Intel Mesa Xe (TGL GT2)

[Clive McCarthy]

Something odd is happening. I'm using a NUC with an i7-1165G7 and the latest Oibaf Mesa driver on Linux 5.13 -- so far so good. I have an OpenGL application that I have been working on for ten years. It's artwork, around 400k lines of C code.

My current build has two oddities:

• The Mesa driver seems to have it's own memory management.
• All eight of the CPU threads are busy, most of the time.

My memory leak detector gives me confusing results because the 'hidden' management messes with mallinfo because the GPU shares memory with the CPU. The GPU grabs chunks of memory as it needs it but then 'manages' the chunks it so it is hard to know if you have a leak.

The past behavior for the CPU was to have quiet times when the GPU was busy. Now the CPU's threads are going like hell, nearly all the time. Very good. I like getting all the silicon I bought cranking. My guess is that the GPU driver is using all the resources of the i7-1165G7 far more than it once did.

Is this accurate ?


Screenshot at 2021-12-07 18-35-13.jpg

[Clive McCarthy]

Sorry, my mistake. My program is using all those core cycles. The GPU memory management remains an issue.