Re: [PATCH] unbound: Update to 1.6.0

[Michael Tremer <michael.tremer@ipfire.org>]

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On Fri, 2016-12-16 at 17:39 +0100, Matthias Fischer wrote:
> Hi,
> 
> As far as I can see, it uses one thread per processor as set through the
> init-file.
> 
> Here, the generated 'tuning.conf' contains "num-threads: 2", which is
> ok, the machine has two cores.

We always set that to the number of active processors, yes.

> The question is, what differences would compiling with '--with-pthreads'
> make? This option came to my view, but I don't know if this would make
> anything better.

Try it out them. The number of threads will be the same but it should definitely
use pthreads then which is the fastest implmentation of threads in Linux. There
is a few things outside glibc, but I cannot imagine that unbound is using
anything else but pthreads already.

-Michael

> 
> Best,
> Matthias
> 
> On 16.12.2016 17:13, Michael Tremer wrote:
> > 
> > What else is it using for threading right now?
> > 
> > On Fri, 2016-12-16 at 16:44 +0100, Matthias Fischer wrote:
> > > 
> > > Hi,
> > > 
> > > unbound 1.6.0 - with reverted commit - is running here since a few hours
> > > without seen problems so far - we'll see.
> > > 
> > > One question, being curious:
> > > 
> > > Could it make sense to compile 'unbound' using '--with-pthreads' for
> > > threading support?
> > > 
> > > I got the following in '_build.ipfire.log' right now:
> > > 
> > > ...
> > > checking for the pthreads library -lpthreads... no
> > > checking whether pthreads work without any flags... no
> > > checking whether pthreads work with -Kthread... no
> > > checking whether pthreads work with -kthread... no
> > > checking for the pthreads library -llthread... no
> > > checking whether pthreads work with -pthread... yes
> > > checking for joinable pthread attribute... PTHREAD_CREATE_JOINABLE
> > > checking if more special flags are required for pthreads... no
> > > checking for PTHREAD_PRIO_INHERIT... yes
> > > checking for pthread_spinlock_t... yes
> > > checking for pthread_rwlock_t... yes
> > > checking if -pthread unused during linking... no
> > > ...
> > > 
> > > In this regard, I read
> > > https://www.unbound.net/documentation/howto_optimise.html, but I'm not
> > > so skilled in programming to judge whether this would lead to any
> > > advantages...
> > > 
> > > Best,
> > > Matthias
> > > 
> > > On 16.12.2016 12:59, Michael Tremer wrote:
> > > > 
> > > > 
> > > > Hi,
> > > > 
> > > > that server is not available from the internet. But that you get that IP
> > > > address
> > > > is enough for me. That didn't happen before.
> > > > 
> > > > I will revert that commit and we will see in the testing if this raises
> > > > any
> > > > problems again...
> > > > 
> > > > Best,
> > > > -Michael
> > > > 
> > > > On Fri, 2016-12-16 at 12:47 +0100, Matthias Fischer wrote:
> > > > > 
> > > > > 
> > > > > Hi,
> > > > > 
> > > > > On 16.12.2016 11:28, Michael Tremer wrote:
> > > > > > 
> > > > > > 
> > > > > > 
> > > > > > Did you try reverting this one and test if things like
> > > > > > "pakfirehub01.i.ipfire.org" resolve again?
> > > > > 
> > > > > I just tested after adding "qname-minimisation: yes" and
> > > > > "harden-below-nxdomain: yes" to '/etc/unbound/unbound.conf', but
> > > > > neither
> > > > > "pakfirehub01.i.ipfire.org" nor its ip-address "172.28.1.165"
> > > > > answered.
> > > > > 
> > > > > No connection through browser, ping loss on both = 100%.
> > > > > 
> > > > > With or without, I get the following answer with 'dig':
> > > > > 
> > > > > ...
> > > > > root(a)ipfire: /etc/unbound # dig pakfirehub01.i.ipfire.org
> > > > > 
> > > > > ; <<>> DiG 9.10.3-P4 <<>> pakfirehub01.i.ipfire.org
> > > > > ;; global options: +cmd
> > > > > ;; Got answer:
> > > > > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45016
> > > > > ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL:
> > > > > 1
> > > > > 
> > > > > ;; OPT PSEUDOSECTION:
> > > > > ; EDNS: version: 0, flags:; udp: 4096
> > > > > ;; QUESTION SECTION:
> > > > > ;pakfirehub01.i.ipfire.org.     IN      A
> > > > > 
> > > > > ;; ANSWER SECTION:
> > > > > pakfirehub01.i.ipfire.org. 293  IN      A       172.28.1.165
> > > > > 
> > > > > ;; Query time: 0 msec
> > > > > ;; SERVER: 127.0.0.1#53(127.0.0.1)
> > > > > ;; WHEN: Fri Dec 16 12:33:28 CET 2016
> > > > > ;; MSG SIZE  rcvd: 70
> > > > > ...
> > > > > 
> > > > > Best,
> > > > > Matthias
> > > > > 
> > > > 
> > > 
> > 
> 

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