[ltt-dev] Is it possible to use LTTng on XEN Hypervisor?

[hj lee]

On Mon, Mar 1, 2010 at 7:44 PM, Mathieu Desnoyers <
compudj at krystal.dyndns.org> wrote:

> * hj lee (kerdosa at gmail.com) wrote:
> > On Mon, Mar 1, 2010 at 1:49 PM, Mathieu Desnoyers <
> > compudj at krystal.dyndns.org> wrote:
> >
> > > * hj lee (kerdosa at gmail.com) wrote:
> > > > Hi,
> > > >
> > > > I using XEN, and like to try LTTng on XEN to debug some performance
> > > issue.
> > > > Is LTTng ported to XEN? Is there any instruction how to use LTTng on
> XEN?
> > >
> > > A very old version of LTTng has been ported to Xen. It's not even
> > > referenced on the lttng website anymore, but see this thread for
> > > information:
> > >
> > >
> http://lists.xensource.com/archives/html/xen-devel/2007-06/msg00900.html
> > >
> > > The mercurial repository still exists.
> > >
> > > Good luck,
> > >
> > > Mathieu
> > >
> > >
> > Thank you for the link. We are using the latest XEN 3.3.1. Can I ask why
> you
> > don't maintain or update LTTng for XEN?
>
> It would double the effort of maintaining the LTTng tree through newer
> Linux kernel versions, requiring to follow the Xen tree too. Also, every
> change to the LTTng API, trace format, etc, would have to be done for
> Xen too. We are currently doing something similar with UST (for
> user-space tracing): this requires a separate maintainer for the UST
> tree, who pull changes from the kernel LTTng periodically.
>
> So in the end, it does not seem to be worth the effort. On my side at
> least.
>
> I understand you. Is it OK for me to do this work and publish on public
website like google project or sourceforge? Once I make it working, then I
am going to produce a LTTng patch for every XEN major release.

Thanks
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.casi.polymtl.ca/pipermail/lttng-dev/attachments/20100302/aeab1e90/attachment-0002.htm>