[igt-dev] [PATCH i-g-t 8/8] gputop: Basic vendor agnostic GPU top tool

[Kamil Konieczny]

Hi Tvrtko,

On 2023-02-06 at 09:19:02 +0000, Tvrtko Ursulin wrote:
> 
> On 03/02/2023 16:42, Kamil Konieczny wrote:
> > Hi Tvrtko,
> > 
> > On 2023-01-31 at 11:32:37 +0000, Tvrtko Ursulin wrote:
> > > From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> > > 
> > > Rudimentary vendor agnostic example of how lib_igt_drm_clients can be used
> > > to display a sorted by card and usage list of processes using GPUs.
> > > 
> > > Borrows a bit of code from intel_gpu_top but for now omits the fancy
> > > features like interactive functionality, card selection, client
> > > aggregation, sort modes, JSON output  and pretty engine names. Also no
> > > support for global GPU or system metrics.
> > > 
> > > On the other hand it shows clients from all DRM cards which
> > > intel_gpu_top does not do.
> > > 
> > > Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> > > Cc: Rob Clark <robdclark at chromium.org>
> > > Cc: Christian König <ckoenig.leichtzumerken at gmail.com>
> > > Acked-by: Christian König <christian.koenig at amd.com>
> > 
> > I run it with:
> > # ./gputop
> > 
> > but it do not work on my Skylake card, I see no output,
> > kernel 5.19.0-29-generic, ubuntu 22.10
> 
> Odd, 5.19 should have the support. Intel_gpu_top works - it is showing the
> individual clients?

There is no display nor any gpu app running, when I run some igt tests
then it does sometimes prints some activity. Intel_gpu_top works and
shows headers and zero activity so it mislead me.

> 
> > 
> > # ./lsgpu
> > card0                    Intel Skylake (Gen9)              drm:/dev/dri/card0
> > └─renderD128                                               drm:/dev/dri/renderD128
> > 
> > Please add some options like debug, version, debug with high
> > verbose level, help. It seems like q or Q do not exit.
> 
> As the cover letter hints I was only set out to demonstrate an extremely
> rudimentary vendor agnostic tool. To quote the cover letter more - "..It
> also makes no effort to provide sorting modes, well any interactivity, or
> any pretty names for GPUs or engines..". I have no scope presently to make
> it better or nicer.
> 
> The tool however can serve as a starting point and people had reported it
> working as-is with a few other drivers, AMD, msm and most recently I believe
> etnaviv. So perhaps a pool of people to further improve it will be found
> there in the future.
> 
> In summary I think it's worth reviewing so that the common code gets
> extracted from intel_gpu_top into respective libraries. After that I was
> hoping other people start contributing further improvements.
> 
> Regards,
> 
> Tvrtko

I agree it is good starting point, it may have something like overall
gpu activity, imho something which shows gpu % usage (mem % and power %)
for all GPUs present.

Regards,
Kamil