Re: kern.ipc.nmbclusters limit reached makes a server go down,

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.con=
f ?

On Tuesday, June 24, 2014 7:08 PM, Eduardo Morras <emorrasg@yahoo.es> wrote:
 =

On Tue, 24 Jun 2014 06:52:19 -0700
Stefan Stere <icetor.is@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 c=
onnection needs one buffer, if you get a connection peak, it can be exhasut=
ed.

> =

> 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 b=
e bigger (131072, 512, f.ex.), don't set an arbitrarly high value because i=
ncreasing both values increase the memory needed by the kernel.

HTH

---=A0  ---
Eduardo Morras <emorrasg@yahoo.es>
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