[CentOS] centos 5.5 check memoray usage too high???

on 2/2/2011 1:58 PM mcclnx mcc spake the following:
> We have DELL R900 server with 128GB RAM (CENTOS 5.5)in it.  This server only have one application running and few people use it.
> 
> Every week I ata least get one or two messages from monitor tool mail to me say:
> 
> Message=Memory Utilization is 92.02%, crossed warning (80) or critical (90) threshold. 
> 
> Since server have 128 GB RAM and only 1 application.  I really don't belive that.  Does there has some way can check memory utilitation ?
> 
> Thanks.
Linux has a habit of using memory to store buffers and speed disk re-accesses.
As soon as an application needs that memory, it will be flushed if dirty and
released. Memory unused is memory not needed.