[Qa-jenkins-dev] Bug#875990: Bug#875990: reproducible: i/o issues with profitbricks-build2-i386 since stretch upgrade

[Holger Levsen]

Hi Vagrant,

thanks for filling this bug and thus properly documenting what we had discovered,
discussed and lost on IRC already…

On Sat, Sep 16, 2017 at 07:48:42PM -0700, Vagrant Cascadian wrote:
> My *hunch* is that build2 and build12 are running a PAE kernel with more
> than 8GB of ram, and affected by this kernel bug (introduced in linux
> ~4.2, possibly):
>   https://bugzilla.kernel.org/show_bug.cgi?id=196157
>   https://bugs.launchpad.net/ubuntu/+source/linux-hwe/+bug/1698118
 
indeed!

> Reducing the ram of the affected builders to 8GB and having more PAE
> builders with lighter workloads might be a workaround that would get
> better performance... while still testing 32/64-bit kernel
> variation.

we lack the diskspace to do so.
 
> Alternately, switching to only amd64 kernels might also fix the issue,
> though wouldn't test 32/64-bit kernel variations.

indeed.

> Running a linux 4.1 kernel from snapshot.debian.org might be another way
> to test the issue, even if not running long-term.

yeah.

another option is to just wait. :/


-- 
cheers,
	Holger
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