Jim Perrin wrote:
Last week we noticed that the default scheduler isn't being set properly in CentOS 7. I haven't checked this for CentOS 6, but it might be worth exploring.
The TL;DR is unless you're running CentOS 7 on a laptop or as a virtual guest, you should probably run 'tuned-adm profile throughput-performance'
I wrote up the full details here -> http://jperrin.org/centos/boosting-centos-server-performance/
Thank you very much for the notice! Looking at a couple machines, I found that the automatic choice of profile isn´t what I would want.
Now I wonder how everyone deals with this, i. e. do you set a profile once and never change it, or do you keep changing the profile according to circumstances? Is changing it even advisable, i. e. do all the settings applied through a profile always take effect immediately, or may a reboot be required for some of them?
For example, 'virtual-host' is a good choice during the day when the server is being used while 'balanced' --- or even 'powersave' --- could be used at night when the server is idle.
I made entries in the crontab for this to change the profile at the appropriate times. But is that a good idea?