[news.eclipse.newcomer] Re: Eclipse hates me! Help requested please:

[Kevin Crocker <kevin@xxxxxxx>]

On Wed, 01 Aug 2007 11:03:27 -0400, Eric Rizzo wrote:

> Kevin Crocker wrote:
>> On Tue, 31 Jul 2007 12:10:11 -0400, Eric Rizzo wrote:
>> 
>>> Kevin Crocker wrote:
>>>> Thanks for the explanation. It helps a lot - unfortunately, the --launcher...
>>>> one doesn't actually set the MaxPermGen higher than 64M - I tried this
>>>> and set it t0 128M and the Memory Monitor still says that PermGen is set
>>>> to 64M
>>> What "Memory Monitor" are you talking about that shows Perm Gen size? 
>> 
>> The memory monitor that is listed as an attachment in the eclipse Bug
>> for PermGen, I think I still have it as a gz file and could send it to you
>> or post it somewhere --- or I could go and find the bug at eclipse again
>> 
>> https://bugs.eclipse.org/bugs/show_bug.cgi?id=92250
>> 
>> It's listed as a tweaked version of Memory Monitor and it shows a bunch
>> of nice bars - but if you hold your mouse over each bar it tells you
>> what the bar means and it's size -- try it out 
>> 
>> now, of course, I could be getting led down a garden path, but I doubt it
>> as this bug discussion is mostly by serious eclipse coder types.
> 
> I'll give the tool a try. At the very least to make sure it shows that 
> my Perm Gen size is increased (which I know it is because I used to get 
> the problem before increasing it).
> 
> 
>>> I can assure you that if Eclipse is indeed running in a Sun JVM it will 
>>> set the Perm Gen size with that option. Can you confirm the JVM that 
>>> Eclipse is running in (Help > About Eclipse > Configuration Details)
>> 
>> I can assure you that I am running SUN's JVM because that's all that's
>> installed on this machine.
> 
> Don't be so sure, unless you're using the -vm paramter. Without -vm in 
> eclipse.ini or on the command line, it is VERY VERY common for Eclipse 
> to find a "bad" JVM before finding a Sun one you installed yourself.
> In the interest of trying to figure out why the Perm Gen size on your 
> machine is not getting set, please either use the About Eclipse dialog 
> as I suggested above or specify -vm in your eclipse.ini to be sure. It 
> will only take a couple of minutes and it will get me to stop harping on 
> you to verify your VM vendor and version. :-)
> 
> 
>> And I can also assure you that despite
>> setting the MaxPermGen with the --launch (which by the way was already 
>> set - the eclipse people did that automagically upon detecting SUN JVM)
>> or by setting it manually and experimenting with different values,
>> it does not change the PermGen size. I've read through all of SUN's 
>> documents on this too, and even SUN says that the -X and -XX parameters
>> are not guaranteed to work. This one doesn't on my machine.
>> 
>>> You can always try forcing the max perm gen setting to your JVM by
>>> adding "-XX:MaxPermSize=128m" (line by itself, without quotes) after the
>>> -vmargs line.
>> 
>> I did that too - I changed this 12 times to different numbers, and every
>> single time, the Memory Monitor showed that I always had 64M --- but more
>> importantly, Eclipse 3.3 kept dying after a very short time - sometimes
>> as little as one or two clicks.
> 
> That is what makes me think the VM Eclipse is using is not the one you 
> think it is. If it turns out to be the right JVM, there appears to be a 
> bug in the JVM or some kind of conflict on your system preventing the 
> perm gen size from getting set.
> 
> Eclipse is dying because 64MB is simply not enough perm gen space for an 
> app with lots of classes. "Core" Eclipse does not likely reach that 
> limit, but when you add a massive set of plugins like MyEclispe or WTP, 
> it bumps its head on that ceiling quite easily.
> 
> 
>> I suggest you read the above bug discussion. I found it shortly after I
>> had posted this thread.
> 
> Oh I have - if you look closely you'll see my name in several comments 
> to that bug discussion.
> 
> Eric

Here's part of my log file showing the PermGen OOME and times:
!ENTRY org.eclipse.ui 4 0 2007-08-01 16:42:22.886
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.OutOfMemoryError: PermGen space

!ENTRY org.eclipse.ui 4 0 2007-08-01 16:43:07.558
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.OutOfMemoryError: PermGen space

!ENTRY org.eclipse.ui 4 0 2007-08-01 16:50:51.230
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.OutOfMemoryError: PermGen space

!ENTRY org.eclipse.ui 4 0 2007-08-01 16:52:52.752
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.OutOfMemoryError: PermGen space

!ENTRY org.eclipse.ui 4 0 2007-08-01 16:55:08.953
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.OutOfMemoryError: PermGen space

!ENTRY org.eclipse.ui 4 0 2007-08-01 16:56:16.976
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.OutOfMemoryError: PermGen space

!ENTRY org.eclipse.ui 4 0 2007-08-01 16:56:53.142
!MESSAGE Unhandled event loop exception
!STACK 0
java.lang.OutOfMemoryError: PermGen space

Kevin