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Diffstat (limited to 'gnome2-system-admin-guide/C/performance.xml')
| -rw-r--r-- | gnome2-system-admin-guide/C/performance.xml | 258 |
1 files changed, 52 insertions, 206 deletions
diff --git a/gnome2-system-admin-guide/C/performance.xml b/gnome2-system-admin-guide/C/performance.xml index 0c26d10..21cd41f 100644 --- a/gnome2-system-admin-guide/C/performance.xml +++ b/gnome2-system-admin-guide/C/performance.xml @@ -11,14 +11,14 @@ the GNOME Desktop.</para> <secondary>introduction</secondary> </indexterm> <para>This chapter lists several preferences whose -settings you can change to improve the performance of the desktop environment. -You can use the <command>gconftool-2</command> command to set values for preferences +settings you can change to improve the performance of the GNOME Desktop. You +can use the <command>gconftool-2</command> command to set values for preferences for users. The example commands in this chapter show how to set values in -the user configuration source. </para> +the user configuration source.</para> <para>You can also use the <literal>--direct</literal> and <literal>--config-source</literal> options to set mandatory values or default values for preferences. You can also use the <command>gconftool-2</command> command in a script to set the values of many preferences. For more information on the <command>gconftool-2</command> command and the options that are available with the -command, see <citetitle>Using GConf</citetitle>.</para> +command, see <xref linkend="gconf-0"/>.</para> </sect1> <sect1 id="performance-8"> <title>Reducing CPU Usage</title> @@ -36,7 +36,7 @@ usage</secondary> <secondary>reducing</secondary> </indexterm> <para>This section describes preferences that -you can set to reduce CPU usage by the desktop environment. </para> +you can set to reduce CPU usage by the GNOME Desktop. </para> <sect2 id="performance-3"> <title>To Use Theme Options Which Require Less CPU Resources</title> <indexterm> @@ -51,9 +51,9 @@ you can set to reduce CPU usage by the desktop environment. </para> <para>Some window frame theme options load image files to draw the window frame. Other options use simpler techniques to draw the window frame.</para> - <para>The default window frame option is Crux. Crux loads image files, and -can be slow on systems with limited CPU resources. To reduce CPU usage, use -one of the following window frame options: </para> + <para>The Crux window frame option loads image files, and can be slow on systems +with limited CPU resources. To reduce CPU usage, use one of the following +window frame options: </para> <itemizedlist> <listitem> <para>Atlanta</para> @@ -92,7 +92,8 @@ frame theme option, run the following command: </para> <userinput>gconftool-2 --type string --set /apps/metacity/general/theme Atlanta</userinput> </para> - <para>Alternatively, users can choose <menuchoice><guimenu>Applications</guimenu><guisubmenu>Desktop Preferences</guisubmenu><guimenuitem>Theme</guimenuitem></menuchoice>, then select the appropriate option.</para> + <para>Alternatively, users can use the <application>Theme</application> preference +tool to select the appropriate option.</para> <tip> <para>You can use the <application>Metacity Theme Viewer</application> to measure the performance of a window frame option, and to preview the option. @@ -132,7 +133,8 @@ item. To turn off this feature, run the following command: </para> <userinput>gconftool-2 --type bool --set /desktop/gnome/interface/menus_have_icons false</userinput> </para> - <para>Alternatively, users can choose <menuchoice><guimenu>Applications</guimenu><guisubmenu>Desktop Preferences</guisubmenu><guimenuitem>Menus & Toolbars</guimenuitem></menuchoice>, then deselect the <guilabel>Show icons in menus</guilabel> option.</para> + <para>Alternatively, users can use the <application>Menus & Toolbars</application> +preference tool to deselect the <guilabel>Show icons in menus</guilabel> option.</para> </sect2> <sect2 id="performance-6"> <title>To Reduce CPU Usage by Turning Off the Splash Screen</title> @@ -150,8 +152,9 @@ login. </para> <userinput>gconftool-2 --type bool --set /apps/gnome-session/options/show_splash_screen false</userinput> </para> - <para>Alternatively, users can choose <menuchoice><guimenu>Applications</guimenu><guisubmenu>Desktop Preferences</guisubmenu><guisubmenu>Advanced</guisubmenu><guimenuitem>Sessions</guimenuitem></menuchoice>, -then deselect the <guilabel>Show splash screen on login</guilabel> option.