Fedora Installation :: Options Which Will Allow To Exceed The I386 Memory Limit?
Jun 25, 2010
I presently have Fedora 12 running on a Dell Optiplex with a Pentium 4 CPU. I want to buy a new computer, probably from Dell, I don't completely understand the options I have available for which Fedora 13 will run.I more or less understand what 64 bit means since I also have an HP with an AMD 64 bit processor. But are there other options which will allow me to exceed the i386 memory limit? How about dual processors?
I used to understand CPU architecture pretty well, but i've lost track of more recent developments. Can anyone recommend a primer of CPU types, including assoicated memory limits? Similarly, I would like to be sure that Fedora 13 will run on whatever machine I decide to get. So a list of available processors, which are equivalent to which, and which Fedora 13 has been tested on,
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Aug 3, 2010
We've used Exceed and Exceed3D X server software to run OpenGL 3D simulation software for a long time, and it has always worked great. Now, a new box that runs OpenSuSE 11.2 (kernel 2.6) shows terrible display performance with Exceed.
Exceed 10 on Windows XP works great for OpenSuSE 10 and earlier, but the same display platform grinds to a halt for OpenSuSE 11.2. We tried upgrading to the latest version of Exceed, version 14, but still no joy.
As an alternative, VNC works okay for desktop stuff, but just doesn't run the 3D apps like a dedicated server does (or should).
The reps at OpenText, the makers of Exceed, scratched their heads over this one.
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May 12, 2010
I have a VPS server with 512 MB memory. The php.ini is set so script memory limit = 16 MB. However, I have noticed in my top report, instances like the following:
Quote:
5484 coldclim 25 0 46476 32m 5920 R 0.0 6.4 0:00.93 php
The bold number of 6.4 is the % of sever memory this process is using. 6.4 % of 512 MB of memory is about 32 MB of memory, so it appears that this isn't being limited by php.ini. Am I correct? This leads to the next question: Is there some way to limit the amount of memory a single suphp process can use? (Basically, something like the setting in php.ini which limits suphp processes in the same way.)
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Jul 24, 2009
I have a few multi-user servers in an academic laboratory. I am having a problem with some users maxing out the available RAM, causing such sever slowdowns the machine essentially crashes. My servers are Dell Power Edge's running Ubuntu 8.10 Server Edition (Not my choice). I would like to set a maximum limit on the amount of ram a user can utilize. This morning I experimented with setting limits via /etc/security/limits.conf and using ulimit. Neither of them prevented my test program, a simple infinite loop of mallocs, from crashing the server.
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Apr 24, 2010
I've written a program for a class that my professor will be testing in various low memory environments to see how it behaves when the program runs out of memory. Is there a way I can simulate the execution in a low memory environment without creating a virtual machine?
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Jun 26, 2010
I have a 32 bit Ubuntu installed and my Laptop has 4GB RAM, but only 3GB is considered by Linux. My question is: what is the reason for the upper limit on physical memory ?
Code:
dmesg | grep Memory [0.000000] Memory: 3052428k/3112960k available (4673k kernel code, 56364k reserved, 2121k data, 656k init, 2200904k highmem) I am familiar with the virtual memory concept where linux splits upper 1GB for kernel and lower 3GB for user processes. In total, linux 32bit can address 4GB virtual addresses. Does this meant that 1GB of physical memory is already mapped to 1GB of kernel space and Linux only shows the remaining 3GB physical memory left for the user in the above command.
I did some searching on the internet and found some articles related to this, but it only confused me further since some articles suggest 4GB is the upper limit with mentioning whether it's virtual or physical memory, some bring in the concept of PAE, etc. I'm relative new to Linux's memory management, so it'd be really helpful if someone could answer this.
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May 9, 2011
When I run ardour sound editing I get this message , but it starts ok Your system has a limit for maximum amount of locked memory! This might cause Ardour to run out of memory before your system runs out of memory. You can view the memory limit with 'ulimit -l', and it is normally controlled by /etc/security/limits.conf
bash-4.1$ ulimit -l
64
my limits.conf is like this
audio - rtprio 99
@audio - memlock 250000
[Code]...
