[JIRA] (OVIRT-620) Optimize how Jenkins fetchs ovirt-engine from gerrit

[Eyal Edri]

I would say lets give it a try on the ovirt engine jobs
On Jul 5, 2016 3:15 PM, "Nadav Goldin (oVirt JIRA)" <
jira at ovirt-jira.atlassian.net> wrote:

>
>     [
> https://ovirt-jira.atlassian.net/browse/OVIRT-620?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18003#comment-18003
> ]
>
> Nadav Goldin commented on OVIRT-620:
> ------------------------------------
>
> from man git gc:
> {quote}
>        --aggressive
>            Usually git gc runs very quickly while providing good disk
> space utilization and performance. This option will cause git gc to more
> aggressively optimize the repository at the expense of taking much more
> time. The effects of this optimization are persistent, so this option only
> needs to be used occasionally; every few hundred changesets or so.
> {quote}
>
> I am not sure if we have 100s of patchsets/daily, but maybe
> weekly/monthly. Other than that I never used it, so not sure if it could be
> a source of other problems.
>
>
>
>
> > Optimize how Jenkins fetchs ovirt-engine from gerrit
> > ----------------------------------------------------
> >
> >                 Key: OVIRT-620
> >                 URL: https://ovirt-jira.atlassian.net/browse/OVIRT-620
> >             Project: oVirt - virtualization made easy
> >          Issue Type: Sub-task
> >            Reporter: Nadav Goldin
> >            Assignee: infra
> >
> > ovirt-engine git repository is at the time of writing is of size 244MB,
> where ovirt-engine/.git alone takes 160MB.
> > There are two things which might be done:
> > 1. Find a way to optimize ovirt-engine.git/.git size, this needs to be
> explored deeply.
> > 2. Check if it is possible to configure git plugin to not download the
> entire history, although Jenkins attempts to optimize that, it still looks
> like the git plugin is downloading the entire history(this is what a random
> check on the slaves using du ../jenkins/workspace/...../.git -h -s showed)
> > for instance the following command takes only 91Mb:
> > {quote}git clone --depth 1 --branch master {quote}
> > Although this will not solve real network/storage issues, it could help
> reduce those problems and in the overall decrease jobs runtime. As Gerrit
> is still on AWS, this is a considerable amount of traffic for each job we
> might be able to reduce.
>
>
>
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