My TreeCellEditor takes 100% CPU-power

Hi,
I have a custom TreeCellEditor on a JTree which displays a JComponent with (a JCheckBox and a JLabel). When I click once on a label ( on a checkbox, everything is normal ), the nodes is selected and the TreeCellEditor is invoked. But when I open the Windows Task Manager, I see that the thread is using 100% processer power. This stops as soon as I click on a JCheckBox or when I expand or collapse another node in the tree.
I've put tracing code in all my methods, but none of them seem to cause an infinite loop... Any ideas...?
Thanx!

I really don't have the time to search the relevant peaces of code, but maybe you can help me find the problem myself. When I override the paint() method in my component and I dump the stack before calling the super.paint(), I can see that the repaintmanager considers the component as a 'dirty region' and repaints it, over and over and over...
Do you, or anybody else, know when the repaintmanager considers a component as 'dirty' ?

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Java process take 100% cpu

Hello,
I have a webapp running on Tomcat 5.0.28/RHEL 3.0. After some time (approximatively 1 hour), a java process take 100% cpu load and never stop, but the application do nothing.
Some detail on my configuration :
Distribution : Redhat Enterprise Linux 3.0 (updated)
Kernel 2.4.21-37.0.1.ELsmp
Glibc 2.3.2-95.37
JVM : JRockit 1.4.2.08 (the last one)
Tomcat : 5.0.28
Server : 2*Xeon 3GHz HT, 2Go RAM
JVM param : -Xmx:256m -Xms:256m
Thanks for your answers ...

Try taking thread dump (send a SIGQUIT to JRockit using "kill"). If you
get a thread dump, the VM is alive, and it's probably your java program
that's broken. In that case, make a JRA recording to see what's happening:
http://e-docs.bea.com/jrockit/docs142/usingJRA/jra.html
The methods pane is probably what you're looking for.
If you don't get any thread dump when sending a SIGQUIT to JRockit,
come back here.
Regards //Johan
Gr?goire Rolland wrote:
Hello,
I have a webapp running on Tomcat 5.0.28/RHEL 3.0. After some time (approximatively 1 hour), a java process take 100% cpu load and never stop, but the application do nothing.
Some detail on my configuration :
Distribution : Redhat Enterprise Linux 3.0 (updated)
Kernel 2.4.21-37.0.1.ELsmp
Glibc 2.3.2-95.37
JVM : JRockit 1.4.2.08 (the last one)
Tomcat : 5.0.28
Server : 2*Xeon 3GHz HT, 2Go RAM
JVM param : -Xmx:256m -Xms:256m
Thanks for your answers ...

Zenity takes 100% CPU Time

When I run as root or normal User
zenity --notification --text="test"
The zenity process takes 100% Cpu time
System:
Arch 32bit gnome 2.22
Last edited by brickwedde.eu (2008-05-06 11:26:00)

I GOT IT... I think.
zenity --notification actually calls libnotify! I was trying out a script and suddenly realized something, because by chance dbus decided to take a break. Take a look at these two code fragments.
$ zenity --info --text "hello"
$ _
$ zenity --notification --text "hello"
libnotify-Message: Unable to get session bus: Failed to connect to socket /tmp/dbus-jmMdFXbznS: Connection refused
<hang>
<100% CPU usage>
I've figured out why: it's basic socket programming gone wrong. The notification part of zenity calls libnotify, tries to connect to libnotify's socket, and fails, using 100% CPU waiting for the connection to... end a stream that never started.
A possible solution is to just use notify-send.
-dav7
Last edited by dav7 (2008-05-09 00:27:30)

