On Wed, Feb 2, 2011 at 4:58 PM, mcclnx mcc <mcclnx at yahoo.com.tw> wrote: > 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 ? > What kernel are you using? Is your app 64-bit?