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| author | arjan <arjan@arjan-desktop.localdomain> | 2010-09-18 00:03:42 -0700 |
|---|---|---|
| committer | arjan <arjan@arjan-desktop.localdomain> | 2010-09-18 00:03:42 -0700 |
| commit | 8cda6705bc7ad0e5fc987d61b1f1a64620bdf5cd (patch) | |
| tree | 3a68cb93b2351bd3244b925bce5b38dd2d99f824 /devices/thinkpad-fan.cpp | |
| parent | 25f33b3443b3553b5c10ffcda05cffde4bcbf808 (diff) | |
| download | powertop-8cda6705bc7ad0e5fc987d61b1f1a64620bdf5cd.tar.gz | |
cache the index in various places -> huge win in performance already
Diffstat (limited to 'devices/thinkpad-fan.cpp')
| -rw-r--r-- | devices/thinkpad-fan.cpp | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/devices/thinkpad-fan.cpp b/devices/thinkpad-fan.cpp index 286cfe0..a4fa39a 100644 --- a/devices/thinkpad-fan.cpp +++ b/devices/thinkpad-fan.cpp @@ -66,6 +66,13 @@ double thinkpad_fan::power_usage(struct result_bundle *result, struct parameter_ double factor; double utilization; + static int fan_index = 0, fansqr_index = 0; + + if (!fan_index) + fan_index = param_index["thinkpad-fan"]; + if (!fansqr_index) + fansqr_index = param_index["thinkpad-fan-sqr"]; + power = 0; utilization = get_result_value("thinkpad-fan", result); @@ -74,10 +81,10 @@ double thinkpad_fan::power_usage(struct result_bundle *result, struct parameter_ utilization = 0; - factor = get_parameter_value("thinkpad-fan-sqr", bundle); + factor = get_parameter_value(fansqr_index, bundle); power += factor * pow(utilization / 100.0, 2); - factor = get_parameter_value("thinkpad-fan", bundle); + factor = get_parameter_value(fan_index, bundle); power -= utilization * factor / 100.0; if (power <= 0.0) |