Print this page IDE (Eclipse) is slow

Knowledge Article Number 000232686
Description There are several reasons why you can experience latency with We'll give you all the information you need to know on why you can experience the latency along with a few tools on how to fix it. 

Reason for Eclipse latency


  • Unmanaged code: The Apex compiler compiles all dependencies upon saves. If there is a significant amount of code (say > 2MB), then this could result in very high compile times per each save/push to the platform.
  • Dequeue delay:  The IDE saves are always asynchronous for its current version
  • Java version: A common issue with Eclipse and Java 7 or earlier is a java heap size that is too small, which causes local performance issues. You can refer to this article and consider tweaking the "-Xmx1024m" parameter to "-Xmx2048m" if there are quite a few projects open (but not any more than this). "--launcher.XXMaxPermSize" should have a setting of at least 256m. If running Java 7, it should be version 7u80 or later for Eclipse 4.5.
  • Large code base: Consider working with ANT build scripts. Take a look at the build.xml in the Cumulus CI.


Faster Eclipse options

  • MavensMate: provides integration with good speed.
  • migration tool: you could use ANT for deploying and retrieving items from your environment, which is also a fast way to deploy/retrieve code.

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