Linux performance unusably bad

Here at work I just reformatted my computer to move to linux from windows.
I am running IDEA 5.1.2 (havnt upgraded our license yet).

When this same version was running on windows up until this week it was lightning fast. Now with linux IDEA is unusably slow. Typing takes 2-4 seconds before the text shows up on the screen, any kind of GUI interaction with IDEA just kills my computer.

There is no anti-virus or anything running, the box is pretty much a pristine RedHat EL 5 installation.

I've browsed around these forums and seen NUMEROUS threads about horrible linux performance, and there seems to be some correlation with the nvidia xinerama drivers. I have the xinerama drivers running dual head as well.

Ive tried running IDEA with both the java5 and java6 JREs, and it doesnt matter.
I need some insight into why IDEA is running so slow or my whole development team is going to have to switch over to eclipse, which runs just fine.

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well i changed the look and feel from alloy to idea 4.5 and the performance did get noticeably better.

but it looks like total crap and the performance is still below poor.

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Hmmm. I'm running Mandriva Linux 2008.1 with xinerama on dual head and everything is as fast as ever. This is with Selena (7.0 M2) and jdk 1.5. I'm just using the default look and feel. Speed is great. I couldn't ask for more. There must be something else going on. Speed was also fine with the preceding 6.0.

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i just tried version 7M2 and it was just as bad.

anyone have any insight? i dont have the time to keep screwing around with this...

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Hello Chris,

i just tried version 7M2 and it was just as bad.

anyone have any insight? i dont have the time to keep screwing around
with this...


You could try to capture a CPU snapshot using the latest 7.0 EAP build and
attach it to a JIRA issue.
If the problem is in the drivers there won't be anything interesting there,
but, it's worth a try and won't take more than 5 minutes.

-tt


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sure....

what is JIRA?

just a snapshot of the gnome system monitor is fine?

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Hello Chris,

what is JIRA?


http://www.jetbrains.net/jira/
http://www.jetbrains.net/confluence/display/IDEADEV/Workingwithissue+tracker

--
Dmitry Jemerov
Software Developer
JetBrains, Inc.
http://www.jetbrains.com/
"Develop with Pleasure!"


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Hello Chris,

sure....

what is JIRA?


It the bugtracker for Jetbrains products:
http://www.jetbrains.net/jira/
(you'll need to register an account, doens't take more than a minute)
Attaching a CPU snapshot there makes sure it doesn't get lost.

But, before doing that, have you tried to contact Jetbrains support with
your problem?

-tt


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well i made a JIRA issue.
http://www.jetbrains.net/jira/browse/IDEA-15598

i still havnt seen anyone with any idea why idea runs so poorly.

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Hello Chris,

well i made a JIRA issue.
http://www.jetbrains.net/jira/browse/IDEA-15598
i still havnt seen anyone with any idea why idea runs so poorly.


It would be a very good idea to capture a CPU snapshot and attach it to the
created JIRA issue.

'Early Access' builds of IDEA (like the recent 7.0 release candidates) have
a specific 'CPU snapshot' button in the toolbar for this purpose.
On release builds you have to enable the profiler first. See the following
KB article:
http://support.jetbrains.com/kb/entry.jspa?externalID=192&categoryID=5

-tt


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ok snapshot attached to the JIRA issue

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ok snapshot attached to the JIRA issue

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i moved from using the nvidea xinerama config to the nvidea TwinView config and all the problems went away.

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I thought I was the only one that experience this. Yeah IDEA is so damn slow on Linux. I've already tune my JVM and performance is still dead crap. Even Netbeans 6.7 on Linux is still way faster. I'm using IntelliJ 8.1. Using Netbeans on Linux now because of this.

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