Hi Anthony, On Thu, Jul 08, 2010 at 07:27:49PM +0000, Porcano, Anthony wrote: > Hi, > > My name is Anthony Porcano, and I work for 24/7 Real Media. We are evaluating > HAproxy for a new application, and I wanted to inquire about any services you > provide to customers taking on large installs. The volume we need to support > is approximately 100k requests per second, or roughly 8 billion requests per > day. In our testing thus far we have been able to achieve approximately 38k > connections per second on a single system. If you do provide any professional > services around HAproxy I would like to introduce you to some of our people > and work on getting you involved.
38k connections per second on a single system is already quite a good score, it's in the range of what I get in my home lab on a Core2Duo at 2.66 GHz with a tuned kernel. From my observations, at those ranges, eventhough you might notice a 85/15 share for system/ user CPU usage, there's generally not much more to gain by tuning the system any further because packet processing alone is costing a lot (which you can verify by starting iptables and adding only one rule). There are some possible optimizations in haproxy that you can use to save a few packets on each side, or to save a few memory copies if needed, depending on the context. I'd be particularly interested in exchanging with your people on the subject as I always am when users push haproxy to extreme loads, but as I stated it, I'm not hoping for a much higher result on a single system. If we succeed, that's fine of course ;-) Cheers, Willy
