Nagios, memory tests, and Linux hosts...

[Justin Pasher]

Andrew Davis wrote:
> So along with disk and CPU tests, I want to test for memory usage. I 
> pulled a perl memory script off Nagios Exchange and was quickly 
> reminded of how linux handles memory... how it leaves whatever has 
> been used previously as "reserved". Thus, a server with 4Gb of RAM may 
> show that 3.95Gb is in use, but in reality, more like 512Mb is in use 
> and the swap usage is under 10%, if used at all, confirming the 
> "actual versus reserved" issue. So how are you guys testing for memory 
> on Linux boxes that flag it as reserved when its not? Are there any 
> scripts on Nagios Exchange for memory testing that are better than others?

I use check_memory.pl. It properly takes buffers and cache into 
consideration (using the "free" command).

http://www.nagiosexchange.org/cgi-bin/page.cgi?g=Detailed%2F1433.html;d=1

--
Justin Pasher

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