Poor performance on Juju local with lxc containers.

[David Cheney]

Excellent news. I'm glad you got to the bottom of it.

Do you know why php5-xdebug was installed the lxc container, but not
your vagrant vm ?

On Wed, Jul 9, 2014 at 5:24 PM, Sebastian <sebas5384 at gmail.com> wrote:
> ha!! gotcha!! finally I know why, the php5-xdebug was installed and enabled
> by default, didn't know was such a big impact of performance.
>
> So this is going to the charm's configuration, so can be an option.
>
> Happy Sebas now.
>
> 2014-07-09 2:40 GMT-03:00 Sebastian <sebas5384 at gmail.com>:
>
>> Hey there!
>>
>> After I did the Drupal charm, part of my plan was that the developers now
>> can use the juju-local with lxc containers to deploy every project
>> environment using bundles.
>>
>> But! we notice a BIG difference of performance in the containers, so we
>> run a PHP benchmarking script:
>>
>> Host (vbox):
>> vagrant at vagrant-ubuntu-trusty-64:~$ php bench.php
>> --------------------------------------
>> test_math                 : 3.190 sec.
>> test_stringmanipulation   : 2.859 sec.
>> test_loops                : 1.702 sec.
>> test_ifelse               : 1.319 sec.
>> --------------------------------------
>> Total time:               : 9.07 sec.
>>
>> Lxc container (into the vbox):
>> ubuntu at vagrant-local-machine-4:~$ php bench.php
>> --------------------------------------
>> test_math                 : 37.062 sec.
>> test_stringmanipulation   : 30.826 sec.
>> test_loops                : 5.749 sec.
>> test_ifelse               : 6.149 sec.
>> --------------------------------------
>> Total time:               : 79.786 sec.
>>
>>
>> As you can see, the containers created by Juju took 70 seconds more than
>> the host.
>> The versions of the php where the same, and this was also tested in bare
>> metal, to ensure that the virtualization of the host wasn't the issue.
>>
>> We understand how this impact the implementation of Juju as a complete
>> solution for devs and ops. Is not everyone that can buy a super computer to
>> virtualize each charm, in his local notebook. So that's why I'm here,
>> telling our story.
>>
>> Maybe this is an issue that belongs to the LXC group, but I thought
>> interesting to share this.
>>
>> If someone can do the same benchmarkings and share the results, or any
>> help to make things better, please!! it's more than welcome.
>>
>> Cheers!,
>> Sebas.
>>
>
>
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