Operation cancelled Error

Ben benjo11111 at gmail.com
Thu May 24 11:43:19 UTC 2012


Hello,

Any reply please...

Regards,
Ben
> Hi,
>
> I am doing load testing for bind as caching dns server.Fro that i 
> configure one machine as client and one as server.I setup bind as 
> caching dns server and set recursive-clients 30000.
>
> While doing load test from client machine via resperf, i got many 
> errors in named.run file which shows,I checked that time there is no 
> cpu high usage / memory high usage on server and clients.Why server is 
> not permitted operation.
>
> 23-May-2012 23:30:12.085 error (operation canceled) resolving 
> 'www.thethreadexchange.com/AAAA/IN': 192.33.14.30#53
> 23-May-2012 23:30:12.085 error (operation canceled) resolving 
> 'c2.nstld.net/A/IN': 192.42.93.31#53
> 23-May-2012 23:30:12.085 error (operation canceled) resolving 
> 'nothirst.com/A/IN': 192.54.112.30#53
> 23-May-2012 23:30:12.085 error (operation canceled) resolving 
> '172.153.42.186.in-addr.arpa/PTR/IN': 199.212.0.53#53
> 23-May-2012 23:30:12.085 error (operation canceled) resolving 
> 'xxy.com/MX/IN': 192.12.94.30#53
> 23-May-2012 23:30:12.086 error (operation canceled) resolving 
> '192.140.138.187.in-addr.arpa/PTR/IN': 193.0.9.3#53
> 23-May-2012 23:30:12.086 error (operation canceled) resolving 
> 'mail.n-u-c.ru/A/IN': 193.232.128.6#53
> 23-May-2012 23:30:12.086 error (operation canceled) resolving 
> 'www.gayteacher.net/A/IN': 108.59.10.134#53
> 23-May-2012 23:30:12.086 error (operation canceled) resolving 
> 'www.forever-christies.com/A/IN': 192.12.94.30#53
> 23-May-2012 23:30:12.086 error (operation canceled) resolving 
> '166.98.232.189.in-addr.arpa/PTR/IN': 200.3.13.10#53
> 23-May-2012 23:30:12.086 error (operation canceled) resolving 
> '89.140.112.200.in-addr.arpa/PTR/IN': 202.12.28.140#53
> 23-May-2012 23:30:12.086 error (operation canceled) resolving 
> '9z772drlt.89ys/A/IN': 192.228.79.201#53
> 23-May-2012 23:30:12.087 error (operation canceled) resolving 
> 'video327.myfreecams.com/A/IN': 192.26.92.30#53
> 23-May-2012 23:30:12.087 error (operation canceled) resolving 
> 'ns1.thny.bbc.co.uk/A/IN': 194.83.244.131#53
> 23-May-2012 23:30:12.087 error (operation canceled) resolving 
> '6.246.26.190.in-addr.arpa/PTR/IN': 200.3.13.10#53
> 23-May-2012 23:30:12.087 error (operation canceled) resolving 
> 'instagram.com/A/IN': 192.54.112.30#53
> 23-May-2012 23:30:12.087 error (operation canceled) resolving 
> 'acriacao.com/A/IN': 192.12.94.30#53
> 23-May-2012 23:30:12.087 error (operation canceled) resolving 
> 'technologie.gazeta.pl/A/IN': 192.203.230.10#53
>
> rndc status shows,
>
>
> version: 9.7.3-P3-RedHat-9.7.3-8.P3.el6_2.2
> CPUs found: 8
> worker threads: 8
> number of zones: 19
> debug level: 0
> xfers running: 0
> xfers deferred: 0
> soa queries in progress: 0
> query logging is ON
> recursive clients: 6400/29900/30000
> tcp clients: 0/100
> server is up and running
>
>
> i constanly watch rndc status command , and at recuresive-clients tab 
> , first values increases maximum up to 6000-6500, why it is not going 
> to maximum which i define 30000..?
> rndc status shows 8 worker process, when i checked  by pgrep named , 
> it shows only single instance.so does it need to show 8 instance or ?
> Currently we use bind as caching name server , so why rndc status 
> shows number of zones 19..?
>
> Kindly guide me to resolve above confusion.
>
> Bind build info:
>  named -V
> BIND 9.7.3-P3-RedHat-9.7.3-8.P3.el6_2.2 built with 
> '--build=x86_64-redhat-linux-gnu' '--host=x86_64-redhat-linux-gnu' 
> '--target=x86_64-redhat-linux-gnu' '--program-prefix=' '--prefix=/usr' 
> '--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin' 
> '--sysconfdir=/etc' '--datadir=/usr/share' '--includedir=/usr/include' 
> '--libdir=/usr/lib64' '--libexecdir=/usr/libexec' 
> '--sharedstatedir=/var/lib' '--mandir=/usr/share/man' 
> '--infodir=/usr/share/info' '--with-libtool' '--localstatedir=/var' 
> '--enable-threads' '--enable-ipv6' '--with-pic' '--disable-static' 
> '--disable-openssl-version-check' '--with-dlz-ldap=yes' 
> '--with-dlz-postgres=yes' '--with-dlz-mysql=yes' 
> '--with-dlz-filesystem=yes' '--with-gssapi=yes' '--disable-isc-spnego' 
> '--with-docbook-xsl=/usr/share/sgml/docbook/xsl-stylesheets' 
> 'build_alias=x86_64-redhat-linux-gnu' 
> 'host_alias=x86_64-redhat-linux-gnu' 
> 'target_alias=x86_64-redhat-linux-gnu' 'CFLAGS= -O2 -g -pipe -Wall 
> -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector 
> --param=ssp-buffer-size=4 -m64 -mtune=generic' 'CPPFLAGS= -DDIG_SIGCHASE'
>
>
> From client machine :
>
> /usr/local/nom/bin/resperf -s 10.115.1.231 -d 
> /root/dnsperf_test_queries.tsv
> DNS Resolution Performance Testing Tool
> Nominum Version 2.0.0.0
>
> [Status] Command line: resperf -s 10.115.1.231 -d 
> /root/dnsperf_test_queries.tsv
> [Status] Sending
> [Status] Reached 65536 outstanding queries
> [Status] Waiting for more responses
> [Status] Testing complete
>
> Statistics:
>
>   Queries sent:         74038
>   Queries completed:    74038
>   Queries lost:         0
>   Run time (s):         100.000000
>   Maximum throughput:   2838.000000 qps
>   Lost at that point:   24.32%
>
>
> what are the configuration parameter required to  increase QPS for 
> server? I mean any fine tuning in bind / OS side, please suggest us.
>
>
> Best Regards,
> Ben
>
>
> Regards,
> Ben




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