How can we run the linux process like tar on multiple core? For example if we want to build the kernel we can use -j4 to distribute process of 4 different core. Is it possible to run long time consuming process on mulitple core?
View 1 RepliesAssume someone bind a particular process to a particular CPU core(In multi core machine) by using sched_setaffinity() like functions. Then how we can get that process running core id and CPU core utilisation of that process on that running CPU core(Pragmatically or by a Linux command)?.
View 5 Replies View RelatedI have a process running on Linux.When i do ps -eaf | grep <myProcess>, it show muliple entries for <myProcess> with different pids for each entry.Kindly tell me what could be the reason for a process having multiple pids?
View 1 Replies View RelatedIn my program, I fork() to get a child process. Because of some problem, child process terminates by a segmentation fault. Parent process is still running. I have compiled my code with -g option. I have done: ulimit -c unlimited. I am not getting core dump of the child process. How can I get the core dump of child process?
View 1 Replies View RelatedUnix command that allows to know which process is running on processor core?
View 2 Replies View Relatedtrying 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].....
I have some random files in a folder. I want to rename all of the files in a batch process. I have a text file that contains the Currentname of all the files in the folder, as well as a text file with all of the Newname of files in the folder. I want to replace Currentnames with Newnames.
For example, here are the names of the files in the folder:
1.mp4
2.mp4
3.mp4
I have a text file with the Currentname of all the files in the folder:
1.mp4
2.mp4
3.mp4
I have a text file with the proper Newname of the file:
a.mp4
b.mp4
c.mp4
I want to rename Currentname with Newname in the folder. So when I go to the folder the Newname of the files are:
a.mp4
b.mp4
c.mp4
To see if an application is using all the cores in a system, I wanted to identify which process is running on a core at a given time. Is there any way to get that information?
View 3 Replies View RelatedI`m looking for solution. Is it possible to run process on 1 core in UNIX ? From time to time I must start some very CPU consuming process and unfortunately this process is running on all cores... so at this time working on PC is very hard.
View 3 Replies View RelatedFirst post from a very new Linux user....I am trying to create a BASH script that will allow user to provide multiple directory names, Checks if the directory exists and if not create the directory.
I am using the following code:
Which works fine as long as the user enters a single directory name. How can I modify this so it will process all directory names user enters on the read response?
My system has Intel Xeon 4-core cpu(hyperthreading 8-core) and run 64-bit linux. I want to allocate one core for general process(kernel process & other processes). And then, I want to allocate the rest of core for the specific multi-thread program.
Q1: I know that I can pthread_setaffinity() for user-mode thread and mpstat for monitoring. So, how can I allocate a core for kernel process and monitor it?
Q2: How can I restrict use of the cores for the multi-thread program? I don't want kernel process to use the cores for the multi-thread program.
A process from some software I am running keeps crashing with seemingly no real pattern. I ahve tried using ddd/gdb to run the process in question but everytime it crashes no useful information is returned. I also tried getting a core file with the same result. It seems as though according to linux the program has exited normally.
This obviously points towards the process itself having a bug but there are other instances of the same program running on other machines in the network with no problems at all.
I have made comaprisons of hardware/drivers (lspci etc) installed on various machines and all are exactly the same as the machine in question so my question is (at long last): What else should I be looking for?
I have created a simple download schedular with source-code give below :
---------------------record_strokes.sh-------------------
touch /home/student/packs/lynx/logfile
lynx -cmd_log /home/student/packs/lynx/logfile
[code]....
I recently read in a forum that by default the Linux kernel only activates one of two cores in a dual core processor. Searching online gave one option to find out and that was the mpstat command. I therefore ran the command and got the following output.As the result says, it shows only 1 cpu. I was wondering what I could do to activate both cores in my machine, and whether doing so was going to cause me any problems.
View 14 Replies View RelatedObviously Nagios will page out once for each host and service goes down. But, is there a way to configure it to page out once, kind of like "Hey, LOTS of stuff just went down." Rather than 200+ individual pages?
View 1 Replies View RelatedWhenever I monitor my CPU's, it seems only the first is ever utilized, with the second always being at 0%.Does this mean it is not being used, or just not being reported as in use?Is there anything I could do to improve the situation if it is not being used as much as it could be?On Windows, I can assign processes to both cores, or either one. Is there a way to do something similar in Linux?
View 10 Replies View RelatedI've a program that launches new processes, and wait for them to die before it exits. So, for example, my program is a process, and it launches 3 more processes, and when the 3 child processes end, it will exit.
