Re: Rtai Digest, Vol 102, Issue 6

Francescodario Cuzzocrea <[email protected]>
Newsgroups gmane.linux.real-time.rtai
Message-ID <CADnVkj9_ofRjq0Zz7U-JgFjbDQONQTqjOi4a6FKGmuMvMDfBpg@mail.gmail.com>
Ok, I will try to run some tests as soon as I finish my exams !

Il sab 25 giu 2016, 17:02 Sebastian Kuzminsky <[email protected]> ha scritto:

> On 06/25/2016 05:10 AM, Francescodario Cuzzocrea wrote:
> >     However, i'm having trouble running tests in a virtual machine.
> After
> >     several load/test/unload cycles, the machine locks up, with no
> helpful
> >     kernel messages on the console or in dmesg.
> >
> >     I'm *not* trying to use virtual machines for actual realtime
> workloads,
> >     i'm just using it for correctness tests of my realtime application.
> For
> >     actual work i run the application on a bare-metal rtai machine.
> >
> >
> >     I'm using a Vulcano CVS snapshot from 2016 May 12, there have been no
> >     checkins since then.
> >
> >     I'm using Linux 3.18.20, and hal-linux-3.18.20-x86-6.patch.
> >
> >     My kernel config and my rtai configure command is here, along with a
> >     dmesg showing boot & rtai load:
> >     http://highlab.com/~seb/rtai/vm-problem.2016-06-23/
> >
> >     A debian package archive (for Debian Jessie) with the kernel debs and
> >     rtai-modules debs is here:
> >
> >     deb http://highlab.com/~seb/linuxcnc jessie main
> >
> >     The packages to install to see this issue are
> >     linux-image-3.18.0-1-rtai-686-pae (or -amd64) and
> rtai-modules-3.18.0-1.
> >
> >
> >     I'd appreciate any help debugging this.  I'm perfectly willing to run
> >     any tests you suggest.
> >
> >
> > Could you please tell me more about the virtualization enviroment that
> > are you using so I can try to reproduce the hangs on my machines to
> > investigate furter the issue ??
>
> Hi Francescondario, thanks for looking in to this.
>
> My virtualized environment is as follows:
>
> Hypervisor: KVM running on a Debian Jessie (amd64) host.
>
> Virtual Machine: Debian Jessie (amd64) with Linux 3.18 and RTAI 5-test2,
> installed from the debian packages at this apt source:
>
> deb http://highlab.com/~seb/linuxcnc jessie main
>
> I've also tried an i386 virtual machine (same hypervisor, same guest OS,
> kernel & rtai debs at the same apt source), and got the same results.
>
>
> --
> Sebastian Kuzminsky
>

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