Changes for page Performance

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...	...	@@ -4,6 +4,29 @@
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5	5	Here are some tips to increase XWiki's performance.
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	7	+= Slow random number generation on UNIX =
	8	+
	9	+The library used for random number generation in Sun's JVM relies on /dev/random by default for UNIX platforms.
	10	+
	11	+Although /dev/random is more secure, it's possible te use /dev/urandom if the default JVM configuration instead.
	12	+
	13	+To determine if your operating system exhibits this behavior, try displaying a portion of the file from a shell prompt:
	14	+
	15	+head -n 1 /dev/random
	16	+
	17	+If the command returns immediately, you can use /dev/random as the default generator for SUN's JVM. If the command does not return immediately, use these steps to configure the JVM to use /dev/urandom:
	18	+
	19	+1. Open the $JAVA_HOME/jre/lib/security/java.security file in a text editor.
	20	+2. Change the line:
	21	+{{code language="properties"}}
	22	+ securerandom.source=file:/dev/random
	23	+{{/code}}
	24	+ to read:
	25	+{{code language="properties"}}
	26	+ securerandom.source=file:/dev/urandom
	27	+{{/code}}
	28	+3. Save your change and exit the text editor.
	29	+
7	7	= Gzip compression and caching of static pages =
8	8
9	9	We're working on making these features part of the XWiki core (see [[XWIKI-2022>>http://jira.xwiki.org/jira/browse/XWIKI-2022]]). While waiting for this to be natively implemented, the recommended solution is to set up an Apache Web Server in front of your servlet container and install/configure the following modules: