Snort mailing list archives
high packet loss - low throughput
From: Michal Purzynski <michal () rsbac org>
Date: Wed, 17 Jul 2013 22:04:37 +0200
Hello, I can see a strange results on a local snort installation. Either I don't understand something or the statistics aren't precise. Please help me understand. It's an (expanding) two hosts snort setup with 2 x E5-2620 0 @ 2.00GHz / 64GB RAM each. Intel x520 card. Traffic is around 1Gbit to each host. Around 3500 VRT only rules enabled. 8 snort instances load balanced by the pf_ring. The traffic loss is very high - up to 9% per instance (as reported by Sguil which in turn read the snort logs and debug files). A single instance gets from 90 - 150Mbits of traffic and from 10 - 20k pps. To make it worse, the loss is not dependent on the traffic and/or pps at all. Actualy, sometimes I get a 5% of loss on 50Mbits to a single instance. Again, the traffic loss numbers are from the snort stats. There's nothing fancy in the snort conf as well. Daq is configured as follows. config daq: pfring config daq_dir: /opt/pfring/lib/daq config daq_var: clusterid=51 config daq_var: clustermode=5 ------------------------------------------------------------------------------ See everything from the browser to the database with AppDynamics Get end-to-end visibility with application monitoring from AppDynamics Isolate bottlenecks and diagnose root cause in seconds. Start your free trial of AppDynamics Pro today! http://pubads.g.doubleclick.net/gampad/clk?id=48808831&iu=/4140/ostg.clktrk _______________________________________________ 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://sourceforge.net/mailarchive/forum.php?forum_name=snort-users Please visit http://blog.snort.org to stay current on all the latest Snort news!
Current thread:
- high packet loss - low throughput Michal Purzynski (Jul 17)
- Re: high packet loss - low throughput waldo kitty (Jul 17)
- Re: high packet loss - low throughput Michal Purzynski (Jul 17)
- Re: high packet loss - low throughput waldo kitty (Jul 17)
- Re: high packet loss - low throughput Michal Purzynski (Jul 18)
- Re: high packet loss - low throughput Michal Purzynski (Jul 19)
- Re: high packet loss - low throughput waldo kitty (Jul 19)
- Re: high packet loss - low throughput Michal Purzynski (Jul 19)
- Re: high packet loss - low throughput waldo kitty (Jul 19)
- Re: high packet loss - low throughput rmkml (Jul 19)
- Re: high packet loss - low throughput waldo kitty (Jul 19)
- Re: high packet loss - low throughput Michal Purzynski (Jul 17)
- Re: high packet loss - low throughput waldo kitty (Jul 17)