Ubuntu :: Java Applets Cause High Cpu Usage?

May 1, 2010

yesterday when 10.04 got released i decided i'd install it and try it out, when i tried to run a java applet on it (runescape for example) the CPU usage got really high (around 100%), is that normal?

Info about my processor if you need:AMD Athlon(tm) 64 X2 Dual Core Processor 5000+ 2,61 GHz.This is my first time ever using ubuntu.

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Ubuntu :: High RAM Usage Vs. High CPU Usage

Jul 19, 2011

I am running 10.10 on a netbook (1.6Ghz Atom N270, 2GB RAM). Because it has limited resources, I am currently testing to see which apps I want to use.

Which should take more priority -- an application that uses less RAM or an application that uses less CPU?

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Ubuntu :: Java Applets Won't Run In Browsers

Mar 6, 2010

I am using Ubuntu 8.10. All the java programs run perfectly fine in Geany. But when I try to run java applets in web browsers it did not run. I have tried running it in Opera and FireFox. I have written a simple program which display "hello world" in browsers. When I refresh the page it displays the text for about 2 or 3 seconds and after that it disappears.

Are there any other ways to run java applets?

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Ubuntu Multimedia :: Java Applets Does Not Work

Oct 8, 2010

When I look at my content plugins in Firefox and the list of IcedTea plugins is 29 items long. Is this my problem or do Java Applets just not work in Lynx?

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Software :: Java Applets Never Work

Nov 17, 2010

I always have trouble with java applets in Firefox, any time I open one the whole browser just seems to lock up. Any pointers for making them run properly? I'm running Ubuntu 10.04 and I have the IcedTea plugin.

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Software :: Unable To Run Java Applets

Mar 6, 2010

i am running Oracle EBS R12.1.1 on Linux RHEL 5.3 ,I am not able to run java applets on the same . I installed latest rpm of jre-1.6.0_18 , and it is there in /usr/java/jre1.6.0_18 but when i am searching by command its showing

[Code]....

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Ubuntu :: Java Applets In Firefox Stay Running?

Jul 12, 2010

All day today, my laptop has been absurdly hot.The core temperatures were exceeding 70.0C even though it was on a cooling pad and I had disabled wireless, lowered the screen brightness, and put the CPU on Powersave. (For comparison, the temp usually stays at 45.0C if I do all this)

Finally, I decided to check htop, and I found IcedTea Plugin at the top with 99% CPU usage. This is used to run embedded Java applets (Java, not Javascript). Curiously, no Java applets were running at that time.Now skip ahead an hour to when I finally discover that the IcedTea Plugin was left over from earlier because it didn't stop running when it was supposed to. Looking online, I see several complaints about Java being very taxing on the CPU in Ubuntu, but I don't see anything about Java applets continuing to run after they're gone.

Can anyone who has Java installed confirm that this happens on their system?

1. Open htop. Search for "icedtea" to make sure it isn't already running. Then click on "CPU%" to sort the list.
2. Open this page in Firefox: www.java.com/en/download/help/testvm.xml
3. Check htop. Is IcedTea climbing to the top? (if you have Java, it likely will, because this is a common issue)
4. Navigate off of the Java.com page by closing the tab or clicking Back.
5. Here's what I want to know. Check htop again. Is IcedTea still there?
6. Restart Firefox to get rid of IcedTea.

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Debian :: Java Applets Not Working On Squeeze?

Feb 27, 2011

Why are applets not working on Squeeze? They were working in Lenny and work in Windows 7.

apt-cache policy openjdk-6-jdk icedtea6-plugin
openjdk-6-jdk:
Installed: 6b18-1.8.3-2

[code]...

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Debian :: Java Applets Not Working On Iceweasel?

Jan 10, 2010

I have gnome, iceweasel, and java installed. Java works fine from the command line, but not on sites like the one below.

[URL]

I have java enabled. I'm running squeeze. The 'add-ons' dialog in iceweasel lists the following:

Code:

Java(TM) Plug-in 1.6.0_16

this is the output from the Java console when trying to load the applet:

Code:

load: class AppletGui not found.
java.lang.ClassNotFoundException: AppletGui
at sun.plugin2.applet.Applet2ClassLoader.findClass(Applet2ClassLoader.java:152)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)

[code]....

I think the problem may have to do with where it says "Caused by: java.net.ConnectException: Network is unreachable" but I'm not sure what that means.

