2024-06-06 18:12:55

by srinivas pandruvada

Subject: [PATCH] cpufreq: intel_pstate: Update Meteor Lake EPPs

Update the default balance_performance EPP to 64. This gives better
performance and also perf/watt compared to current value of 115.

For example:

Speedometer 2.1
score: +19%
Perf/watt: +5.25%

Webxprt 4 score
score: +12%
Perf/watt: +6.12%

3DMark Wildlife extreme unlimited score
score: +3.2%
Perf/watt: +11.5%

Geekbench6 MT
score: +2.14%
Perf/watt: +0.32%

Also update balance_power EPP default to 179. With this change:
Video Playback power is reduced by 52%
Team video conference power is reduced by 35%

With Power profile daemon now sets balance_power EPP on DC instead of
balance_performance, updating balance_power EPP will help to extend
battery life.

Signed-off-by: Srinivas Pandruvada <[email protected]>
---
drivers/cpufreq/intel_pstate.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index dbbf299f4219..8b0032d6a519 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -3429,7 +3429,7 @@ static const struct x86_cpu_id intel_epp_default[] = {
X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_L, HWP_SET_DEF_BALANCE_PERF_EPP(102)),
X86_MATCH_INTEL_FAM6_MODEL(SAPPHIRERAPIDS_X, HWP_SET_DEF_BALANCE_PERF_EPP(32)),
X86_MATCH_INTEL_FAM6_MODEL(METEORLAKE_L, HWP_SET_EPP_VALUES(HWP_EPP_POWERSAVE,
- HWP_EPP_BALANCE_POWERSAVE, 115, 16)),
+ 179, 64, 16)),
{}
};

--
2.44.0

2024-06-07 19:08:51

by Rafael J. Wysocki

Subject: Re: [PATCH] cpufreq: intel_pstate: Update Meteor Lake EPPs

On Thu, Jun 6, 2024 at 8:12 PM Srinivas Pandruvada
<[email protected]> wrote:
>
> Update the default balance_performance EPP to 64. This gives better
> performance and also perf/watt compared to current value of 115.
>
> For example:
>
> Speedometer 2.1
> score: +19%
> Perf/watt: +5.25%
>
> Webxprt 4 score
> score: +12%
> Perf/watt: +6.12%
>
> 3DMark Wildlife extreme unlimited score
> score: +3.2%
> Perf/watt: +11.5%
>
> Geekbench6 MT
> score: +2.14%
> Perf/watt: +0.32%
>
> Also update balance_power EPP default to 179. With this change:
> Video Playback power is reduced by 52%
> Team video conference power is reduced by 35%
>
> With Power profile daemon now sets balance_power EPP on DC instead of
> balance_performance, updating balance_power EPP will help to extend
> battery life.
>
> Signed-off-by: Srinivas Pandruvada <[email protected]>
> ---
> drivers/cpufreq/intel_pstate.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
> index dbbf299f4219..8b0032d6a519 100644
> --- a/drivers/cpufreq/intel_pstate.c
> +++ b/drivers/cpufreq/intel_pstate.c
> @@ -3429,7 +3429,7 @@ static const struct x86_cpu_id intel_epp_default[] = {
> X86_MATCH_INTEL_FAM6_MODEL(ALDERLAKE_L, HWP_SET_DEF_BALANCE_PERF_EPP(102)),
> X86_MATCH_INTEL_FAM6_MODEL(SAPPHIRERAPIDS_X, HWP_SET_DEF_BALANCE_PERF_EPP(32)),
> X86_MATCH_INTEL_FAM6_MODEL(METEORLAKE_L, HWP_SET_EPP_VALUES(HWP_EPP_POWERSAVE,
> - HWP_EPP_BALANCE_POWERSAVE, 115, 16)),
> + 179, 64, 16)),
> {}
> };
>
> --

Rebased on top of the Tony's series:

https://lore.kernel.org/linux-acpi/[email protected]/

and applied as 6.11 material.

Thanks!