High cpu impact and many Java exceptions

Hi,
Our development portal is behaving strangely. It's running at normal speed, but with a much higher CPU usage than normal. A quick trace showed that the log-files is filling up fast with the following error message:
System.err sap.com/irj Guest 19 #SAPEngine_Application_Thread[impl:3]_7##0#0#Error##Plain###com.sap.engine.services.httpserver.exceptions.HttpIOException: Read timeout. The client has disconnected or a synchronization error has occurred. Read 15205812 bytes. Expected 45455962.
I have no idea what causes this error, or for how long it has been a problem.
Any clues on what component may be failing, and how to debug and solve this so the development portal can return to a normal state?
Thanks in advance guys,
J. Daugaard

...further research and learning.
Here is a good tutorial on Java. Evidently, what I called "jobs" is referred to as processes and threads in this tutorial. The tutorial states that multithreaded execution is an essential feature of the Java platform which explains the avalanche of threads I observe. However, I am still stumped at what causes the avalanche of threads and excessive CPU consumption for such a mediocre task. Also the system log says that IcedTea has an error stating "Application title was not found in manifest. Check with application vendor". I interpret this to mean that IcedTea does not recognized some application. What application? .....the applet?

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IcedTea High CPU usage and multiple jobs created

High CPU usage and multiple jobs created while streaming data via a java applet from a secure/certified website. CPU usage is normal for a few minutes then suddenly jobs multiply and CPU usage climbs on one of the jobs.
Jobs with the following command begin to multiply in my job queue with one job showing CPU usage at 368% and staying resident in memory (yeah, a long one):
/usr/lib/jvm/java-7-openjdk/jre/bin/java -Xbootclasspath/a:/usr/share/icedtea-web/netx.jar:/usr/share/icedtea-web/plugin.jar:/usr/share/java/js.jar: -classpath /usr/lib/jvm/java-7-openjdk/jre/lib/rt.jar sun.applet.PluginMain /run/user/1000/icedteaplugin-tbattist-SZ3xKO/7160-icedteanp-plugin-to-appletviewer /run/user/1000/icedteaplugin-tbattist-SZ3xKO/7160-icedteanp-appletviewer-to-plugin /run/user/1000/icedteaplugin-tbattist-SZ3xKO/7160-icedteanp-plugin-debug-to-appletviewer
I have the following java packages installed on my system:
local/icedtea-web-java7 1.5-1
local/jdk7-openjdk 7.u51_2.4.6-1
local/jre7-openjdk 7.u51_2.4.6-1
local/jre7-openjdk-headless 7.u51_2.4.6-1
I also get the following message in my system log when starting to stream:
Apr 11 12:26:18 saturn logger[7872]: IcedTea-Web java error manual log:
Apr 11 12:26:18 saturn logger[7873]: Application title was not found in manifest. Check with application vendor
Apr 11 12:26:37 saturn logger[7883]: IcedTea-Web java error - for more info see itweb-settings debug options or console. See http://icedtea.classpath.org/wiki/IcedTea-Web#Filing_bugs for help.
Anybody having this issue or clue on what to do? I am wondering if recent changes to openssl (heartbleed) might have java change ramifications? Should I submit bug to Icedtea?
FYI - My system:
Processor : 4x AMD A8-3870 APU with Radeon(tm) HD Graphics
Memory : 7646MB (2518MB used)
Operating System : Arch Linux 3.14.0-4
OpenGL Renderer : Gallium 0.4 on AMD SUMO
X11 Vendor : The X.Org Foundation

...further research and learning.
Here is a good tutorial on Java. Evidently, what I called "jobs" is referred to as processes and threads in this tutorial. The tutorial states that multithreaded execution is an essential feature of the Java platform which explains the avalanche of threads I observe. However, I am still stumped at what causes the avalanche of threads and excessive CPU consumption for such a mediocre task. Also the system log says that IcedTea has an error stating "Application title was not found in manifest. Check with application vendor". I interpret this to mean that IcedTea does not recognized some application. What application? .....the applet?

High CPU load and com.apple.ImageCaptureExtension2 crash after upgrade

After upgrading my Macbook Air from Lion to Mountain Lion, the system has a very high cpu load, and the crash reporter is the process that causes thee high load. In the error log I see this entry several times per second:
17.08.12 12:58:46,011 ReportCrash[5998]: com.apple.message.domain: com.apple.crashreporter.writereport.crash
com.apple.message.signature: Image Capture Extension
com.apple.message.signature2: com.apple.ImageCaptureExtension2 ||| 8.0 (8.0)
com.apple.message.signature3: 03A96CBDA3C85A114383537BFC5C8999
com.apple.message.result: NO
com.apple.message.summarize: YES
I investigated a bit more and recovered, that it has something to do with the printer drivers. When I remove all printers from setting, everything is fine. As soon as I add a printer (Brother MFC 9440CN printer/scanner, printer driver provided by Mountan Lion), the crash reporter starts it's work and the error log is full of those entries.
Any suggestions?
Thanks in advance,
Marcus

I did more exploration and found the cause of this, but I don't know how to fix it:
I removed all Brother and Lexmark printer drivers and rebooted (and also tested with a virtual machine using 10.8.0 as guest os that never had any printer installed). As soon as I enter the printer settings and press the "+", the crashes begin, so it looked like the bonjour one of the printers announcing themselves via Bonjour were causing this.
When watching a picture in the preview app the same happend. We have two multi function printers in our network, the already mentioned brother printer and a Lexmark X204N. Switching off the Lexmark (which wasn't installed on my Mac) solved the problem. Switching off the printer is no solution in our office (it's our fax device and main printer), but switching off mDNS on the Lexmark also solved it. But this can only be a workaround.
Is this a known problem with Lexmark devices and Mountain Lion (it works fine with machines using Lion)? Are there any fixes known? It's just the Lexmark device announing itself via Bonjour that causes trouble, even if the driver is not installed.

