[Webhob] Tasks I/O information collected in buildstats

Paul Eggleton paul.eggleton at linux.intel.com
Fri May 31 07:20:04 PDT 2013


On Friday 31 May 2013 14:05:08 Barros Pena, Belen wrote:
> We have answered pretty much all questions about task-related information,
> except one about task Disk I/O. Just wondering if anybody could help us
> with it.
> 
> Looking at the buildstats directory, it looks like we collect a whole
> bunch of task information that seems disk I/O related:
> 
> EndIOinProgress
> EndReadsComp
> EndReadsMerged
> EndSectRead
> EndSectWrite
> EndTimeIO
> EndTimeReads
> EndTimeWrite
> EndWTimeIO
> EndWritesComp
> StartIOinProgress
> StartReadsComp
> StartReadsMerged
> StartSectRead
> StartSectWrite
> StartTimeIO
> StartTimeReads
> StartTimeWrite
> StartWTimeIO
> StartWritesComp
> 
> I have no idea what the above really means, but I wonder if we could use
> it to calculate a single (yet meaningful) measure of Disk I/O for a given
> task. What such measure would be and how to calculate it is what I need
> help with.
> 
> Any thoughts?

FYI some hints on some of these from one of Beth's original commits:

http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=b525fc13063a6d681a14c871580efaab458dd370

Cheers,
Paul

-- 

Paul Eggleton
Intel Open Source Technology Centre



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