[jetty-users] High select CPU usage

[Matthew Painter <matthew.painter@xxxxxxxxxx>]

Hi all,

I realise that there are bugs in Sun's/Oracle's implementation of the select channels for NIO, but I wanted to see if people think this is unusual :)

Monitoring a jetty server with VisualVM Sampler, the CPU Time for sun.nio.ch.WindowsSelectorImpl$SubSelector.poll0[native]() is equal to the time it is running. It seems to be using around 47% of the CPU time of the server.

This seems high - should I be expecting to see such high utilisation? 

I am running jdk 7u2b11 and jetty 7.5.1 on windows x64.

Thanks :)

Matt