Hi, On Mon, Nov 28, 2011 at 14:13, Matthew Painter <[email protected]> wrote: > 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.
Please give 7.6.x a try, we have reworked the NIO layer and we should have fixed all those spins. Simon -- http://cometd.org http://intalio.com http://bordet.blogspot.com ---- Finally, no matter how good the architecture and design are, to deliver bug-free software with optimal performance and reliability, the implementation technique must be flawless. Victoria Livschitz _______________________________________________ jetty-users mailing list [email protected] https://dev.eclipse.org/mailman/listinfo/jetty-users
