| Message ID | 20240704074755.48885-1-acelan.kao@canonical.com |
|---|---|
| Headers | show |
| Series | FPS of glxgear with fullscreen is too low on MTL platform | expand |
On 24/07/04 03:47pm, AceLan Kao wrote: > From: "Chia-Lin Kao (AceLan)" <acelan.kao@canonical.com> > > BugLink: https://bugs.launchpad.net/bugs/2069380 > > [Impact] > Run `glxgears -fullscreen` and the FPS can't stay at 60 FPS > 298 frames in 5.0 seconds = 59.465 FPS > 241 frames in 5.0 seconds = 48.193 FPS > 261 frames in 5.0 seconds = 52.030 FPS > 268 frames in 5.0 seconds = 53.596 FPS > > [Fix] > Bisect the kernel and found a commit in v6.9-rc1 fixes the issue > c08c364102d0 drm/i915: Bypass LMEMBAR/GTTMMADR for MTL stolen memory access > > [Test] > 1. Run `glxgears -fullscreen` on MTL platforms > 2. The FPS should be always around 60 > > [Where problems could occur] > It's a workaround only affects MTL platforms, and there is no > "fixed commit" for this patch after v6.9-rc1. So, it should be safe and > essential for MTL platforms. > > Ville Syrjälä (1): > drm/i915: Bypass LMEMBAR/GTTMMADR for MTL stolen memory access > > drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 6 +++++- > drivers/gpu/drm/i915/gt/intel_ggtt.c | 10 +++++++++- > drivers/gpu/drm/i915/i915_reg.h | 3 +++ > drivers/gpu/drm/i915/i915_utils.c | 17 +++++++++++++++++ > drivers/gpu/drm/i915/i915_utils.h | 2 ++ > 5 files changed, 36 insertions(+), 2 deletions(-) Acked-by: Andrei Gherzan <andrei.gherzan@canonical.com>
On Thu, Jul 04, 2024 at 03:47:54PM +0800, AceLan Kao wrote: > From: "Chia-Lin Kao (AceLan)" <acelan.kao@canonical.com> > > BugLink: https://bugs.launchpad.net/bugs/2069380 Acked-by: Paolo Pisati <paolo.pisati@canonical.com>
On 04.07.24 09:47, AceLan Kao wrote: > From: "Chia-Lin Kao (AceLan)" <acelan.kao@canonical.com> > > BugLink: https://bugs.launchpad.net/bugs/2069380 > > [Impact] > Run `glxgears -fullscreen` and the FPS can't stay at 60 FPS > 298 frames in 5.0 seconds = 59.465 FPS > 241 frames in 5.0 seconds = 48.193 FPS > 261 frames in 5.0 seconds = 52.030 FPS > 268 frames in 5.0 seconds = 53.596 FPS > > [Fix] > Bisect the kernel and found a commit in v6.9-rc1 fixes the issue > c08c364102d0 drm/i915: Bypass LMEMBAR/GTTMMADR for MTL stolen memory access > > [Test] > 1. Run `glxgears -fullscreen` on MTL platforms > 2. The FPS should be always around 60 > > [Where problems could occur] > It's a workaround only affects MTL platforms, and there is no > "fixed commit" for this patch after v6.9-rc1. So, it should be safe and > essential for MTL platforms. > > Ville Syrjälä (1): > drm/i915: Bypass LMEMBAR/GTTMMADR for MTL stolen memory access > > drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 6 +++++- > drivers/gpu/drm/i915/gt/intel_ggtt.c | 10 +++++++++- > drivers/gpu/drm/i915/i915_reg.h | 3 +++ > drivers/gpu/drm/i915/i915_utils.c | 17 +++++++++++++++++ > drivers/gpu/drm/i915/i915_utils.h | 2 ++ > 5 files changed, 36 insertions(+), 2 deletions(-) > Applied to noble:linux/master-next. Thanks. -Stefan
From: "Chia-Lin Kao (AceLan)" <acelan.kao@canonical.com> BugLink: https://bugs.launchpad.net/bugs/2069380 [Impact] Run `glxgears -fullscreen` and the FPS can't stay at 60 FPS 298 frames in 5.0 seconds = 59.465 FPS 241 frames in 5.0 seconds = 48.193 FPS 261 frames in 5.0 seconds = 52.030 FPS 268 frames in 5.0 seconds = 53.596 FPS [Fix] Bisect the kernel and found a commit in v6.9-rc1 fixes the issue c08c364102d0 drm/i915: Bypass LMEMBAR/GTTMMADR for MTL stolen memory access [Test] 1. Run `glxgears -fullscreen` on MTL platforms 2. The FPS should be always around 60 [Where problems could occur] It's a workaround only affects MTL platforms, and there is no "fixed commit" for this patch after v6.9-rc1. So, it should be safe and essential for MTL platforms. Ville Syrjälä (1): drm/i915: Bypass LMEMBAR/GTTMMADR for MTL stolen memory access drivers/gpu/drm/i915/gem/i915_gem_stolen.c | 6 +++++- drivers/gpu/drm/i915/gt/intel_ggtt.c | 10 +++++++++- drivers/gpu/drm/i915/i915_reg.h | 3 +++ drivers/gpu/drm/i915/i915_utils.c | 17 +++++++++++++++++ drivers/gpu/drm/i915/i915_utils.h | 2 ++ 5 files changed, 36 insertions(+), 2 deletions(-)