Re: [Xen-devel] Possible memory leak in qemu-dm (qemu-dm swapping 20GB+, adding 2gb+ per day)

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Mon, 2013-11-25 at 13:59 +0100, Niklas Bivald wrote:
> Assuming my Debian 7.0 with xen 4.1.4 uses qemu-xen-traditional then
> yes. Otherwise Iâve observed it in default xen qemu for debian 7.
> Currently all mine (and ilon@xxxxxxxxxxâs) qemu-dm instances keeps
> growing, adding several GB in swap per day. Then dom0 runs out of swap
> and the qemu-dm segfaults and I have to xl destroy it. Then I start
> the domain again and qemu-dm starts growing in swap.

Although I've not run it on qemu you might be able to use valgrind's
support for Xen to help debug this. See:
http://blog.xen.org/index.php/2013/01/18/using-valgrind-to-debug-xen-toolstacks/

It works for debugging xl create and similar, but I didn't try qemu, if
it complains about hypercalls it doesn't understand please let me know
and I'll see about implementing them.

Ian.

> 
> On 25 nov 2013, at 13:40, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx> wrote:
> 
> > Niklas Bivald writes ("Re: [Xen-devel] Possible memory leak in qemu-dm 
> > (qemu-dm swapping 20GB+, adding 2gb+ per day)"):
> >> Can I help in the process of confirming this bug in qemu-xen-traditional? 
> > 
> > Do you mean to say that you have observed qemu-xen-traditional's
> > qemu-dm growing, as described in the bug report ?
> > 
> > Thanks,
> > Ian.
> > 
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxx
> > http://lists.xen.org/xen-devel
> 
> 
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxx
> http://lists.xen.org/xen-devel



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