General :: Fork: Resources Temporarily Unavalbale?
Apr 30, 2010I am continuously getting fork: resources temporarily unavailable even when I am typing ls command.
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CentOS 5 :: Fork - Resource Temporarily Unavailable
Sep 11, 2009I installed a while ago two CentOS 5.3 servers. One of them was running Samba and another OpenLDAP. I configured Samba to act as a PDC on the network and everything was working fine. I was already on policies configuration and desktop migrations.
The following problems are Samba server problem, LDAP server is on hold until I figure out the first problem.
Software conf:
Hardware conf:
One day, both servers began crashing, and after a while, it showed the following during the boot on Samba:
After that, ALL CentOS installations had this problem after yum update, epel installation and some smb.conf modifications:
I figured out it might be EPEL (i did installed yum-priorities and tryied updating the base sistem BEFORE epel installations), so I installed the system without EPEL yum repository. After some good and relieving 15 min working, the system crashed AGAIN after yum base update and showed the following on boot time:
And it stops right there.
Maybe some wrong kernel update? the first time it crashed in one way, with running updated system (After the first update, no manual update was done). The sequel problems were all after Kernel update and EPEL. The last one was just after Kernel update. I'll try one last time with NO updates, but i can't run the system like that.
I can't do anything that might one day crash, it's a 6000-7000 user gov environment, but i don't want to install another distro, so if I don't figure it out, they will order me to.
Server :: "fork: Resource Temporarily Unavailable" For Certain User?
Jan 4, 2010I have a machine running on RH with 4G memory and 8G swap.Just now I'm having a problem when loging in with a user - just call it "userX" -.Each time I'm logged in I got a message Code:-bash: fork: ource temporarily unavailableAnd almost everytime I entered any command, it gives me the same warning. In some time (rarely) it will give me proper result, but almost any time it gives me the warning and no result.When I use 'top' command, it shows that I still have 500M free memory and about 8G free swaps. Plus the process for userX is less than 20 processes, and each of them are short processes (less than an hour, mostly just few seconds).As a note this problem only occur on userX, for any other user on the machine everything works just fine.
View 6 Replies View RelatedGeneral :: How To Use Fork In My Programme
Aug 31, 20091) Write a C program using the fork() system call that that generates the Fibonacci sequence in the child process. The number of the sequence will be provided in the command line. For example, if 5 is provided, the first five numbers in the Fibonacci sequence will be output by the child process. Because the parent and child processes have their own copies of the data, it will be necessary for the child to output the sequence. Have the parent invoke the wait() call to wait for the child process to complete before exiting the program. Perform necessary error checking to ensure that a non-negative number is passed on the command line.
2) Repeat the preceding exercise, this time using the CreateProcess () in the Win32 API. In this instance, you will need to specify a separate program to be invoked from CreateProcess(). It is this separate program that will run as a child process outputting the Fibonacci sequence. Perform necessary error checking to ensure that a non-negative number is passed on the command line.i have done with Fibonacci sequence .but i dont know how to include tht fork() function and win32 api .any one can help to finish?
General :: Fork Process Will Not Exit - Ksh
Aug 19, 2010I've a script that forks to another script.
The problem is that the child will not return to main process.
Main script "fork.sh"
Code:
The child process "smb_fork.sh"
Code:
when running it from the terminal "sh -x ./foork.sh"
Code:
My goal is via cron connect to ~100 remote winXP computers and download a single file. There fore I like to fork the process.
General :: Regarding Fork() Multiple Process?
Aug 2, 2011trying to fork multiple child but the program does not go as i want...
My code :
Code:
#include <stdio.h>
#include <sys/types.h>
#include <unistd.h>
[code].....
General :: Fork() Always Return 0 Even In The Parent Process?
Mar 18, 2011my code is very simple:
int pid, status;
printf("parent process id=%d, to call fork
",getpid());
if(pid=fork()<0)
[Code].....
but everytime I can only get two fork return pid=0. In parent process, the pid returned by fork() should be >0 and equal to the child process id.
General :: Using Fork() To Create A Binary Tree?
Sep 26, 2010I am working on a project where I need to use the C language to generate a tree of processes. I understand how fork() works but I cant seem to get fork() to create two children from one parent and then have the two children create two more children.
Right now what i am seeing is a chain...where the parent creates one child...and that child creates another ONE child..etc.
