On 01/24/2017 07:39 AM, Michel Dänzer wrote:
On 24/01/17 05:44 AM, Samuel Pitoiset wrote:
Useful when debugging applications which map too much VRAM.
Is the number of mapped buffers really useful, as opposed to the total
size of buffer mappings? Even if it was the latter though, it doesn't
show which mappings are for BOs in VRAM vs GTT, does it? Also, even the
total size of mappings of BOs currently in VRAM doesn't directly reflect
the pressure on the CPU visible part of VRAM — only the BOs which are
actively being accessed by the CPU contribute to that.
It's actually useful to know the number of mapped buffers, but maybe it
would be better to have two separate counters for GTT and VRAM. Although
the number of mapped buffers in VRAM is most of the time very high
compared to GTT AFAIK.
I will submit in a follow-up patch, something which reduces the number
of mapped buffers in VRAM (when a BO has been mapped only once). And
this new counter helped me.
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