Bind hang out when named reach to 5-600 Mb

[Stacey Jonathan Marshall - Solaris Software]

On 07/09/10 07:36, khanh rua wrote:
> Can u tell me how to do this ?
> If you enable query log, you might be able to see if it's actually
> serving queries at that time.
>    
> I mean "it hang" is named process is still running but it cannot 
> respond any lookup query. CPU is almost at low rate 5-6 % or lower.  
> It's both hang with single thread or multithread.
> datasize is 9999m
>  max-cache-size is 2000m;
> These are versions of bind i tried :
> bash-3.00# file /usr/sbin/named
> /usr/sbin/named:        ELF 32-bit MSB executable SPARC Version 1, 
> dynamically linked, stripped
> bash-3.00# which named
> /usr/sbin/named
> bash-3.00# file /opt/SUNWbind9.6/sbin/named
> /opt/SUNWbind9.6/sbin/named:    ELF 64-bit MSB executable SPARCV9 
> Version 1, dynamically linked, not stripped
> bash-3.00# file /usr/sbin/bind
> bind-9.7.1b1/ bind9.7.0P1/
> bash-3.00# file /usr/sbin/bind-9.7.1b1/named
> /usr/sbin/bind-9.7.1b1/named:   ELF 32-bit MSB executable SPARC 
> Version 1, dynamically linked, not stripped

running 'named -V' is the best may to show version and configure options.
>
> In my circumstance, i can try installing anything as long as it can 
> fix this bug. I saw on sunsolve there 's a patch for bind 119783-15. 
> Don't know is it useful to fix this bug?

No, that patch provides BIND 9.6.1-P3 with no specific changes.

Could you collect some lock statistics using plockstat(1M)? i.e.:

	# plockstat -e 300 -p `pgrep ^named`


The -e 300 causes it to collect statistics for 5 minutes - experiment a 
little and feed back what is reported.


>
> Mb i will check with other version of bind. Hope this can help.
> *From:* Fajar A. Nugraha <fajar at fajar.net>
> *To:* khanh rua <duonghoahoc_k49cd at yahoo.com>
> *Cc:* bind-users at lists.isc.org
> *Sent:* Thu, July 8, 2010 5:10:02 PM
> *Subject:* Re: Bind hang out when named reach to 5-600 Mb
>
> On Thu, Jul 8, 2010 at 4:30 PM, khanh rua <duonghoahoc_k49cd at yahoo.com 
> <mailto:duonghoahoc_k49cd at yahoo.com>> wrote:
> > Hi,
> >
> > I install bind as a cache server on Solaris 10, Sun Sparc T5140. It has
> > problem, bind always hang out when named reach to 5-600 Mb ('prstat' 
> check).
>
> How did you determine that it "hang"?
> If you enable query log, you might be able to see if it's actually
> serving queries at that time.
>
> Also, how is the cpu and disk usage at that time (I'm trying to see if
> you have cpu or disk as bottleneck?
>
> My guess is that:
> - one of your CPU thread is at 100% usage
> - named is busy serving queries alreadt, so that the new query you
> issued does not get processed in a timely manner.
>
> > I have several servers and all have this problem even when i install 
> bind in
> > zone or try with a 64bit version.  T5140's a powerful server but 
> bind can't
> > make use of its power.
>
> IMHO, it's not really named-specific problem. The thing is Sun/Oracle
> T-series processors doesn't perform well with single thread loads. And
> (last time I check anyway) even though bind can make use of multi
> processor/threads, single thread performance still matters a lot.
>
> So you'd probably get much better performance when running named with
> say ... a generic x86 server/PC with Intel Xeon/Core i-series.
>
> -- 
> Fajar
>
>
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> https://lists.isc.org/mailman/listinfo/bind-users


-- 
--Stacey

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