[ovs-discuss] ovs-vswitchd process huge memory consumption

Oleg Bondarev obondarev at mirantis.com
Tue Mar 5 05:07:55 UTC 2019

Hi Ben,

I didn't have a chance to debug the scripts yet, but just in case you
missed my last email with examples of repeatable blocks
and sequences - do you think we still need to analyze further, will the
scripts tell more about the heap?


On Thu, Feb 28, 2019 at 10:14 PM Ben Pfaff <blp at ovn.org> wrote:

> On Tue, Feb 26, 2019 at 01:41:45PM +0400, Oleg Bondarev wrote:
> > Hi,
> >
> > thanks for the scripts, so here's the output for a 24G core dump:
> > https://pastebin.com/hWa3R9Fx
> > there's 271 entries of 4MB - does it seem something we should take a
> closer
> > look at?
> I think that this output really just indicates that the script failed.
> It analyzed a lot of regions but didn't output anything useful.  If it
> had worked properly, it would have told us a lot about data blocks that
> had been allocated and freed.
> The next step would have to be to debug the script.  It definitely
> worked for me before, because I have fixed at least 3 or 4 bugs based on
> it, but it also definitely is a quick hack and not something that I can
> stand behind.  I'm not sure how to debug it at a distance.  It has a
> large comment that describes what it's trying to do.  Maybe that would
> help you, if you want to try to debug it yourself.  I guess it's also
> possible that glibc has changed its malloc implementation; if so, then
> it would probably be necessary to start over and build a new script.
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