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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Raven: pci_pm_suspend takes over 1 second"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107277#c3">Comment # 3</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO - Raven: pci_pm_suspend takes over 1 second"
href="https://bugs.freedesktop.org/show_bug.cgi?id=107277">bug 107277</a>
from <span class="vcard"><a class="email" href="mailto:pmenzel+bugs.freedesktop@molgen.mpg.de" title="Paul Menzel <pmenzel+bugs.freedesktop@molgen.mpg.de>"> <span class="fn">Paul Menzel</span></a>
</span></b>
<pre>(In reply to Christian König from <a href="show_bug.cgi?id=107277#c2">comment #2</a>)
<span class="quote">> There isn't much you can do here:
> > amdgpu_bo_evict_vram [amdgpu] (306.331 ms @ 74.694620)
>
> This is evacuating the content of VRAM to RAM/disk to make sure we don't
> lose screen content while suspended.</span >
I do not understand that. The integrated graphics device uses the system RAM
as VRAM doesn’t it? So why does it have to be evicted at all? Also, I believe
it’s 1 GB of VRAM. That means the speed would be 3 GB/s, where it should be
much higher with DDR4 shouldn’t it?
<span class="quote">> > amdgpu_fence_driver_suspend [amdgpu] (0.023 ms @ 75.000953)
>
> Waiting for the evacuation to be completed.
>
> > amdgpu_device_ip_suspend [amdgpu] (694.390 ms @ 75.000977)
>
> This is hardware teardown and rather interesting and the only point we could
> actually do something. Can you figure out what takes so long here?</span >
I’ll try to figure that out.
<span class="quote">> > amdgpu_bo_evict_vram [amdgpu] (24.217 ms @ 75.695369)
>
> Again evacuating VRAM which was locked before because the hardware was still
> using it.</span ></pre>
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