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Linux Memory utilization? [duplicate]

Actually I use Linux centOS 6.2 version. recently I am assigned to monitor system utilization like memory,cpu,IO,network and all the stuffs. To perform this I have enabled SAR using systat and it ...
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65 views

High CPU usage in RHEL machine

I have RHEL machine that runs postgres-9.1 database. In a particular time, sar output shows as follows: Refer link for snapshot: http://imgur.com/gKcOhOX,vNwTpwC#0 where as %user is high between ...
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255 views

Sar: Free memory statistics (including buffers, cache)

The free commands gives the amount of free memory in two forms: completely free memory (the Mem line) and disposable memory used for caches and buffers (the -/+ buffers/cache line): -bash-3.2$ free ...