[Insight-developers] Reducing CTest Output

[Bill Lorensen]

Well, at least we can baseline the size of the test output. As you
mentioned earlier, it is a good thing to keep the output small. I'm
looking at a number of solutions.

On Tue, Oct 4, 2011 at 9:30 AM, Bill Hoffman <bill.hoffman at kitware.com> wrote:
> On 10/3/2011 5:13 PM, Bill Lorensen wrote:
>>
>> Dave,
>>
>> This is great.
>>
>> Define, Measure, Analyze, Improve, Control
>>
>> The discussion on the list has been valuable (Define);
>>
>> I hope you were able to get some timing tests to establish a baseline
>> (Measure). We will want to compare once I complete my improvement
>> step.
>
> This is somewhat difficult to do.  There are many variables involved. The DB
> gets slower as it gets bigger.  So, just stuffing a bunch of tests into an
> empty DB and timing them does not necessarily give a realistic picture.  I
> think we will have to instrument the CDash code some to capture some of this
> information.  Server load also has an effect. However, from a standpoint of
> it takes longer to process more data, then shrinking the size of the data is
> always a good idea.
>
> We can of course time the processing on a single machine.  We can do a
> before and after for the same number of ITK tests.  I expect there will be
> speed up with reduced size, but it may not be reflected exactly in the
> running CDash.
>
>>
>> I've started to Analyze the results.
>>
>> As I mentioned before, just by fixing errors in 3 tests I reduced the
>> output by about 1.5 million characters, a 7% reduction (Improve).
>>
>> I expect I can do much better.
>>
>> I'll summarize the results on a wiki page once I finish the analysis.
>>
>
> Thanks.
>
> -Bill
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