General :: Kernel With Non-preemptive Process Scheduling?
May 1, 2010how to modify kernel source to make its process scheduling to non-preemptive and FCFS ?
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General :: Modify Kernel With Non-Preemptive Scheduling
May 1, 2010How to modify kernel to non-preemptive process scheduling only. Suggest any site that provides this kind of source code.
View 1 Replies View RelatedGeneral :: Kernel Scheduling Algorithm
Sep 8, 2010is linux kernel is priority preemptive kernel?if it is. where it is using round robin scheduling algorithm?when processes are scheduled for the processor process will be allocated as which sechudling alogorithm?
View 1 Replies View RelatedGeneral :: Finding The Process ID Of Kernel?
Apr 15, 2010How can we find out the Process ID of Kernel? Is kernel in itself not a process which is running and handling the overall system calls and program executions?
View 4 Replies View RelatedGeneral :: Slow Down The Kernel Boot Process?
Oct 14, 2010I'm trying to upgrad from kernel 2.6.32.9 to 2.6.34.3 and I'm having problems.The boot finished with that old gem "Kernel panic - not syncing: Attempting to kill init !"I suspect that it's something to do with my PATA IDE driver because there have been kernel changes in this area.My problem is all the boot messages scroll off the top of the screen before I can read them and it's no use saying look at dmesg or /var/log/messages because the root fs isn't there - another reason why I think it's to do with the drivers.So my question is, is there some way I can slow down the boot process so that I have a chance of reading the messages ?
View 4 Replies View RelatedGeneral :: What Is The Module That Is Used To Process Font In Kernel
Oct 28, 2010what is the module that is used to process font in Linux kernel?
View 4 Replies View RelatedGeneral :: Pipe Kernel Messages To Another Process As They Occur
Apr 13, 2011I have an OLED screen on my laptop that I have configured to show status information. The current driver I have installed in Linux for it is able to display messages by sending them to a script as an argument separated by spaces.Example: the command /opt/asusg50oled/utils/notify.sh Hi Everybody "Hello World" displays on the oled screen:
Hi
Everybody
Hello World
If another message is sent before the old ones disappear and it reverts to status info, it pushes off the top message. Example: less than 30 seconds after the previous example, /opt/asusg50oled/utils/notify.sh "Bananas have potassium" is executed:
Everybody
Hello World
Bananas have potassium
What I want to do is have kernel messages (the kind you see by running dmesg) forwarded to this script. For example, when I insert a USB drive, the following information would show on the OLED screen as they're logged:........
General :: Find A Relative Statement Of Each Kernel Process?
Apr 23, 2011as the title,I want learn how it works.
View 1 Replies View RelatedGeneral :: Kernel Panic On Boot - Authentication Process Failed
Feb 22, 2011I got home today to find that my KDE login screen would not let me log in. It said the authentication process failed or something and I needed to terminate the screen lock process manually. So I go over to another virtual terminal and try to log in. As soon as I enter my user name, a bunch of errors come up and I am unable to log in. "This can't be good" I think to myself, and reboot.
I am greeted by this error upon booting:
The error says that it says it cannot find /sbin/init. I loaded up a Ubuntu live CD and verified that /sbin/init is indeed present and all my other files still seem to be there. I tried booting into arch fallback on grub but that didn't work either. Midway through the day I SSHed my desktop from my phone and started it doing an upgrade. I was able to login.
Ubuntu Installation :: Preemptive Preservation Of Grub During Xp Install
Mar 24, 2010I have, in the past, installed windows along side my main OS, Ubuntu. Every time I install windows, the grub ends up disappearing and I have always had to re-install Ubuntu to get the grub back. I have a lot of files and it would take a while to back up so would anyone be so kind as to tell me if there is a way to preemptively preserve grub so it doesn't disappear after I install XP on half of my hard drive?