Labview Loop Takes 100% cpu

Hello,
I'm wondering the best way to send a serial command when a button is pressed. Right now I have a while loop that checks if the button is pressed each time. If is is, it sends the serial command and adds the response to a text box via a shift register. If not, the original text box info is passed to the shift register. However, this loop takes 100% cpu (ok, only one core at 100% so technically %50), and I think its because the text box is getting overwriten every cycle. However, I'm not sure how else to do it. Attached is a print screen, let me know if you would like the file.
Thanks,
Eric
Solved!
Go to Solution.
Attachments:
loop1.png ‏42 KB

An event structure is the best way. The next best way is to simply put in a wait in the loop.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

HTTPService request takes 100% cpu

Hi,
I've developed a Flex app that displays an organization chart
of employees in a company. As the user navigates around the tree,
it requests data as needed from the server using an HTTPService
object. I've noticed that when the application first starts up, it
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CPU is pegged at 100%, which causes the browser to be completely
unresponsive. This happens in both IE and Firefox. Subsequent
requests to the server complete in well under a second (usually
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like a pretty light load to me). I'm using the corelib JSON decoder
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returns. Googling for this problem hasn't returned anyone else
experiencing this problem. Any help improving the performance of my
application would be greatly appreciated.

An event structure is the best way. The next best way is to simply put in a wait in the loop.
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

Oracle 10g 10.2.0.3.0 takes 100% CPU

Hi,
We are using Web sphere commerce server (IBM) with Oracle 10g. we are currently in development phase. what ever execute (jobs) small job like uploding 100 records, CPU takes 100%. the process can't complete, it goes on.
System Details
2 CPU and 8 GB RAM Intel Based system
OS: Redhat server 5.1
SQL> show sga
Total System Global Area 2097152000 bytes
Fixed Size 1262740 bytes
Variable Size 251661164 bytes
Database Buffers 1828716544 bytes
Redo Buffers 15511552 bytes
shared_pool_size big integer 112M
java_pool_size big integer 112M
PGA and SGA
pga_aggregate_target big integer 200M
sga_target big integer 2000M
Pls could any one help on this. is it correct values SGA has or what could be the issue.
Thanks
Regards
Settu Gopal

Settu Gopal wrote:
Hi,
We are using Web sphere commerce server (IBM) with Oracle 10g. we are currently in development phase. what ever execute (jobs) small job like uploding 100 records, CPU takes 100%. the process can't complete, it goes on.Settu,
in addition you might want to trace the session to find out what it is waiting for. In 10g you can use the DBMS_MONITOR package to enable the tracing, and then use the "tkprof" utility as outlined in the article to get the trace file generated analyzed.
You can also use the V$SESSION view (BLOCKING_SESSION_STATUS, BLOCKING_SESSION, BLOCKING_INSTANCE) to find out if the session is blocked for any reason, although it shouldn't consume CPU in that case.
Regards,
Randolf
Oracle related stuff blog:
http://oracle-randolf.blogspot.com/
SQLTools++ for Oracle (Open source Oracle GUI for Windows):
http://www.sqltools-plusplus.org:7676/
http://sourceforge.net/projects/sqlt-pp/

Reader 9.1 (Linux) takes 100% CPU

Initially when starting Adobe Reader and opening a document everything is fine. But after a few minutes Reader takes up to 100% CPU. This also happens when starting Adobe Reader without opening a document.
It's Adobe Reader 9.1 (AdobeReader_enu-9.1.0-1.i486) on Fedora 10 (i386)

