale of any financial instrument or as an official confirmation of any transaction. Moreover, this material should not be construed to contain any recommendation regarding, or opinion concerning, any security. It may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient. Any views expressed in this message are those of the individual sender, except where the message states otherwise and the sender is authorized to state them to be the views of any such entity. ITG Inc. reserves the right to monitor and archive all electronic communications through its network. ITG Inc. Member NASD, SIPC -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+- ------------------------------------------------------- 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)
(Thread continues...)