View 4 Replies View RelatedSlackware :: Kernel Hang During Boot Process - Slack 13.1 Stable W/ Kernel 2.6.33.4-smp
Jun 20, 2010I installed a fresh copy of Slackware 13.1 (stable) on one of my media servers and I am experiencing something strange.... When I power up the machine, I see the kernel booting, no errors, until it gets to the point where it says:
And then randomly freeze there.... Well the machine is not totally frozen because the cursor still blinks. But it will never continue... Like I said, this happens on a random basis... After a reset, it might go through or simply stall at the same spot.
I remember after installing Slack 13.1, I rebooted the machine but forgot to remove the DVD from the player, so the install routine started up, and froze at the same point when it was loading the kernel for the setup programs...
My mobo is a MSI k9N platinum.
I never had this problem before.... (well I never used 13.1 before). Since I got this machine, I used slack 12.2 and slack 13-current with success.
This problem makes the machine extremely unreliable because I intent to use it as a backup and media server, so chances I will WOL the machine and use it remotely... if that happens.
General :: Find Out How Much Time An Already Running Process Is Spending In User And Kernel Spac?
Jun 8, 2011I am currently struggling with one of my tasks.I was asked to find a way how to determine how much time an _already running_ process is spending in user and kernel space.E.G. <some tool> <pid>[Control] + [c]<pid> spent 12.1 seconds in user and 1.52 seconds in kernel space.Does something like this exist? Basically I guess I am looking for something similar to time, except that the process is already running.So..a) Is there a tool which fulfills this task?b) Is there a way to write your own software which does the job? Is it even possible to code something I am looking for?I recently found strace -c -p <pid>, but well, this is not exactly what I was looking for.
View 3 Replies View RelatedGeneral :: Cron Job Not Scheduling?
Jan 9, 2011I have a cron job to schedule the task on the third sunday of the month.I saw the previous threads but didn't find any solution.
How the cron syntax can be written.
General :: Earliest Deadline First Scheduling?
May 28, 2009kindly give me example of earliest deadline first scheduling?
View 5 Replies View RelatedGeneral :: Do Scheduling Using /etc/crontab File?
Feb 11, 2011i want to do scheduling using /etc/crontab file instead of using crontab -e that is crontab command on the terminal.i am appending to the crontab file in the /etc directory but the scheduling is not happening
View 7 Replies View RelatedGeneral :: Scheduling Script Using /etc/cron.d?
Mar 10, 2011iam try to schedule my job in a file made in /etc/cron.d file as follows* * * * * tomcat6 /home/etika/Desktop/eka.sh /home/etika/Desktop/ea/etika.txt abc@gmail.comwhere eka.sh belongs to etika which is the root and etika.txt belong to tomcat6 this command is not running iam confused about the name of the owner written after the *'s please tell me whose name is written after the *'s(the schedule of the script) the owner of the script or the owner of the file which iam passing as an argument to the shell script
View 2 Replies View RelatedGeneral :: CGROUPs And Fair Group Scheduling?
Apr 23, 2010I have played around a little bit with CGROUPS and the fair group scheduler ( using kernel version 2.6.31). When you have CGROUPS in a flat structure, with only one layer from the root-cgroup, everything works as you might expect when setting the cpu.shares parameter, i.e. a fraction of the total. But when I experimented with having deeper levels of CGROUPs it did'nt make any sense sometimes. For example, I had one CGROUP with the maximum number of shares (260000 something) , and two childgroups with quite little shares, 5000. Then I created some cpuhogging processes ( while(1); ) and put most of them in childgroups and one in the parentgroup. The logical thing would be if the parentgroups single process took almost all CPU-time, as it had the maximum number of shares, but instead the processes in the childgroups got the most CPU-time.
I have tried to figure out how it works by looking at the source code, but I can't really understand it. How does the hierarchical structure of the cgroup-tree interact with the flat aspect of it, i.e. siblings? Or do I misunderstand the whole concept?
General :: Write A Scheduling Script In Java?
Mar 2, 2011am newbie and i have problem to write a scheduling script in java, this script should do something in certain time interval... Could anybody help me, maybe give some example or source that maybe useful
View 3 Replies View RelatedGeneral :: Scheduling Shutdown After Download Completion?
