| Message ID | 1428811830-15006-6-git-send-email-dsmythies@telus.net (mailing list archive) |
|---|---|
| State | RFC, archived |
| Headers | show |
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 66e662d..a374309 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -626,7 +626,7 @@ static struct cpu_defaults core_params = { .sample_rate_ms = 10, .deadband = 0, .setpoint = 97, - .p_gain_pct = 20, + .p_gain_pct = 10, .d_gain_pct = 0, .i_gain_pct = 0, .c0_ceiling = 950, @@ -646,7 +646,7 @@ static struct cpu_defaults byt_params = { .sample_rate_ms = 10, .deadband = 0, .setpoint = 97, - .p_gain_pct = 20, + .p_gain_pct = 10, .d_gain_pct = 0, .i_gain_pct = 4, .c0_ceiling = 950,
A default IIR filter gain of 10 percent is recommended. It best matches a rising edge step function load increase response time to the previous version of this driver. Although not by a lot, it better damps lower frequency load / sleep rate response oscillations. Signed-off-by: Doug Smythies <dsmythies@telus.net> --- drivers/cpufreq/intel_pstate.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)