[hobbit] Determining yellow and red level warnings for cpu/load

[Buchan Milne]

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