Re: Best tests to measure Kernel Performance

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On Tue, Dec 1, 2015 at 7:32 PM, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote:
> On Tue, Dec 01, 2015 at 06:45:51PM -0600, Victor Rodriguez wrote:
>> Hi
>>
>> Despite the fact that this is not a well formulated question. I wonder
>> what tests could be a good subset to measure the performance of the
>> kernel . I have some approaches like phoronix does here :
>>
>> http://www.phoronix.com/scan.php?page=article&item=linux-41-byt&num=1
>>
>> I am sure postmark/ John the ripper/ Apache are good candidates but I
>> want to ask the community if there is some specific test that you
>> recommend
>
> It depends on what you want to test, specifically.  The "kernel" isn't a
> very specific thing, what most of those tests test is the speed of the
> hardware, not specifically the kernel itself.
>
> good luck,
>
> greg k-h

Thanks for the feedback . You are right they test the speed of the HW
however I have seen that when there is a change in the kernel for
network the performance of apache is changed, which make total sense .

I think that LTSI should have kind of a test suite with significant
test that could help the developer to detect those perf changes. Is
very common that one as OS developer make a change in one package (
important one as the kernel ) and do not check how this affect the
performance of the OS ( I know is too general , but we might show
BKM's)

I think this might be a good topic to discuss with the community and
we could came with a solid recommended test suite in the LTSI project.

Feedback more than welcome

Regards

Victor Rodriguez

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