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Home » Language IDEs » Java Development Tools (JDT) » Eclipse 3.5sr1 is painfully slow (Eclipse is painfully slow to use. Hangs often.)
Eclipse 3.5sr1 is painfully slow [message #551556] Sat, 07 August 2010 01:55 Go to next message
No real name is currently offline No real nameFriend
Messages: 2
Registered: August 2010
Junior Member
Hi,

I use Eclipse for Java development.

My eclipse is painfully slow. Other large Java programs run fast on the same
box. I have a dualcore processor; 2.2 Ghz each code. Eclipse easily takes
70-90% of both CPU power combined. Multiple threads are taking too much
performance. Also, Content Advisor is painfully slow. Many times, eclipse
hangs for 20-30 seconds while editing.


This issue is related to
http://www.eclipse.org/forums/index.php?t=msg&th=166447& amp;start=0 However, my
issue may be deeper that the one discussed in the bug report.

Can you please suggest me what I can do debug this issue?


Thank you.


Reproducible: Always

Steps to Reproduce:
1. It happens all the time for me when I use large .java files and large
number of windows open etc.
Re: Eclipse 3.5sr1 is painfully slow [message #551569 is a reply to message #551556] Sat, 07 August 2010 08:57 Go to previous messageGo to next message
Dani Megert is currently offline Dani MegertFriend
Messages: 3802
Registered: July 2009
Senior Member
eclipse@mulval.com wrote:
> Hi,
>
> I use Eclipse for Java development.
>
> My eclipse is painfully slow. Other large Java programs run fast on
> the same
> box. I have a dualcore processor; 2.2 Ghz each code. Eclipse easily
> takes
> 70-90% of both CPU power combined. Multiple threads are taking too
> much
> performance. Also, Content Advisor is painfully slow. Many times,
> eclipse
> hangs for 20-30 seconds while editing.
>
> This issue is related to
> http://www.eclipse.org/forums/index.php?t=msg&th=166447& amp;start=0
> However, my
> issue may be deeper that the one discussed in the bug report.
>
> Can you please suggest me what I can do debug this issue?
Make some stack dumps (see
http://wiki.eclipse.org/index.php/How_to_report_a_deadlock#G etting_a_stack_trace_on_Windows)
and report a bug.

Dani
>
>
> Thank you.
>
>
> Reproducible: Always
>
> Steps to Reproduce:
> 1. It happens all the time for me when I use large .java files and
> large
> number of windows open etc.
>
Re: Eclipse 3.5sr1 is painfully slow [message #551578 is a reply to message #551569] Sat, 07 August 2010 12:29 Go to previous messageGo to next message
No real name is currently offline No real nameFriend
Messages: 2
Registered: August 2010
Junior Member

Dan,

This is not a deadlock situation. So, I do not understand how stackdumps would be of help. It is a more generic issue of general slowness.

Thanks.
Re: Eclipse 3.5sr1 is painfully slow [message #551614 is a reply to message #551578] Sun, 08 August 2010 04:34 Go to previous message
Walter Harley is currently offline Walter HarleyFriend
Messages: 847
Registered: July 2009
Senior Member
<eclipse@mulval.com> wrote in message news:i3jjjf$fku$1@build.eclipse.org...
>
> Dan,
>
> This is not a deadlock situation. So, I do not understand how stackdumps
> would be of help. It is a more generic issue of general slowness.

"General slowness" is not useful information. The Eclipse project has
performance tests that are run on every integration and milestone build as a
release is being developed; we ensure that, at least for the many scenarios
that are tested, there are no slowdowns from one release to the next.

So if something is going slowly on your machine, it is either because you
are in a scenario that is not getting tested, or it is because there is some
issue with your configuration. To figure that out, we need to know what
code is causing the slowdown. If you take some thread dumps, as instructed
in the link that Dani sent you, on average the threads will be spending
their time in the slowest part of the code. So, the thread dumps will help
indicate what might be causing your slowdown.

I can't tell from your post whether your problem is that Eclipse 3.5.1 is
slower than previous versions of Eclipse, or if it's just that Eclipse is
running more slowly than you think it ought to be running. If it's the
latter, I am not sure what you are using to set your expectations.
Regardless, though, thread dumps will help to clarify what part of the
program is taking the most time on your machine.
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