Eclipse - Revision history

Kevin at 12:20, 7 August 2009

2009-08-07T12:20:04Z

← Older revision		Revision as of 12:20, 7 August 2009
Line 114:		Line 114:
	2094		2094

-	-To see the ~~limitaion~~ of open files	+	-To see the limitation of open files
	$ ulimit -a		$ ulimit -a
	core file size (blocks, -c) #		core file size (blocks, -c) #
Line 144:		Line 144:
	* hard nofile 14336		* hard nofile 14336

-	-Log ~~off~~ and on then check with <code>ulimit</code>. It should show like this.	+	-Log out and in then check with <code>ulimit</code>. It should show like this.
	$ ulimit -n		$ ulimit -n
	14336		14336


-	-If it is still not changed. Restart the computer and check again. If still ~~does not~~ show the changed value, open <code>/etc/pam.d/common-session</code> file and add the following line.	+	-If it is still not changed. Restart the computer and check again. If it still doesn't show the changed value, open <code>/etc/pam.d/common-session</code> file and add the following line.
	$ gksudo gedit /etc/pam.d/common-session		$ gksudo gedit /etc/pam.d/common-session
	session required pam_limits.so		session required pam_limits.so
		+
		+	-Log out and in.

	-Now it should work!		-Now it should work!
	$ ulimit -n		$ ulimit -n
	14336		14336

Kevin at 09:16, 6 April 2009

2009-04-06T09:16:26Z

← Older revision		Revision as of 09:16, 6 April 2009
Line 14:		Line 14:
	==== Plug-in Update Manager ====		==== Plug-in Update Manager ====
	===== Enabling the Class Update Manager =====		===== Enabling the Class Update Manager =====
-	There may come a time when it is required to use the classic update manager rather than the new one in Eclipse Ganymede. One good example is Aptana as a plug-in of Eclipse Ganymede. If it is Eclipse Europa (3.3) which uses the classic update manager, Aatana can be just installed through the manager. However, if it is Ganymede (3.4), the classic update manager has to be manually enabled to be used to install Aptana.	+	There may come a time when it is required to use the classic update manager rather than the new one in Eclipse Ganymede. One good example is Aptana as a plug-in of Eclipse Ganymede. If it is Eclipse Europa (3.3) which uses the classic update manager, Aatana can be just installed through the manager. However, if it is Ganymede (3.4), the classic update manager has to be manually enabled to be used to install Aptana ('''This is not necessary as Aptana now has the update site for Ganymede''').

	*One possible way to enable it is using the 'Capabilites' option of Eclipse.		*One possible way to enable it is using the 'Capabilites' option of Eclipse.
Line 42:		Line 42:
	==== Plug-in Manual Installation ====		==== Plug-in Manual Installation ====
	==== Using <code>dropins</code> (Ganymede) ====		==== Using <code>dropins</code> (Ganymede) ====
		+	*When it is required to install plug-ins by copying plugins and features directories to the Eclipse main directory as there is no update site for the plug-ins, <code>droupins</code> directory can be used as a safer and easier way to do this.
		+
		+	*Whenever Eclipse is started, it checks the <code>dropins</code> directory and if there are newly copied plugins, it installs these. When it happens Equinox p2 checks if there is any conflict with other plug-ins installed. P2 also or checks if there are any dependencies regarding the new plug-ins, and if so it solves this with fetching dependencies.
		+
		+	*If the installed plugins in the <code>droupins</code> direcory are removed. P2 can also automatically removed these from Eclipse when startup.
		+
		+	*The files which can be copied to the <code>droupins</code> directory are jar file or plug-in directories.
		+
		+	<pre>
		+	eclipse/
		+	dropins/
		+	org.eclipse.someplugins.jar
		+	org.eclipse.plugins-directory/
		+	plugin.xml
		+	another-plugin.jar
		+	</pre>
		+	or
		+	<pre>
		+	eclipse/
		+	dropins/
		+	eclipse/
		+	features/
		+	plugins/
		+	</pre>
		+	or
		+	<pre>
		+	eclipse/
		+	dropins/
		+	plugin1/
		+	eclipse/
		+	features/
		+	plugins/
		+	plugin2/
		+	eclipse/
		+	features/
		+	plugins/
		+	</pre>

