[Users] Reduce Load in VZs

[me at free-minds.net]

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?

Thanks!

greetings