Robert, I'm running a minimal install of CentOS7 on x86 hardware. This
system provides authoritative and recursive roles across two separate
BIND views. I also have rbldnsd serving a few zones on this system.
free reports the following after ~24 hrs of uptime:
total used free shared buffers cached
Mem: 10071492 912808 9158684 16880 764 319180
-/+ buffers/cache: 592864 9478628
Swap: 5185532 0 5185532
I, too, find that my CentOS 6 systems are using ~ 2GB of RAM. Memory
usage on C7 appears to be down compared to a similarly configured C6
name server. Hope this provides a reference point.
--Blake
Robert Moskowitz wrote the following on 8/6/2014 10:39 PM:
I have a server that is only running bind 9.8.2 (Centos 6.5). It has
2Gb memory and free reports ~1.7Gb used.
I am looking at replacing this server with an armv7 board running
Redsleeve (until Centos 7 is out and stable for armv7). I have a
choice of boards, one with 1Gb memory ($60) and one with 2Gb memory
($90).
This server servers out my zones and supports the couple handfull of
systems on my net. I would like to eventually get to DNSSEC, but that
is another stalled project.
About the only meaningful difference between the two boards (btw,
Cubieboard2 and Cubietruck) for my needs is the memory. I know more
memory is better, but how much better?
Oh, why the move to arm? Power consumption. ROI for the C2 board is
one year just on power saving.
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