Issue #13103 has been updated by Josh Cooper.

Status changed from Unreviewed to Investigating
Affected Puppet version set to 2.7.12rc2

This may be more about how ruby implements blocking network IO on Windows. I 
wouldn't be surprised if it used a busy wait loop to "select" on multiple 
events, e.g. Ctrl-C.
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Bug #13103: CPU reached 100% during catalog run on puppet node
https://projects.puppetlabs.com/issues/13103#change-56836

Author: Collaboration TR
Status: Investigating
Priority: Normal
Assignee: Josh Cooper
Category: windows
Target version: 
Affected Puppet version: 2.7.12rc2
Keywords: windows, ftw
Branch: 


After installing and ran command "puppet agent --test" on windows machine. I 
observed CPU utilization from task manager and found that The CPU usage reached 
100% while connecting to puppet master to poll the catalog and dropped down 
when the catalog run is completed (about 10-30 seconds).

I use puppet agent windows preview version 2.5 which the official version will 
be released this April.


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