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Post subject: Powertop Kernel Recommendations
 Posted: Aug 11, 2007 - 03:14 AM
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Joined: Dec 01, 2006
Posts: 751
Status: Offline
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As most of you know, there has been efforts to make the linux kernel more power efficient. Intel wrote an application called powertop to find what applications are waking up your cpu the most when it is supposed to be idle.
They have a site at linuxpowertop.org and have recommendations on what kernel options should be changed. So, of course, I was wondering if some of these that are not already configured could be enabled/disabled.
source: http://linuxpowertop.org/faq.php
What kernel options should I enable inside the kernel?
CONFIG_NO_HZ
CONFIG_HIGH_RES_TIMERS
CONFIG_HPET_TIMER
CONFIG_CPU_FREQ_GOV_ONDEMAND
CONFIG_USB_SUSPEND
CONFIG_SND_AC97_POWER_SAVE
CONFIG_TIMER_STATS #this is to allow powertop to make statistics on what applications are causing the most wake ups and what not
What kernel options should I disable inside the kernel?
CONFIG_IRQBALANCE
CONFIG_ACPI_DEBUG
Some of these are also suggestions while running the application. |
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