Top - what does Virtual memory size mean? ...linux/ubuntu

Posted by user42159 on Server Fault See other posts from Server Fault or by user42159
Published on 2010-05-04T15:37:20Z Indexed on 2010/05/04 15:49 UTC
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Filed under:

virtual

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memory

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linux

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ubuntu-9.10

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java

I am running Top to monitor my server performance and 2 of my java processes show virtual memory of upto 800MB-1GB. Is that a bad thing?

What does virtual memory mean? And oh btw, I have swap of 1GB and it shoes 0% used. So I am confused.

Java process = 1 Tomcat server + my own java deamon Server = Ubuntu 9.10 (karmic)

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