Attention is currently required from: Dinesh Gehlot, Eran Mitrani, Kapil Porwal, Paul Menzel, Sukumar Ghorai, Tarun.
Hello Dinesh Gehlot, Eran Mitrani, Kapil Porwal, Subrata Banik, Tarun, build bot (Jenkins),
I'd like you to reexamine a change. Please visit
https://review.coreboot.org/c/coreboot/+/79386?usp=email
to look at the new patch set (#5).
Change subject: mb/google/{rex,ovis}: Decrease EPP to 45% for MTL performance expectation ......................................................................
mb/google/{rex,ovis}: Decrease EPP to 45% for MTL performance expectation
The default EPP is set at 50%, which is deemed insufficiently aggressive for meeting the MTL performance expectations in balance_performance mode.
# cat /sys/devices/system/cpu/cpu0/cpufreq/energy_performance_preference balance_performance # iotools rdmsr 0 0x774 0x0000000080003f06
EPP=45% is giving the required performance in MTL. # iotools rdmsr 0 0x774 0x0000000073003d06
NOTE: Kernel changes are necessary to ensure that the EPP (Energy Performance Preference) configured in the BIOS is not overwritten: https://patchwork.kernel.org/patch/13461932
BUG=b:314275133 TEST=Build and boot.
Change-Id: I1953994cdb4e9363fdd4b4728e3e5236276c06c8 Signed-off-by: Sukumar Ghorai sukumar.ghorai@intel.com --- M src/mainboard/google/rex/variants/baseboard/ovis/devicetree.cb M src/mainboard/google/rex/variants/baseboard/rex/devicetree.cb 2 files changed, 8 insertions(+), 0 deletions(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/86/79386/5