Possible memory leak on BIND 9.10.1-P1 running on FreeBSD 10.1-RELEASE-p4 - part 2
Daniel Ryslink
daniel.ryslink at dialtelecom.cz
Tue Jan 27 16:11:11 UTC 2015
Hello,
I am sorry, but since I got under pressure to stabilize our main
resolver operation, I had to downgrade to BIND 9.9.6 which effectively
solved the problem (i.e. even with max-cache-size set to 0 [unlimited],
the amount of memory allocated by named reaches certain maximum and
remains stable indefinitely).
The only info I can provide is the archive containing rndc stats from
the 9.10 period:
http://www.mujweb.cz/nakamura/dns/leakinfo.tgz
Sorry about that.
--
S pozdravem,
Daniel Ryšlink
System Administrator
Dial Telecom a. s.
Křižíkova 36a/237
186 00 Praha 3, Česká Republika
Tel.:+420.226204627
daniel.ryslink at dialtelecom.cz
-----------------------------------------------
www.dialtelecom.cz
Dial Telecom, a.s.
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-----------------------------------------------
On 01/27/2015 11:36 AM, J. Thomsen wrote:
> On Tue, 27 Jan 2015 11:16:04 +0530,Mukund Sivaraman <muks at isc.org> wrote:
>
>
>> Meanwhile, please can you enable statistics-channels in named.conf and
>> send us a dump of the XML statistics along with process sizes reported
>> by ps when named grows very large?
>>
> I run the small script below every 5 minutes in a cron job
>
> The result can be seen at http://ns4.jth.net/bind
>
> There is no extreme memory leak running since Jan. 7th, but memory usage is slowly increasing from
> 70 MB till now 161 MB.
> In any case using 161 MB RAM serving 623 small authoritative zones and rarely any recursive lookups
> seems to me wildly out of proportion.
> Disk space of zone files is 5,4 MB.
> The developers of BIND ought to revisit the memory usage of BIND.
>
>
> #!/bin/sh
> # extracts the memory usage of named into a file
>
> touch /var/www/html/jth.net/bind/bind_rss_history.txt
> RSS=`ps -aux | awk '/^named.*named/{print $6 " " $5}'`
> NOW=`date "+%Y-%m-%d %H:%M:%S"`
> echo "$NOW $RSS" | awk '{printf "%10s%10s RSS %11sKb VSZ %11sKb\n",$1,$2,$3,$4}' >>
> /var/www/html/jth.net/bind/bind_rss_history.txt
> GET "http://127.0.0.1:8053" >/var/www/html/jth.net/bind/s`date +%F-%H-%M.xml`
> exit 0
>
> In named.conf the configuration is
>
>
> statistics-channels {
> inet * port 8053 allow { verytrusted; };
> inet :: port 8053 allow { verytrusted; };
> };
>
> options {
>
> zone-statistics yes;
> };
>
> - Jørgen Thomsen
>
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