Hey Alex,
Which apps are having perf problems?
Also, is the issue present when the queue gets mapped to pipe0? (i.e. it
the perf regression only happens on pipe1+)
Regards,
Andres
On 2017-07-11 11:13 AM, Alex Deucher wrote:
> Spreading them causes performance regressions using compute
> queues.
>
> Cc: Jim Qu <jim.qu at amd.com>
> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
> index e26108a..4f6c68f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
> @@ -125,7 +125,8 @@ void amdgpu_gfx_compute_queue_acquire(struct amdgpu_device *adev)
> if (mec >= adev->gfx.mec.num_mec)
> break;
>
> - if (adev->gfx.mec.num_mec > 1) {
> + /* FIXME: spreading the queues across pipes causes perf regressions */
> + if (0) {
> /* policy: amdgpu owns the first two queues of the first MEC */
> if (mec == 0 && queue < 2)
> set_bit(i, adev->gfx.mec.queue_bitmap);
>
