On January 9, 2008 08:20:40 am Vijay Sankar wrote: > On January 9, 2008 06:35:56 am Falk Brockerhoff wrote: > > Hello, > > > > I'm running two Dell Poweredge 2650 Servers with dual Xeon 2,2 GHz und 5 > > Gig Ram as a redundant firewall cluster, using Broadcom and Intel > > Gigabit Cards (bge and em Drivers). > > > > Last weekend I got a Denial of Service Attack on my network which brings > > the firewall to its limits. As some people sometimes asks for the > > maximum packets per seconds to handle with OpenBSD, here is my feedback: > > everything works fine up to roundabout 100-120k pps. > > > > A Dell Poweredge 1650 Dual P3 1,4 GHz with 2 Gigs of Ram and Intel > > Gigabit Cards (em Driver) handles up to 30-40k pps. > > > > Hope this value may help you for finding the matching hardware for your > > needs. > > > > Regards, > > > > Falk > > I changed from using HP DL380's to Dell 2950's in the last year or so since > it has better support for OpenBSD. With the DL380's, we were getting about > 70,000 pps during tests but after following the explanations about network > performance tuning in a great article by Henning Brauer (I have been > searching for it for the past hour but can't find the URL -- it was at the > www.openbsd.org web site and I had downloaded it couple of years ago), we > could get 180,000 pps on DL380's. On the 2950's, I haven't done any tests > yet but as soon as I find that paper, I will do so.
Finally found the paper I was looking for. It is at http://www.openbsd.org/papers/tuning-openbsd.ps Looks like it is older than I thought and some of the points in the paper are already addressed by new versions of OpenBSD. But it was very educational and helpful for me when I was trying to improve network performance on some servers. -- Vijay Sankar, M.Eng., P.Eng. President & CEO ForeTell Technologies Limited 59 Flamingo Avenue, Winnipeg, MB Canada R3J 0X6 Phone: +1 204 885 9535, E-Mail: [EMAIL PROTECTED]
