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I'm using atop to monitor disks usage, network and other load parameters. my problem is, atop will show only the top 3 disks. How can i display all of them? couldn't find anything from man or any docs on the internet.

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Well, I'm seeing all 4 of my disks (and the raid array they are in) in atop. Are you sure all of your disks are connected, I guess? – ssmy Mar 20 '13 at 15:59
yes i'm sure. i guess you are checking not on production server. when you have lots of process, the bottom windows goes up and shrinks the upper window, that's why it shows max 3 disks – teslasimus Mar 20 '13 at 20:30
I have plenty of processes, but the process list doesn't start until the upper window is fully shown: What version of atop? – ssmy Mar 20 '13 at 20:33
i have this message at start Number of variable resources limited to fit number of lines Version: 1.26 - 2010/11/17 13:42:37 < > – teslasimus Mar 20 '13 at 20:39
You must have too many things there for the number of lines. Try writing to a file (atop 1 1 >file) and see if everything you want to see is in there. – ssmy Mar 20 '13 at 21:56
atop -PDSK <interval>

This gives machine parseable output of the following fields, per disk: name, number of milliseconds spent for I/O, number of reads issued, number of sectors transferred for reads, number of writes issued, and number of sectors transferred for write

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The command top can display CPU usage, Memory usage, Swap Memory, Cache Size, Buffer Size, Process PID, User, Commands

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Try glances CLI curses based monitoring tool instead. It shows all disks. To install glances run:

sudo apt-get install glances
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