Hello there,
I can reproduce the same issue. I just start acroread (without any options or files), wait some time and suddenly acroread starts to use one whole cpu. Here some information about the system:
> cat /etc/issue
CentOS release 5.2 (Final)
> uname -a
Linux wumc0310 2.6.18-92.1.22.el5 #1 SMP Tue Dec 16 11:57:43 EST 2008 x86_64 x86_64 x86_64 GNU/Linux
> acroread -v
9.1.0
I also tried the trick with
> ACRO_DISABLE_FONT_CONFIG=1 acroread
but it didn't change anything.
Do you got some ideas how I can track down this problem? I tried to use
> acroread -DEBUG
but here absolutely nothing happened, just with
> acroread -DEBUG acroread
the reader started and shows
Loading PlugIn /opt/Adobe/Reader9/Reader/intellinux/plug_ins/Annots.api ... [dlopen success for Annots.api, handle = 0xbf32f68]
Loading PlugIn /opt/Adobe/Reader9/Reader/intellinux/plug_ins/EScript.api ... [dlopen success for EScript.api, handle = 0xca14620]
after some minutes the next plugin info occured:
Loading PlugIn /opt/Adobe/Reader9/Reader/intellinux/plug_ins/EFS.api ... [dlopen success for EFS.api, handle = 0xcc1fad0]
and some minutes later, the acroread process started to use the whole cpu...
If I start acroread and try to trace the programm, at first the output looks like:
gettimeofday({1242055601, 629918}, NULL) = 0
ioctl(3, FIONREAD, [0])                 = 0
gettimeofday({1242055601, 629991}, NULL) = 0
poll([{fd=3, events=POLLIN}, {fd=13, events=POLLOUT}], 2, 15) = 0
gettimeofday({1242055601, 644659}, NULL) = 0
ioctl(3, FIONREAD, [0])                 = 0
gettimeofday({1242055601, 644729}, NULL) = 0
poll([{fd=3, events=POLLIN}, {fd=13, events=POLLOUT}], 2, 1) = 0
gettimeofday({1242055601, 645655}, NULL) = 0
ioctl(3, FIONREAD, [0])                 = 0
gettimeofday({1242055601, 645719}, NULL) = 0
poll([{fd=3, events=POLLIN}, {fd=13, events=POLLOUT}], 2, 0) = 0
ioctl(3, FIONREAD, [0])                 = 0
poll([{fd=3, events=POLLIN}, {fd=13, events=POLLOUT}], 2, 0) = 0
and as soon the cpu consumption has started, the output is:
gettimeofday({1242055677, 855078}, NULL) = 0
ioctl(3, FIONREAD, [0])                 = 0
gettimeofday({1242055677, 855118}, NULL) = 0
poll([{fd=3, events=POLLIN}, {fd=13, events=POLLOUT, revents=POLLERR|POLLHUP}], 2, 5) = 1
gettimeofday({1242055677, 855158}, NULL) = 0
ioctl(3, FIONREAD, [0])                 = 0
gettimeofday({1242055677, 855197}, NULL) = 0
poll([{fd=3, events=POLLIN}, {fd=13, events=POLLOUT, revents=POLLERR|POLLHUP}], 2, 5) = 1
gettimeofday({1242055677, 855237}, NULL) = 0
ioctl(3, FIONREAD, [0])                 = 0
gettimeofday({1242055677, 855277}, NULL) = 0
poll([{fd=3, events=POLLIN}, {fd=13, events=POLLOUT, revents=POLLERR|POLLHUP}], 2, 5) = 1
(just for the record)
Greetings
Toni

Opening VI and consuming 100% CPU power

I am trying to debug my VI. The first few times the VI ran well but suddenly the VI hang up. I have no choice but to end the LabView process using the Task Manager. When I try to restart this VI again, it fails to open and the Task Manager indicates that the LabView program is now consuming 100% of the CPU time but still fail to open this VI. Looks like it is entering into an infinite loop. I cannot fix anything for I cannot go into my VI to change anything. LabView just consumes all the CPU power and do nothing. What went wrong?
Regards,
Larry

