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 <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
---
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);
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