ANTLR 4 IDE Degrades Eclipse Performance Significantly

[sithys]

Please refer to a YouTube video I uploaded demonstrating my issue: https://www.youtube.com/watch?v=zGraNrwP8Es

Typing any text into any editor with ANTLR 4 IDE installed causes the text to be delayed by several fractions of a second, sometimes all appearing at once on the screen after a delay of almost a full second. It makes it difficult to correct mistakes while typing.

The first and second VMs both have 2 cores and 4096mb of RAM, both with 64mb video memory and 3D acceleration enabled. In both VMs eclipse has been configured to start with 1 gig of ram with a max of 2. Both use the same version of JDK and eclipse.

No other plugins have been installed on the first VM except: Faceted framework, Xtext, ANTLR 4 IDE. No plugins have been installed on the second VM.

Is there any way I can increase the performance of the text editors while running ANTLR 4 IDE?

[HSorensen]

Can you try
Eclipse -consolelog

Maybe something shows up.

Which versions of eclipse jdk antlr4ide etc?

[HSorensen]

Also if you run just one vm with Antlr4ide, does the problem still exists?

[sithys]

Sorry I never run more than one VM at a time.

Neon.1a Release (4.6.1)
ANTLR 4 IDE 0.3.6

What were you looking for from the logs?

[timeraider4u]

can you please post the content of your eclipse.ini file? maybe some modification of the Java heap memory settings could help improve the performance.. please see also https://wiki.eclipse.org/FAQ_How_do_I_increase_the_heap_size_available_to_Eclipse%3F

[sithys]

One VM with the IDE:

cat eclipse.ini
-startup
plugins/org.eclipse.equinox.launcher_1.3.200.v20160318-1642.jar
--launcher.library
/home/sithys/.p2/pool/plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.400.v20160518-1444
-product
org.eclipse.epp.package.java.product
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.appendVmargs
-vm
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin
-vmargs
-Dosgi.requiredJavaVersion=1.8
-XX:+UseG1GC
-XX:+UseStringDeduplication
-Dosgi.requiredJavaVersion=1.8
-Xms256m
-Xmx1024m
-Declipse.p2.max.threads=10
-Doomph.update.url=http://download.eclipse.org/oomph/updates/milestone/latest
-Doomph.redirection.index.redirection=index:/->http://git.eclipse.org/c/oomph/org.eclipse.oomph.git/plain/setups/

A second VM also with the IDE:

cat eclipse.ini
-startup
plugins/org.eclipse.equinox.launcher_1.3.200.v20160318-1642.jar
--launcher.library
/home/antlrdev/.p2/pool/plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.1.400.v20160518-1444
-product
org.eclipse.epp.package.java.product
--launcher.defaultAction
openFile
-showsplash
org.eclipse.platform
--launcher.appendVmargs
-vm
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin
-vmargs
-Dosgi.requiredJavaVersion=1.8
-XX:+UseG1GC
-XX:+UseStringDeduplication
-Dosgi.requiredJavaVersion=1.8
-Xms1024m
-Xmx2048m
-Declipse.p2.max.threads=10
-Doomph.update.url=http://download.eclipse.org/oomph/updates/milestone/latest
-Doomph.redirection.index.redirection=index:/->http://git.eclipse.org/c/oomph/org.eclipse.oomph.git/plain/setups/

Both have about the same performance.

[HSorensen]

@sithys Did the -consolelog option show anything?

[timeraider4u]

Nothing unusual in your eclipse.ini I would say - at least nothing that would explain the slow performance.
Do you recognize this problem with all ANTLR grammar files or only with specific ones?
May also be related to #117

[HSorensen]

I have noticed similar to this. It seems related to the outline view. If you minimize the outline it helped in my case.