On Mon, Jan 29, 2024 at 11:25 PM Mikhail Gavrilov <mikhail.v.gavrilov@xxxxxxxxx> wrote: > > On Fri, Jan 19, 2024 at 10:54 PM Mikhail Gavrilov > <mikhail.v.gavrilov@xxxxxxxxx> wrote: > > > I continued to search regressions in 6.8 kernel. > And found another one. > > cc478e0b6bdffd20561e1a07941a65f6c8962cab is the first bad commit > commit cc478e0b6bdffd20561e1a07941a65f6c8962cab > Author: Andrey Konovalov <andreyknvl@xxxxxxxxx> > Date: Tue Jan 9 23:12:34 2024 +0100 > > kasan: avoid resetting aux_lock > > Here I spotted a dropped FPS in the game "Shadow of the Tomb Raider". > For measuring performance I used an internal benchmark. > Before commit cc478e0b6bdffd20561e1a07941a65f6c8962cab was 111FPS on > commit aaa2c9a97c22af5bf011f6dd8e0538219b45af88 [1]. > On commit cc478e0b6bdffd20561e1a07941a65f6c8962cab I has only 63FPS [2] > And unfortunately the stackdepot patchset which I applied on top of > 6.8-rc2 didn't restore initial performance [3]. > > [1] https://i.postimg.cc/tgvwPTkz/c11-aaa2c9a97c22af5bf011f6dd8e0538219b45af88.png > [2] https://i.postimg.cc/pX8vHDCM/c10-cc478e0b6bdffd20561e1a07941a65f6c8962cab.png > [3] https://i.postimg.cc/hvWCb7dV/6-8-0-0-rc2-with-stackdepot.png Hi Mikhail, Please try to apply these two patches on top: https://lore.kernel.org/linux-mm/20240129100708.39460-1-elver@xxxxxxxxxx/ They effectively revert the change you mentioned. Thank you for testing!
