Yes I'm using c3p0 with hibernate, so I think it's directly managed by
Hibernate...
How can I do to free ByteBuffers much more as possible ?
With 2000 opened IoSessions I have about 312 Mb of ram busy.
When I receive chat messages I see memory occupation to grow...Is there
some natural mina
activity I'm losing during reading/writing operations ?
I switched from 10 threads to 5 threads yesterday, it seems to change
very little.
But I don't have an optimal view of the performance cause Java
implementation on
Mac Os X is very slow...
The applications main behaviour is to communicate in "blocks", slow,
then fast, then again slow,
it is not constant. How can be avoided this ?
I know that probably performance it's not the main target of this
mailing list, but if a network
application is not performant as you well know, it is not used if there
are many alternatives.
I have to understand if it's a physical architectural limit of Java/Mina
before seriously going on.
However I can say my application has improved from the beginning !
Thanks too this mailing list !
Bye, Alex
Justin Rudd wrote:
Hi ! Yesterday I put in stress my direct connect hub software on Mac
Os X 10.3.4 Tiger with latest Java implementation.
Max fake users reached number is 2500. When I reached this number the
application has thrown this exception:
[snip]
com.mchange.v2.async.ThreadPoolAsynchronousRunner
[EMAIL PROTECTED] -- APPARENT DEADLOCK!!! Creating emergency
threads for unassigned pending tasks!
Are you using c3p0? I haven't done an exhaustive look through the
source of 0.8.x, but that package prefix - com.mchange - looks like
c3p0 to me. If so, are you releasing all your connections? Because
c3p0 by default will use some background threads to clean things up.
It will spin them off to try and find connections it can use, create
new connection for clients that are waiting for them, etc. So if you
aren't cleaning all your resources up, it will keep spinning off
threads which will cause it to run out of memory.
If you aren't using c3p0, what other client libraries are you using?
--
Justin Rudd
"Get the facts first. You can distort them later."
- Mark Twain
http://seagecko.org/thoughts/
