[Users] Reduce Load in VZs

Tim Small tim at seoss.co.uk
Wed Aug 3 03:11:39 EDT 2011

On 03/08/11 07:55, me at free-minds.net wrote:
> Hello,
> We have on our Server about 17VZs installed and running. Most of them run
> simmilar cron jobs, e.g. apticron and this causes very high load at night.
> Is there any best practise that we can use to reduce the load with these
> jobs? I tought about running these cronjobs from outside with vzctl exec
> (so make a cron at the host and just start the programms manually) and run
> only 1 job at once.
> In general: Is there a best practise to run things in every VZ and not
> produce high load?

I patched the openvz scripts to randomise the start-time of these
scripts across containers.  One of my clients had the same problem - it
showed up quite clearly using the openvzcpu munin plugin which I wrote...

I'll dig out the patch later.  Bug me if I haven't within 24 hours.


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