diff options
| author |   Patrick J Volkerding <volkerdi@slackware.com> | 2009-08-26 10:00:38 -0500 |
|---|---|---|
| committer |   Eric Hameleers <alien@slackware.com> | 2018-05-31 22:41:17 +0200 |
| commit | 5a12e7c134274dba706667107d10d231517d3e05 (patch) | |
| tree | 55718d5acb710fde798d9f38d0bbaf594ed4b296 /slackbook/html/process-control-top.html | |
| download | current-slackware-13.0.tar.gz current-slackware-13.0.tar.xz | |
Slackware 13.0slackware-13.0
Wed Aug 26 10:00:38 CDT 2009
Slackware 13.0 x86_64 is released as stable! Thanks to everyone who
helped make this release possible -- see the RELEASE_NOTES for the
credits. The ISOs are off to the replicator. This time it will be a
6 CD-ROM 32-bit set and a dual-sided 32-bit/64-bit x86/x86_64 DVD.
We're taking pre-orders now at store.slackware.com. Please consider
picking up a copy to help support the project. Once again, thanks to
the entire Slackware community for all the help testing and fixing
things and offering suggestions during this development cycle.
As always, have fun and enjoy! -P.
Diffstat (limited to 'slackbook/html/process-control-top.html')
| -rw-r--r-- | slackbook/html/process-control-top.html | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/slackbook/html/process-control-top.html b/slackbook/html/process-control-top.html new file mode 100644 index 000000000..c15f0f4ee --- /dev/null +++ b/slackbook/html/process-control-top.html @@ -0,0 +1,168 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" + "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml"> +<head> +<meta name="generator" content="HTML Tidy, see www.w3.org" /> +<title>top</title> +<meta name="GENERATOR" content="Modular DocBook HTML Stylesheet Version 1.7" /> +<link rel="HOME" title="Slackware Linux Essentials" href="index.html" /> +<link rel="UP" title="Process Control" href="process-control.html" /> +<link rel="PREVIOUS" title="kill" href="process-control-kill.html" /> +<link rel="NEXT" title="Essential System Administration" +href="essential-sysadmin.html" /> +<link rel="STYLESHEET" type="text/css" href="docbook.css" /> +<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" /> +</head> +<body class="SECT1" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#840084" +alink="#0000FF"> +<div class="NAVHEADER"> +<table summary="Header navigation table" width="100%" border="0" cellpadding="0" +cellspacing="0"> +<tr> +<th colspan="3" align="center">Slackware Linux Essentials</th> +</tr> + +<tr> +<td width="10%" align="left" valign="bottom"><a href="process-control-kill.html" +accesskey="P">Prev</a></td> +<td width="80%" align="center" valign="bottom">Chapter 11 Process Control</td> +<td width="10%" align="right" valign="bottom"><a href="essential-sysadmin.html" +accesskey="N">Next</a></td> +</tr> +</table> + +<hr align="LEFT" width="100%" /> +</div> + +<div class="SECT1"> +<h1 class="SECT1"><a id="PROCESS-CONTROL-TOP" name="PROCESS-CONTROL-TOP">11.5 <tt +class="COMMAND">top</tt></a></h1> + +<p>Finally, there's a command you can use to display updating information about the +processes running on the system. This command is called <tt class="COMMAND">top</tt>(1), +and is started like so:</p> + +<table border="0" bgcolor="#E0E0E0" width="100%"> +<tr> +<td> +<pre class="SCREEN"> +<samp class="PROMPT">%</samp> <kbd class="USERINPUT">top</kbd> +</pre> +</td> +</tr> +</table> + +<p>This will display a full screen of information about the processes running on the +system, as well as some overall information about the system. This includes load average, +number of processes, the CPU status, free memory information, and details about processes +including PID, user, priority, CPU and memory usage information, running time, and +program name.