Okay. That is very strange. I am seeing the same behavior. (I have LV 8.2)
When I first downloaded the VI, it opened just fine. If I did a saveas, closed the VI, and reopened the copy, I got 99% CPU usage. I reopened the one from the message, no problem. I left that one open and tried opening the one I had saved. It said I already had one in memory by that name do I want to view the one in memory or replace? I said replace. When it opened to the block diagram, everything was okay. But when I clicked on the window to view the front panel, that is when the CPU usage jumped up again.
So somehow the problem is associated with the FP. Nothing looks particular wrong about your code. The question is how did you manage to get a copy of the file that isn't causing problems when you open it?
I think you will want to recreate the VI from scratch. You are able to view a copy to see whay you have which is good. And it doesn't look too complicated.
What is interesting is that if I delete everything from the VI's block diagram (leaving nothing apparent on the FP), save, close, reopen, I still get the extreme CPU Usage. It seems confined to LV, as I am still able to switch over and working within the browser to answer this message.
Message Edited by Ravens Fan on 04-16-2007 02:30 PM

OAM process takes 100% CPU (strange SQL in it)

Hi!
I have noticed on our PROD that on eprocess is taking more then 7 hours with 100% CPU load. Here is brief detail about it:
03:08:12 apps@PROD> @si 547
Current SQL....have result if session is active....
SQL_FULLTEXT
Select count(distinct(R.Request_ID)) From Fnd_Concurrent_Programs_vl CP, Fnd_User U, Fnd_Concurr
ent_Requests R, Fnd_Responsibility_Tl RES, Fnd_Application_vl A
Elapsed: 00:00:00.06
SID_SERIAL STATE      OSUSER     TERMINAL   LOGON           SEC_WAIT LAST_CALL
547,42977 WAITED SHO prod       unknown    12.01 12:50:54     26423     26425
            RT TIME
Elapsed: 00:00:00.01
SID_SERIAL      AUDSID DBPID APPPID USERNAME   MODULE        ACTION          STATUS   STATE
547,42977   11087548 10585 1344   APPS       OAM                           ACTIVE   WAITED SHO
                                                                                       RT TIME
Elapsed: 00:00:00.01
03:15:41 apps@PROD> As you can see, SQL is prety strange and it's plan is several Gigs(!!!) Because module is OAM I have no guts to kill it just like that. Is there any way to see what is this really and could it be killed (Do I have to restart concurrent) or what?
THX in front.
Damir Vadas
Edited by: Funky on Jan 13, 2009 3:15 AM

After some KGB approaches, one user with System Administrator responsibility has admit that he has run by mistake u query!
So be aware whom do you expose System Administrator responsibility!
Case closed!

Multi-select LOV's hang form and use 100% CPU power

Hello,
We are using Designer 6i (6.5.52.1.0) and Headstart 6.5
In one of our forms we are using 6 Multi-select LOV's.
When we click the Cancel or Ok button (included through QMS_MSEL_LOV_BUTTONS), or hit Enter query in one of the ML_... blocks the form hangs and starts using all the CPU-power. I've tested this locally (c/s) and through the web (iAS), same result...
I already rebuilt the LOV's but the problem isn't solved.
We've got other forms with one or two multi-select LOV's, and these work fine.
Has anyone experienced this behaviour before, and what is the cure?
Thanks in advance!
Wouter

Wouter,
If you are running against Solaris, you could be running into the following:
Headstart applications that run via webforms on a Sun Solaris application server, suffer again from bug 1985903. This bug was spotted and solved a time ago and seemed to be solved at next
releases of Forms 6i. Now, on Solaris the bug is introduced again.
Description
===========
1. When using a multi-select LOV (which is displayed in a modal dialog
window), you select the records you want, press OK, and the application exits.
2. When using a shuttle control to move records from left to right or vice
versa, you select the records you want, press '>' to move them, and the
application exits.
This occurs in Forms 6.0.8.13.0 and 6.0.8.14.1. It did NOT occur in prior
releases. This is some kind of forms bug.
Workaround
==========
For some reason the call to procedure renumber in qms$msel.process_records
causes the application to exit. If you copy the code from renumber to all the
places from which it is called, it works fine.
- open qmslib65.pll in Form Builder
- open package body qms$msel
- find procedure process_records and define a local variable l_recno of type
number.
- find local procedure renumber and copy the body of this procedure
(everything
after 'begin' and before 'exception').
- replace each call to 'renumber;' with the copied code.
A new version of qms$msel package body is available on iXchange for download.
See Headstart Oracle Designer 6i, Bugs and Fixes.
Hope this helps,
Marc Vahsen
Headstart Team
Oracle NL

Mail 6.0 in Mountain constantly uses 100% CPU power???