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Software :: Want To Run Java Applets In Firefox 3.6.17 - Fedora 14

Jun 24, 2011

Code:

Tells me to go to the plugins folder under firefox. I look in /usr/lib/firefox-3.6 and I dont have a folder named plugins. But firefox does display a list of plugins from Tools>Addons>Plugins. The list displayed by the browser does not include java.

oracle tells me to make a link from this non existent folder to the jre and make a link to lib/i386/libnpjp2.so

I've done a find / and nowhere on the system is there a libnpjp2.so

There are a bunch of files similar to this in

Code:

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Ubuntu Multimedia :: Embedded Java Applets Not Running Sound

Jul 16, 2010

My sound is otherwise working fine, but for some reason i'm not getting any sound when running java applets. This issue is very important to me, i would -really- like to get the sound back on this applet.it's a java runtime environment applet, running in embedded in firefox. Somehow, the systems isn't detecting it as a application outputting sound.

i tried uninstalling the sound manager application via synaptic, selected the 'completely remove' option, and wound up uninstalling essentially the entire OS last weekend. i'd like to not repeat that mishap, as i lost all my data.

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Ubuntu :: Firefox Crashes When Viewing Pages With Java Applets?

Oct 25, 2010

Firefox is crashing whenever I go to a page with a java applet such as this one [URL]... I get the following output in the command line:

GCJ PLUGIN: thread 0xb5e191f0: NP_Initialize
GCJ PLUGIN: thread 0xb5e191f0: NP_Initialize: using /usr/lib/classpath/gappletviewer.
GCJ PLUGIN: thread 0xb5e191f0: NP_Initialize return
GCJ PLUGIN: thread 0xb5e191f0: GCJ_New
GCJ PLUGIN: thread 0xb5e191f0: plugin_data_new

[Code]...

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Software :: Using Iceweasel On Debian - Java Applets Won't Load ?

Mar 19, 2010

I'm using Iceweasel on Debian, and my java applets won't work. They used to work fine so I don't understand what happened to them. I installed the latest java jre from Sun and it made no difference. Java plugin seems to work (at least the javascript part) but it can't seem to download applet's. I tried running one locally (ran on of the example applet that came with the Sun jdk, but they won't work on the web) the java console pops up with these errors.

Quote:

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Programming :: Java Applets - Mouse Dragging Event

Jan 4, 2010

I know how to deal with a mouse click event like so:

Code:

But was happens when I am dealing with mouse dragging? Will my implementation of mouseDragged() get called for every pixel moved? So I just getX() and getY() like with a mouse click?

Also, in order to know when mouse dragging stops and starts, do I also have to put code in mousePressed and mouseReleased?

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Programming :: Java Applets - Timed - Repeating Activities

Jan 14, 2010

So, when I program my Java applet I am expected to use an event based model, where I run functions in response to mouse clicks and so forth, and I am supposed to return quickly so that the applet can continue looping. But what if I want certain functions to run by themselves on a regular schedule (like every 200 ms or so) without blocking mouse events, repaints, and so forth?

I looked at the source code of one Java applet I found, and it accomplished this by creating extra threads. I was wondering if creating extra threads was the only way to accomplish that, or if there was some more proper way to do it built into the Applet somehow.

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Ubuntu :: High CPU Usage In Kubuntu (9.10)?

Feb 12, 2010

I'm running desktop machine with with a core2 duo E6400 with 2GB RAM. I have completed a fresh install of Ubuntu 9.10 (fully updated). I have 10GB root, 2GB swap, 10GB home and 80GB data parititons.

I log in to main administrator account (first boot), create a new user (desktop) account and then use the switch user to log into the desktop account (so logged in to two accounts at the same time).

Whilst logged into the desktop account the CPU usage as seen in system monitor shows the two CPU's alternating at around 100% and the system slows down greatly.

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Ubuntu :: Ram Usage Constantly High?

Apr 12, 2010

Ubuntu 9.04 64-bit I just checked my system monitor and it looks like my memory is at a constant 900 MB's out of 4 gigs of ram. This seems high for only having firefox open.

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Ubuntu :: High X CPU Usage When Using KDE Programs (10.04)?

May 12, 2010

I have recently upgraded from Kubuntu 9.10 to 10.04. I am having trouble with CPU usage by the X server. When running KDE programs (for example Kontact and Amarok) my computer is becoming very sluggish. This seems to be because X is using 90-100% of the CPU constantly when there are any changes to the application (any sort of redraw, even the mouse moving across the screen). I don't experience this with other applications (I am currently writing this from Chromium with no issues at all). Below is all the relevant information I can think to include.

