Software :: Java "Could Not Reserve Enough Space For Object Heap"
Sep 12, 2010
I'm having trouble setting Java up on my virtual private server. It works fine when running under root, but if I run it under a normal user account I get this error message:
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Presumably the memory allowed to be used is being limited, but I can't figure out how to change it. I've tried adjusting the -Xmx argument, but the highest value at which it will work is 18MB, which is not enough.
This is the ulimit output for the root and user accounts respectively:
Code:
Code:
I suspect the problem is due to the virtual memory, but there doesn't appear to be any way to set the value in limits.conf. If I manually lower it to 200000kB under root I get the same error message.
I'm using Red Hat x86_64, kernel 2.6.18-028stab070.2.
In gparted I have the following stats for my /home drive
size: 824 gb used 75.51 gb unused 748.59 gb
Now when I view this in nautilus it shows something else: remaining free space as 709 gb. My question is what happened to the 40gbs? the 75.51gb are my files, but where did the 40gbs go to? Because 709 (total remaining) + 75 (my files) + 40 (mysteriously lost gbs) = 824gb. When I first made the partiton, it was a 824gb partition and ubuntu had automatically at that point reserved about 40gb for something. Does anyone know why Ubuntu reserved this space?
I want to create a Java Servlet that will interface with a shared object (.so) library. The library is a component provided by a SDK manufacturer. This Java Servlet will be hosted on Apache Tomcat running in the Amazon Web Service (AWS) Cloud.
Groovy is an object-oriented programming language for the Java platform. I do not have experience in Java, only perl and shell scripts. Recently I have been asked to maintain a software written in groovy (also to make enhancements). So can I learn groovy without knowing java language. or isit I have to learn java before venturing into groovy.
I've been using the PPA version of banshee, and I got this error - just wondering if anyone else has it too! I'm able to play a song, but when the song finishes and the next one starts I get this error: Banshee Encountered a Fatal Error Object reference not sent to an instance of an object Error details:
Code: An unhandled exception was thrown: Object reference not set to an instance of an object at Hyena.Gui.Theming.GtkTheme.GetCairoTextMidColor (Gtk.Widget) <0x00017> at Banshee.NotificationArea.NotificationAreaService.get_TextLightColor () <0x0002f> at Banshee.NotificationArea.NotificationAreaService.MarkupFormat (string,string[]) <0x00043> at Banshee.NotificationArea.NotificationAreaService.GetByFrom (string,string,string,string) <0x000d7>
I'm searching for an algorithm to sort a binary min heap tree. That's when in root i have the smallest value in the tree. The only restriction it has, is that the parent must be smaller the its two children. i think something like quick-sort, but i don't know how to implement it.
Is there any maximum limit to the heap memory allocation?My program is in PERL and i am using a solaris system. when i did "pmap pid" (pid = my process id) it is showing a number of heap memory allocated and all of them with GB sizes. This single process is eating up most of the physical memory.Is it normal and is there any way to get the heap memory size down
I'm wondering what's the maximum heap space a process can use (not necessarily by a single malloc()) in Ubuntu x86_64. Which parameter determines the size
Only ones I can think of seem overly complex, and I'm sure there is a simple solution I am overlooking. I have a class, it has a member who is an object. This object needs to be able to represent an object of different types.
[code]...
Where "surface" could be several different types, which will be set during execution. Hope this is clear enough. I have tried using templates but am getting "data member cannot be a member template". Either I have incorrect syntax, or am not implementing it right. another solution would have one class containing definitions of all possible shapes, But this would take up extra memory. Other solutions I thought of seem too round-about, and seems there is a simpler solution that I have overlooked.
I am trying to find the dyanmic heap size and stack size of a running process in rhel5.5 and rhel6.I read that the 23rd parameter in the file /proc/pid/stat gives the heap size.Can you elaborate more on this.Also is there any other way to do this?
That's the message I see briefly right before I am booted into Ubuntu Meerkat. It's right after the boot menu and the boot into Ubuntu begins and the screen is still black when that message appears.
I run a few programs that are very resource intensive, and although my computer has 4 cores, it keeps "freezing": it still works, I can see that my downloads keep on going, it's just too slow to show me a terminal screen so that I can kill whatever program got out of line.
It may be a bit complicated, but I suppose that there should be a way to do it: how can I keep some "cpu usage" from being used? I don't know, maybe reserve a core for management? Or throw the problematic programs in a "box" of limited processing power?
I'm sorry if this is a really dumb question, I'm a bit of a noob, but that would help me a lot. Of course, if someone has a better suggestion for my problem, I'd appreciate it very much.
I have several environments in which I am using Thin Clients as terminal emulators to Red Hat servers. I have been deploying Thin Clients for the past few years to replace old WYSE dumb terminals. One problem I am having is that the dumb terminals were serial so they were on a specific tty port. The Thin Clients however connect on the first available pts port, I really don't have control over the port each Thin Client connects on, other then possibly making sure they are always started in a certain order, which isn't a feasible option. What I am wondering is if anyone knows a way to control which pts port a thin client connects on; I'm guessing it would have to be by hostname or IP, I just can't figure out how.