Hi,
I have upgraded to Mountain Lion and it would be perfect if there was one major issue fixed: when having Mail.app open, this application uses between 80 to 110% of the CPU power constantly. The main issue is reduction of speed of other operations but more concerning is that fan colling fan just runs endlessly.
Has anyone experienced such issue? The activity Monitor shows that Mail uses all processing power.
I use a macbook 13' (unibody) and Mail has an Exchange mail account active (and the iCloud email). After upgrading I recreated all mailboxes (by deleting the V2 folder), server setting is using SSL and no SASL.
Could it be a bug or something in the server settings/account setting?
Y.

Finally solved.
Had to delete the full Mail folder (+Maild Downloads) in the Library/Application Support, to recreate the full app support fmor the new version.
Seems to work normally now.
Thanks for the tip

WindowServer process takes 100% CPU

PowerBook G4 1,5 Ghz, 1GB RAM Leopard 10.5.5.
Since i installed last Leopard Update i got WindowServer using 100% from time to time. No other operations can be done, the notebook is unusable. To resolve the issue i have to rebbot the machine...
Can anyone tell me if it is a known bug or not?

I have the exact same problem; the computer continues to run, I can move windows, but everything else is frozen, the computer is unresponsive and the only solution is a force power off reboot.
The symptoms are as described: windowsserver starts using 99.8% of CPU and simply won't let go of the CPU. I will look into the CoolIris connection, as I have it loaded, but I use Firefox and not Safari.
No one seems to have the solution, but it is comforting to know that I am not the only one having the issue.
APPLE: Please take note, this is a OS bug that needs to be fixed.

PREMIER CS5 USE 100% CPU POWER WHEN EXPORT

hi,
My computer data is as follows:
OS: WINDOWS 7 ULTIMATE 64 BIT
PREMIER VER :CS5 5.03
CPU: INTEL i7 950 3.07 ghz
MOTHERBOARD: ASUS P6X58D-E
RAM: G.SKILL 12 GB 1333 DDR 3
GPU: GIGABYTE GTX 470 1280MB DDDR5
BOOT HARD DRIVE: 60 GB SSD SATA 2
SECOND HARD DRIVE: 2X1TB WD BLACK USENIG MARVEL YPKON RAID 0
My question is
When I export a movie to FLV or AVI I notice that the CPU uses all 100% power
Must say it does not happen all the time
But often happens
Is that a problem should be normal?
If no what can be done
tanks

What type of projects are you exporting, and what are the settings? How much "effect" and how many layers are you adding in?
I ran some tests over the weekend (including an update of PPBM5 for my machine) and noticed only about 50% of the CPU being used. I was exporting HDV sequences with NEAT noise reduction to Blu-ray MPEG2s.
We have similar systems which is why this caught my attention.
Erik