Here is what I have so far:
for (i=0; i<n;i++){
if (childpid = fork()) break;
}
if (childpid == -1){
perror ("
[Code]....
General :: Single Process Firefox (Disable Fork)
Aug 31, 2010I would like to run versions of Mozilla Firefox 3.6.5+ as a single process, just as it was in versions 3.6.3 and prior. The reason is that, on Linux, I am running within proxychains - which doesn't bind to forked processes. Because the plugins in versions 3.6.5+ run in a forked process I can't use proxychains to redirect Flash streams. Is there a setting in modern versions of Firefox that allow me to run plugins in the main process?
View 1 Replies View RelatedGeneral :: Stat File For Permissions - Fork() Or Execve()?
May 6, 2011When a application is ran from the shell:fork() is calledexecve() is calledI know the shell stats the file to make sure the required permissions are allowed in the child shell. But I can not find this in the man fork. Nor can I find this in man execve. Which one of these processes/calls stats the binary to be ran?
View 1 Replies View RelatedGeneral :: Fork Behavior While Copying File Descriptors
Jun 17, 2010I am quite confused about the following description on fork. Could you please explain it ?The child process shall have its own copy of the parent's file descriptors. Each of the child's file descriptors shall refer to the same open file description with the corresponding file descriptor of the parent.For example, I am opening a socket and then fork. Now, does the child have a separate socket or is shares it with the parent. Does I have any impact on using it in child?
View 2 Replies View RelatedGeneral :: Temporarily Broken Bash?
Jun 14, 2010i was fiddling with some new commands i learned and typed something weird. Then bash broke on me for a while. here's the command i typed while in /bin bash > lessi believe i was in "sudo su" as the moment. i want to understand this because when I typed it bash didntork. i tried to type "ls" after and it didnt result in anything.but thats not all it didnt receive any commands.Was this a crash? and why/how did it fix itself after i logged off.
View 9 Replies View RelatedGeneral :: Comparing Resources Using Top?
Apr 6, 2011Fedora 15 Alpha
3861 user 20 0 904m 128m 33m S 0.7 6.4 1:11.52 xulrunner-bin
1323 user 20 0 1555m 95m 31m S 13.5 4.8 4:06.87 gnome-shell
3494 user 20 0 1028m 50m 21m S 12.8 2.5 1:43.32 evolution
I just wondering what is the difference between RES, SHR, and VIRT.
1) The VIRT always seems to be higher. Is this using the paging file system. (virtual memory on the harddisk, the swap memory)
2) Is the RES memory the actual physical RAM memory?
3) Is shared memory sharing memory with other processes?
4) Just a final question. As I am running on a HP Mini 210, memory and CPU is a resource I don't have a abundence of. So if was to compare for example 2 difference browsers i.e. firefox and midora. What should I brench mark between to 2 to find what one uses less resources?
General :: Removing / Disabling Firewall Happens Temporarily
Apr 16, 2011I tried following the instructions in this link to disable and remove iptables firewall using commands:
# service iptables save
# service iptables stop
# chkconfig iptables off
# iptables -F
# iptables -X
# iptables -t nat -F
# iptables -t nat -X
# iptables -t mangle -F
# iptables -t mangle -X
# iptables -P INPUT ACCEPT
# iptables -P OUTPUT ACCEPT
Its seems to work temporarily and then the firewall gets enabled again by itself even without restarting.
General :: Setting ACL For A Temporarily Mounted Directory?
Sep 8, 2011I wanted to set ACL for a directory. For that it is important that the device should be mounted as acl on that directory.
But I do not want to add the acl mount in /etc/fstab. So I am tempoararily mounting the device to some temporary directory as acl and setting ACL and then unmounting it. Then, I'm mounting it to the original directory.
The code is below:
tmp="/tmp1/backup"
orig="/mnt1/backup"
dev="/dev/sda2"
mkdir -p $tmp
[Code]....
The group is being changed, but ACL is not set for the directory.
General :: Temporarily But Completely Uninstall Ubuntu 10.4?
May 24, 2010How do I temporarily but completely uninstall Ubuntu 10.4? I can't locate it in my registry, either using RegEdit or Revo Uninstaller. This is temporary. I will re-install on a different computer of mine that has much greater memory.
View 4 Replies View RelatedGeneral :: Temporarily Prevent FTP Uploads From Certain Accounts?
