FYI, how to limit CPU usage of H2O on different operating systems

[Tom Kraljevic]

How to limit the CPU usage of H2O on different operating systems.

On windows:

You can start h2o explicitly from a CMD shell and specify /AFFINITY.

0x1 is a bitmask specifying H2O should use one core.  Adapt to your needs.

CMD> start /AFFINITY 0x1 java -Xmx4g -jar h2o.jar

On linux:

You can start h2o explicitly from a shell and wrap it with the taskset command.

0x1 is a bitmask specifying H2O should use one core.  Adapt to your needs.

% taskset 0x1 java -Xmx4g -jar h2o.jar

On mac:

We looked really hard, and MacOSX doesn’t seem to support processor affinity in they way the other OS’s do.

‘nice’ h2o instead.

If you find a better way, let us know!

(Note:  We tried various experiments with the thread_policy_set and THREAD_AFFINITY_POLICY but it didn’t do what we were wanting.)

% nice 20 java -Xmx4g -jar h2o.jar

Tom

On Sep 11, 2014, at 2:44 PM, SriSatish Ambati <sris...@0xdata.com> wrote:

fyi.  

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@hexadata How can I leave a core or two free on my machine when running h2o? - @unconsenting

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