Tomcat 4.0 and Oracle 10g takes 100% CPU and grinds to a halt

Hi, I have a system to support that is currently running on Tomcat 4.0 on a Windows Server 2003 R2 SP2 machine with 3.06Ghz, 4Gb Memory, 2Gb Page file connecting to an Oracle 8.1.6 database on a Windows NT 4 virtual server with 3.2Ghz, 1152Mb Memory, 1536Mb Page file.
I have another Windows virtual server 2003 R2 SP2 machine with 2Gb of memory and a 4Gb page. This server has Tomcat 4.0 and an Oracle 10.2.0.3.0 database. I have made sure that the Oracle 10g classes12.jar file is used.
I am trying to run the application on the new server. In some tests I had users logging on one by one for the first 5 users - performance was great and the application ran faster than the current live system. When I then got another 10 - 15 people logging on the CPU stuck at 100% on the server, even exploring the server was almost impossible, and the application slowed down to unworkable.
We dont know if the problem lies with the very fact that we are trying to connect to a 10g database which is cost based and the application was written using rule based Oracle 8. Or is it the virtual server? Or is it the fact that we have both the application and the database on the same server.
I dont know if it is possible to have another Tomcat4.0 server running on our live server but connecting to the 10g database - what would happen with classes12.zip and classes12.jar? would there be a conflict?
I would really appreciate some help here. You should know though that I am not a hardened java programmer - I can dabble, but am an Oracle Forms, Reports, Discoverer, SQL person by trade. I am also a trainee DBA, so again am not an expert by any means.
Thanks in advance for your help
Lizzie

lizzie8 wrote:
Hi, I have a system to support that is currently running on Tomcat 4.0 on a Windows Server 2003 R2 SP2 machine with 3.06Ghz, 4Gb Memory, 2Gb Page file connecting to an Oracle 8.1.6 database on a Windows NT 4 virtual server with 3.2Ghz, 1152Mb Memory, 1536Mb Page file.Tomcat 4? We're up to Tomcat 6. The important difference is the JDK supported. What JDK are you using for Tomcat?
>
I have another Windows virtual server 2003 R2 SP2 machine with 2Gb of memory and a 4Gb page. This server has Tomcat 4.0 and an Oracle 10.2.0.3.0 database. I have made sure that the Oracle 10g classes12.jar file is used.classes12.jar is pretty old technology. The JAR should match your JDK and version of Oracle.
I am trying to run the application on the new server. In some tests I had users logging on one by one for the first 5 users - performance was great and the application ran faster than the current live system. When I then got another 10 - 15 people logging on the CPU stuck at 100% on the server, even exploring the server was almost impossible, and the application slowed down to unworkable.You don't say anything about the whether or not you're using a connection pool or what's happening to the open connections and cursors. If you find that those are drifting up over time, it's likely that the code isn't closing resources properly.
We dont know if the problem lies with the very fact that we are trying to connect to a 10g database which is cost based and the application was written using rule based Oracle 8. Or is it the virtual server? Or is it the fact that we have both the application and the database on the same server.Database and app server should be separated, IMO.
I dont know if it is possible to have another Tomcat4.0 server running on our live server but connecting to the 10g database - what would happen with classes12.zip and classes12.jar? would there be a conflict?
I would really appreciate some help here. You should know though that I am not a hardened java programmer - I can dabble, but am an Oracle Forms, Reports, Discoverer, SQL person by trade. I am also a trainee DBA, so again am not an expert by any means.You need more data. Get some tools to see where the time is being spent. Start monitoring your Oracle connections and cursors to see what's going on. Install some filters to get raw timings on your Java calls. Without data, you're guessing in the dark.
%

Windows explorer takes 100% CPU

Hi, folks ... I have t42 with a strange problem. Sometimes the windows explorer get 100% of the CPU especially when skype is on and rarely when its not sign in ... the OS installation is clean and I can't find any information about this. Thanks for help. Regards!

Hello,
Let's see if we can identify where the problem is more specifically.... A few questions, in no particular order:
• Does the problem occur if you log in as a different user?
• Does the problem occur if you start the computer in Safe Mode?
Knowing the answers to the former will help us determine whether the problem is due to software running just under your user profile, while the answers to the latter will help reduce the number of possible programs that could be responsible for the issue, since booting in Safe Mode only loads a fraction of those which normally run under Windows.
Regards,
Aryeh Goretsky
I am a volunteer and neither a Lenovo nor a Microsoft employee. • Dexter is a good dog • Dexter je dobrý pes
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My TreeCellEditor takes 100% CPU-power

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