</p> + +<table border="0" bgcolor="#E0E0E0" width="100%"> +<tr> +<td> +<pre class="SCREEN"> + 6:47pm up 1 day, 18:01, 1 user, load average: 0.02, 0.07, 0.02 +61 processes: 59 sleeping, 2 running, 0 zombie, 0 stopped +CPU states: 2.8% user, 3.1% system, 0.0% nice, 93.9% idle +Mem: 257992K av, 249672K used, 8320K free, 51628K shrd, 78248K buff +Swap: 32764K av, 136K used, 32628K free, 82600K cached + +<span class="emphasis"><i +class="EMPHASIS">PID USER PRI NI SIZE RSS SHARE STAT LIB %CPU %MEM TIME COMMAND</i></span> + 112 root 12 0 19376 18M 2468 R 0 3.7 7.5 55:53 X +4947 david 15 0 2136 2136 1748 S 0 2.3 0.8 0:00 screenshot +3398 david 7 0 20544 20M 3000 S 0 1.5 7.9 0:14 gimp +4946 root 12 0 1040 1040 836 R 0 1.5 0.4 0:00 top + 121 david 4 0 796 796 644 S 0 1.1 0.3 25:37 wmSMPmon + 115 david 3 0 2180 2180 1452 S 0 0.3 0.8 1:35 wmaker +4948 david 16 0 776 776 648 S 0 0.3 0.3 0:00 xwd + 1 root 1 0 176 176 148 S 0 0.1 0.0 0:13 init + 189 david 1 0 6256 6156 4352 S 0 0.1 2.4 3:16 licq +4734 david 0 0 1164 1164 916 S 0 0.1 0.4 0:00 rxvt + 2 root 0 0 0 0 0 SW 0 0.0 0.0 0:08 kflushd + 3 root 0 0 0 0 0 SW 0 0.0 0.0 0:06 kupdate + 4 root 0 0 0 0 0 SW 0 0.0 0.0 0:00 kpiod + 5 root 0 0 0 0 0 SW 0 0.0 0.0 0:04 kswapd + 31 root 0 0 340 340 248 S 0 0.0 0.1 0:00 kerneld + 51 root 0 0 48 48 32 S 0 0.0 0.0 0:00 dhcpcd + 53 bin 0 0 316 316 236 S 0 0.0 0.1 0:00 rpc.portmap + 57 root 0 0 588 588 488 S 0 0.0 0.2 0:01 syslogd +</pre> +</td> +</tr> +</table> + +<p>It's called <tt class="COMMAND">top</tt> because the most CPU intensive programs will +be listed at the top. An interesting note is that top will be listed first on most +inactive (and some active) systems because of its CPU utilization. However, <tt +class="COMMAND">top</tt> is quite useful for determining what program is misbehaving and +needs to be killed off.</p> + +<p>But suppose you only want a list of your own processes, or the processes of some other +user. The processes you want to see might not be among the most CPU intensive programs +currently running. The <var class="OPTION">-u</var> option allows you to specify a +username or UID and monitor only those processes owned by that UID.</p> + +<table border="0" bgcolor="#E0E0E0" width="100%"> +<tr> +<td> +<pre class="SCREEN"> +<samp class="PROMPT">%</samp> <kbd class="USERINPUT">top -u alan</kbd> + PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND +3622 alan 13 0 11012 10m 6956 S 1.0 2.1 0:03.66 gnome-terminal +3739 alan 13 0 1012 1012 804 R 0.3 0.2 0:00.06 top +3518 alan 9 0 1312 1312 1032 S 0.0 0.3 0:00.09 bash +3529 alan 9 0 984 984 848 S 0.0 0.2 0:00.00 startx +3544 alan 9 0 640 640 568 S 0.0 0.1 0:00.00 xinit +3548 alan 9 0 8324 8320 6044 S 0.0 1.6 0:00.30 gnome-session +3551 alan 9 0 7084 7084 1968 S 0.0 1.4 0:00.50 gconfd-2 +3553 alan 9 0 2232 2232 380 S 0.0 0.4 0:00.05 esd +3555 alan 9 0 2552 2552 1948 S 0.0 0.5 0:00.10 bonobo-activati +3557 alan 9 0 2740 2740 2224 S 0.0 0.5 0:00.05 gnome-smproxy +3559 alan 9 0 6496 6492 5004 S 0.0 1.3 0:00.31 gnome-settings- +3565 alan 9 0 1740 1740 1440 S 0.0 0.3 0:00.28 xscreensaver +3568 alan 9 0 7052 7052 4960 S 0.0 1.4 0:02.28 metacity +3572 alan 9 0 11412 11m 7992 S 0.0 2.2 0:01.58 gnome-panel +3574 alan 9 0 12148 11m 8780 S 0.0 2.4 0:00.64 nautilus +3575 alan 9 0 12148 11m 8780 S 0.0 2.4 0:00.00 nautilus +3576 alan 9 0 12148 11m 8780 S 0.0 2.4 0:00.00 nautilus +</pre> +</td> +</tr> +</table> + +<p>As you can see, I'm currently running <tt class="COMMAND">X</tt>, <tt +class="COMMAND">top</tt>, a <tt class="COMMAND">gnome-terminal</tt> (in which I'm writing +this) and many other X-related processes which take up the most CPU time for me. This is +a good way to monitor how hard your users are working your system.</p> + +<p><tt class="COMMAND">top</tt> also supports monitoring processes by their PID, ignoring +idle and zombied processes, and many other options. The best place to get a handle on +these options is the man page for <tt class="COMMAND">top</tt>.</p> +</div> + +<div class="NAVFOOTER"> +<hr align="LEFT" width="100%" /> +<table summary="Footer navigation table" width="100%" border="0" cellpadding="0" +cellspacing="0"> +<tr> +<td width="33%" align="left" valign="top"><a href="process-control-kill.html" +accesskey="P">Prev</a></td> +<td width="34%" align="center" valign="top"><a href="index.html" +accesskey="H">Home</a></td> +<td width="33%" align="right" valign="top"><a href="essential-sysadmin.html" +accesskey="N">Next</a></td> +</tr> + +<tr> +<td width="33%" align="left" valign="top"><tt class="COMMAND">kill</tt></td> +<td width="34%" align="center" valign="top"><a href="process-control.html" +accesskey="U">Up</a></td> +<td width="33%" align="right" valign="top">Essential System Administration</td> +</tr> +</table> +</div> +</body> +</html> + |