OS "hiccups"

[Robin Laing]

Smith, Herb wrote:
> All,
> 
> I'm running Fedora 10 and have been very happy with it.  Within the last
> week, however, the OS seems to be experiencing momentary "hangups" of
> some sort where all activity stops for 10 or 15 seconds.  The cursor
> won't move, web pages won't scroll, etc.  This occurs not only in
> Firefox, but generally regardless of what I'm doing. 
> 
> Does anyone have any idea what could be causing this?
> 
> TIA,
> 
> Herb
> 

You have not given an details to even suggest something.  "top" is your 
tool to start with.  "ps" is another.  iostat and dstat are other tools 
that can help.

http://linuxpoison.blogspot.com/2008/11/linux-system-monitoring-using-dstat.html

I am having similar issues but I now know that mine are due to IO and 
D-states.  I want to get more ram to see if that helps but I also know 
that running dmraid and luks is putting a load on the system.  I need a 
faster system in the future.

There is also this article that was on this list a few weeks ago.

http://rudd-o.com/en/linux-and-free-software/tales-from-responsivenessland-why-linux-feels-slow-and-how-to-fix-that

I do see these slight freezes in Firefox, even on my faster 64bit 
machine at work.


-- 
Robin Laing