I've been meaning to post this for a while but have been lazy. With Mr.
Royal's help, a new project my company has been working on has been able to
achieve 120,000 concurrent connections with MINA.
We are using a distributed model that looks something like this: client -->
"gateway" --> server where many gateways front-end the server. By offsetting
the connection overhead to gateways, we have been able to scale much farther
then normal. Depending on the number of messages per second, it's possible
to scale even farther. We believe a single server could handle 1/4 million
users or more without any changes (assuming you had the appropriate number
of gateways). In the end, garbage collector churn has been the limiting
factor in every test. Once we hit 50,000+ inbound messages per second on the
server any garbage collector delays become a bottleneck from which we can't
always recover. Work is being done to correct this though by reducing object
churn.
MINA has been the single largest reason we were able to create the
application at all. Simply put, MINA works beautifully with an elegant and
powerful design. A big thank you goes out from me to the MINA developers and
contributors.
Thanks!
Mike
P.S. When the server goes public (it's a purchasable product) I'll go ahead
and publish the final load test results. Right now we are working on making
it so servers can be clustered together. This will raise the user limit
potentially into the millions. MINA rocks!
----- Original Message -----
From: "Marc Boorshtein" <[EMAIL PROTECTED]>
To: <[email protected]>; "Apache Directory Developers List"
<[email protected]>
Sent: Friday, February 23, 2007 2:26 PM
Subject: MINA 1.0.2 Scalability?
I was curious if any scalability testing has been done on MINA based
servers and any scalability tips that may be available. I've already
upped my SocketAcceptor threads which is not seeming to help. MyVD
uses MINA for it's protocol stack (based on the apacheds stack). No
matter what I do, I can't seem to go beyond 10 concurrent connections
and was wondering if anyone else had seen this?
Thanks
Marc
