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From Hack Kampbjørn <>
Subject Re: netty thread pool clarification
Date Tue, 25 Jun 2013 13:04:56 GMT
You had 160 tps with a 100ms sleep that gives a pool of 16 threads. In Netty 4.0 the default
pool size will be twice the number of cores, I guess it's the same for current 3.x that camel
is using. You are running on a system with 8 CPU cores (and 0% overhead inside netty or camel).

A computer cannot run more task that number of cores. If your code is not blocking (camel-netty
doesn't block but your thread.sleep example does) then any thread pool bigger than number
of cores is big enough.

Why are you using Thread.sleep? Are you trying to simulate a CPU heavy task, then you should
add more CPU cores. If you are simulating an external system that will take 100ms to respond
then convert your SleepProcessor to use AsyncProcessor and schedule the callback object to
be notified after 100ms

On 2013-06-25, at 13:56, kiranreddykasa <> wrote:

> Hi,
> Thanks for quick reply.
> And generally on a netty consumer is it okay to use additional thread pool
> or default thread pool is enough ?
> If default pool is enough what is it's pool size and how can I increase it?
> -----
> Regards
> kiran Reddy
> --
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