Why do the process' memory shares not add up to the total used memory displayed in top?

Posted on 2009-04-28
Last Modified: 2013-11-10

When I run "ps aux" the memory share of each process doesn't add up to the used memory displayed in "top". Why is this?

From the code snippet, ps aux would indicate the memory is under 25% used, yet top indicates it's about 50%.

I am running Centos 4.7.

Question by:tomp_gl
    1 Comment
    LVL 40

    Accepted Solution

    memory is also used by the system kernel

    Featured Post

    How to run any project with ease

    Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
    - Combine task lists, docs, spreadsheets, and chat in one
    - View and edit from mobile/offline
    - Cut down on emails

    Join & Write a Comment

    Using 'screen' for session sharing, The Simple Edition Step 1: user starts session with command: screen Step 2: other user (logged in with same user account) connects with command: screen -x Done. Both users are connected to the same CLI sessio…
    System overheating may become a serious problem if not taken care of at the proper time. I am writing this article because I faced a similar problem. Intro All electronic devices produce heat, but computers are a special case - the processors bo…
    Learn how to get help with Linux/Unix bash shell commands. Use help to read help documents for built in bash shell commands.: Use man to interface with the online reference manuals for shell commands.: Use man to search man pages for unknown command…
    Connecting to an Amazon Linux EC2 Instance from Windows Using PuTTY.

    729 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    17 Experts available now in Live!

    Get 1:1 Help Now