INSTALL PROCESS: Fresh install from Ubuntu 10.04 LiveCD. My /home direrctory is on a separate partition so that has remained unchanged from 9.10. After installing Ubuntu, I installed the kubuntu-desktop package to install kdm and the KDE desktop.

The only real change from my last install is that /var is now also a separate partition (in a bid to save my MySQL data should I have to reinstall again) but it is on the same hard drive as my root partition and so shouldn't be causing any performance issues.

MY X SETUP: Three screen setup using onboard and PCI graphics cards. This worked perfectly before and, after reconfiguring X using nvidia-xconfig works almost as well again. Except that one of my monitors autodetects at 1280x1024 where before it was a higher (and widescreen) resolution.

The issue only presents itself when KDE application screens are visible and disappears when they are hidden (either minimised or closed) As far as Ican tell it could be an X, Qt or KDE issue. But I am not sure what versions of these will have been changed in the upgrade.

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Ubuntu :: High Memory Usage Under 64 Bit?

Jul 11, 2010

My problem seems to be very simple, it's high memory usage. I occasionally will use movie player to watch a few shows and I use firefox as well. My memory usage starts out real small about 500 mb but after using firefox lightly and movie player it jumps to almost 2 gigs and this is after they've been closed what gives? I've attached an image so you can see what I'm talking about.

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Ubuntu :: Very High RAM Usage On Startup - 800 MB?

Aug 2, 2010

I don't understand why I have a 800MB usage at startup. I didn't add any programs to start at startup. I do though have 10 primary partitions that are auto mounted at startup but it shouldn't use up so much, I have 2GB total RAM.

At startup nautilus uses ~400MB of virtual memory in the "system monitor"

Also which is RAM and which is SWAP in resources in system monitor: Virtual Memory && Memory?

-i figure vm is ram but thats not possible sometimes...it exceeds 2GB

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Ubuntu :: OpenGL Causes High Cpu Usage

Apr 1, 2011

I play RuneScape most of the time i'm on the computer and i always keep an eye on the performance. Yesterday and the days before, everything was going good, cpu usage it was causing was between 30 and 60%, now it wont go below 70%. It's always 70-99% for some reason :s i have set settings for graphics to OpenGL (they were like that before too with no problem) and it started causing high cpu usage. If i set it to Safe Mode in graphics settings it gets 100%, I never tweaked the drivers, i have a NVIDIA GeForce 9600 GT, i have the opengl thingies installed along with my nvidia driver. Ubuntu 10.10 32bit.

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Ubuntu :: Seems Slow In Some Areas - High CPU Usage?

Jun 15, 2010

I've been using Ubuntu consistently for about three days now. I really, really love the interface and how everything works and all that, but I've been having a couple of weird problems with speed.

Graphics things seem to work really well. When I go into the overview of all my workspaces, it's instant and looks great. The problem is when I open and use some applications.

For example, when I open up the software center, it takes longer than it did the first time to start up. Also, when I drag windows off from being maximized, it takes literally about five seconds for it to show up as being dragged around by my mouse.

When I look at the system monitor, about 20% of my CPU cores are constantly being used. That's 20% each. I have a 3-core CPU, could that be the problem?

Another example: when I went to ..... just now, it would take a second for any volume changes in the video to register.

And I also have smooth scrolling in firefox, but it's very unresponsive now. It's slow as all hell. Even notifications are showing up more slowly.

So, what's the deal? What could I have done wrong?

CPU: AMD Phenom II X3 2.8Ghz
GPU: ATI Radeon HD 4860 1gb
RAM: 4gb

One more thing: I have really bad screen tearing when I try to move windows around, as if there isn't any vsync on. Where can I turn it on or fix this?

I'm still pretty new to Ubuntu and Linux, but I'm an advanced computer user. Since I feel linux is killing my CPU I think I'm going to boot back into Windows 7 for now, but if I can fix this problem I think I want to keep Ubuntu as my main OS after this, having Windows for games, unless I can get Wine to work right with them.

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Ubuntu Multimedia :: High CPU Usage With ALSA?

Jun 30, 2010

OSS, even though it's emulated *through* ALSA, consumes a microscopic fraction of straight ALSA's CPU usage. For example, when I'm playing something through ALSA with XMMS2, I'm getting about 25-30% CPU usage, but with OSS output, only 2%, tops. The same applies to any other application in which I can choose the output method. And, I'm on 10.04.

