Le 7/27/12 7:28 PM, Rajiv Kasera a écrit :
Hi,
I have couple of questions related to Mina:
1. Is there any API which can provide the information on the number of
active sessions on a MINA server instance? Or this has to be built based on
the call of sessionCreated and sessionClosed method.
You can get an approximate number of running session by calling this
method :
IoSession.getService().getManagedSessionCount()
This is approximate as some session might have been closed by some other
thread.
2. Is there any limitation to the number of concurrent sessions that
can exist for a Mina server?
No.
I have seen instances where during a load
testing, from one physical machine if around 150 concurrent request are
initiated other clients are not able to make connection to the server.
It all depends on what you do on the server. For instance, if each
request does a search in a database, with a 100ms roundtrip, then don't
expect to get a high number of concurrent requests being processed,
unless you add an executor in the filter chain, or increase the number
of IoProcessors associated with the server.
Is
there any workaround for addressing this issue.
See upper.
Also with so many request
the CPU utilization jumps to 150% on a linux box with 2 cores.
Again, if your application is crunching numbers, then you should see
where it east CPU. MINA per se is not consuming a lot of CPU. FYI,
Apache DS which is based on MINA can easily cope with more than 4000
requests per second on my laptop...
--
Regards,
Cordialement,
Emmanuel Lécharny
www.iktek.com
