Kernel configuration options

[Bernardo Innocenti]

John Richard Moser wrote:
> Albert Cahalan wrote:
>> [various people]

>> Since there are no clock ticks when idle, you may as well go
>> with 1000. It's better for music and video.
> 
> Good idea!

We can't enable it without doing some power profiling first.
cjb has been doing lots of work in this area, so I wonder
what he thinks about it.

Many distros compromise on 250Hz, which provides more than
enough precision for humans, while being 4x cheaper than 1000Hz.


>> Those debug symbols are required so that "ps -el" can tell you
>> where a process is stuck. Better:
>>
>> ps -emostat,wchan:22,pid,tid,pcpu,comm,args
> 
> I did not know about this!  :)

Me neither...  "emostat", lol!


>> Also, do not remove hugetlbfs. One could use that for speed
>> in programs that deal with big arrays. I've actually seen the
>> difference in a performance class I took. It can really matter.
> 
> Nods.  That comment was because someone said there were no huge pages on 
> the Geode, which would render hugetlbfs useless.  It's perfectly useful 
> if you have huge pages.

It was me, but I was evidently mistaken.

Still, I wonder if there are actually any real users of the
hugetlb facility in our distro or even in the rest of Fedora.

-- 
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 |___|   Bernardo Innocenti - http://www.codewiz.org/
  \___\  One Laptop Per Child - http://www.laptop.org/