Re: [Autotest] [PATCH] KVM-test: Add two scripts to disable services for perf tests

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On Wed, Sep 7, 2011 at 3:07 AM, Amos Kong <akong@xxxxxxxxxx> wrote:
> System services on guest and host take uncertain resource, it effects
> the perf results. We can use the below two scripts to disable some
> services of host and guest.
>
> stop_serivices_perf.sh is used to stop the running serivices.
> off_service_perf.sh is used to off services when host starts up.

Hi Amos, thanks! I've been thinking about those scripts, let me
summarize my thoughts:

 * If we are going to make this using scripts, then we should try as
much as possible to be distro agnostic.
 * We could detect services present on guest first before trying to
disable them, ie, instead of just issuing a service koan stop, verify
if there's a /etc/init.d/koan first.
 * Have you considered doing this env setup using shell commands typed
on an ssh session, such as

 session = vm.wait_for_login()
 session.cmd('service auditd stop')

Rather than a script? It's one less script to maintain under the
scripts/ directory.

 * Your approach is a blacklist of services that will be turned off.
What if we used a 'whitelist' approach and kept a list of the
fundamental services needed and turn off *everything else*?

Please let me know what you think about this. I'm not applying this for now.
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