Feb 10, 2011What is the least painful way to temporarily prevent uploads to an FTP server by certain accounts? they all only upload directly to their home directory setup in /etc/password
View 1 Replies View RelatedGeneral :: Sharing Resources Across Processes ?
Jul 7, 2010How would I demonstrate that sensitive application resources are not shared across processes that are owned by different users?
View 2 Replies View RelatedGeneral :: Temporarily Disable Internet Connection On System
Jan 20, 2011Is there any way to temporarily "switch off (and back on)" the internet connection on a system (that runs linux)? The following methods are not allowed:Turning off the router. That would lead to a lot of angry young individuals. This method must be particular to my workstation.Use root privileges (coz I do not have them).
Yank the ethernet cable from the system.Why: Sometimes the internet proves to be a distraction.I am using the following system: Fedora release 11 (Leonidas), linux kernel 2.6.30 and GNOME 2.26.3
General :: Permissions - Temporarily Remove My Association With A Group?
Jan 21, 2010I need to test linux group permissions on a repository. In one shell, how can I temporarily remove one of my group associations? e.g.If my groups are defined as:
% groups
foo bar baz
How can I make it so it only returns foo bar without baz?
General :: Minimalistic Distro For Low Resources Netbook?
Jun 5, 2010I want a distro I can run on my very weak netbook, and perhaps on one or two other of my other computers as well. Netbook is an Asus eeePC 900SD (Celeron 800mhz, 512MB RAM, 8GB SDD, 1024x600 screen resolution), very slow with some distros, but nimble with others.
I've tried:
Ubuntu Netbook Remix (EasyPeasy), Leeenux, JoliCloud: too resource hungry on this machine, too much storage consumed just for the OS. Peppermint OS - pros: works well, nice, very few bugs, fast.cons: space requirements, memory requirements make it a bit tight, cloud apps are slower than locally installed ones, the permanent inclusion of a paid-subscription cloud app, and fascist support forum moderators. a bit overweight, and way too cloud-centric - many of the cloud apps are on unreliable servers and not always available or slow down your netbook to a crawl while it waits for some executable code to come off the web. Puppeee version 1.0 (and Fluppy for all netbooks), works very well, very fast, in little RAM with little disk space required. Some may not like the overcrowded menus and their structure that's inherited from the parent Puppy. Puppy 5.1: works very well compared to the 4.3 series. wifi works now. But same menu comments as for Puppeee. Slitaz: at 30MB for the iso, it sounded promising, and the interface is very nice, much nicer than any of the other minimalistic distros. but Wifi? no help on the horizon.
AntiX: some stuff just didn't work properly, including Wifi WPA. but it looked real good. For the space and memory requirements look to Peppermint. TinyMe2010: this is the size of Puppy, and polished like Peppermint. Based on a slimmed-down Unity, it is still in beta, the installer won't install from USB stick. If you have a CD to install from this is a great distro! Lets hope they fix the USB issue soon! Very promising... keep a watch on this one.
[Code]...
I've tried dozens of distros, and find it frustrating to deal with the various crippling flaws of some distros and the egos of the assemblers of other distros (where they can easily fix something but refuse to because they prefer an older faulty way). I am at my whit's end here. Please help me someone.
From us Noob's point of view: the new re-release of Windows XP for Legacy computers with only 64MB of RAM, it may be time to re-visit our thinking that minimalistic Linux distros are the only kid on the block for those slower machines with less resources. Time to get back to the drawing board and make these a little more user-welcoming. ;-)
General :: Temporarily Throttle Internet Connection For Testing Purposes?
Mar 16, 2009I would like to know if it is possible (and, if so, how I would go about doing so) to temporarily limit my Internet connection on a Linux box.
I am developing some new features for one of my Web sites, and I want to see how it performs when using a slower Internet connection. Although it's great for most aspects of my job to have a lightning-fast connection (around 25000-30000 kbps download and 20000-25000 kbps upload speeds), it really makes it difficult to know even what average users might experience when using some of the aspects of our Web site.
I have Linux Mint installed in VirtualBox on my computer, and I'd like to find some way to potentially temporarily "trick" that installation into using a much slower connection to the Internet for testing purposes.
General :: Automatically Kill Processes That Over Time Uses 95%+ Of Resources?
