Darryl Pentz wrote:
Hi all,
Apologies for bumping this one - I was sure somebody would be able to respond
to this. We're seeing some really poor performance on some of our higher load
servers, but the problem is that to run profilers on them when they're under
load is just not feasible. So I'd like to know whether if ~800 concurrent
connections were pinging, would the below configuration be limited to the pool
of 16 AnonymousIoService objects and would this result in pegging the CPU
really high? Should I be switching to the manual threading model as per my
second post on this thread?
Very difficult to say.
You have to understand that it all depends on the way you process
messages in the codec and in the handler. MINA does not eat a lot of CPU
itself.
The number of thread you need to setup is impossible to define without
any knowledge about your code.
For instance, if you access a database in the handler, it's pretty
obvious that the thread might be stuck for a few ms, and with 800
concurrent requests running, you will get awfull performances. At this
point, it's all about decoupling the code run in handler from the MINA
stack, using Executors.
--
--
cordialement, regards,
Emmanuel Lécharny
www.iktek.com
directory.apache.org
