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i’m using Ubuntu 10.04 for GWT development and I noticed that on dev mode, the code runs faster on Firefox (in comparison to Chrome), but I’m thinking that even for Firefox there must be a version that runs faster, better for GWT Development mode
DevMode runs half in Java (outside the browser) and half in JavaScript (within the browser), with a bit of native code (the DevMode plugin) in between.
The reason Chrome is slower than Firefox is that the DevMode plugin runs in a sandbox, so calls and data have to cross the sandbox boundaries.
Now, whereas latest versions of browsers always perform better than previous ones, it shouldn’t change much things wrt DevMode performance. What costs the most is crossing the Java/JavaScript boundaries, which requires chatting over the network (even if it’s generally localhost).
For best performances, try the SuperDevMode, where everything runs in JavaScript in the browser: no plugin, no Java/JavaScript bridge over the netweork, just plain old JavaScript.