On 11/24/2015 01:40 PM, John Hunter wrote:
Hi,
On Tue, Nov 24, 2015 at 5:18 PM, Oved Ourfali <oourfali@redhat.com <mailto:oourfali@redhat.com>> wrote:
Hi
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 login requests https://bugzilla.redhat.com/1255814
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 problem.
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 <<. import cProfile 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 environment.
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.
Assume that I have two functions to implement, one is to list all the vms belong to the user, and the other is to retrieve one vm's virt-viewer connection file, as far as I can see, I have to write two python scripts and import the ovirtsdk.api in both
On Tue, Nov 24, 2015 at 9:15 PM, Juan Hernández <jhernand@redhat.com> wrote: scripts, each script has to take the 3 seconds :( How can I run the "from ... import ..." just once ?
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. https://bugzilla.redhat.com/1221238
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@gmail.com <mailto:zhjwpku@gmail.com>> wrote:
Hi guys,
I am using the ovirt-engine-sdk-python to communicate with the ovirt-engine, 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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