Re: snort packet loss rate

[Matt Kettler <mkettler () evi-inc com>]

Jin Fang wrote:
> > What kind of NIC are you using?
>   HP NC7781 Gigabit adapter
> > If you fire up tcpdump, does it loose packets too, or just snort?
>   Yes. Half was received by filter and half was dropped by kernel.

Sounds like the problem is not snort-specific.

How much bandwidth is on that adapter? Is it really a gigabit connection, or is
it feeding a lower-speed line? Is the card on a PCI bus, or something faster
such as PCI-X or PCI-E?


It's fairly difficult for a pcap app to keep up with bursts of gigabit data.
Heck, it's even difficult for the plain PCI bus to keep up with gigabit for a
sustained period.





-------------------------------------------------------
Using Tomcat but need to do more? Need to support web services, security?
Get stuff done quickly with pre-integrated technology to make your job easier
Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo
http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642
_______________________________________________
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