Huawei Proposes Enabling CPU Boost By Default For ACPI CPPC Linux Driver
Huawei suggests enabling CPU boost by default for the ACPI CPPC Linux driver on ARM64 servers to improve performance.
Intelligence analysis by Qwen 2.5 (3B)
Huawei proposes enabling CPU boost by default for the ACPI CPPC Linux driver on ARM64 servers to enhance performance.
Huawei wants to make it easier for Linux servers to use a feature that lets the computer's CPU work harder and faster, which can make the computer run better.
Analysis
{"#Proposed Change":"The proposed change is to enable CPU boost by default for the ACPI CPPC Linux driver on ARM64 servers. This is in response to the current default setting which disables CPU boost mode.","Impact on Performance":"The proposed change aims to improve performance on Linux server platforms, especially for those using the generic ACPI CPPC CPUFreq driver. This is particularly relevant for platforms where the highest performance level is greater than the nominal performance level.","Developer Feedback":"Arm engineer and Linux developer Christian Loehle has provided feedback on the proposed change. He suggests that the boost mode may not have much meaning due to the complexity of power and thermal envelopes on modern silicon. He also notes that users can set their own performance ceilings via scaling_max_freq."}
Key points
- Huawei proposes enabling CPU boost by default for the ACPI CPPC Linux driver on ARM64 servers.
- The current default setting disables CPU boost mode, which can limit performance.
- Arm engineer Christian Loehle suggests that the boost mode may not have much meaning due to modern silicon complexity.
If the proposal is accepted, it could lead to better performance for Linux server platforms, especially those using the generic ACPI CPPC CPUFreq driver.
If the proposal is not accepted, users may still need to manually enable the CPU boost feature, which could be inconvenient.
