On Mon, Mar 1, 2010 at 7:44 PM, Mathieu Desnoyers < [email protected]> wrote:
> * hj lee ([email protected]) wrote: > > On Mon, Mar 1, 2010 at 1:49 PM, Mathieu Desnoyers < > > [email protected]> wrote: > > > > > * hj lee ([email protected]) 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
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