Dear Users,
I have a low end server with 1 GB of RAM running GNU/Linux version 3.4.104. I
noticed that after a certain time the swap space is extensively used. This is
normally not an issue but sometimes the system has long response times. I
noticed that "named" is using a lot of memory. So I add the following lines in
the options section of bind.conf
max-cache-size 629145600 ;
cleaning-interval 120 ; // 2 hours
max-cache-ttl 14400 ; // 4 hours
max-ncache-ttl 14400 ; // 4 hours
But this does not help. I thought that bind would not use much more than 600
kB, but this is not true. When I look with "top" I see
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
32470 bind 20 0 982m 842m 2260 S 0.0 86.8 175:55.22 named
As you can see "named" is using 842 MB physical and 982 MB virtual memory. Much
more than configured.
On this server I have bind version
BIND 9.10.3 <id:2799933>
built by make with '--enable-shared' '--enable-static' '--enable-ipv6'
'--with-openssl' 'CC=gcc' 'LDFLAGS=-L/usr/lib/arm-linux-gnueabihf'
compiled by GCC 4.6.3
On a different system ( same kernel version, same HW ) I am using BIND 9.9.5
Here I never noticed this issue.
Is there a major change for memory management in version 9.10 ?
Are there any other methods to reduce memory consumption for bind ?
Kind regards
Hans
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