[Devtools] CDK 2.4 and Minishift CDK uses lots of CPU

[Jimmi Dyson]

What is du used for? iirc it's used by cadvisor (embedded in openshift) to
track container disk usage but i thought with devicemapper docker storage,
which i thought should be used in centos/rhel hosts, then it uses dm tools
to track writable layer usage? Maybe there's another use of du I'm not
aware of somewhere?

On 5 Apr 2017 04:42, "Burr Sutter" <bsutter at redhat.com> wrote:

> After lots of testing on the CDK variant, is no longer demonstrating the
> crazy du processes eating all the CPU.  I see one or two du processes spike
> up but not to the point where it is overly problematic.  I did have to turn
> on metrics (which doesn't work anyway) to see the du process via top.
>
> Minishift version: 1.0.0-beta.5
>
> CDK Version: 3.0.0-beta.3
>
>
>
>
> On Tue, Apr 4, 2017 at 10:37 AM, Gerard Braad <gbraad at redhat.com> wrote:
>
>> Hi Burr,
>>
>> On Tue, Apr 4, 2017 at 8:34 PM, Burr Sutter <bsutter at redhat.com> wrote:
>> > Adding devtools back to the thread.
>> > On Tue, Apr 4, 2017 at 2:13 AM, Gerard Braad <gbraad at redhat.com> wrote:
>> >> On Thu, Mar 30, 2017 at 10:47 PM, Burr Sutter <bsutter at redhat.com>
>> wrote:
>> >> > Still eats all the CPU :-)
>> >> > du is the culprit according to top
>> >> @burr when did you notice `du` was the culprit of consuming the CPU as
>> >> a resource? during the `oc cluster up`, or after?
>> > I tested with the upstream version overnight and Helloworld MSA, no
>> problems
>> > Minishift version: 1.0.0-rc.1
>> > it had no problems.
>>
>> great to hear... mostly, Minishift tries to stay out of the way of the
>> actual OpenShift deployment. In that sense, we prepare the environment
>> and allow configuration, and dealing with OpenShift when the
>> deployment happened. From this perspective, I am interested in how 'it
>> seems to use more memory/cpu'. Minishift itself should not cause this
>> directly. But of course, our foundation (the Operating System/ISO)
>> could be a problem. So, if you have any quantifiable metrics, please
>> ;-). It might be helpful to also test different OpenShift versions
>> with a release of the Minishift (CDK) binary+ISOs.
>>
>> Sorry, to make you have to consider a lot of testing... but this
>> information can be valuable to track down the actual root cause. And
>> yes, we have several in recent time which should improve the quality
>> and performance of deploying using Minishift.
>>
>> Looking forward to more feedback...
>>
>>
>> Gerard
>>
>
>
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