9:56 a.m.
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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
--------------C6E76C7C8FD43701D7C93416
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<html>
<head>
<meta http-equiv="content-type" content="text/html;
charset=utf-8">
</head>
<body bgcolor="#FFFFFF" text="#000000">
Hello,<br>
<br>
On a 3.6.5 DC, I'm trying to figure out how many VMs there are,
using two methods :<br>
<br>
<u><b><font size="+1">Python SDK
:</font></b></u><br>
<br>
<b><font face="Courier New, Courier, monospace">from
ovirtsdk.xml
import params<br>
from ovirtsdk.api import API <br>
api = API(url='<a class="moz-txt-link-freetext"
href="https://engine.fqdn/ovirt-engine/api">https://engine.fqdn/ovirt-engine/api</a>',
username='admin@internal', password='xxx',
insecure=True)<br>
print len(api.vms.list())</font></b><br>
<br>
time ./getMvm.py <br>
62<br>
<br>
real 0m23.016s<br>
user 0m22.288s<br>
sys 0m0.054s<br>
<br>
<br>
<u><b><font size="+1">REST
:</font></b></u><br>
<br>
<b><font face="Courier New, Courier, monospace">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' <a class="moz-txt-link-freetext"
href="https://">https://</a></font></b><b><font
face="Courier New, Courier, monospace"><b><font
face="Courier
New, Courier,
monospace">engine.fqdn</font></b>/ovirt-engine/api/vms</font></b><br>
<br>
(Then grep or anything that would get the values from the xml
returned.)<br>
<br>
real 0m0.383s<br>
user 0m0.036s<br>
sys 0m0.038s<br>
<br>
<br>
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.<br>
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.<br>
On the SPM, exactly triple null nothing nada niet void is obviously
explaining such a delay.<br>
<br>
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...)<br>
<br>
-- <br>
Nicolas ECARNOT<br>
</body>
</html>
--------------C6E76C7C8FD43701D7C93416--
10:26 a.m.
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_v...
It should be much faster. Would be nice if you can repeat your test and
report the results.
10:59 a.m.
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_v...
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.
--
Nicolas ECARNOT
11:03 a.m.
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_v...
>
>
> 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,
)
2:42 p.m.
On Tue, Jan 17, 2017 at 6:03 PM, Juan Hernández <jhernand(a)redhat.com> 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.
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Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
3:43 a.m.
On 01/17/2017 08:42 PM, Yaniv Kaul wrote:
On Tue, Jan 17, 2017 at 6:03 PM, Juan Hernández <jhernand(a)redhat.com
<mailto:jhernand@redhat.com>> 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
<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/tree/master/sdk>
>>
>>
https://github.com/oVirt/ovirt-engine-sdk/blob/master/sdk/examples/list_v...
<https://github.com/oVirt/ovirt-engine-sdk/blob/master/sdk/examples/list_v...
>>
>>
>> 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.
Debug is disabled by default, but in is enabled in almost all the
examples. As I suggested an example I also suggest to makes sure to
disable it.
Compression is enabled by default in version 4.1 of the SDK, which isn't
released yet. In version 4.0 it needs to be enabled explicitly.
2673
days inactive
2674
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5 comments
3 participants
participants (3)
-
Juan Hernández -
Nicolas Ecarnot -
Yaniv Kaul