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Aug 13, 2011
I was looking into using control groups to limit the memory usage of each user on my CentOS system. I was told that this required me to recompile the kernel to have cgroup support. Is this true? Or is there a kernel module that will allow cgroups to work for users and groups on the system without kernel re-compile? Or, is there another way to limit the users memory usage? I have tried ulimit and it doesn't seem to work right.
I ask since this setup will be on a VPS system, that means to re-compile the kernel I need to use Xen instead of OpenVZ. Plus I have never in my life re-compiled the kernel, least of all with different modules ha ha ha so I would have to pay my NOC to do it. So if I don't HAVE to recompile the kernel to get cgroup support.
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Jun 9, 2011
I've checked gdmsetup and there isn't anything that I can see that keeps my general users from getting in remotely. I can get the Gnome to login as root but not as a user. SSH from PuTTY works fine for all users. The error I get actually says that the username or password is incorrect - checked using SSH and it is fine.
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Dec 22, 2014
How to limit access flash memory (read / write) for users on debian?
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May 28, 2010
I have an Ubuntu server running in our small office. Among its many duties is report generation. It uses PHP and DOMPDF (a PHP library for converting HTML/CSS to PDFs for printing). PHP's default memory limit of 32MB is not even close to being enough to pull large amounts of data from the database and generate images/tables/PDFs with that data.
I increased the memory limit to 64MB and that is adequate for reports under 3 pages or so (varies based on table complexity, images, etc). If any user tries to generate a report longer than that, PHP just throws a "out of memory" error and doesn't make the report.
My question is: what are the possible consequences of increasing the memory limit yet again to 128MB or maybe even higher? The server isn't terribly powerful. It has 2GB RAM and 4GB swap space. I know that isn't much but this is a small office and at most I can only see two or three people trying to run reports at the same time. As for security, apache is currently only serving pages in the local network, but sometime within the next year I'll probably have it hosting a public website (currently using a hosting service). Is a high memory limit a potential security risk when exposed to the internet?
EDIT: Sorry, PHP's default memory limit is 16 not 32 as I said. Question still stands, however
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Sep 2, 2010
I'm having a problem with setrlimit() under linux.
If i used setrlimit(RLIMIT_AS) to set a hard ceiling of virtual memory usage first, then request memory more than that, shouldn't i receive a signal like SIGSEGV?
First i tried the command ulimit in bash, which acted as if i called setrlimit(). i tried 3 programs that overflowed the memory limit i set. i though all the programs would be terminated by a SIGSEGV. but the pascal program received SIGKILL; the C++ program got SIGABRT› the C program, SIGSEGV.
I though there maybe something different between setrlimit() and ulimit, so i wrote a program in C++, fork() first, setrlimit() then execv() in the child, and wait(&status) in the parent. but i got the same result.
I was wondering why these could happen, and could anyone tell me how could i deal with them? i mean, how can i judge that the program exited abnormally because it exceed memory limit?
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Aug 4, 2009
Seven times I was downloading the fedora11 disc1 i386 iso and the sha256 checksum was bad. When I try ftp.belnet.be mirror I can get the correct checksum. I understand the copy process between mirrors probably was errors. Becarefull friends. This bad iso aborts the installation process.
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Dec 16, 2009
is there anyone who checked your downloaded file against the provided key? i have successfully downloaded the Fedora-12-i386-DVD.iso several times, but the SHA1 is not the one in Fedora-12-i386-CHECKSUM is there anyone who has the same problem? the SHA1 i calculated is: 0dc8ed436f0b44874454a379e8de5ad057c0115d
[Code]...
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Jan 16, 2010
i've downloaded this image from 3 different sources. checksums are verified. DVD image write errors out on Packagesus-pinyin-1.2.020090915-1.fc12.noarch.rpm has happened on 5 DVD writes so far has happened with Fedora-12-x86_64-DVD.iso also but on a different file. DVD writer can write other images no problem.
