Maintained by: NLnet Labs

[Unbound-users] No Buffer Space available Unbound 1.4.21

W.C.A. Wijngaards
Tue Feb 11 17:09:27 CET 2014


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi Zongo,

On 02/08/2014 03:34 PM, zongo saiba wrote:
> Greetings to all,
> 
> I have been using unbound combined with NSD for almost two years
> now with no issue. I am still running on OS X 10.9.1 :) Last night
> I had an issue with clients connections to the net being very
> sluggish. This is what I have in the logs:
> 
> 08/02/2014 02:13:36.495 unbound[1030]: [1030:3] notice: sendto
> failed: No buffer space available
> 
> This is the first time after two years of running like a champ. I
> troll the net and found only one ref to this issue
> 
> http://unix.derkeiler.com/Mailing-Lists/FreeBSD/performance/2003-07/0018.html
>
>  Unfortunately, that did not solve the problem for me. Since I am
> really stumped as far as what could be causing the issue, I am
> asking for help.

Well the FreeBSD buffer space improvements would not work on OSX I
guess.   You would need to increase the buffer space available to
unbound on your system.  Or you should decrease the
num-queries-per-thread that would make unbound use less buffer space
and handle less queries at the same time.

There may be better guides out there for increasing network buffer
space on OSX.  Sendto is for the UDP buffers. A search reveals this
link, but I do not know if that would work (the sysctl lines):
http://serverfault.com/questions/102904/how-do-i-increase-the-buffer-size-for-domain-sockets-in-os-x-10-6

Best regards,
   Wouter

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/
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=Ok6C
-----END PGP SIGNATURE-----