[zeromq-dev] Salt ZeroMQ bug on large deployments

Thomas S Hatch thatch45 at gmail.com
Fri Apr 13 04:12:57 CEST 2012


Thanks Jon, I will keep looking then and recommend the latest version

On Thu, Apr 12, 2012 at 12:37 PM, Jon Dyte <jon at totient.co.uk> wrote:

> Thomas
>
> I believe if you upgrade to a later version of zeromq this assertion
> will disappear.
> This assertion used to appear because a pipe used for command
> structures  between threads filled up and in that case it's buffer is
> attempted to be resized which proved flaky.
> In later versions of a single byte was written down the pipe and the
> command passed over memory.
>
>
> https://github.com/zeromq/zeromq2-x/commit/d17cae20c5365fe2695b5e9027d8b91916eb9174
>
>
>
> Jon
>
>
> On 12/04/12 16:56, Thomas S Hatch wrote:
> > Now that Salt is getting deployed in ever larger environments we are
> > running into what appears to be a ZeroMQ bug:
> > https://github.com/saltstack/salt/issues/891
> >
> > The zeromq assertion we are seeing is this:
> >
> > Assertion failed: new_sndbuf > old_sndbuf (mailbox.cpp:183)
> >
> > I think it is associated with the discussion found here:
> > http://comments.gmane.org/gmane.network.zeromq.devel/9887
> >
> > The sysctl modifications seem to help, but some of our users are still
> > seeing it, is there anything else that I should be looking out for here?
> >
> > - Thomas S Hatch
> >
> >
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> > zeromq-dev at lists.zeromq.org
> > http://lists.zeromq.org/mailman/listinfo/zeromq-dev
>
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