Rob wrote:
Hi,
This is on FreeBSD 4-Stable.
I have set up a caching name server. About its cached data base,
I found out:
1) data base is kept in memory
2) the maximum memory is adjustable in named.conf, for example:
datasize 20M;
But without specifying the datasize, how much memory is used by
default. The named.conf man page is rather cryptic:
datasize
The maximum amount of data memory the server may use.
The default value is default.
Elsewhere, I found that this "default" means a system dependent value.
In any case, how can I find out what is the memory used by my server
on my system? Is there a 'ndc <arg>' command for this?
This is important when I consider to increase the memory limit.
I'm adding additional comments to my own email.
When I do not have the caching name server running, I do this:
# swapinfo ; ndc start ; swapinfo
Device 512-blocks Used Avail Capacity Type
/dev/ad0s1b 99312 3560 95752 4% Interleaved
new pid is 1714
Device 512-blocks Used Avail Capacity Type
/dev/ad0s1b 99312 3560 95752 4% Interleaved
No change at all in memory usage. If named keeps its cache in memory,
why do I not see any changes of available swap space when starting named?
Or does named claim memory on the fly, as it is caching?
If so, how can I find out what is the maximum it can claim on my machine?
Thanks,
Rob.
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