I'm trying to install plymouth on my Debian 8.2 Jessie (Stable), but when I boot my pc I get this error:
Code: Select alluvesafb: cannot reserve video memory at 0xdf000000
This is my configuration:
Code: Select allcat /etc/default/grub # If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. # For full documentation of the options in this file, see: # info -f grub -n 'Simple configuration'
I am somewhat familiar with SGE (Sun Grid Engine, now Oracle Grid Engine) commands but am having a problem when running parallel jobs.
Present Machine configuration: machine I - 12 cpus machine II - 12 cpus machine III - 12 cpus .... so on ... One_machine - 16 cpus
(I have all machine of 12 cpus and 1 machine having 16 cpus)
I want to schedule jobs on these machine such that if I ask for 12 cpus - my jobs should execute on any of the machines which has all 12 free cpus (eg machine I or machine II) in this case.
Eg. suppose I ask for 24 cpus
Option I : 12@machine1 12@machine2 ----- I need this
Options II : 10@machin1 10@machine2 4@machine3 ---- I don't need such a distribution
Hence, Option I is ideal here. Also, when running 12 jobs on machine1 (say) - even if all 12 cpus are not being used at some instance of time, none of the 12 cpus should be freed. In short, until my run finishes, all blocked cpus should remain blocked.
If you may understand, the purpose here is to run some performance tests.
Logical Memory Space of 4GB is divided in to 3GB User Space and 1GB Kernel Space. Always. Correct?
1. How can we change it? (just changing value of PAGE_OFFSET is okay?)
2. If system have only 256MB of memory (embedded system) and suppose Kernel Modules eat away all the memory during boot. User space will be left will no memory. Is this case possible?
I'm using a slack 13.37 version and this message is occuring during wine apps running:
preloader: Warning: failed to reserve range 00010000-00110000
Instead of being only a warning, I think it's breaking down and don't know exactly it's a wine or OS problem.
Googling point me a wine problem,
url
and another Ubuntu and Wine topics .
url
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But I'm in a 32bits option ( no multilibs ), my wine, dependencies packages and procedures are the same installed before in 13.1 . Just system was changed! Anyone have any info on that sytem or wine problem?
I've just installed java (jre-6u21-linux-i586.bin) on Red Hat 4.4 AS and issued this command to check the java version: java -versionand got :bash :java: command not found
I updated my laptop to 10.04 earlier today and it worked fine but it was being a bit glitchy so i rebooted my laptop and it worked fine until it showed an error saying "cannot reserve MMIO region".
I try to install the java plugin but the java test pages show not installed. I have tried the openjdk-6-jdk package and the Oracle/Sun 1.6.0_26 version to no avail.
Is there some good instructions page someplace? I have yet to find a set of instructions that provides something clear that works.
Code: ~ $ /usr/java/jre1.6.0_25/bin/java -showversion Error occurred during initialization of VMjava/lang/NoClassDefFoundError: java/lang/Object
That's the error I get. When trying to run a java app with the firefox plugin, the browser simply crashes if it's the 64bit java or tells me it's not installed if it's the 32bit version.
I'm at a loss as to what to do. I think it has something to do with leftover gunk from a previous version I misinstalled(Is that even a word?) Anyway, the only thing that google could come up with was a solution for windows which laid blame on Bill Gates for having a bunch of pf (java prefetch) files stuffed into c:windows for no apparent reason. The solution was to delete them, but I can't seem to find the java prefetch folder in linux. The method I used is downloading the rpm from java.com the rpm2tgz then installpkg then cp libnpjp2.so to firefox plugins folder.
This is my first post and I'm pretty new on Debian. I had used Ubunu for a while now and I've decided to move on Debian Squeeze.But I've one problem: I've a Java programm to install and the installer is GUI Java based. When I run the script, I've the next message:
Preparing to install. Extracting the JRE from the installer archive.Unpacking the JRE.Extracting the installation resources from the installer archive.Configuring the installer for this system's environment.Launching installer Graphical installers are not supported by the VM. The console mode will be used instead. Preparing CONSOLE Mode Installation. But this program is not able to run the installation in console mode.
I've tried to install sun-java6-jre but without success.Has anyone an idea to help me install this programm? My Configuration: Debian Squeeze 6.0 amd64.
Java is installed in linux machine and when I enter the command java -version it shows java is not found.At the same time when i run from the folder where its installed with ./java -version it works.
first of all why its not working from any other place? also why do I need to give ./ from the folder?
If you are interested, Java SE 6 Update 24 is available. The Check Java Version link in my signature will tell you if you are up to date or not. The Update Java Version link in my signature will tell you how to obtain and install the latest version. The 32 bit version install directions are on the left side of that page and the 64 bit instructions are on the right side.
Just remember to remove the current version before installing the new one as it says in the instructions. The remove instructions are below the install instructions. Also, in Step 9 - "Now you'll want to tell the system, that there's a new Java version available." See the note below it that says if you get an error upon entering the command once, enter it a second time. I have to do that and sometimes forget. Just thought I would mention that. These instructions are already setup for version 6 update 24, but they can be modified for any update and they will work. I have been using these instructions for a couple of years and they work.
