kern.ipc.nmbclusters limit reached makes a server go down, please help

[perikillo]

On Wed, Jun 25, 2014 at 4:37 AM, Stefan Stere <icetor.is at bitmessage.ro>
wrote:

> Thanks Eduardo
>
> what values do you recommend ? i have 1 gb of ram and rarely use more than
> 20%, as it's a tor box only.
> should i add those values to ensure they enforce at boot in
> /etc/sysctl.conf ?
>
>
> On Tuesday, June 24, 2014 7:08 PM, Eduardo Morras <emorrasg at yahoo.es>
> wrote:
>
>
>
> On Tue, 24 Jun 2014 06:52:19 -0700
> Stefan Stere <icetor.is at bitmessage.ro> wrote:
>
> > Hi,
> >
> > I have a vmware virtual server running FreeBSD 10.0 STABLE
> > The virtual server has 100mbps port.
> >
> > It is running a Tor router, consuming an average of 6-7 TB of monthly
> > traffic. Its the only purpose of the server.
> >
> > Last night it went down, and vmware console log was saying:
> > [zone: Mbuf_cluster] kern.ipc.nmbclusters limit reached
> >
>
> nmbclusters shows/sets the number of network buffers the system has. Each
> connection needs one buffer, if you get a connection peak, it can be
> exhasuted.
>
>
> >
> > I don't know what this means - the traffic of the server is unlimited
> > and nothing is capped in any way. What can I do to fix this? I have
> > read on freebsd wiki that I might need to add some lines to sysctl ?
> > can you please confirm? Thank you in advance.
>
> Show us the values of:
>
> #sysctl kern.ipc.nmbclusters
> kern.ipc.nmbclusters: 25600
>
> #sysctl kern.ipc.somaxconn
> kern.ipc.somaxconn: 128
>
> I put mine as example, but those values are for desktop use. Yours should
> be bigger (131072, 512, f.ex.), don't set an arbitrarly high value because
> increasing both values increase the memory needed by the kernel.
>
> HTH
>
>
> ---   ---
> Eduardo Morras <emorrasg at yahoo.es>
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'Show us the values of:'