a word of caution about the new default of so-reuseport on FreeBSD

Harry Schmalzbauer freebsd at omnilan.de
Wed Oct 10 17:40:59 UTC 2018


Am 10.10.2018 um 10:53 schrieb Dag-Erling Smørgrav:
> Author: des
> Date: Wed Oct 10 08:53:47 2018
> New Revision: 339278
> URL: https://svnweb.freebsd.org/changeset/base/339278
>
> Log:
>    Upgrade to 1.8.1.
>    
>    Approved by:	re (kib)

Very much appreciated!
Most likely you are aware about the "so-reuseport" topic via Unbound-users.
I didn't follow the diff/issue at all, just wanted to point it out, so 
somebody from the experts team can decide if 1.8.1 is suitable (with the 
1.8.1 defaults) for shipping...

Thanks,
-harry

Am 08.10.2018 um 14:01 schrieb Benno Overeinder via Unbound-users:
> On 21/09/2018 20:27, nusenu via Unbound-users wrote:
>> When upgrading (and before restarting unbound) I explicitly set
>> the new defaults in the conf file to make their value explicit.
>> ( so-reuseport, harden-below-nxdomain, minimal-responses)
>>
>> After I upgraded and restarted unbound all queries were handled by only a single thread
>> even though I have multiple threads enabled in the config, as a result of that the number of
>> queries in the queue skyrocketed.
>>
>> I expected this to be related to so-reuseport and after setting that to 'no',
>> things were back to normal (all threads handled queries again, queue size back to normal).
> Thank you for bringing this to our attention.  so-reuseport behaves
> indeed different for Linux and FreeBSD.  We will schedule a different
> default so-reuseport config setting for FreeBSD in Unbound 1.8.2.  (It
> will not appear in 1.8.1 which will released this week.)
>
> Best regards,
>
> -- Benno


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