the following seems to be killing our
plans to use a pythonscript to fetch the list of vms:
This comes from the users list:
Am 17.12.2013 15:04, schrieb Sander Grendelman:> Fetching the list of
vms through the API with the python SDK
takes several seconds with 100% cpu usage in the python script.
When I look at the engine log there is only one (fast) fetch from
the API. The rest of the time is spent in the SDK processing a
relatively small bit of XML data (only 26 VMs in my environment).
This seems an excessive amount of CPU for processing ~6KB of XML.
I've included some sample code  and output .
Attached is the cProfile output for this call and a visualization.
 ~6,5 seconds on an oVirt VM with 1 vcpu on older hardware,
~3,5 seconds on a fast physical machine with an i5 cpu.
Am 17.12.2013 15:31, schrieb Michael Pasternak:>
This is a known issue caused by generateDS python bindings we use,
it's extremely slow in python<->xml marshalling, and unable to recognize
cyclic referencing in the objects,
i'm planning to upgrade in 3.4 from 2.9a to 2.12, if it won't help, we may
consider other options.
This is no option for us at all:
We can't wait for a possible fix in 3.4
(which maybe even does not fix it).
Additionally we will have much higher amounts of vms to query.
Mit freundlichen Grüßen / Regards
Mittwald CM Service GmbH & Co. KG
Königsberger Straße 6
Geschäftsführer: Robert Meyer
St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhausen
Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen