SpamAssassin 3 memory usage

[Sander Holthaus - Orange XL <in...@orangexl.com>]

I've noticed that my current memory consumption of spamd (3.x), when using a
number of custom rule-sets such as SARE, is relatively high (~50MB according
to ps). When running with a large number of children, this would consume
quite a large portion of memory.
Or am I wrong here, and is a portion of that 50MB per child actually shared?
 
Kind Regards,
Sander Holthaus

Re: SpamAssassin 3 memory usage

[Matt Kettler <mk...@comcast.net>]

At 07:24 AM 2/3/2005, Sander Holthaus - Orange XL wrote:
>I've noticed that my current memory consumption of spamd (3.x), when using a
>number of custom rule-sets such as SARE, is relatively high (~50MB according
>to ps). When running with a large number of children, this would consume
>quite a large portion of memory.
>Or am I wrong here, and is a portion of that 50MB per child actually shared?

That's up to your OS.. Much of the 50MB is sharable, but you'll need an OS 
that does "read only, copy-on-update" (aka RCU) type forking.

Newer versions of Linux do this, and you can generally tell by looking at 
PS.. Most RCU type OSes will one spamd child will be large, and the others 
will be less than half the size. Some more oddball variants wind up always 
reporting the parent size, even if the pages are shared, so you might need 
to check the math by adding them up and comparing to the total mem 
availability in top.