On Tue, Jan 17, 2017 at 6:03 PM, Juan Hernández <[email protected]> wrote:
> On 01/17/2017 04:59 PM, Nicolas Ecarnot wrote: > > Le 17/01/2017 à 16:26, Juan Hernández a écrit : > >> On 01/17/2017 03:56 PM, Nicolas Ecarnot wrote: > >>> Hello, > >>> > >>> On a 3.6.5 DC, I'm trying to figure out how many VMs there are, using > >>> two methods : > >>> > >>> _*Python SDK :*_ > >>> > >>> *from ovirtsdk.xml import params > >>> from ovirtsdk.api import API > >>> api = API(url='https://engine.fqdn/ovirt-engine/api', > >>> username='admin@internal', password='xxx', insecure=True) > >>> print len(api.vms.list())* > >>> > >>> time ./getMvm.py > >>> 62 > >>> > >>> real 0m23.016s > >>> user 0m22.288s > >>> sys 0m0.054s > >>> > >>> > >>> _*REST :*_ > >>> > >>> *time curl -H "Version: 3" -H "Prefer: persistent-auth" -H "Filter: > >>> false" -H "Accept: application/xml" -H "Content-Type: application/xml" > >>> -k -u 'admin@internal:xxx' https://***engine.fqdn*/ovirt- > engine/api/vms* > >>> > >>> (Then grep or anything that would get the values from the xml > returned.) > >>> > >>> real 0m0.383s > >>> user 0m0.036s > >>> sys 0m0.038s > >>> > >>> > >>> I am a beginner in both methods, but I would prefer play with Python. > >>> I'm very surprised to have to wait more than 20 seconds to get an > >>> answer. > >>> Looking at the engine log, I see that the authentication part is > >>> finished after say 3 seconds, then 20 seconds with absolutely no error > >>> message, no CPU load, no RAM burst, no nothing. > >>> On the SPM, exactly triple null nothing nada niet void is obviously > >>> explaining such a delay. > >>> > >>> I'm wondering if this super hyper sluggishness is somewhat related to > >>> the GUI global slowness I'm experiencing like other users since we left > >>> 3.2.x, and I would love that some oVirt ninja uses the comparison above > >>> to tell what parts in oVirt is used or not that could explain such a > >>> difference (database, access to SPM, LVM, network access, whatever...) > >>> > >>> -- > >>> Nicolas ECARNOT > >>> > >> > >> The performance problem is inside version 3 of the Python SDK. That is > >> one of the reasons that we had to do a new version of the Python SDK for > >> version 4 of the engine. If you are using version 4 of the engine then > >> you can use version 4 of the SDK: > >> > >> https://github.com/oVirt/ovirt-engine-sdk/tree/master/sdk > >> > >> https://github.com/oVirt/ovirt-engine-sdk/blob/master/ > sdk/examples/list_vms.py > >> > >> > >> It should be much faster. Would be nice if you can repeat your test and > >> report the results. > >> > > > > Hello Juan, > > > > Indeed, you were right. I tried the same from a recent server with a > > recent SDK, and I let you have a look : > > > > # rpm -q python-ovirt-engine-sdk4 > > python-ovirt-engine-sdk4-4.0.1-1.el7.centos.x86_64 > > > > # time ./getMvm.py > > 62 > > > > real 0m1.004s > > user 0m0.234s > > sys 0m0.031s > > > > And repeating the same test gives a very decent average, so thank you. > > > > Twenty times faster, approx, good to know. Thanks. By the way, if you > want even better performance, then make sure to disable debug and enable > compression: > > connection = sdk.Connection( > ... > debug=False, > compress=True, > ) > Shouldn't it be the default? Y. > > _______________________________________________ > Users mailing list > [email protected] > http://lists.ovirt.org/mailman/listinfo/users >
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