Also, the slowdown for me seems to be across the board.

Right now my CPU is very high and the busy thread is doing this:

Daemon Thread [Code server for rooms from Mozilla/5.0 (Macintosh; U;
Intel Mac OS X 10.5; en-US; rv:1.9.0.15) Gecko/2009101600 Firefox/
3.0.15 on http://localhost:8888/?gwt.codesvr=localhost:9997
@ :twjO<"N0ofi:u+0] (Suspended)
        Thread.currentThread() line: not available [native method]
        ThreadLocal<T>.get() line: 124
        StringCoding.deref(ThreadLocal) line: 49
        StringCoding.encode(String, char[], int, int) line: 361
        String.getBytes(String) line: 812
        BrowserChannel.writeUtf8String(DataOutputStream, String) line: 1583
        BrowserChannel$InvokeOnClientMessage.send() line: 866
        BrowserChannelServer.invokeJavascript(CompilingClassLoader,
JsValueOOPHM, String, JsValueOOPHM[], JsValueOOPHM) line: 164
        ModuleSpaceOOPHM.doInvoke(String, Object, Class<?>[], Object[]) line:
120
        ModuleSpaceOOPHM(ModuleSpace).invokeNative(String, Object, Class<?>
[], Object[]) line: 507
        ModuleSpaceOOPHM(ModuleSpace).invokeNativeInt(String, Object, Class<?>
[], Object[]) line: 240
        JavaScriptHost.invokeNativeInt(String, Object, Class<?>[], Object[])
line: 75
        Element$.getPropertyInt$(Element, String) line: not available
        ResizableWidgetCollection.checkWidgetSize() line: 216
        ResizableWidgetCollection$1.run() line: 125
        ResizableWidgetCollection$1(Timer).fire() line: 141
        GeneratedMethodAccessor36.invoke(Object, Object[]) line: not
available
        DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
        Method.invoke(Object, Object...) line: 592
        MethodAdaptor.invoke(Object, Object...) line: 103
        MethodDispatch.invoke(JsValue, JsValue[], JsValue) line: 71
        OophmSessionHandler.invoke(BrowserChannel, BrowserChannel$Value, int,
BrowserChannel$Value[]) line: 157
        BrowserChannelServer
(BrowserChannel).reactToMessagesWhileWaitingForReturn(BrowserChannel
$SessionHandler) line: 1713
        BrowserChannelServer.invokeJavascript(CompilingClassLoader,
JsValueOOPHM, String, JsValueOOPHM[], JsValueOOPHM) line: 165
        ModuleSpaceOOPHM.doInvoke(String, Object, Class<?>[], Object[]) line:
120
        ModuleSpaceOOPHM(ModuleSpace).invokeNative(String, Object, Class<?>
[], Object[]) line: 507
        ModuleSpaceOOPHM(ModuleSpace).invokeNativeObject(String, Object,
Class<?>[], Object[]) line: 264
        JavaScriptHost.invokeNativeObject(String, Object, Class<?>[], Object
[]) line: 91
        Impl.apply(Object, Object, Object) line: not available
        Impl.entry0(Object, Object, Object) line: 188
        GeneratedMethodAccessor29.invoke(Object, Object[]) line: not
available
        DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 25
        Method.invoke(Object, Object...) line: 592
        MethodAdaptor.invoke(Object, Object...) line: 103
        MethodDispatch.invoke(JsValue, JsValue[], JsValue) line: 71
        OophmSessionHandler.invoke(BrowserChannel, BrowserChannel$Value, int,
BrowserChannel$Value[]) line: 157
        BrowserChannelServer(BrowserChannel).reactToMessages(BrowserChannel
$SessionHandler) line: 1668
        BrowserChannelServer.processConnection() line: 401
        BrowserChannelServer.run() line: 222
        Thread.run() line: 613


On Dec 4, 3:14 pm, jd <[email protected]> wrote:
> I am also using Leopard and the "hang" is over a minute before
> anything starts to happen.
>
> On Dec 4, 4:45 am, jvictor <[email protected]> wrote:
>
>
>
> > DevMode starts up quickly as you would expect inside the new eclipse
> > console window and I receive the url to copy and paste into the
> > browser.  The issue occurs as soon as I connect to DevMode from any
> > browser.  Specifically, the browser seems to "hang" for about 20
> > seconds and will then come back to life and my app performs normally
> > from that point on.  If I do a reload of the browser I experience the
> > same "hanging" for the same duration.  I have looked at the system
> > activity monitor during this time and a java process is consuming all
> > cpu.  Once the "hanging" is over, the java process returns to normal
> > usage.
>
> > I experience this issue with several different modules / projects
> > including the default skeleton application created by GWT.
>
> > At work I use a vanilla Ubuntu 9.04 installation and my experience
> > with RC2 on that machine has shown that DevMode is very fast.
> > Therefore, I suspect this has something to do with macs and java.
>
> > On Dec 4, 5:36 am, Chris Ramsdale <[email protected]> wrote:
>
> > > Where are you seeing the slowness? Is it confined to initial module load 
> > > (of
> > > a specific app maybe) or are you experiencing speed degradation across the
> > > board?
>
> > > On Thu, Dec 3, 2009 at 7:02 AM, jvictor <[email protected]> wrote:
> > > > Is anyone else experiencing *extremely* slow DevMode on a mac?  I'm
> > > > using Leopard 10.5.8 with all of the updates and running DevMode with
> > > > 64 bit Java 6.  I experience the same slowness when using 32 bit Java
> > > > 5 as well.  I'm using 2.0 RC 2 and experience the problem using
> > > > firefox 3.5.5 and safari.
>
> > > > --
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