mmap on Linux

Mark Santcroos mark at NLnetLabs.nl
Fri Jun 29 16:58:55 CEST 2007


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Anand Buddhdev wrote:
> This question is mainly directed to the developers. I am building an RPM 
> package of NSD 2.3.7 for use on CentOS 4.5. I notice that one of the 
> options available during the configure phase is "--enable-mmap". The 
> release notes briefly mention it as being useful on Solaris, but don't 
> talk about any other OS. Since it is not enabled by default, I'd like to 
> ask whether there is any benefit to be had on enabling it on CentOS.

It has to do with memory overcommit. A usefull reference is:
http://developers.sun.com/solaris/articles/subprocess/subprocess.html#overcom

To answer your question, you don't need it on Linux.

Mark

- --
Mark Santcroos
NLnet Labs
http://www.nlnetlabs.nl/
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