[PATCH] drm/vkms: Add information on how to benchmark

[Pekka Paalanen]

On Tue, 27 Feb 2024 08:44:52 -0300
Arthur Grillo <arthurgrillo at riseup.net> wrote:

> On 27/02/24 06:19, Pekka Paalanen wrote:
> > On Mon, 26 Feb 2024 17:42:11 -0300
> > Arthur Grillo <arthurgrillo at riseup.net> wrote:
> >   
> >> Now that we have a defined benchmark for testing the driver, add
> >> documentation on how to run it.
> >>
> >> Signed-off-by: Arthur Grillo <arthurgrillo at riseup.net>
> >> ---
> >>  Documentation/gpu/vkms.rst | 6 ++++++
> >>  1 file changed, 6 insertions(+)
> >>
> >> diff --git a/Documentation/gpu/vkms.rst b/Documentation/gpu/vkms.rst
> >> index ba04ac7c2167..6d07f79f77ff 100644
> >> --- a/Documentation/gpu/vkms.rst
> >> +++ b/Documentation/gpu/vkms.rst
> >> @@ -89,6 +89,12 @@ You can also run subtests if you do not want to run the entire test::
> >>    sudo ./build/tests/kms_flip --run-subtest basic-plain-flip --device "sys:/sys/devices/platform/vkms"
> >>    sudo IGT_DEVICE="sys:/sys/devices/platform/vkms" ./build/tests/kms_flip --run-subtest basic-plain-flip
> >>  
> >> +If you are developing features that may affect performance, you can run the kms_fb_stress  
> > 
> > s/can/must/
> >   
> >> +benchmark::  
> > 
> > before and after, and report the numbers.  
> 
> Did you mean to write the benchmarks logs here?

I mean people should be required tell their before and after numbers in
either commit message (my preference) or in series cover letter (if
benchmarking commits is not useful).

With the addition of YUV support in VKMS, maybe the benchmark needs to
start printing YUV numbers separately as a new case.


Thanks,
pq

> 
> >   
> >> +
> >> +  sudo ./build/benchmarks/kms_fb_stress --device "sys:/sys/devices/platform/vkms"
> >> +  sudo IGT_DEVICE="sys:/sys/devices/platform/vkms" ./build/benchmarks/kms_fb_stress  
> > 
> > Do people need to run both commands?  
> 
> No, they don't, just two options.
> 
> Best Regards,
> ~Arthur Grillo
> 
> > 
> > Anyway, a good idea.
> > 
> > Acked-by: Pekka Paalanen <pekka.paalanen at collabora.com>
> > 
> > 
> > Thanks,
> > pq
> >   
> >> +
> >>  TODO
> >>  ====
> >>  
> >>
> >> ---
> >> base-commit: eeb8e8d9f124f279e80ae679f4ba6e822ce4f95f
> >> change-id: 20240226-bench-vkms-5b8b7aab255e
> >>
> >> Best regards,  
> >   

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