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Ubuntu :: Intermittent High RAM Usage On Startup

Jul 12, 2010

I use an Ubuntu 10.04 minimal install with only the packages I want, I like to keep things pretty slim.

On bootup, when I execute "startx", everything starts to load, this is fine. However, just off of a cold boot with only my startup apps running, conky shows around 450mb of RAM usage. It usually is only around 150 - 175.

Sometimes when I boot my computer Conky shows the normal RAM usage in the 150mb range, sometimes it's in the 450mb range.

My startup apps when I start X is openbox, tint2, wicd-gtk, feh (for wallpaper), and conky.

I open up htop when conky reports the weird RAM usage. htop also shows the weird RAM usage but I can't seem to find the memory hogging app.

Is this a kernel issue? I'm using the vanilla Ubuntu 10.04 kernel. Will recompiling from kernel.org fix this?

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Ubuntu Servers :: Apache Ram Usage Too High?

May 6, 2011

i am learning to using ubuntu as my server and learning using vps too

now i getting consfuse about my server memory usage i just have 3 sites , 1 blog site and 2 company profile but apache memory usage is more than 300MB and total of memory use in my server is more than 500 MB (maximum 512MB burst memory)

i am using drupal for my website is this normal ? because in last week, memory consumption in my server no more than 380 MB

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Ubuntu :: High Cpu Usage By Modem-manager?

Jun 23, 2011

I have a problem that the process modem-manager eats up all the cpu resources making it impossible to do anything on my PC. This issue is comes up randomly even during boot up and unfortunately very often. The twist in it is that I can not even kill the process using kill or killall (tried to kill even from top; of course with sudo)

How can I shutdown a process when kill does not help? Is there any way I can disable to start this process during boot up?

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OpenSUSE :: High CPU Usage With XORG / Cause Of This?

Dec 14, 2010

I just upgraded KDE on my openSuSE 11.2 installation. I have never had any problems doing this in the past, but this time, when I rebooted, I noticed that after a few seconds of idle time, my CPU usage goes sky high. I ran top in a console and noticed the culprit was xorg. I am using an NVIDIA card on an AMD64 3200+ with 1 gig of memory. KDE version is currently 4.5.85.
Like I said, I didn't have this problem until the last update. Any ideas as to what could be causing this?

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CentOS 5 :: High CPU Usage On Clock_gettime() C - C++

Apr 5, 2011

I am calling clock_gettime() function to get time with nano seconds accuracy. My program works fine on Ubuntu but have high CPU usage problem on CentOS 5. it takes 40% CPU on Ubuntu and 90% CPU on CentOS. Kindly give me solution so that I can reduce high CPU usage problem on CentOS. You can build this code like: "gcc -lrt gettime.c -o gettime.e"

[Code]....

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Ubuntu :: Freeze And High CPU Usage - Ext4 And Fakeraid?

Mar 12, 2010

I'm using Karmic koala 9.10 64bit.Have three HDD, WD Raptor 36GB X 2 and Seagate 160GB.2 WD Raptors are striped (RAID 0), and all hdds are formatted by ext4.(Intel ICH9R raid) Problem is that, when reading/writing hdd heavily, system freezes a moment or very very slow down. When I used a windows XP, there's no problem. Moreover, one other machine, Karmic Koala 9.10 64bit and ext3, no raid, works very fine.

My system consists of,
Intel C2Q Q6600
2GB DDR2 6400 (1GB X 2)
Gigabyte P35-DS3R
Geforce 8500GT 256MB

[Code]...

If I format my hdd and re-install ubuntu, does it become better? or, if I use software raid provided by linux kernel, or if i don't use a raid?

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Ubuntu :: Click - Drag Results In High CPU Usage?

May 7, 2010

thing I did when I installed 10.04 was to re-arrange my icons. I clicked on the first and started to drag. The icon did not move, and nautilus was using 94% of my cpu for a good 15-20 seconds before gtk-window-decorator was using 95-100% of my cpu for a few more seconds. Finally, after a few more unsuccessful tries with the same results, I was able to move the icons.

I assumed this was a bug in nautilus, however the same thing occurred in Chrome when I tried to re-arrange my bookmarks, and the same thing in gnome-panel. The only thing in common I see is gtk-window-decorator.

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