topic Re: radius&memory in Operating System - Linux

radius&memory

Fadia Almarei — Sun, 06 Feb 2005 03:10:07 GMT

Dear All
i have a redhat9 linux server in this server there is a radius service and oracle data base,the radius write it's data on the oracle applicaion, i have 1GB memory on the server and the free is almost 10MB ,may this lake of memory affect the writing process on my oracle database

Re: radius&memory

Vitaly Karasik_1 — Sun, 06 Feb 2005 03:52:26 GMT

The small size of free memory on linux is OK; you should check swap usage, iostat, top and so on.

See for more:

"Understanding Virtual Memory" [http://www.redhat.com/magazine/001nov04/features/vm/] article from RH Magazine may be a good start point for learning Virtual Memory Management in linux kernel.

"Linux Memory Management or 'Why is there no free RAM?" [http://forums.gentoo.org/viewtopic.php?t=175419] provides VM in linux overview and answers the famous question " 'Why is there no free RAM?"

Re: radius&memory

Fadia Almarei — Sun, 06 Feb 2005 03:55:09 GMT

there is no greate swap usage , so does it affect the radius service writing

Re: radius&memory

Vitaly Karasik_1 — Sun, 06 Feb 2005 04:07:02 GMT

so it's OK. in short, kernel uses free memory for caches/buffers.