[ltp] Excessive power consumption: x220 with Fedora 15

Fri, 26 Aug 2011 18:09:40 +0200

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Well, the parameter threadirqs isn't only for debugging purposes. Let's
say it like this:
if you want a fast realtime kernel and you are not a person who wants an
extremly stable kernel,
you should activate it because of the fact that all the interrupts
within the kernel will be executed as a thread.

See this:
http://www.h-online.com/open/features/Kernel-Log-Coming-in-2-6-39-Part-3-Architecture-and-infrastructure-1238914.html?page=2

But nevermind. I wanted to show you the following params:

pcie_aspm=force i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1

which are usefull for a lower power consumption.

Regards
Patrick

Am 26.08.2011 14:58, schrieb Yves-Alexis Perez:
> On ven., 2011-08-26 at 14:21 +0200, Patrick Siegl wrote:
>> I've wrote something about power consumption on x220.
>>
>> Look at:
>> http://www.thinkwiki.org/wiki/Installing_Gentoo_on_a_ThinkPad_X220#Optimized_grub.cfg
>>
> Afaiui threadirqs is for debugging purpose, you shouldn't enable it by
> default.
>
> Regards,

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    Well, the parameter threadirqs isn't only for debugging purposes.
    Let's say it like this:<br>
    if you want a fast realtime kernel and you are not a person who
    wants an extremly stable kernel,<br>
    you should activate it because of the fact that all the interrupts
    within the kernel will be executed as a thread.<br>
    <br>
    See this:
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    <a
href="http://www.h-online.com/open/features/Kernel-Log-Coming-in-2-6-39-Part-3-Architecture-and-infrastructure-1238914.html?page=2">http://www.h-online.com/open/features/Kernel-Log-Coming-in-2-6-39-Part-3-Architecture-and-infrastructure-1238914.html?page=2</a><br>
    <br>
    But nevermind. I wanted to show you the following params:
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    <pre style="padding-top: 1em; padding-right: 1em; padding-bottom: 1em; padding-left: 1em; border-top-width: 1px; border-right-width: 1px; border-bottom-width: 1px; border-left-width: 1px; border-top-style: dashed; border-right-style: dashed; border-bottom-style: dashed; border-left-style: dashed; border-top-color: rgb(47, 111, 171); border-right-color: rgb(47, 111, 171); border-bottom-color: rgb(47, 111, 171); border-left-color: rgb(47, 111, 171); color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); line-height: 1.1em; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; widows: 2; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; ">pcie_aspm=force i915.i915_enable_rc6=1 i915.i915_enable_fbc=1 i915.lvds_downclock=1</pre>
    which are usefull for a lower power consumption.<br>
    <br>
    Regards<br>
    Patrick<br>
    <br>
    <br>
    Am 26.08.2011 14:58, schrieb Yves-Alexis Perez:
    <blockquote cite="mid:1314363518.23138.29.camel@scapa" type="cite">
      <pre wrap="">On ven., 2011-08-26 at 14:21 +0200, Patrick Siegl wrote:
</pre>
      <blockquote type="cite">
        <pre wrap="">I've wrote something about power consumption on x220.

Look at:
<a class="moz-txt-link-freetext" href="http://www.thinkwiki.org/wiki/Installing_Gentoo_on_a_ThinkPad_X220#Optimized_grub.cfg">http://www.thinkwiki.org/wiki/Installing_Gentoo_on_a_ThinkPad_X220#Optimized_grub.cfg</a>

</pre>
      </blockquote>
      <pre wrap="">Afaiui threadirqs is for debugging purpose, you shouldn't enable it by
default.

Regards,
</pre>
    </blockquote>
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