Hi Fred!
Thanks for the reply. We are using KVM, but we don't run more guest instances
than there are CPU cores available (they're telling me). And we do seem to have
a priority inversion, we're gonna work on that.
In the meantime: is there a way to tell RDImport to just slow down while
importing, so it doesn't use all the bandwith?
And the system manager wonders why RDImport needs a >3 GB file to import a 650
MB file.
I'll keep you updated!
Kind regards,
Peter van Embden
Radio Capelle
The Netherlands
Verstuurd
Van: Fred Gleason
Verzonden: maandag 2 juni 2014 23:13
Aan: rivendell-dev@lists.rivendellaudio.org
On 6/2/14, 13:19 42, Peter van Embden wrote:
> *He says: state that everything is running on one server, virtualized.*
I think you've just fingered the root underlying issue.
Virtualization adds an entire additional layer of complexity. Rivendell
is an inherently real-time application, whereas most hypervisors are
optimized for non-real-time workloads. I strongly suspect that you have
some sort of priority inversion going on between the server and guest
instances.
What kind of hypervisor are you using, and how do you have it tuned?
KVM in particular can become quite flaky if you ask it to run more guest
instances than there are CPU cores available to service them.
Cheers!
|----------------------------------------------------------------------|
| Frederick F. Gleason, Jr. | Chief Developer |
| | Paravel Systems |
|----------------------------------------------------------------------|
| A room without books is like a body without a soul. |
| -- Cicero |
|----------------------------------------------------------------------|
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