Yes, kind of like DOS, apparently the kernel does use this low memory for a process handling area as well as buffer storage for TCP and other traffic. I also found a new command that I didn't know of before call slabtop. it shows you the top items using slab. I haven't totally figured out what exactly slab is yet, but I am reading whatever I can find on it.



On Nov 13, 2007 8:09 AM, JD Austin <jd@twingeckos.com> wrote:
Shawn Badger wrote:
I am having this on going problem with my sever running out of low memory, or that is at least what my support company is saying.
The question I pose the group is how can I tell how much memory is left in the low memory area that the kernel uses and what is using it?

I have been looking at /proc/slabinfo and playing with slabtop, but I have no clues what I am looking at in theses areas. 


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I haven't heard of 'low memory' referenced since the dos days ;)
Are they talking about physical memory versus swap?
Typically in linux I use the 'free' command to see how much memory is available and used.


-- 
JD Austin
Twin Geckos Technology Services LLC
email: jd@twingeckos.com
http://www.twingeckos.com
phone/fax: 480.288.8195

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