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Nov 4, 2010
downloaded the install dvd mounted it and ran it but I am getting an error line 55 of the kickstart file: section does not end with %%end install exited abnormally.
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Jan 15, 2009
Installing f10 on an x86_64 platform from CD or netinst. I can't seem to find a way to have it install i386 compatible (32-bit) software at the same time. Is there a repo that has to be enabled? In f8 i think it was just a box to click somewhere.
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Apr 18, 2009
I would like to try out fc10 on an old, k6-2 pc. Last night I tried to download the dvd, but firefox 'completed' the download with only 1.2/~3xg, and of course it didn't work.
I am trying a test net installation in VirtualBox, so far so good.
However, I would rather have a more complete installation on hand and I'm looking at the full install cd's --there are 6 of them.
[url]
Are all 6 required for a minimal install, or could I get by with one (or two, etc)? For example, with debian installation cds you can use just the first one -- the rest are just a complete set of packages for everything +kitchen sink.
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Jul 30, 2009
I need to install it on laptop along with linux, which of the two files should i download and burn?
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Nov 14, 2009
I have VISTA home installed in my HP DV5 laptop and I have installed MS Virtual PC. When I try to install Fedora 11 i386 get stop at "SMP alternatives: switching to UP code" and won't proceed.But I installed Fedora 11 i386 in my desktop using same steps it work fine.
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Jul 24, 2009
I'm currently using FC 9 - 2.6.27 x86_64. (In my Hp - nx6320 laptop with- Intel centrino Duo processor). I have downloaded linux-2.6.30.2. How do I install this with i386/i686 configuration set. All that I want is a 32 bit - linux-2.6.30, because NCTUns 5.0 works only with the 32-bit kernel. I have tried following:
Code:
make ARCH=i386 menuconfig
After this, I see the architecture set to "X86_32 = Y" in the .config file. But later, after I run
Code:
make bzImage
The configuration restarts asking to select Y/N for various packages and modules. I have no much idea on what to select and what not to, in order to retain X86_32 set. I end up with the new .config file with contents as below after the make bzImage command.
Code:
#X86_32 is not set
X86_64 = y
Again it is going to be built as a X86_64 bit kernel.
How to install the kernel as 32-bit along with the existing FC-9 64 bit kernel.
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Feb 24, 2011
Is there a live booter iso of Fedora 14 for i386 architecture?
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Mar 19, 2010
So I have the burned ubuntu CD, and I'm attempting to install it on a system that has one HDD with XP/Vista on it, and another that is completely formatted and unpartitioned. However, when I boot to the ubuntu CD, I can use the menus from the bottom, and select the language when initially prompted, but I can't select any of the menu options except for boot from first hard drive.
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Aug 21, 2010
I have a pc trying to install fedora. It is an amd downloaded and tried to install different versions of fedora. The latest i686 and will get to a boot screen and when selecting boot will lock up at the i386 start kernal command and blinky curser. Yes I am new to linux and may need some hand holding. I have however successfully installed fedora on other computers a while back which is why I am not sure what is going on. It may be a hardware mismatch. I will try to see if I can find another computer to install. I used a different computer and is working. The athlon computer is not working.
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Aug 21, 2010
I was following a simple tutorial on how to program and compile a hello world program using assembly when I got this error;Quote:ld: i386 architecture of input file `hello.o' is incompatible with i386:x86-64 output.The tutorial told me to make two files;Quote:hello.asmsection .data;section declaration
msg db "Hello, world!",0xa;our dear string
len equ $ - msg ;length of our dear string
section .text;section declaration
[code]....
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Jun 16, 2011
I have windows7 with partition of C:40G, D:40G, E:70.I want to install fedora15,so I use the tool "Disk Management" of win7 to shrink E:.Then I have E:60G and 10G unallocated.
