13.37, 2.6.38 kernel and NetBeans

ajevremovic · 05-14-2011, 03:17 AM

Hi!

Had a big problems with NetBeans (6.9.1 and 7.0) on Slackware current (13.37) with kernel 2.6.38. NetBeans UI responsiveness was very low: after few seconds freezes, window must loose focus to render changes.

Problem solved by returning to 2.6.37 kernel.

Any ideas what can cause this behavior?

xeleema · 05-14-2011, 03:31 AM

Greetingz!

Pretty sure it's not switching the kernel that solved your issue, but the reboot itself.
(Unless you went from a kernel with large memory support, to one that couldn't "see" all of your RAM, or vice versa).

Try switching to a lighter Windows Manager for a bit and see if you come across the same issue.

Also, take a look at your system's available RAM and the load via "top" and see what NetBeans is doing.
Then reboot to the other kernel and see if you're missing a huge chunk.

Good luck!

ajevremovic · 05-14-2011, 11:24 AM

Hi xeleema,

already have tried all you have mentioned before decreased kernel (switched from kde to xfce, than to plain X with Netbeans as the only active app, rebooted several times). Also, top showed 10-25% cpu usage of 'java' process. However, I have forget to check RAM.

Best regards,

Richard Cranium · 05-14-2011, 08:09 PM

What graphics driver are you using? (In other words, are you using an Nvidia card with the open source driver?)

ajevremovic · 05-15-2011, 12:38 AM

No, it's:

00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) (rev 03)

Richard Cranium · 05-16-2011, 01:41 AM

Did you look in ~/.netbeans/7.0/var/log/messages.log to see what netbeans chose for your memory settings? You'll see something like...

Code:

Input arguments:
        -Djdk.home=/usr/lib64/java
        -Dnetbeans.system_http_proxy=DIRECT
        -Dnetbeans.system_http_non_proxy_hosts=
        -Dnetbeans.dirs=[I've deleted the rather long classpath that was here.]
        -Dnetbeans.home=/home/me/netbeans-7.0/platform
        -Dnetbeans.importclass=org.netbeans.upgrade.AutoUpgrade
        -Dnetbeans.accept_license_class=org.netbeans.license.AcceptLicense
        -Xmx768m
        -Xss2m
        -Xms32m
        -XX:PermSize=32m
        -XX:MaxPermSize=384m
        -Dapple.laf.useScreenMenuBar=true
        -Dapple.awt.graphics.UseQuartz=true
        -Dsun.java2d.noddraw=true
        -XX:+HeapDumpOnOutOfMemoryError
        -XX:HeapDumpPath=/home/me/.netbeans/7.0/var/log/heapdump.hprof
Compiler: HotSpot 64-Bit Server Compiler
Heap memory usage: initial 32.0MB maximum 682.7MB
Non heap memory usage: initial 34.4MB maximum 432.0MB
Garbage collector: PS Scavenge (Collections=13 Total time spent=0s)
Garbage collector: PS MarkSweep (Collections=1 Total time spent=0s)
Classes: loaded=7644 total loaded=7644 unloaded 0
INFO [org.netbeans.core.ui.warmup.DiagnosticTask]: Total memory 4,150,456,320

...and the bolded lines should tell you how much memory Netbeans is using and how much it thinks that you have.

I haven't upgraded to 13.37 yet, but Netbeans 7.0 has been running quite well on this machine. That includes a project with ~22K java source files.

(EDIT: Duh, that would be on a Slackware64 version 13.1 box.)

rouvas · 05-16-2011, 10:33 AM

I report that running NetBeans.7.0 on a stock Slack.13.37 installation with ATI Radeon HD 4250 (as reported by lspci) poses no problem at all.

ajevremovic · 05-17-2011, 04:54 AM

I have this in log file:

Code:

Heap memory usage: initial 32.0MB maximum 386.7MB
Non heap memory usage: initial 54.2MB maximum 438.0MB  
Garbage collector: Copy (Collections=29 Total time spent=0s)
Garbage collector: MarkSweepCompact (Collections=0 Total time spent=0s)
Classes: loaded=6690 total loaded=6690 unloaded 0
INFO [org.netbeans.core.ui.warmup.DiagnosticTask]: Total memory 2,095,423,488

Anyway, if rouvas has no problems with clean install, problem is likely about some of my upgrades.

Thanks!