Performance Tracker project update

[Brooks Davis]

On Wed, Jan 23, 2008 at 05:48:23AM +0100, Erik Cederstrand wrote:
> Hi
> 
> I'd like to send a small update on my progress on the Performance Tracker 
> project.
> 
> I now have a small setup of a server and a slave chugging along, currently 
> collecting data. I'm following CURRENT and collecting results from 
> super-smack and unixbench.
> 
> The project still needs some work, but there's a temporary web interface to 
> the data here: http://littlebit.dk:5000/plot/. Apart from the plotting it's 
> possible to compare two dates and see the files that have changed. Error 
> bars are 3*standard deviation, for the points with multiple measurements.
> 
> Of interest is e.g. super-smack (select-key, 1 client) right when the 
> GENERIC kernel was moved from the 4BSD to ULE scheduler on Oct. 19. 
> Unixbench (arithmetic test, float) also has a significant jump on Oct. 3.
> 
> There setup of the slave is documented roughly on the page but I'll be 
> writing a full report and documentation over the next month.

Nice work so far!  It's neat that you've already been able to spot changes.

A couple suggestions for the graphs.  It would be nice if the graphs had an
arrow indicating the "good" direction (i.e. which direction of movement is an
improvement).  Also, a graph of the derivative of the curve might be
interesting for at a glance trending.

-- Brooks
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