</para> + <para>Alternatively, users can use the <application>Sessions</application> +preference tool to deselect the <guilabel>Show splash screen on login</guilabel> +option.</para> </sect2> <sect2 id="performance-4"> <title>To Reduce CPU Usage by Turning Off Panel Animation</title> @@ -166,8 +169,8 @@ in an animated style. To turn off panel animation, run the following command: </ <userinput>gconftool-2 --type bool --set /apps/panel/global/enable_animations false</userinput> </para> - <para>Alternatively, users can choose <menuchoice><guimenu>Applications</guimenu><guisubmenu>Desktop Preferences</guisubmenu><guisubmenu>Advanced</guisubmenu><guimenuitem>Panel</guimenuitem></menuchoice>, -then deselect the <guilabel>Animation</guilabel> option.</para> + <para>Alternatively, users can use the <application>Panel</application> preference +tool to deselect the <guilabel>Drawer and panel animation</guilabel> option.</para> </sect2> <sect2 id="performance-7"> <title>Improving File Manager Performance</title> @@ -193,24 +196,24 @@ values are described in the following table:</para> <colspec colwidth="65.54*"/> <thead> <row rowsep="1"> - <entry valign="top"> + <entry> <para>Value</para> </entry> - <entry valign="top"> + <entry> <para>Description</para> </entry> </row> </thead> <tbody> <row> - <entry> + <entry valign="top"> <para> <literal>always</literal> </para> </entry> - <entry> - <para>Performs -the action for both local files, and files on other file systems.</para> + <entry valign="top"> + <para>Performs the action for both local files, and files on +other file systems.</para> </entry> </row> <row> @@ -247,10 +250,10 @@ manager. For the fastest performance, set the value of the preferences to <liter <colspec colwidth="56.66*"/> <thead> <row rowsep="1"> - <entry valign="top"> + <entry> <para>Preference</para> </entry> - <entry valign="top"> + <entry> <para>Description</para> </entry> </row> @@ -275,10 +278,10 @@ files, run the following command: </para> the following steps:</para> <orderedlist> <listitem> - <para>Choose <menuchoice><guimenu>Edit</guimenu><guimenuitem>Preferences</guimenuitem></menuchoice> from a file manager window, then choose <guilabel>Performance</guilabel>.</para> + <para>Choose <menuchoice><guimenu>Edit</guimenu><guimenuitem>Preferences</guimenuitem></menuchoice> from a file manager window, then choose <guilabel>Preview</guilabel>.</para> </listitem> <listitem> - <para>Select an option for the <guilabel>Show Text in Icons</guilabel> + <para>Select an option for the <guilabel>Show text in icons</guilabel> preference.</para> </listitem> </orderedlist> @@ -301,11 +304,11 @@ To never show the number of items in folders, run the following command:</para> <para>Alternatively, users can perform the following steps:</para> <orderedlist> <listitem> - <para>Choose <menuchoice><guimenu>Edit</guimenu><guimenuitem>Preferences</guimenuitem></menuchoice> from a file manager window, then choose <guilabel>Performance</guilabel>.</para> + <para>Choose <menuchoice><guimenu>Edit</guimenu><guimenuitem>Preferences</guimenuitem></menuchoice> from a file manager window, then choose <guilabel>Preview</guilabel>.</para> </listitem> <listitem> - <para>Select an option for the <guilabel>Show Number of Items in -Folders</guilabel> preference.</para> + <para>Select an option for the <guilabel>Count number of items</guilabel> +preference.</para> </listitem> </orderedlist> </entry> @@ -327,11 +330,11 @@ To never show thumbnails, run the following command:</para> <para>Alternatively, users can perform the following steps:</para> <orderedlist> <listitem> - <para>Choose <menuchoice><guimenu>Edit</guimenu><guimenuitem>Preferences</guimenuitem></menuchoice> from a file manager window, then choose <guilabel>Performance</guilabel>.</para> + <para>Choose <menuchoice><guimenu>Edit</guimenu><guimenuitem>Preferences</guimenuitem></menuchoice> from a file manager window, then choose <guilabel>Preview</guilabel>.</para> </listitem> <listitem> - <para>Select an option for the <guilabel>Show Thumbnails for Image -Files</guilabel> preference.