Maintained by: NLnet Labs

[Unbound-users] Resource temporarily unavailable and query problem with unbound

Sebastian Nickel - Hetzner Online AG
Fri Nov 12 14:20:14 CET 2010


Hello,
> May i ask what your traffic numbers are on this resolver?
On this resolver we have about 50-60 MBit only DNS Traffic.

Best regards,
Sebastian

Am Mittwoch, den 10.11.2010, 20:47 +0100 schrieb lst_hoe02 at kwsoft.de:
> Zitat von Sebastian Nickel - Hetzner Online AG <sebastian.nickel at hetzner.de>:
> 
> > Hi,
> > I tried "netstat -su" and it showed me many UDP send buffer errors. So I
> > tried to set "net.core.wmem_max" to 8388608 (8m). It did not help.
> >
> > I googled a bit and found some network tuning guides for linux. I ended
> > up with the following sysctl.conf:
> >
> > """
> > net.core.rmem_max=8388608
> > net.core.wmem_max=8388608
> > net.core.rmem_default=262144
> > net.core.wmem_default=262144
> >
> > net.ipv4.udp_mem=8388608 12582912 16777216
> > net.ipv4.udp_rmem_min=16384
> > net.ipv4.udp_wmem_min=16384
> 
> These are new since kernel 2.6.25, i wonder what values they had  
> before they get tunable. I had suspected that the net.core.* values  
> will apply in case the specific net.ipvX.* values are not present.
> 
> May i ask what your traffic numbers are on this resolver?
> 
> Regards
> 
> Andreas
> 
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