RE: Linux OS Agent on Virtual vs. Physical

Hey John,
 
Thanks again for that information.
 
Regards,



Gregory R. Mendes
770-317-8593

 
To: [email protected]
Subject: Re: [TME10] Linux OS Agent on Virtual vs. Physical
From: jalvord-r/[email protected]
Date: Tue, 6 Aug 2013 11:45:31 -0700

Virtual storage used is never a good criteria.
With no competition, processes tend to sprawl about and use up lots of
storage that is never referenced and has zero impact on performance. When
other processes are running, the base process storage use will shrink with
no change in performance... up to a point. There is a well known concept
called "working set" where if you reduce available storage below
that value the process starts thrashing and performance gets really bad.



If you want to experiment with this
"unrelated to performance so why are you spending any time on it"
issue, I suggest you use ulimit to control process size and see how low
you can make it without impacting performance.



Regards, 

______________________________________________







John
Alvord

Advisory Engineer

IBM Tivoli Monitoring 6 Platform

Customer Support 

Office: 1-720-396-2788 

Mobile: none 

jalvord-r/[email protected]



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From:      
 Gregory Mendes <[email protected]>

To:      
 "[email protected]"
<[email protected]>, 

Date:      
 08/06/2013 11:23 AM

Subject:    
   [TME10] Linux
OS Agent on Virtual vs. Physical

Sent by:    
   [email protected]








Quick question:

 

The Linux OS agent on a virtual box consumes approx. 1.6 GBs of memory.
 On a physical box the agent consumes approx. 3 GBs of memory.

 

The situations that are distributed to these agents are CPU, MEMORY and
Disk and for each one of them I have 3 severities for CRIT, MINOR and WARNING.
 They run at 30 second sampling intervals.

 

Is there a way to reduce the memory used by the Linux OS Agent?  I
know the answer would most likely be change the sampling interval.

 

Your thoughts and answers are appreciated.

 

Regards,



Gregory R. Mendes

770-317-8593

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