On 11/2/2013 3:38 AM, Stefan Behte wrote: > Hi, > >>I think the pertinent question is: are you sure that the positioning of >>the DROP rule at present is actually causing a performance issue, and if >>so, how did you work that out? > > Yes, I'm sure, I've run several tests. I had the DROP rule on top of my > ruleset and checked if it matched the packets (iptables -nvxL), which it > did. > I then added the exact same rule to the mangle table and checked if the > packets get dropped there, which they did. I measured performance of the two > different rulesets with several tools, e.g. ifpps and found that the > DROP performance in the mangle table is WAY better. >
What percentage of the incoming packets in your test matched the DROP rule? What other rules do you have in the mangle table? -Tom -- Tom Eastep \ When I die, I want to go like my Grandfather who Shoreline, \ died peacefully in his sleep. Not screaming like Washington, USA \ all of the passengers in his car http://shorewall.net \________________________________________________
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