LWN.net Logo

But what does BAD->GOOD do?

But what does BAD->GOOD do?

Posted Aug 31, 2012 15:06 UTC (Fri) by spaetz (subscriber, #32870)
In reply to: PowerTOP tops up to 2.1 by wookey
Parent article: PowerTOP tops up to 2.1

My biggest gripe (I am sure I have overseen it), is that while I can make myself happy by transitioning everything from BAD to GOOD until the next reboot, I have no way to find out what this actually does.

E.g. how would you learn that "Turn off NMI watchdog" translates into

"echo 0 > /proc/sys/kernel/nmi_watchdog" (this took me quite some googling and one one of the easier things to find out).

I would appreciate if powertop could tell me what tweak it actually applies when hitting <ENTER>. Teach me to fish, don't just hand me one :-).


(Log in to post comments)

But what does BAD->GOOD do?

Posted Aug 31, 2012 17:14 UTC (Fri) by hummassa (subscriber, #307) [Link]

Version 2.1 does just that.
But I didn't like the system after I transitioned (ok, I did everything together and shouldn't have done that...), it became strange and unresponsive.

But what does BAD->GOOD do?

Posted Sep 1, 2012 2:15 UTC (Sat) by spaetz (subscriber, #32870) [Link]

Thanks that is good to hear. But I just opened Powertop 2.1 and could not find anything like that. Can you enlighten me?

But what does BAD->GOOD do?

Posted Sep 2, 2012 21:09 UTC (Sun) by drago01 (subscriber, #50715) [Link]

From the article:
PowerTOP's other mode is report generation, which you can invoke by running either sudo powertop --html or sudo powertop --csv. [...] A bit more interesting, however, is the HTML output's Tuning tab, which includes the command necessary to change each "Bad" setting

But what does BAD->GOOD do?

Posted Sep 3, 2012 8:42 UTC (Mon) by spaetz (subscriber, #32870) [Link]

DOH, thanks for that! Clearly, I need to brush up my reading capabilities.

Copyright © 2013, Eklektix, Inc.
Comments and public postings are copyrighted by their creators.
Linux is a registered trademark of Linus Torvalds