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[AMD Official Use Only]<br>
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The format is simple:</div>
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<span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt;"><ringname><index>: <XXX.XX> %</span><br>
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we also have entries for the memory mapped:</div>
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mem <ttm pool> : <size> KiB</div>
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On my submission <a href="https://lists.freedesktop.org/archives/amd-gfx/2021-May/063149.html" id="LPlnk856153">https://lists.freedesktop.org/archives/amd-gfx/2021-May/063149.html</a> I added a python script to print out the info. It has a CPU usage lower that
top, for example.</div>
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To be absolutely honest, I agree that there is an overhead, but It might not be as much as you fear.</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com><br>
<b>Sent:</b> Monday, May 17, 2021 9:00 AM<br>
<b>To:</b> Nieto, David M <David.Nieto@amd.com>; Daniel Vetter <daniel@ffwll.ch>; Koenig, Christian <Christian.Koenig@amd.com><br>
<b>Cc:</b> Alex Deucher <alexdeucher@gmail.com>; Intel Graphics Development <Intel-gfx@lists.freedesktop.org>; Maling list - DRI developers <dri-devel@lists.freedesktop.org><br>
<b>Subject:</b> Re: [PATCH 0/7] Per client engine busyness</font>
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On 17/05/2021 15:39, Nieto, David M wrote:<br>
> [AMD Official Use Only]<br>
> <br>
> <br>
> Maybe we could try to standardize how the different submission ring <br>
> usage gets exposed in the fdinfo? We went the simple way of just <br>
> adding name and index, but if someone has a suggestion on how else we <br>
> could format them so there is commonality across vendors we could just <br>
> amend those.<br>
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Could you paste an example of your format?<br>
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Standardized fdinfo sounds good to me in principle. But I would also <br>
like people to look at the procfs proposal from Chris,<br>
- link to which I have pasted elsewhere in the thread.<br>
<br>
Only potential issue with fdinfo I see at the moment is a bit of an <br>
extra cost in DRM client discovery (compared to my sysfs series and also <br>
procfs RFC from Chris). It would require reading all processes (well <br>
threads, then maybe aggregating threads into parent processes), all fd <br>
symlinks, and doing a stat on them to figure out which ones are DRM devices.<br>
<br>
Btw is DRM_MAJOR 226 consider uapi? I don't see it in uapi headers.<br>
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> I’d really like to have the process managers tools display GPU usage <br>
> regardless of what vendor is installed.<br>
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Definitely.<br>
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Regards,<br>
<br>
Tvrtko<br>
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