Re: Reporting, zooming in on details

On Fri, 8 Oct 2004, Henrik Nordstrom wrote:

> Is it possible to zoom in on a certain time range when generating 
> the report graphs?

Not with the tools provided with Polygraph, unfortunately. The 
reporter can only zoom into each test phase.

> If a test runs near to completetion and then something bad happens 
> the graphs gets quite screwed up, and sometimes it is valuable in 
> analyzing the results of the test to be able to zoom in on the valid 
> parts / discard invalid data.

It would be a useful feature to add.

If you do not want to modify existing tools, you can use ltrace to 
extract all available datapoints and then extract the interesting part 
from the trace. The latter is relatively easy to do since ltrace 
output is a plain text table that can include time as one of the 
columns. Once you have the right data subset, use gnuplot or another 
tool to graph the data. You can also use gnuplot filtering abilities 
to zoom or pan through complete ltrace output.

HTH,

Alex.