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Re: [Qemu-devel] [PATCH v2 0/0] .travis and minor compile fixes


From: Alex Bennée
Subject: Re: [Qemu-devel] [PATCH v2 0/0] .travis and minor compile fixes
Date: Tue, 24 Sep 2013 15:19:29 +0100
User-agent: mu4e 0.9.9.5; emacs 24.3.6

address@hidden writes:

> On Mon, Sep 23, 2013 at 05:07:27PM +0100, address@hidden wrote:
>> Given I found a couple of issues while doing this I think this is
>> useful alongside the existing buildbot efforts. It allows developers
>> to run simple smoke-tests without access to the buildbot
>> infrastructure (but of course needing github/travis access, free for
>> FLOSS projects).
<snip>
> Travis CI allows individual developers to modify the build
> configuration.  This is much more friendly.
>
> Can you explain the limitations of Travis CI?  For example, does it
> start costing money at some point?

It is free to all public repositories. There is a "Pro" service which
allows you to set-up testing on private repos (much like GitHubs model).
The actual code for Travis is open source
(https://github.com/travis-ci/travis-ci) although I'm not aware of
anyone setting up another instance of it. I'm not aware of any plans to
charge open source projects for it's use.

The main limitation is the host build VM is Ubuntu 12.04 LTS. I'm not
sure how much of a limitation this is for the general developer -
Debian/RPM differences aside I would expect most compile failures to be
caught regardless of the host.

Also with a 38-way build matrix the current QEMU is a fairly heavy user
of the shared resource. I suspect running gcc and clang over all builds
is possibly a little over the top ;-)

I don't think this should attempt to replace other CI efforts. I know
that Linaro runs some tests through it's LAVA infrastructure and that's
an area I'm likely to look at expanding. The LAVA infrastructure is more
suited to testing on non-x86 hardware and running system image/kvm
integration tests. Having said that I think it can certainly act as a
good gatekeeper into "master" - if your not passing the Travis tests
then the branch should probably not be merged.

-- 
Alex Bennée



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