High CPU system usage

Ugo Bellavance ugob at CAMO-ROUTE.COM
Thu Aug 25 20:02:31 IST 2005

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Glenn Steen wrote:
> On 24/08/05, Glenn Steen <glenn.steen at gmail.com> wrote:
> (snip)
>>>>What fs do you use? Perhaps an issue with that...
>>>ext3, might be worthwhile trying without journalling.  We have an UPS
>>>and the server is controlled by Apcupsd.
>>Perhaps. And perhaps without atime updating, if you don't do that already.
> BTW, as one can see from the "new style" listing, you get hit a fair
> bit on "/" too, perhaps something to look at...
> If you decide to revert to ext2, take care with "/" and your initrd.
> But you knew that:-).

I'm wondering what is reading/writing on '/'.

Another thing that makes me wonder is the amount of idle CPU.  I just
logged in as my server had a high load and I saw that even with many
MailScanner processes running and using CPU, there was often significant
Idle %. (10-30%).


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