</para> + <para>Select an option for the <guilabel>Show thumbnails</guilabel> +preference.</para> </listitem> </orderedlist> </entry> @@ -354,10 +357,10 @@ never </userinput> steps:</para> <orderedlist> <listitem> - <para>Choose <menuchoice><guimenu>Edit</guimenu><guimenuitem>Preferences</guimenuitem></menuchoice> from a file manager window, then choose <guilabel>Performance</guilabel>.</para> + <para>Choose <menuchoice><guimenu>Edit</guimenu><guimenuitem>Preferences</guimenuitem></menuchoice> from a file manager window, then choose <guilabel>Preview</guilabel>.</para> </listitem> <listitem> - <para>Select an option for the <guilabel>Preview Sound Files</guilabel> + <para>Select an option for the <guilabel>Preview sound files</guilabel> preference.</para> </listitem> </orderedlist> @@ -382,9 +385,6 @@ turn off the side pane and the toolbar.</para> <userinput>gconftool-2 --type bool --set /apps/nautilus/preferences/start_with_sidebar false</userinput> </para> - <para>Alternatively, users can choose <menuchoice><guimenu>Edit</guimenu><guimenuitem>Preferences</guimenuitem></menuchoice> from a file manager window, -then choose <guilabel>Windows</guilabel>, and then deselect the <guilabel>Display side pane</guilabel> option. The next time that users open a file -manager window, the window does not display a side pane. </para> <para><indexterm><primary>file manager</primary><secondary>toolbar, turning off</secondary></indexterm>To turn off the toolbar, run the following command: </para> <para> @@ -392,9 +392,6 @@ off</secondary></indexterm>To turn off the toolbar, run the following command: < <userinput>gconftool-2 --type bool --set /apps/nautilus/preferences/start_with_toolbar false</userinput> </para> - <para>Alternatively, users can choose <menuchoice><guimenu>Edit</guimenu><guimenuitem>Preferences</guimenuitem></menuchoice> from a file manager window, -then choose <guilabel>Windows</guilabel>, and then deselect the <guilabel>Display toolbar</guilabel> option. The next time that users open a file manager -window, the window does not display a toolbar. </para> <para>You can also turn off the location bar. Users can use the <keycombo><keycap>Ctrl</keycap><keycap>L</keycap></keycombo> keyboard shortcut to display a location bar when required. </para> <para><indexterm><primary>file manager</primary><secondary>location bar, turning @@ -405,9 +402,6 @@ command:</para> <userinput>gconftool-2 --type bool --set /apps/nautilus/preferences/start_with_location_bar false</userinput> </para> - <para>Alternatively, users can choose <menuchoice><guimenu>Edit</guimenu><guimenuitem>Preferences</guimenuitem></menuchoice> from a file manager window, -then choose <guilabel>Windows</guilabel>, and then deselect the <guilabel>Display location bar</guilabel> option. The next time that users open a file -manager window, the window does not display a location bar.</para> </sect3> <sect3 id="performance-11"> <title>To Turn Off the Desktop</title> @@ -422,8 +416,8 @@ off</secondary> </indexterm> <para>The file manager contains a preference that enables users to use <application>Nautilus</application> to manage the desktop. -Users can disable the desktop to improve performance. However, if users disable -the desktop, users cannot do the following:</para> +You can disable the desktop to improve performance. However, if you disable +the desktop, you cannot do the following:</para> <itemizedlist> <listitem> <para>Use the <guimenu>Desktop</guimenu> menu.</para> @@ -433,7 +427,8 @@ the desktop, users cannot do the following:</para> desktop background. </para> </listitem> <listitem> - <para>Use the <guilabel>Home</guilabel> object and the <guilabel>Trash</guilabel> object. The <guilabel>Home</guilabel> object and the <guilabel>Trash</guilabel> object are not displayed on the desktop. </para> + <para>Use the desktop objects, such as <guilabel>Trash</guilabel>. +The desktop objects are not displayed on the desktop. </para> </listitem> </itemizedlist> <para>To disable the desktop, run the following command: </para> @@ -442,9 +437,6 @@ desktop background. </para> <userinput>gconftool-2 --type bool --set /apps/nautilus/preferences/show_desktop false</userinput> </para> - <para>Alternatively, users can choose <menuchoice><guimenu>Edit</guimenu><guimenuitem>Preferences</guimenuitem></menuchoice> from