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e850b2c74a
With the introduction of the slab allocator, most of our small allocations now hit that rather than directly hitting the bucket cache. Those now show up as 2MB slab allocations from the cache's perspective. So, we don't need quite as many buckets. (Note that only allocations in IRIS_MEMZONE_OTHER are suballocated today.) Previously, we had 55 buckets, going from 4KB to 112MB, with sizes N, N+1/4, N+1/2, N+3/4 for a series of power-of-two N's. This patch prunes it down to 25 buckets: - 4K-4MB => power-of-two sizes only - 6MB => a one-off bucket to reduce waste between 4MB and 8MB - 8MB+ => the usual N, N+1/4, N+1/2, N+3/4 system - 64MB => the largest bucket size In particular, this eliminates the 1.75MB, 2.5MB, 3MB, 3.5MB, and 7MB buckets in favor of multiples of 2MB. Allocating multiples of 2MB is preferable because it allows the kernel to allocate 64KB pages rather than being stuck using inefficient 4K pages. And, the amount of waste from bumping to the next multiple of 2MB isn't huge in that range of sizes. We also eliminate buckets larger than 64MB because they're rarely used, and also the amount of waste from rounding up to the 80/96/112MB buckets can get pretty large. Reviewed-by: José Roberto de Souza <jose.souza@intel.com> Fixes: |
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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://docs.mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://docs.mesa3d.org/meson.html>`_): .. code-block:: sh $ meson setup build $ ninja -C build/ $ sudo ninja -C build/ 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://docs.mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://docs.mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.