Snort mailing list archives
Re: high packet loss - low throughput
From: beenph <beenph () gmail com>
Date: Sun, 21 Jul 2013 11:18:23 -0400
On Sun, Jul 21, 2013 at 9:04 AM, Michal Purzynski <michal () rsbac org> wrote:
On 7/21/13 2:19 PM, beenph wrote:Disable hyperthreading.Old and wrong advice from a pre Nehalem era.
As far as i know its still currently very debatable to enable hyperthreading for system that require alot of context switching but i could be wrong :)
Balance your IRQ's so network irq are cpu bound.Done long time ago at restart, irqbalance removed from the system,
I was not refering to irqbalance process but i was rather refering to assing your network card queue's irq's to specific cpu core using smp_affinity. (/proc/irq/<IRQ ID>/smp_affinity)
bind each instance of snort to each cpu its listening network interface is bound.Very bad idea, packet loss around 60% with it.
Very bad idea if the above suggestion is not done, correctly, else its rather a good practice if you have multiple input and output queue. ------------------------------------------------------------------------------ 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:
- Re: high packet loss - low throughput, (continued)
- Re: high packet loss - low throughput Michal Purzynski (Jul 21)
- Re: high packet loss - low throughput beenph (Jul 21)
- Re: high packet loss - low throughput Joel Esler (Jul 21)
- Re: high packet loss - low throughput Michal Purzynski (Jul 21)
- Re: high packet loss - low throughput Michal Purzynski (Jul 22)
- Re: high packet loss - low throughput Livio Ricciulli (Jul 22)
- Re: high packet loss - low throughput Michal Purzynski (Jul 23)
- Re: high packet loss - low throughput Livio Ricciulli (Jul 23)
- Re: high packet loss - low throughput beenph (Jul 21)
- Re: high packet loss - low throughput Michal Purzynski (Jul 21)
- Re: high packet loss - low throughput beenph (Jul 21)
- Re: high packet loss - low throughput Michal Purzynski (Jul 21)
- Re: high packet loss - low throughput Doug Burks (Jul 21)
- Re: high packet loss - low throughput waldo kitty (Jul 19)
- Re: high packet loss - low throughput Michal Purzynski (Jul 21)