<div>
That's <br />
<i>The task's share of the elapsed CPU time since the last &nbsp;screen<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; update, expressed as a percentage of total CPU time. &nbsp;<br />
In a true SMP environment, if 'Irix mode' is Off, &nbsp;top &nbsp;will &nbsp;operate &nbsp;in<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; ´Solaris &nbsp;mode' where a task's cpu usage will be divided by the<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; total number of CPUs. &nbsp;You toggle 'Irix/Solaris' modes with the<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 'I' interactive command. </i><br />
(from manpage) <br />
wmp<br />
&nbsp;<br />

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<div>
Hi!<br />
<br />
Remember to run the 'top' command as root if you want to see all processes from all users.<br />
<br />
Regards, Tobias
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<div>
install sysstat to find more about CPU usage. If you are using SMP (Multiple CPU) system, use mpstat command to display the utilization of each CPU individually. You can display CPU activity, with sar.
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<div>
Are you sure the AV scan &nbsp;it's not doing &nbsp;a scheduled background scan or updating his engine...?
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<div class="content wysiwyg-content">
whats the meaning of %CPU?<br />
<br />
&nbsp; PID USER &nbsp; &nbsp; &nbsp;PR &nbsp;NI &nbsp;VIRT &nbsp;RES &nbsp;SHR S &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; %CPU %MEM &nbsp; &nbsp;TIME+ &nbsp;COMMAND<br />
31550 drweb &nbsp; &nbsp; 25 &nbsp; 0 &nbsp;352m 301m &nbsp;736 R &nbsp; &nbsp; &nbsp; 99.6 14.9 &nbsp; 5:08.07 drwebd.real<br />
&nbsp;8380 popuser &nbsp; 16 &nbsp; 0 &nbsp;7176 1172 &nbsp;932 S &nbsp; &nbsp; &nbsp; &nbsp; 4.8 &nbsp;0.1 &nbsp; 0:00.14 imapd<br />
&nbsp;8321 root &nbsp; &nbsp; &nbsp;15 &nbsp; 0 &nbsp;2336 1088 &nbsp;796 R &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0.4 &nbsp;0.1 &nbsp; 0:00.08 top<br />
&nbsp;8379 root &nbsp; &nbsp; &nbsp;15 &nbsp; 0 &nbsp;4952 1832 1528 S &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0.4 &nbsp;0.1 &nbsp; 0:00.05 couriertls<br />
14764 root &nbsp; &nbsp; &nbsp;15 &nbsp; 0 &nbsp;2336 1008 &nbsp;720 S &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;0.4 &nbsp;0.0 &nbsp; 2:56.85 top<br />
24297 root &nbsp; &nbsp; &nbsp;15 &nbsp; 0 &nbsp;5944 &nbsp;588 &nbsp;536 S &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 0.4 &nbsp;0.0 &nbsp; 1:31.86 couriertcp<br />
<br />
thanks
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</div>


whats the meaning of %CPU?

  PID USER      PR  NI  VIRT  RES  SHR S           %CPU %MEM    TIME+  COMMAND
31550 drweb     25   0  352m 301m  736 R       99.6 14.9   5:08.07 drwebd.real
 8380 popuser   16   0  7176 1172  932 S         4.8  0.1   0:00.14 imapd
 8321 root      15   0  2336 1088  796 R             0.4  0.1   0:00.08 top
 8379 root      15   0  4952 1832 1528 S            0.4  0.1   0:00.05 couriertls
14764 root      15   0  2336 1008  720 S            0.4  0.0   2:56.85 top
24297 root      15   0  5944  588  536 S             0.4  0.0   1:31.86 couriertcp

thanks

About command top

A Linux distribution is an operating system made as a software collection based on the Linux kernel and, often, on a package management system and are available for a variety of systems. A typical Linux distribution comprises a Linux kernel, GNU tools and libraries, additional software, documentation, a window system (the most common being the X Window System), a window manager, and a desktop environment. Most Linux systems are open-source software made available both as compiled binaries and in source code form, allowing modifications to the original software. Over three hundred distributions are in active development, including commercially backed distributions (such as Fedora, openSUSE and Ubuntu) and community-driven distributions (such as Debian, Slackware, Gentoo and Arch Linux).

Linux Distributions

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