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read-only mirror of https://gitlab.freedesktop.org/mesa/mesa
1a475c70b2
The default vn_relax is mainly targeting Vulkan commands expecting a rely like object creation and property queries. The defined relax reason here is VN_RELAX_REASON_RING_SPACE. The polling strategy involves more busy waits to overcome sleep penalty affecting cpu utilization, as well as an edge case for Android system server which forces to sleep longer even with trivial hrtimer interval. However, for the below relax reasons: - VN_RELAX_REASON_RING_SPACE - VN_RELAX_REASON_FENCE - VN_RELAX_REASON_SEMAPHORE - VN_RELAX_REASON_QUERY It's a waste of cpu cycles if we do more busy waits if the initial polled signals are not "ready". Having less busy waits there allows to jump to higher order of sleeps sooner to disturb the scheduler less until signaled. Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28287> |
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`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library ====================================================== Source ------ This repository lives at https://gitlab.freedesktop.org/mesa/mesa. Other repositories are likely forks, and code found there is not supported. Build & install --------------- You can find more information in our documentation (`docs/install.rst <https://mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://mesa3d.org/meson.html>`_): .. code-block:: sh $ mkdir build $ cd build $ meson .. $ sudo ninja install Support ------- Many Mesa devs hang on IRC; if you're not sure which channel is appropriate, you should ask your question on `OFTC's #dri-devel <irc://irc.oftc.net/dri-devel>`_, someone will redirect you if necessary. Remember that not everyone is in the same timezone as you, so it might take a while before someone qualified sees your question. To figure out who you're talking to, or which nick to ping for your question, check out `Who's Who on IRC <https://dri.freedesktop.org/wiki/WhosWho/>`_. The next best option is to ask your question in an email to the mailing lists: `mesa-dev\@lists.freedesktop.org <https://lists.freedesktop.org/mailman/listinfo/mesa-dev>`_ Bug reports ----------- If you think something isn't working properly, please file a bug report (`docs/bugs.rst <https://mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.