Local mode is really only intended to make developing and testing of Storm 
components easier by approximating the behavior of a real cluster locally. And 
it is certainly not meant for production.

You should see better resource utilization when you deploy to a real cluster.

- Taylor


On Mar 4, 2014, at 1:17 PM, shahab <[email protected]> wrote:

> Hi,
> 
> We are running Storm in Local Mode (local cluster) on Ubuntu. While running 
> Storm (consisting of 9 tasks across,w e have 8 Spout/Bolts, and except one 
> Bolt which is set for two tasks  all others set to run only one task), we 
> also monitored CPU and Core usage using "htop".
> We noticed that despite of heavy loads of Bolts, only ONE core is buys 
> (almost 100%) while others are never used ( by Storm ?).
> 
> We just wonder if there is anything wrong in our settings or this is the 
> expected behavior of Storm in Local Mode?
> 
> best,
> /Shahab

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