a file manager window. -Users can then choose <guilabel>Desktop & Trash</guilabel>, and then deselect -the <guilabel>Use Nautilus to draw the desktop</guilabel> option. </para> </sect3> </sect2> </sect1> @@ -462,7 +454,7 @@ reducing</primary> <primary>network traffic, reducing</primary> </indexterm> <para>This section describes preferences that you can -set to reduce X Window System network traffic on the desktop environment. </para> +set to reduce X Window System network traffic on the GNOME Desktop. </para> <sect2 id="performance-14"> <title>To Use Theme Options Which Create Less Network Traffic</title> <indexterm> @@ -519,11 +511,11 @@ traffic if the panels are displayed on a remote host. </para> <para>Many modern computer systems support 24-bit color, that is, 16,777,216 colors. However, many users still use systems that support 8-bit color, that is, 256 colors. </para> - <para>The desktop environment uses the <firstterm>websafe color palette</firstterm>. + <para>The GNOME Desktop uses the <firstterm>websafe color palette</firstterm>. This palette is a general-purpose palette of 216 colors, which is designed to optimize the use of color on systems that support 8-bit color. However, -some visual components of the desktop environment are designed for systems -that support 24-bit color.</para> +some visual components of the GNOME Desktop are designed for systems that +support 24-bit color.</para> <para>The following display problems might occur on systems that support 8-bit color:</para> <itemizedlist> @@ -549,7 +541,7 @@ might lose colors, then become unviewable.</para> </listitem> </itemizedlist> <para>The following sections describe how to optimize the appearance of the -desktop environment for systems that support 8-bit color. </para> +GNOME Desktop for systems that support 8-bit color. </para> <sect2 id="performance-20"> <title>To Use Theme Options That Use the Websafe Color Palette</title> <indexterm> @@ -586,18 +578,18 @@ can increase the number of colors used.</para> <secondary>and color usage</secondary> </indexterm> <para>You can turn off the splash screen to make more colors available -for the desktop environment and for applications.</para> +for the GNOME Desktop and for applications.</para> <para>For information on how to turn off the splash screen, see <xref linkend="performance-6"/>.</para> </sect2> <sect2 id="performance-19"> - <title>To Reduce Color Usage by Using a Solid Color for the Desktop Background</title> + <title>To Reduce Color Usage by Using a Solid Color for the Background</title> <indexterm> - <primary>desktop background</primary> + <primary>background</primary> <secondary>using solid color</secondary> </indexterm> - <para>Use a solid color for the desktop background. -Use of a solid color reduces the number of colors used by the desktop environment. </para> - <para>To set a solid color for the desktop background, run the following commands: </para> + <para>Use a solid color for the desktop background. Use of a solid +color reduces the number of colors used by the GNOME Desktop. </para> + <para>To set a solid color for the background, run the following commands: </para> <para> <computeroutput>#</computeroutput> <userinput>gconftool-2 --type string @@ -613,154 +605,8 @@ Use of a solid color reduces the number of colors used by the desktop environmen <userinput>gconftool-2 --type string --set /desktop/gnome/background/primary_color \#<replaceable>hexadecimal-color</replaceable></userinput> </para> - <para>Alternatively, users can choose <menuchoice><guimenu>Applications</guimenu><guisubmenu>Desktop Preferences</guisubmenu><guimenuitem>Background</guimenuitem></menuchoice>, then choose a solid color for the desktop -background.</para> + <para>Alternatively, users can use the <application>Background</application> +preference tool to choose a solid color for the background.</para> </sect2> </sect1> - <sect1 id="performance-23"> - <title>Improving Performance of Help</title> - <indexterm> - <primary>improving</primary> - <secondary>Help performance</secondary> - </indexterm> - <indexterm> - <primary>Help</primary> - <secondary>improving performance</secondary> - </indexterm> - <indexterm> - <primary>performance, improving</primary> - <secondary>Help</secondary> - </indexterm> - <para>The source documents for the -Help are XML files. The XML files are converted to HTML, and the <application>Yelp</application> Help browser displays the HTML. The HTML can be <firstterm>pregenerated</firstterm>, that is, the XML can be converted to HTML before -the Help is used.