On Wed, Aug 11, 2010 at 12:12 PM, James Peltier <[email protected]> wrote: > Hello fellow OpenBSD'ers. > > I would just like to share some information with the list about our new > firewall/bridge and perhaps get some input as to where I might be able to look > to squeeze some additional performance improvements. I must say though, I am > very impressed with the performance improvements of networking/PF in the > snapshots. > > Parameters: > =========== > bridge: OpenBSD 4.8-BETA (snapshot Aug 5, 2010)
... > So as can be seen here we are seeing data transfer rates of between 85 and > 90MBps. Pretty impressive for an first pass, untweaked configuration. > > However, there are some "unfortunates". During these tests the system was > running at between 80 and 95% interrupt, with the inverse being idle. This > means that either there are some tweaks that I can add to counteract the > interrupts, perhaps a tweak for interrupt mitigation, or that the hardware > is currently not able to handle more than a single gigabit link running at > full capacity. In any case I would like to know what the developers see if > better hardware would help as well as any performance tweaks that may help. > > These "unfortunates" are not really "bad news". The box is certainly up to > the task of dealing with our network traffic. Some tweaking may help and > for a first pass test it is a good baseline to work from and understand > where the bottlenecks are. I imagine you'll see better performance if you do not use OpenBSD as a bridge.
