On 11/24/2015 01:40 PM, John Hunter wrote:
On Tue, Nov 24, 2015 at 5:18 PM, Oved Ourfali <oourfali(a)redhat.com
I discussed it with Juan (cc-ed).
There used to be a bug in the JDBC authenticion extension that
artificially delayed RESTAPI responses by 5 seconds:
brute force prevention login delay should not be applied to successful
That matches the description of the issue, but in theory it has been
fixed. I would suggest him to check that he is using the right version
of the extension.
I did not use the extension ovirt-engine-extension-aaa-jdbc, and I don't
think this bug matches my problem, because even there is only one line
in the python script, it still cost like 3 seconds, I don't think this is a
reasonable time as when I import other package, it cost almost no time.
Can you explain why this import line costs so much time?
If you are using 3.6 then you are using ovirt-engine-extension-aaa-jdbc,
as it is enabled by default, but looks like it isn't related to your
That line takes a long time to execute because it has to process two
large Python modules: the "params" module that contains a class per each
type used by the API (393 classes) and the "brokers" module that
contains a class per each resource used by the API (358 classes). That
makes a total of 751 classes. In my environment it takes 0.9 seconds,
approx. You may want to use the python profile in your environment and
share the results:
$ cat > profile.py <<.
cProfile.run("from ovirtsdk.api import API")
$ python profile.py
I won't be surprised to see this taking those 3 seconds in a slower
But even if this takes those 3 seconds it shouldn't be a big problem,
because you shouldn't be running that "from ... import ..." line
frequently. Your program should do this once only, when it starts.
In addition we also know that retrieving large lists of objects with the
SDK is slow:
[RFE][performance] - generate large scale list running to slow.
We don't have a solution for that yet.
CC-ing Juan in case you have additional questions.
On Mon, Nov 23, 2015 at 11:27 AM, John Hunter <zhjwpku(a)gmail.com
I am using the ovirt-engine-sdk-python to communicate with the
I am ok to list the vms but the processing time is too long,
like 4.5 seconds,
and this line:
from ovirtsdk.api import API
take almost 3 seconds.
This seems a little bit longer than I expected it to be, so I am
asking is there
a quicker way to communicate with the ovirt-engine?
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