Permanent high CPU load and timeouts in communication channels

Dear Colleagues,
we've a strange issue since last week. At first we had an problem with a redirect to the cytrix online booking engine within the travel management application of our SAP NW Portal. There is a redirect.jsp file deployed in our PI system that connects to cytrix and passes the URL with session link and session cookie to our Portal. We fixed that issue by restarting the PI system.
We have a PI 7.0 stack 23 on HP-UX.
After restarting we found that we've got a very high CPU load (about 75% overall CPU, or 300% at 4 CPUs) probably caused by very frequent (3 per second) minor garbage collection runs (as seen in GC.log).
On friday we had timeouts within one of our communication channels in the PI system.
We changed the heap size from 2GB to 3GB and the new generation from 341MB to 768MB and restarted the PI system. But after a few ours the system uses 75% RAM of the CPU high CPU load and the GC runs are still the same.
This is a short excerpt of our GC.log:
52645.608: [GC 52645.608: [DefNew: 395326K->2003K(589824K), 0.0334788 secs] 1628688K->1235472K(2949120K), 0.0335882 secs]
52646.071: [GC 52646.072: [DefNew: 395219K->2072K(589824K), 0.0351584 secs] 1628688K->1235680K(2949120K), 0.0353002 secs]
52646.665: [GC 52646.665: [DefNew: 395288K->2173K(589824K), 0.0371023 secs] 1628896K->1236058K(2949120K), 0.0372198 secs]
52647.022: [GC 52647.022: [DefNew: 395389K->1969K(589824K), 0.0352723 secs] 1629274K->1235991K(2949120K), 0.0353865 secs]
52647.368: [GC 52647.368: [DefNew: 395185K->1885K(589824K), 0.0346132 secs] 1629207K->1235944K(2949120K), 0.0347310 secs]
52647.804: [GC 52647.804: [DefNew: 395101K->2069K(589824K), 0.0357804 secs] 1629160K->1236129K(2949120K), 0.0358980 secs]
52648.327: [GC 52648.328: [DefNew: 395285K->2285K(589824K), 0.0380093 secs] 1629345K->1236369K(2949120K), 0.0381374 secs]
52648.737: [GC 52648.738: [DefNew: 395501K->2282K(589824K), 0.0365516 secs] 1629585K->1236400K(2949120K), 0.0366749 secs]
52649.125: [GC 52649.125: [DefNew: 395498K->2435K(589824K), 0.0352310 secs] 1629616K->1236589K(2949120K), 0.0353407 secs]
52649.462: [GC 52649.462: [DefNew: 395651K->2436K(589824K), 0.0361161 secs] 1629805K->1236654K(2949120K), 0.0362322 secs]
52649.840: [GC 52649.840: [DefNew: 395652K->2322K(589824K), 0.0341640 secs] 1629870K->1236539K(2949120K), 0.0342721 secs]
Does anyone know what can cause the high load?
Is the frequency of the GC runs normal?
Can the timeouts be connected to the high CPU load?
The error ony occurs on our productive system.
I'd appriciate your help very much.
Kind regards,
Paul

hi Paul,
I believe an issue like that needs to be done onsite and not via a forum
as it probably requires doing lots of checks/tests
my suggestion would be to get a PI consultant expert with basis experience onsite or do it via OSS with SAP
Regards,
Michal Krawczyk

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hi,
when i use office it causes a very high cpu usage even when its in idle mode.
i am unable to work with it, because its extremely slow.
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Hi I am in India ... from last few months I am noticing that Flash Player is using too much CPU when ever I run IE, Explorer or opera ... when I disable Flash Player then IE and opera work on normal CPU ... I have uninstalled Chrome since I was unable to disable flash player on it ... I have 2nd generation i5 .. 3gb ram ... dedicated 1gb nvidia graphics card ... 750 Gb hdd ... win7 home premium 64 bit ... I am able to easily play Crysis 2 ... halo ... far cry ... wolfenstein 2009 and many more intense graphic games on my laptop without over heating it ... but flash player causes excessive CPU constant use and system to over heat if I watch a complete movie on you tube ... any other compatible player available plz do tell ..... rgds

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ram installed 8gb
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Message Edited by Izmi on 01-17-2009 02:58 AM

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Syslogd makes high CPU Load and standby mode doesn´t work.

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-ViciousFerret
Come follow your BlackBerry Technical Team on Twitter! @BlackBerryHelp
Be sure to click Like! for those who have helped you.
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BlueAeon
Welcome to Apple Discussions!!
The icons on the right of the menu bar … show a beachball when I put the cursor over themWell, if this was your only problem I would put it down to a corrupt preference or cache file. Nevertheless, it is worth seeing how much this helps.
The file you need to trash is 'systemuiserver.plist'. But there are potentially two of them, plus it is best to delete your caches as well, so ...
In "/Users/<yourname>/Library/Caches", delete everything
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In "/Users/<yourname>/Library/Preferences/ByHost", delete com.apple.systemuiserver.xxx.plist where 'xxx' is a 12 digit (hexadecimal) numeric string.
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High cpu impact and many Java exceptions

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