Kevin at 07:22, 6 April 2009

2009-04-06T07:22:26Z

← Older revision		Revision as of 07:22, 6 April 2009
Line 1:		Line 1:
-	[[Category:~~Software Development Tools~~]]	+	[[Category:Eclipse]]

	[http://en.wikipedia.org/wiki/Eclipse_(software) Eclipse] is a software development platform which consists of an IDE and plug-in systems. It supports many different computer languages although it is written in [http://en.wikipedia.org/wiki/Java_(programming_language) Java] and its primary language support is [http://en.wikipedia.org/wiki/Java_(programming_language) Java].		[http://en.wikipedia.org/wiki/Eclipse_(software) Eclipse] is a software development platform which consists of an IDE and plug-in systems. It supports many different computer languages although it is written in [http://en.wikipedia.org/wiki/Java_(programming_language) Java] and its primary language support is [http://en.wikipedia.org/wiki/Java_(programming_language) Java].

Kevin at 09:00, 23 March 2009

2009-03-23T09:00:19Z

← Older revision		Revision as of 09:00, 23 March 2009
Line 1:		Line 1:
	[[Category:Software Development Tools]]		[[Category:Software Development Tools]]

-	[http://en.wikipedia.org/wiki/Eclipse_(software) Eclipse] is a software development platform which consists of an IDE and plug-in systems. It ~~support~~ many different computer languages although it is written ~~using~~ [http://en.wikipedia.org/wiki/Java_(programming_language) Java] and its primary language support is [http://en.wikipedia.org/wiki/Java_(programming_language) Java].	+	[http://en.wikipedia.org/wiki/Eclipse_(software) Eclipse] is a software development platform which consists of an IDE and plug-in systems. It supports many different computer languages although it is written in [http://en.wikipedia.org/wiki/Java_(programming_language) Java] and its primary language support is [http://en.wikipedia.org/wiki/Java_(programming_language) Java].

	TODO: The contents about the following headings should be done.		TODO: The contents about the following headings should be done.