As you see, at end of the example, the program used a total number of 4 processes.
1 - Now, I'm running this program in a CPU with 4 cores. This means that the program used each core for each process?
2 - How can I know which core the program used?
I tried the google and browsing the known bugs in the sticky before posting this thread.On boot the machine is pegged at 100%. It is a dual-core with 4GB of ram and is running 10.04, 64bit. Also, as time goes on it eats up all the ram till theres maybe 32mb free. What happens is there are multiple 4-10+ identical processes running. seem to be gnome related.The machine sits idle on my floor and runs samba and apache/mysql/gallery for my test website that no on but myself visits.
View 5 Replies View RelatedI recently inherited a server that I'm now looking after, and when browsing the running processes I came across a number of processes labelled:"/usr/local/apache-2.2.6/bin/.libs/lt-httpd -k start"
At any one time there are between 10 and 15 of them running.Googling the issue has been surprisingly unhelpful... can anybody even tell me what this process is, much less what sort of issue might result in multiple running copies? I'm running Debian Etch (release 4.0).
I have created a simple download schedular with source-code give below :
---------------------record_strokes.sh-------------------
touch /home/student/packs/lynx/logfile
lynx -cmd_log /home/student/packs/lynx/logfile
[code]....
So, this is a simple download scheduler program code. Which creates multiple threads of the downloading process - wget (i could also have used 'curl' instead 'wget').Can you debug this code?
I'm porting C++ application from ARM to MIPS platform. It works now, but I see some strange timing problems. I've seen now that My app process is called multiply time. Here is "top" output:
Mem: 24592K used, 102084K free, 0K shrd, 0K buff, 16864K cached
CPU: 0% usr 99% sys 0% nice 0% idle 0% io 0% irq 0% softirq
Load average: 4.02 2.17 0.95
PID PPID USER STAT VSZ %MEM %CPU COMMAND
1888 1875 admin R 12096 10% 98% ./my_app.exe
code....
I don't see something like this when I compile it for x86, nor ARM.On MIPS I use uClibc instead of glibc.
I scanned hundreds of pages in gray scale and would like to batch process them to B&W. You can do this using the gimp GUI. what it does is get rid of all the gray shading from reflections off the paper when scanned. So you get crisp white backgrounds with black text and diagrams. I would like to simply do this to the entire group directory at one time as it would be quite a lot of effort to open them and do them one by one.
View 3 Replies View Relatedi am running gigabyte GA-M68M-S2P and AMD sempron 2.7. the problem is when i try to run dual core. it will boot and run for 2mins then it crashes. single core runs perfect.
View 6 Replies View RelatedI just loaded F14 on an old Dell Dimension 3000 with a dual core processor but only one is showing. Here's the output from top:
processor: 0
vendor_id: GenuineIntel
cpu family: 15
model: 4
[Code]....
I have a command line OCR program called OCR Shop XTR (Vividata corp) that I am using on a system with a 6-core AMD chip. I changed the bios so that the 6-cores were activated, but htop shows me that while the program is running, I am only getting activity on one core (the program maxes out the one core with consistent usage between 97% and 100%).
I have read that many programs are not written to take advantage of multiple core cpu's. However, I am just hoping that there is some way to get this program to take advantage of the extra cores. Does anyone know of a way to invoke programs from the command line which would spread the workload out among additional cores?
Here is the output of uname -a:Linux linux 2.6.37.1-1.2-desktop #1 SMP PREEMPT 2011-02-21 10:34:10 +0100 i686 athlon i386 GNU/LinuxAnd here is the output for one of the cores from cat /proc/cpuinfo:processor : 5
vendor_id : AuthenticAMD
cpu family : 16
model : 10
model name : AMD Phenom(tm) II X6 1100T Processor
stepping : 0
[Code].....
Just a quick question. Does Kubuntu Karmic support core 2 E8500 out of the box or do you need the SMP kernel?
View 3 Replies View RelatedIs there any Linux API that will let me control on what core will a thread run? If not, do I have to use assembly language?
View 2 Replies View Relatedone tell me the internal working of kill command. that is how it kills a process internally or from where it picks file to continue its process.
View 3 Replies View RelatedI have a high priority service that I start with sudo nice -n -10 process. This process does not need superuser rights though, except for the priority elevation. But nice requires superuser privileges to elevate priority.
View 3 Replies View Relatedsend the details raid configuration how to use in linux el5 and how to indentify the raid degrade process and how to rebuilt the process.
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