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Re: [hobbit] Determining yellow and red level warnings for cpu/load
- To: hobbit (at) hswn.dk
- Subject: Re: [hobbit] Determining yellow and red level warnings for cpu/load
- From: Buchan Milne <bgmilne (at) staff.telkomsa.net>
- Date: Mon, 18 May 2009 10:18:14 +0200
- Cc: Josh Luthman <josh (at) imaginenetworksllc.com>
- References: <961092e10905161822i78ca4d7chcf0719c906113261 (at) mail.gmail.com>
- User-agent: KMail/1.11.2 (Linux/2.6.29.1-desktop-4mnb; KDE/4.2.2; x86_64; ; )
On Sunday 17 May 2009 03:22:43 Josh Luthman wrote:
> Does everyone else just accept the defaults for yellow and red?
No, they are only really applicable to hosts with fewer than 4 cores.
> If not,
> how do you increase it?
We set yellow to about 2-4 times the number of CPU cores, and red to about 4-8
times number of cores (depending on the role).
Unfortunately, load average is not a great measure of how busy the CPU really
is, it would be much better to be able to alarm on vmstat data ...
Regards,
Buchan