May 3, 2010I don't know about your computer but when mine is working properly no process is sucking 95%+ over time. I would like to have some failsafe that kills any processes behaving like that. This comes to mind because when I woke up this morning my laptop had been crunching all night long on a stray chromium child process.
This can probably be done as a cron job, but before I make it a full time job creating something like this I'd thought I should check here. :) I hate reinventing the wheel.
General :: Accessing VPN Resources In Windows Guest From Host
Nov 4, 2010I have a Ubuntu hosting a Windows XP box (using VirtualBox). The Windows XP box is connected to work using Check Point VPN-1. Essentially this enables me to go to my Windows box and do something like ping comp-at-work and it just works.
I would like to access the VPN resources from the Linux host though. The Windows guest is only there because the VPN client isn't working in Linux. If I could somehow ssh from the Linux host right into my computer at work (using remote desktop would also be great), that would save me a lot of round trips between my Linux host and the Windows guest.
General :: Termination Of A Process Release File And Other Resources ?
Apr 15, 2011If I forget to close a file, a socket or any other resource in a Linux process, and the the process terminates, will those resources be freed? Is there a difference if the process terminates normally or is killed?
View 3 Replies View RelatedGeneral :: Force X To Re-theme All Open Windows To Current X Resources?
Aug 24, 2010I've got a ~/.Xdefaults that has a specific color theme defined for Xorg, and this works. I've got a ~/.XdefaultsNew that specifies an alternate color theme. Xorg starts and loads ~/.Xdefaults which is correct. After running some applications, I run
xrdb ~/.XdefaultsNew
This overrides all my X resources to the new defined values (correctly). If I open a new window, the theme is seen correctly. However, all the previously opened windows retain the original theme.Is there a way to force X to "re-theme" all windows it is managing with the currently loaded X resources?
Programming :: How To Use Globals When Using Fork
Sep 16, 2010As part of my ongoing project I need to put together a messaging server of sorts. So far I have coded a server which accepts multiple connections, which then runs a function that will perform a task, see below.On this sever I have a global structure which is populated using the data found in a read() buffer. However with each fork() that runs the below function each process is handed a blank structure. How could I go about allowing each fork() child process access the same structure?
My code should hopefully show what I am trying to do?
Code: void listen_for_client(int sock)
{
[code]....
Programming :: Can't Run Second Child In C (Fork)
Apr 10, 2011Now,I created one parent and two children. I must create some value as random in child1 and child1 has to send these values to child2.Child2 must read them.. now,I cant create some random values and i can send them.But child2 doesnt work. I have two functions. One them is writing, another one is reading. Child2 uses reading function,but it doesnt work (child2 cant call it, because writing function in endless loop) What i must do? I used wait,usleep... No way.. I attached my file and also there is code..
PHP Code: #include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <signal.h>
#include <stdarg.h>
#include <sys/types.h>
[Code].....
Fedora :: What Is The Cdrecord Original Fork Status
Feb 10, 2010I realize the information found here is potentially biased, but it made me curious where Fedora stands. Now that even Debian has agreed to distribute the original fork of Cdrtools, is Fedora considering that option? Several other distros are distributing the original fork now, and it's where active development is ongoing.
View 6 Replies View RelatedProgramming :: Fork/exec Versus Posix_spawn
Sep 30, 2010Just coming over from Windows here... where I've been using "CreateProcess" which returns a value depending on whether the process was created successfully or not.
Now I'm trying to create a process on linux and I've been learning about fork/exec, and I've been struggling with the fact that there seems to be no easy way to know (within the original parent process) if exec succeeded or not. (without forcing the parent process to hang around polling it or something).
Anyway, I've now just discovered the posix_spawn function, and it seems exactly what I need. However I'm finding the documentation a little hard to understand. In particular, I can't find actual confirmation that it will definitely return an error if creating the process fails (like CreateProcess does on windows). So can anyone confirm that for me?
The text on the documentation states: "If posix_spawn() or posix_spawnp() fail for any of the reasons that would cause fork() or one of the exec family of functions to fail, an error value shall be returned as described by fork() and exec"
This makes me think it uses exec/fork under the hood, and so I wonder if it can be trusted..?
And also, most of the examples on the internet for creating processes use fork/exec, so I wonder if there is some catch with posix_spawn I haven't read about... (since it seems a much simpler way of doing things)
