[Users] Re: AW: Re: I/O priorities question

[Aleksandar Ivanisevic]

Dennis Benzinger
<dennis.benzinger at hybris.de> writes:

>> You should not start any "worker" process at the HN. The IO at the HN is
>> not subject to any rate limit from the OpenVZ tools as far as i know. The
>> IOPRIO for the container is used as relative value to divide the IO not
>> consumed by the HN itself to the containers.
>> [...]
>
> Would using ionice and nice on the hardware node help in this case?

They should IMO, but in my case they didn't. Or I am missing something.

I have a rsync task on the HN as a poor man's HA, but even ioniced
with idle priority it seem to have come before anything in a container
with IOPRIO=7.