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Re: Memory staying in cached status -- Possible Memory Leak

On Oct 25 Dave Mitchell did spake thusly:

On Wed, Oct 25, 2006 at 10:31:23AM -0400, Kaplan, Andrew H. wrote:
I am running Fedora Core 5 that was hardened by Bastille Linux on a system with
1.5 GB of RAM. The system functions as an e-mail server running Sendmail along
with MailScanner, SpamAssassin, and ClamAV.

I have noticed over time, via the free -m command, that the amount of cached RAM
is going up. This results in the amount of free memory going down to where there
is almost nothing left.

That's normal behaviour. The OS uses unused RAM to cache disk access. When it
needs to use the RAM for something "proper", it just reclaims it.

As long as the -/+ buffers/cache line shows lots free, you're ok.

The end result has been the system to periodically
hanging, which forces me to reboot the server.

Your fault most likely lies elsewhere.

Somebody told me yesterday that the "free" column should be kept as close to 0 as possible by the linux kernel. Is this true? Coz mine ain't...

Scott van Looy - email:me ethosuk org uk | web:www.ethosuk.org.uk
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