May 20, 2010Is there any way to schedule shutdown, from terminal,right after some currently running download in mozilla completes??
View 6 Replies View RelatedGeneral :: Scheduling Product That Is Available To Handle The Production Code?
Oct 12, 2010I am proposing moving from the mainframe to Linux. Problem is that I am not aware of a scheduling product that is available to handle the production code. Currently using CA7. Is there anything out there that accomplishes the same thing? As you can tell, I am NEW to Linux!
View 1 Replies View RelatedGeneral :: Kills A Process Internally Or From Where It Picks File To Continue Its Process?
Jan 8, 2010one 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 RelatedGeneral :: Elevate The Priority Of A Process Without Process Superuser Rights?
Jan 21, 2011I 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 RelatedGeneral :: How To Identify Raid Degrade Process / How To Rebuilt Process
Jun 12, 2010send the details raid configuration how to use in linux el5 and how to indentify the raid degrade process and how to rebuilt the process.
View 4 Replies View RelatedGeneral :: Sending Signal From Child Process To Parent Process?
Sep 8, 2010Code:
#include <stdio.h>
#include <unistd.h>
#include <signal.h>
[code]....
Description of what the code does or what i intended to do:
1. Created a child process from parent process using 'fork()'
2. Sent a signal 'SIGALRM' from child process to parent process using 'sigqueue' function.
(The Third parameter of 'siqueue' function contains the message (message msg) which the child process wants to send to the parent process.'msg' is a stucture instance containing a) pid of child and b) string) 5. Print the 'msg' sent by child process inside the signal handler function 'sig_action_function' of the parent process I am getting some junk value when this line is executed
Code:
printf("%d
",msg->cpid);
I expected to get the pid of child process, which the child process sent to parent process through the signal.
General :: Process Scheduler A Part Of Process Queue?
Aug 12, 2010as we all know Process Scheduler does Process scheduling and its a process as well. I was just wondering that if this happens then the Process "Process Scheduler" should be a part of Process queue as well.
So if there are 5 process are there in Process queue & process scheduler is administrating them then since its also a process, once it puts a process under RUN state it should itself go inside queue because at one instant only one process can get executed on a processor. This is quite confusing for me. Please help me out. I tried to search on this but could not find any relevant topics.
General :: Find The Parent Process Of A Zombie Process?
May 4, 2010How do you find the parent process of zombie processes?
When the child process is something where the parent is not entirely obvious...
Is there some way to list processes in tree format or something?
General :: Process Shows Multiple Process Ids(pids)?
Nov 9, 2010I 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 RelatedFedora :: Boot Process Fails Using Kernel 2.6.30.9-96
Nov 9, 2009The boot process fails using; 2.6.30.9-96.fc11.x86_64. I am able to successfully boot by selecting 2.6.30.5-43.fc11.x86_64 from GRUB. The last few messages I receive when booting using 2.6.30.9-96.fc11.x86_64;
ADDRCONF (NETDEV_UP): eth0: link is not ready
Sky2 eth0 link is up at 100 mps, full duplex flow control rx
ADDRCONF (NETDEV_CHANGE):eth0: link becomes ready
audit (1257757711.701:20095): auid=4294967295 ses=4294967295 subj=system_u:system_r:readahead_t:s0 op=remove role key=null list=2 res=0
audit (1257757711.701:20096): audit_enabled=0 old=1 auid=4294967295 ses=4294967295 subj=system_u:system_r:readahead_t:s0 res=1
Programming :: Allocate A Cpu Core For Kernel Process?
Aug 3, 2010My 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.
Programming :: Get Process Statistics From Kernel And Return Them Buf?
Apr 7, 2011I am want get next information: Get process statistics from kernel and return them buf as
Quote:
number of processes : ticks_user : ticks_system : ticks_interrupt : cpuseconds : procsizes : resident segment sizes I am find some this information in /proc/[pid]/stat, but there are is not data about ticks system, ticks_interrupt, cpusecond. Where I am can find it information???
I am write on C, better if it will file witch information, and not programm.