Kevin at 07:11, 23 March 2009

2009-03-23T07:11:20Z

← Older revision		Revision as of 07:11, 23 March 2009
Line 13:		Line 13:
	=== Plug-in Install ===		=== Plug-in Install ===
	==== Plug-in Update Manager ====		==== Plug-in Update Manager ====
		+	===== Enabling the Class Update Manager =====
		+	There may come a time when it is required to use the classic update manager rather than the new one in Eclipse Ganymede. One good example is Aptana as a plug-in of Eclipse Ganymede. If it is Eclipse Europa (3.3) which uses the classic update manager, Aatana can be just installed through the manager. However, if it is Ganymede (3.4), the classic update manager has to be manually enabled to be used to install Aptana.
		+
		+	*One possible way to enable it is using the 'Capabilites' option of Eclipse.
		+	#Select 'Preferences' in the 'Window' menu in Eclipse.
		+	#Expand the 'General' category on the left hand side
		+	#Click 'Capabilites'
		+	#Check the Classic Update check box.
		+	Now the classic update manager can be found from the 'Help' menu in Eclipse.
		+
		+
		+	*Another easier way
		+	The way explained above is only possible when it is Eclipse SDK meaning non-SDK versions do not have the 'Capabilites' option. However, there is easier way to do it.
		+
		+	-Create any workspace through Eclipse or the old one can be used as well.
		+
		+	-Close Eclipse if it is running.
		+
		+	-Open the file below.
		+	your_workspace/.metadata/.plugins/org.eclipse.core.runtime/.settings/org.eclipse.ui.workbench.prefs
		+
		+	-Add the following line (Do not put the end of the existing line. It must be a new line).
		+	UIActivities.org.eclipse.equinox.p2.ui.sdk.classicUpdate=true
		+
		+	-Run Eclipse and the classic update manager can be found from the 'Help' menu in Eclipse.
		+
		+
	==== Plug-in Manual Installation ====		==== Plug-in Manual Installation ====
	==== Using <code>dropins</code> (Ganymede) ====		==== Using <code>dropins</code> (Ganymede) ====
		+
		+
		+
		+	== Troubleshooting ==
		+	=== Eclipse Update Site Works too Slow ===
		+	If there is any Eclipse update site works to slow, adding the site address to the localhost IP can be a very easy way to make the Update Manager ignore that site.
		+
		+	For example, if it takes too long to download files from eclipse.stu.edu.tw. Add it to localhost IP address then it will be ignored when updating.
		+	(In my case it really took too long to download from eclipse.stu.edu.tw).
		+
		+	-Open <code>/etc/hosts</code>
		+
		+	127.0.0.1 localhost blah blah '''eclipse.stu.edu.tw'''
		+
		+
		+	=== Too Many Open Files ===
		+	If Eclipse keeps showing error messages like below.
		+	Plug-in org.eclipse.jst.server.tomcat.core was unable to load class org.eclipse.jst.server.tomcat.core.internal.TomcatLaunchConfigurationDelegate.
		+	/eclipse_installed_path/eclipse/configuration/org.eclipse.osgi/.lazy.15 ('''Too many open files''')
		+
		+	Problems occurred while trying to save the state of the workbench.
		+	Could not read master table.
		+	/your_workspace/.metadata/.plugins/org.eclipse.core.resources/.safetable/org.eclipse.core.resources ('''Too many open files''')
		+
		+	This happens because Eclipse opens more files than the number of files can be opened.
		+
		+
		+	-To see the open files, use <code>lsof</code> (list open files) and wc to count the lines.
		+	$ lsof \| wc -l
		+	8965
		+
		+	-To see the files opened by Eclipse
		+	$ lsof \| grep eclipse \| wc -l
		+	2094
		+
		+	-To see the limitaion of open files
		+	$ ulimit -a
		+	core file size (blocks, -c) #
		+	data seg size (kbytes, -d) #
		+	scheduling priority (-e) #
		+	file size (blocks, -f) #
		+	pending signals (-i) #
		+	max locked memory (kbytes, -l) #
		+	max memory size (kbytes, -m) #
		+	open files (-n) '''1024'''
		+	pipe size (512 bytes, -p) #
		+	POSIX message queues (bytes, -q) #
		+	real-time priority (-r) #
		+	stack size (kbytes, -s) #
		+	cpu time (seconds, -t) #
		+	max user processes (-u) #
		+	virtual memory (kbytes, -v) #
		+	file locks (-x) #
		+
		+	or
		+	$ ulimit -n
		+	'''1024'''
		+
		+
		+	-To change it, put a big number to the open files limitation. Open the file <code>/etc/security/limits.conf</code> and add the following lines.
		+
		+	$ gksudo gedit /etc/security/limits.conf
		+	* soft nofile 14336
		+	* hard nofile 14336
		+
		+	-Log off and on then check with <code>ulimit</code>. It should show like this.
		+	$ ulimit -n
		+	14336
		+
		+
		+	-If it is still not changed. Restart the computer and check again. If still does not show the changed value, open <code>/etc/pam.d/common-session</code> file and add the following line.
		+	$ gksudo gedit /etc/pam.d/common-session
		+	session required pam_limits.so
		+
		+	-Now it should work!
		+	$ ulimit -n
		+	14336

Kevin: New page: Category:Software Development Tools [http://en.wikipedia.org/wiki/Eclipse_(software) Eclipse] is a software development platform which consists of an IDE and plug-in systems. It suppo...

2009-03-19T10:06:05Z

New page: Category:Software Development Tools [http://en.wikipedia.org/wiki/Eclipse_(software) Eclipse] is a software development platform which consists of an IDE and plug-in systems. It suppo...

New page

[[Category:Software Development Tools]]

[http://en.wikipedia.org/wiki/Eclipse_(software) Eclipse] is a software development platform which consists of an IDE and plug-in systems. It support many different computer languages although it is written using [http://en.wikipedia.org/wiki/Java_(programming_language) Java] and its primary language support is [http://en.wikipedia.org/wiki/Java_(programming_language) Java].

TODO: The contents about the following headings should be done.

== Installation ==
=== Download ===
=== Install ===

== Configuration & Plug-ins ==
=== Configuration ===
=== Plug-in Install ===
==== Plug-in Update Manager ====
==== Plug-in Manual Installation ====
==== Using <code>dropins</code> (Ganymede) ====