</para> - <para>Alternatively, the conversion can be performed automatically when a -user calls a Help file. If the conversion is performed when the user calls -the Help file, the conversion has a significant impact on the speed with which -Help documents are displayed.</para> - <para>To avoid performance problems with the Help, pregenerate the HTML so -that the Help browser does not need to do the conversion. Use the <command>yelp-pregenerate</command> command to pregenerate a Help document. The syntax -of the <command>yelp-pregenerate</command> command is as follows: </para> - <cmdsynopsis> - <command>yelp-pregenerate</command> - <group> - <arg choice="plain"> - <option>a</option> - </arg> - <arg choice="opt"> - <option>f</option> - <replaceable>filename</replaceable> - </arg> - </group> - <arg choice="opt"> - <option role="nodash"> - <replaceable>locale</replaceable> - </option> - </arg> - </cmdsynopsis> - <para>The following table describes the options and arguments -for the <command>yelp-pregenerate</command> command:</para> - <informaltable frame="topbot"> - <tgroup cols="2" colsep="0" rowsep="0"> - <colspec colwidth="33.33*"/> - <colspec colwidth="66.67*"/> - <thead> - <row rowsep="1"> - <entry> - <para>Option or Argument</para> - </entry> - <entry> - <para>Description</para> - </entry> - </row> - </thead> - <tbody> - <row> - <entry> - <para> - <literal>-a</literal> - </para> - </entry> - <entry> - <para>Pregenerates -all XML files that are registered in the <application>ScrollKeeper</application> -database. This option is the default option.</para> - </entry> - </row> - <row> - <entry> - <para> - <literal>-f</literal> - </para> - </entry> - <entry> - <para>Pregenerates -only the XML files that you specify in the command.</para> - </entry> - </row> - <row> - <entry> - <para> - <literal>filename</literal> - </para> - </entry> - <entry> - <para>The name of the XML file or XML files that you want to pregenerate.</para> - </entry> - </row> - <row> - <entry> - <para> - <literal>locale</literal> - </para> - </entry> - <entry> - <para>The -locale for which you want to pregenerate the XML files. The default locale -is C, or English.</para> - </entry> - </row> - </tbody> - </tgroup> - </informaltable> - <para>For example, to pregenerate the English version of all XML files in -the file system, run the following command:</para> - <para> - <computeroutput>#</computeroutput> - <userinput>yelp-pregenerate -a</userinput> - </para> - <para>You do not need to specify the locale in this example, as the default -locale is <literal>C</literal>. To pregenerate the Spanish version of the <application>gedit</application> manual, run the following command: </para> - <para> - <computeroutput>#</computeroutput> - <userinput>yelp-pregenerate -f gedit.xml -es</userinput> - </para> - <para>When a user opens a Help file, the Help browser does the following: </para> - <orderedlist> - <listitem> - <para>The Help browser searches for the appropriate HTML file. If -the Help browser finds the HTML file, the Help browser compares the modification -dates of the HTML file and the corresponding XML file. If the HTML file is -more recent than the XML file, the HTML file is displayed.</para> - </listitem> - <listitem> - <para>If the HTML file is older than the XML file, the XML file -is converted to HTML.</para> - </listitem> - <listitem> - <para>If the Help browser does not find a HTML file for a Help document, -the XML file is converted to HTML.</para> - </listitem> - </orderedlist> - <para>In other words, the Help browser displays pregenerated HTML if the pregenerated -HTML file is present. If the pregenerated HTML file is not present, the Help -browser converts the XML file to HTML.</para> - <note> - <para>You might want to pregenerate the Help for any new applications -that you want to add to your desktop environment. If there are severe space -restrictions in your environment, you might choose not to pregenerate the -Help.</para> - </note> - </sect1> </chapter> |