[jboss-dev-forums] [Design of JBoss Remoting, Unified Invokers] - Re: Why bother with APR?

[timfox]

"david.lloyd at jboss.com" wrote : "remy.maucherat at jboss.com" wrote : Actually, I think NIO is pointless.
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  | I didn't ask, "Who here thinks NIO is pointless".  I asked if there were any good benchmarks comparing NIO to APR in terms of performance.
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  | I've also heard things like "APR is more flexible", but I haven't seen any information to back that up either.

I believe the RHM team compared NIO (using Apache MINA) to Apache APR and also to asynchronous IO using direct Linux OS calls (i.e. not going through the APR abstraction layer).

I believe the direct hooks gave the best performance, NIO was pretty good, and APR not so good due to the overhead of having to find a common API over all OSs.

Sorry for the vaguities, but this is what I remember them mentioning. Don't know if their findings were correct or not.

BTW we (JBM) definitely need NIO for handling large number of connections. APR is a "nice to have" if it gives radically better performance than NIO, but I'm not particularly bothered about it.

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