I use Liveusb-creator and boot from usb.It works well and I can use fedora15 just like livecd.But when I install fedora to hard disk,I meet a problem and I don't know how to solve it.
The installation procedure comes "Which type of installation would you like?".There's five options 1."Use All Space" 2."Replace Existing Linux System" 3."Shrink Current System" 4."Use Free Space" 5."Create Custom Layout".I've already got 10G unallocated space,so I select "Use Free Space".But the problem is that the fedora installer popups a messagebox says something that means that I don't have enough space to allocate to fedora15.
I come back to "Which type of installation would you like?" and select "Create Custom Layout".The installer display 4 entries of my hard disk:sda1 unknown 0M, sda2 100M windows remain partition, sda3 with capacity 39900M, sda4 with capacity 112625M.The partition display of my hard disk is so strange and there is no free space.
Is the problem of win7 "Disk Management" or "Fedora Installer"? How can I really get some free space to install fedora15?
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Jul 8, 2011
I am running the RedHat 7.3 install off a CD to put the system on an IDE flash drive. The flash drive appears as /sda1 on my system during installation. When I install the bootloader from the install CD it gives me the option of MBR on /hda which I do not want do. I select /sda1 and it puts the bootloader on first boot sector (not the MBR?) Although the installation works, is what I am doing creating a bootable primary hard drive? The flash IDE drive needs to be installed in an embedded system so my installation options are very limited i.e. the system does not have a CD-ROM or floppy to boot from. Are there options to put GRUB on the MBR of /sda1 during installation? Such as, with fdisk or the "force disk primary" option? Or, doesn't it matter?
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Mar 31, 2010
i am running windows and fedora 12..both are working smooth...today when i switch on the laptop in morning i discovered that it automatically start windows..when again i restart it..it does not give any option to me for selecting which OS to run..i have seen grub.conf file it is right...i have done nothing...windows is booting smoothly..how can i boot to fedora 12 without reinstalling.
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Feb 17, 2011
Been a while since I've been on here, but I was using Fedora 12 for the longest time and only recently started having problems. I kept getting errors and pop-up dialogs telling me to run yum-complete-transaction, which I tried as root many times. It would then give an error that it couldn't locate the repository and such. So, I looked through all my yum config files and changed a few things until I FINALLY got the command to do something, only it did all kinds of strange things as I was running low on EXT3 disk space and using old Windows' partition to store a lot of things on.
Now, I backed up all the /home directories and files as well as /root, just in case this didn't go smoothly and I still ran out of disk space. If I had the money, I'd buy a storage stick and just back up everything, but that's not an option at the moment. Now I have a crippled version of XP (pretty much useless from a trojan, even though I had McAfee AND Windows Defender running), and half of Fedora 12 with 2 different boot images! When I first did this, I used a 10G partition to install Fedora, which was plenty then. What's left of Win still resides on about 65G of space, but I have a lot of files there I want to keep. Fisrst thing I want to know is, should I look anywhere else on the Fedora disk to find files I may need, just in general? There's still a LITTLE space on the drive to back up stuff if I need to.
Second, while I still had enough to work with, I managed to download and burn a F14 Live CD, which is running now. I saw the option on the desktop to install it, and can get my config files and such from the backups if need be. I do NOT have a DVD burner, so if I have to I can use regular 700MB CDs, but only if they are available.The next thing I need to know is if I can install F14 from the web, without having to download any more ISOs, (again, assuming they are available). I know all my DSL settings so that's not a problem, I just need to find out if I can install it that way before I go clicking that icon. Anyone with experience with this would be helpful. I'm ready (MORE than ready) to go through with it, I just don't want to get "stuck" once I start the process. My download rate is around 200k/sec, so it's going to take some time no matter which way I (can) go.
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Apr 8, 2009
Has anyone EVER been able to run this particular command? Well I seriously need to run it for the gdm installation on my system. How to specifying the the url to get that package_file? I installed this system from the fc8 live cd -- are the files I need on that disk?
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