problem the debian bind9 named process 113%cpu usage issue(

Kernels & Hardware, configuring network, installing services

problem the debian bind9 named process 113%cpu usage issue(

Postby m0o0hammad » 2017-09-12 03:32

hello everyone
please help

Linux KSH-DNS 3.16.0-4-686-pae #1 SMP Debian 3.16.43-2+deb8u3 (2017-08-15) i686 GNU/Linux
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top:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4162 root 20 0 810684 622308 3904 S 113.1 7.5 8938:15 named
219 root 20 0 20576 14996 14888 S 12.3 0.2 2591:35 systemd-journal


dnstop eth0:
Queries: 3200 new, 11711 total

Sources Count % cum%
--------------- --------- ------ ------
(ip public) 7403 63.2 63.2
(ip public) 171 1.5 64.7
5.223.250.223 161 1.4 66.0
5.223.200.87 128 1.1 67.1
217.219.212.162 125 1.1 68.2
5.223.208.161 61 0.5 68.7
5.220.83.7 54 0.5 69.2
5.223.227.140 53 0.5 69.6


cpuinfo:
Intel(R) Xeon(R) CPU E5420 @ 2.50GHz (8core)




taskset -p 4162:
pid 4162's current affinity mask: ff

What can I do to reduce CPU?
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Re: problem the debian bind9 named process 113%cpu usage iss

Postby debiman » 2017-09-12 06:07

does it do that 24h a day? if not, please elaborate.

there's no 'named' process on my debian jessie machine, nor can i find it with apt search. what is it?
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Re: problem the debian bind9 named process 113%cpu usage iss

Postby m0o0hammad » 2017-09-12 09:30

debiman wrote:does it do that 24h a day? if not, please elaborate.

there's no 'named' process on my debian jessie machine, nor can i find it with apt search. what is it?


It does not happen when traffic increases

Queries: 3274 new, 43374 total


named=blind9=dns server
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Re: problem the debian bind9 named process 113%cpu usage iss

Postby GarryRicketson » 2017-09-12 09:52

Are you sure ?
Code: Select all
named=blind9=dns server

Maybe it should be
Code: Select all
bind9

instead of "blind9" .
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Re: problem the debian bind9 named process 113%cpu usage iss

Postby m0o0hammad » 2017-09-13 02:55

yes of course
bind9
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Re: problem the debian bind9 named process 113%cpu usage iss

Postby debiman » 2017-09-14 17:51

i'm not sure how your short & cryptic replies are supposed to be helping here.

m0o0hammad wrote:What can I do to reduce CPU?

you have to find out what named does, why it eats so much cpu, then correct the behavior.
assuming you really need named, you have to fix it.
if you don't, you just remove it from your services or make sure it does not run.

given the lack of info provided, i cannot be less cryptic than you.

of course you could also hire me, then i would come over and could really look over your shoulder.
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