Re: Review Request 38234: Check if swap is enabled before running memory pressure related tests.

[Vinod Kone <vi...@gmail.com>]

> On Nov. 17, 2015, 7:27 p.m., Vinod Kone wrote:
> > src/tests/containerizer/cgroups_tests.cpp, lines 560-568
> > <https://reviews.apache.org/r/38234/diff/1/?file=1066658#file1066658line560>
> >
> >     instead of asserting, it would be better if we can disable the test automatically if we detect that swap is enabled.
> >     
> >     for example, we can change the test name to ROOT_CGROUPS_OOM_Listen
> >     
> >     and in environment.cpp, disable the test if 'OOM' token is present in the test name and swap is enabled.
> >     
> >     
> >     also, does the swap issue not affect the balloon framewok test?
> 
> Chi Zhang wrote:
>     Yeah, I wanted to do that to disable other tests dymaically before and final result was just to use this style, so I did the same to be consistent.
>     
>     re-read the code again for balloon frame tests: slave has 96MB memory, executor uses 64MB, 32 left to the task, balloon() allocates 64MB at a time, which basically means first allocation request will cause OOM (64 > 32).
>     
>     If the step was set to say do 3 times 16MBs, (3x16 > 32), the extra 16MB will be eaten by swap and not cause a OOM if swap is enabled.

not sure why dynamica disabling didn't work before, but i'll add a TODO for now and commit this.


- Vinod


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On Sept. 9, 2015, 9:33 p.m., Chi Zhang wrote:
> 
> -----------------------------------------------------------
> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/38234/
> -----------------------------------------------------------
> 
> (Updated Sept. 9, 2015, 9:33 p.m.)
> 
> 
> Review request for mesos and Jie Yu.
> 
> 
> Bugs: mesos-2918
>     https://issues.apache.org/jira/browse/mesos-2918
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> Check if swap is enabled before running memory pressure related tests.
> 
> 
> Diffs
> -----
> 
>   src/tests/containerizer/cgroups_tests.cpp 75a3bc0009c037dc18ce319db2eb44630f083e8c 
> 
> Diff: https://reviews.apache.org/r/38234/diff/
> 
> 
> Testing
> -------
> 
> 
> Thanks,
> 
> Chi Zhang
> 
>