[Gluster-devel] 1st results: gcov/lcov code coverage of glusterfs

[Justin Clift]

On 11/05/2013, at 6:13 PM, John Smith wrote:
> On Sat, May 11, 2013 at 2:51 AM, Justin Clift <jclift at redhat.com> wrote:
>> 
>> Heh, I personally have no idea with gcov/lcov stuff, so other people that
>> do have a clue with it would be the ones to respond. :)
>> 
> My sincerest apologies if I misunderstand here, but... ( i cant tell
> if your kidding or not about not having a clue).

Wasn't kidding, so this was actually helpful. :)

Vijay, this lcov/gcov stuff is useful for the testing guys isn't it?

+ Justin


> gcov/lcov basically shows you how much of your codebase actually gets
> executed during your testing. First you create a baseline ('before')
> snapshot of your project. Then you run all of your tests. And then you
> take another 'after' snapshot of your project. By comparing the two
> snapshots you can now tell exactly what code was executed during your
> tests. This tells you how effective your tests are, and in which areas
> you may need to do more testing.
> 
> So in the glusterfs case here, for example shows that about 80% all of
> 'socket.c' gets executed which is good. No immediate need to devise
> any new tests that explicitly utilize it.
> 
> http://lbalbalba.x90x.net/lcov/glusterfs/rpc/rpc-transport/socket/src/socket.c.gcov.html
> 
> On the other hand, 'read-only-common.c' does not get executed even
> once. So you may need to create a test that uses that code.
> 
> http://lbalbalba.x90x.net/lcov/glusterfs/xlators/features/read-only/src/read-only-common.c.gcov.html
> 
> 
> 
> Anyway, again my apologies if you knew this already.
> 
> 
> Hope this helps,
> 
> 
> Regards
> 
> 
> John Smith.

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