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MapReduce >> mail # user >> What exactly does the "CPU time spent (ms)" measure?


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Re: What exactly does the "CPU time spent (ms)" measure?
Zhu,

 Do you mean the 'slot millis' counter?

Arun

On Jul 17, 2012, at 6:13 AM, GUOJUN Zhu wrote:

>
> Sometimes there are big discrepency between this time and the real running time at the task level.  It can be significantly less than the real running time; for some case, I observe that it is longer than the real running time.  What exactly does this counter measure? Thanks.
>
> Zhu, Guojun
> Modeling Sr Graduate
> 571-3824370
> [EMAIL PROTECTED]
> Financial Engineering
> Freddie Mac

--
Arun C. Murthy
Hortonworks Inc.
http://hortonworks.com/
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB