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Bind9 DNS on Solaris 10 x4270 & CPU usage


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  #1  
Old August 5th, 2011, 07:32 AM
parisph parisph is offline
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Bind9 DNS on Solaris 10 x4270 & CPU usage
I have configured a Bind9 DNS on a X4270 machine with Solaris10

I am excuting some repformance tests with DNSPERF tool and maximun CPU usage is 23%. I have seen with
prstat -L -p PID
that named process usses only 2 of the 8 available CPU at the same time although threads for all CPUs exist.

Any idea why this happens and how can I change it? I want to reach at least 70%.
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  #2  
Old September 14th, 2011, 03:22 PM
bizman69 bizman69 is offline
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Quote:
Originally Posted by parisph
I have configured a Bind9 DNS on a X4270 machine with Solaris10

I am excuting some repformance tests with DNSPERF tool and maximun CPU usage is 23%. I have seen with
prstat -L -p PID
that named process usses only 2 of the 8 available CPU at the same time although threads for all CPUs exist.

Any idea why this happens and how can I change it? I want to reach at least 70%.


I recently upgraded our servers OS to solaris 10. Now the DNS process runs away and quits after using up all the swap space.
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Old September 17th, 2011, 10:55 AM
inky2k inky2k is offline
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Hello, may you please attach your named.conf and your zone file, something is terribly wrong. It's insane usage of CPU.
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  #4  
Old September 17th, 2011, 12:03 PM
parisph parisph is offline
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Finally I found a work around. By entering logging option in named.conf to save querries in a new file and not using syslogd and /var/adm/messages problem was solved. Limitation was connected somehow with solaris 10 and syslog.
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Old September 20th, 2011, 09:20 AM
bizman69 bizman69 is offline
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Quote:
Originally Posted by parisph
Finally I found a work around. By entering logging option in named.conf to save querries in a new file and not using syslogd and /var/adm/messages problem was solved. Limitation was connected somehow with solaris 10 and syslog.


Can you post your fix? Thanks.
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  #6  
Old September 23rd, 2011, 05:00 AM
parisph parisph is offline
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logging for DNS
logging {
channel query.log {
file "query.log" size 200m;
print-time yes;
};
category queries { query.log; };
};
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  #7  
Old September 23rd, 2011, 11:27 AM
bizman69 bizman69 is offline
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Quote:
Originally Posted by parisph
logging {
channel query.log {
file "query.log" size 200m;
print-time yes;
};
category queries { query.log; };
};


Awesome. Thanks.
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