[igt-dev] [PATCH i-g-t] intel_gpu_top: Hide unused clients

[Tvrtko Ursulin]

On 01/02/2021 08:21, Chris Wilson wrote:
> Quoting Tvrtko Ursulin (2021-02-01 08:14:45)
>>
>> On 31/01/2021 03:11, Chris Wilson wrote:
>>> Keep new clients hidden until they utilise the GPU.
>>>
>>> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
>>> Cc: Tvrtko Ursulin <tvrtko.ursulin at linux.intel.com>
>>> ---
>>>    tools/intel_gpu_top.c | 5 ++++-
>>>    1 file changed, 4 insertions(+), 1 deletion(-)
>>>
>>> diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
>>> index 60ff62d28..66a8effa6 100644
>>> --- a/tools/intel_gpu_top.c
>>> +++ b/tools/intel_gpu_top.c
>>> @@ -828,8 +828,11 @@ static void update_client(struct client *c, unsigned int pid, char *name)
>>>                c->last[i] = val[i];
>>>        }
>>>    
>>> -     c->samples++;
>>> +     if (!c->total_runtime)
>>> +             return;
>>> +
>>>        c->status = ALIVE;
>>> +     c->samples++;
>>>    }
>>>    
>>>    static void
>>>
>>
>> Not sure we need to do it at this level and not instead at presentation
>> time.
> 
> My goal was just presentation :(

Something like this would be presentation time:

diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index 60ff62d28e5d..f7c5cc3bf19f 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -1942,6 +1942,9 @@ print_client(struct client *c, struct engines 
*engines, double t, int lines,
         unsigned int i;

         if (output_mode == INTERACTIVE) {
+               if (!c->total_runtime) /* make a key toggle? */
+                       return;
+
                 lines++;

                 printf("%6u %17s ", c->pid, c->print_name);

But it worries me a bit to do it by default.

> 
>> Plus, in default sort mode they would be at the end of the list,
>> so behind the more active clients. Or you go into sort by id and they
>> annoy you there?
> 
> No. I had a bunch of "Xorg" when launching steam which never became
> anything. So I guess just a bunch of dlopen("libgl") spawing a bunch of
> clients that we never used for anything more than gl[X]GetString, but
> leaked the fd.

But they were at the end, so potentially even cut of if enough 
interesting clients? Or you actually sorted by id? Or something else is 
broken?

> 
> [Why does steam need 10% of the gpu to update an icon on the toolbar
> which is hidden while minimised? Why do games sit in static menus at
> 100% gpu? Why?]

Yep, I have this issue with animated KDE tray icons. :I

Regards,

Tvrtko