Red Hat Bugzilla – Bug 54233
Memory Leak, High RAM Usage
Last modified: 2005-10-31 17:00:50 EST
From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98)
Description of problem:
There seems to be a memory leak problem with Bind/Named ver 9.1.0 under
RedHat 7.1. My pc is a p3 500 with 96 megs of ram. Named is running as a
DNS caching server on my gateway for the local lan.
It has two 10/100 mbit network cards 1 connected to oputs@home and the
other the local lan.
After a fresh boot my gateway uses upto 34-36 megs of RAM, after named has
been running for awhile all 96 megs is being used and so is part of the
128 meg swap... (but only upto 3 megs of the swap if that.)
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1.run named as a DNS caching server.
2.use it for > 12 hours
3.top and look at RAM usage :P~
Actual Results: RAM is totaly used up unnecessarly, top only says that
named is using upto 20 megs or so, but another 40 - 60 megs goes missing
Even if i kill or stop named and reload all the RAM still doesnt come
back, have to reboot to get RAM back.
Instead of misinterpreting the output of "top", better have a look at the second
output line of "free", or run "xosview", and observe how much of your otherwise
unused RAM is used for buffers and cache *temporarily*. And that swap space is
used although the system is not short on memory has been the nature of the 2.4
kernels so far.
I agree with firstname.lastname@example.org's comment - chances are you are misinterpreting
the numbers, especially considering that named passed all our tests and the
named running on bero.org (primary for 93 domains, secondary for 16 others) is
using up just 4 MB RAM after 214 days of uptime.