[Javaserver-perl] Re: Some Query on JavaServer

[<ma...@zz...>]

Hey Shao,
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On Wed, Apr 14, 2004 at 12:20:17PM +0800, Shao Ming wrote:
>  
> Hi Mark,
>  
> first ... thanks for your great work.
>  
> I have a query on the performance of the Javaserver.
> Do you know how many simultaneous connections can it accept?

I haven't tested this so am not sure - basically it depends on the hardware
the JVM is running on.  There's no hard limit.  For every connection
JavaServer spawns off a thread to deal with it.
I guess the theoretical maximum is 65534 since each connection needs a port
on the server machine (& the 1 one well known port) - of course in reality
you've got other services listening on other ports so you'd run out before
then.  I'd guess 60000 would be about the max if your JVM/hardware can deal
with that number of Threads efficiently enough.

>  
> And how can I incease the amount of child processes listening?
>  

Same as above.
Now there is the standard (UNIX at least) 5 number of maximum queued
connections so if you're client are connecting simultaneously only 5 can be
queued up at a time while the JavaServer process deals with spawning a
connection.  Assuming you don't have more than 5 clients trying to connect
at once this is not a problem.
Also this value is tweakable, not sure thru Java, but for sure via your OS.

    Mark