06-21-2006
Helo.
The swapper process is part of the kernel. It should have PID 0 and is in charge of scheduling processes. So It's normal.
Regards.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Hello all,
I would be happy if any one could help me with a shell script that would determine all the processes running on a Unix server and post a mail if any of the process is not running or aborted.
Thanks in advance
Regards,
pradeep kulkarni.
:mad: (13 Replies)
Discussion started by: pradeepmacha
13 Replies
2. Shell Programming and Scripting
Hi Experts, we do have a shell script for Unix Solaris, which will kill all the process manullay, it used to work in my previous env, but now it is throwing this error.. could some one please help me to resolve it
This is how we execute the script (and this is the requirement) ... (2 Replies)
Discussion started by: jonnyvic
2 Replies
3. Shell Programming and Scripting
Hey all, I need to launch a script from within 2 other scripts that can run independently of the two parent scripts... Im having a hard time doing this, if anyone knows how please let me know.
More detail.
ScriptA (bash), ScriptB (ksh), ScriptC (bash)
ScriptA, launches ScriptB
ScirptB,... (7 Replies)
Discussion started by: trey85stang
7 Replies
4. Shell Programming and Scripting
get email notification from from system when a process from XXXX user takes longer than 15 min run.Let me know the time estimation for the same.
hi ,any one please tell me , how to write a script to get email notification from system when a process from as mentioned above a xxxx user takes... (1 Reply)
Discussion started by: kirankrishna3
1 Replies
5. AIX
Hi
I would like to know more about swapper process..
I knew that swapper is the first process with PID#0, used to perform process swap operations. It used to swap entire processes
But sometimes I find swapper process with PID#264
So my doubt is how many swapper process can exist in a system?... (2 Replies)
Discussion started by: Priya Amaresh
2 Replies
6. BSD
Hi Experts,
I am facing one problem here which is one process always stuck in running state which causes the other similar process to sleep state . This causes my system in hanged state.
On doing cat /proc/<pid>wchan showing the "__init_begin" in the output.
Can you please help me here... (0 Replies)
Discussion started by: naveeng
0 Replies
7. UNIX for Advanced & Expert Users
Hi Experts,
I am facing one problem here which is one process always stuck in running state which causes the other similar process to sleep state . This causes my system in hanged state.
On doing cat /proc/<pid>wchan showing the "__init_begin" in the output.
Can you please help me here... (1 Reply)
Discussion started by: naveeng
1 Replies
8. UNIX for Advanced & Expert Users
Hi Experts,
I am facing one problem here which is one process always stuck in running state which causes the other similar process to sleep state . This causes my system in hanged state.
On doing cat /proc/<pid>wchan showing the "__init_begin" in the output.
Can you please help me here... (6 Replies)
Discussion started by: naveeng
6 Replies
9. Shell Programming and Scripting
I am writing a script to kick off a process to gather logs on multiple nodes in parallel using "&". These processes create individual log files. Which I would like to filter and convert in CSV format after they are complete. I am facing following issues:
1. Monitor all Processes parallelly.... (5 Replies)
Discussion started by: shunya
5 Replies
10. Shell Programming and Scripting
Team,
I have multiple batchjobs running in VM, if I do ps -ef |grep java or tomcat I am getting multiple process list.
How do I get my exact tomcat process running and that is unique? via shell script? (4 Replies)
Discussion started by: Ghanshyam Ratho
4 Replies
LEARN ABOUT FREEBSD
idprio
RTPRIO(1) BSD General Commands Manual RTPRIO(1)
NAME
rtprio, idprio -- execute, examine or modify a utility's or process's realtime or idletime scheduling priority
SYNOPSIS
[id|rt]prio
[id|rt]prio [-]pid
[id|rt]prio priority command [args]
[id|rt]prio priority -pid
[id|rt]prio -t command [args]
[id|rt]prio -t -pid
DESCRIPTION
The rtprio utility is used for controlling realtime process scheduling.
The idprio utility is used for controlling idletime process scheduling, and can be called with the same options as rtprio.
A process with a realtime priority is not subject to priority degradation, and will only be preempted by another process of equal or higher
realtime priority.
A process with an idle priority will run only when no other process is runnable and then only if its idle priority is equal or greater than
all other runnable idle priority processes.
Both rtprio or idprio when called without arguments will return the realtime priority of the current process.
If rtprio is called with 1 argument, it will return the realtime priority of the process with the specified pid.
If priority is specified, the process or program is run at that realtime priority. If -t is specified, the process or program is run as a
normal (non-realtime) process.
If -pid is specified, the process with the process identifier pid will be modified, else if command is specified, that program is run with
its arguments.
Priority is an integer between 0 and RTP_PRIO_MAX (usually 31). 0 is the highest priority
Pid of 0 means "the current process".
Only root is allowed to set realtime or idle priority for a process. A user may modify the idle priority of their own processes if the
sysctl(8) variable security.bsd.unprivileged_idprio is set to non-zero. Note that this increases the chance that a deadlock can occur if a
process locks a required resource and then does not get to run.
EXIT STATUS
If rtprio execute a command, the exit value is that of the command executed. In all other cases, rtprio exits 0 on success, and 1 for all
other errors.
EXAMPLES
To see which realtime priority the current process is at:
rtprio
To see which realtime priority of process 1423:
rtprio 1423
To run cron(8) at the lowest realtime priority:
rtprio 31 cron
To change the realtime priority of process 1423 to 16:
rtprio 16 -1423
To run tcpdump(1) without realtime priority:
rtprio -t tcpdump
To change the realtime priority of process 1423 to RTP_PRIO_NORMAL (non-realtime/normal priority):
rtprio -t -1423
To make depend while not disturbing other machine usage:
idprio 31 make depend
SEE ALSO
nice(1), ps(1), rtprio(2), setpriority(2), nice(3), renice(8)
HISTORY
The rtprio utility appeared in FreeBSD 2.0, but is similar to the HP-UX version.
AUTHORS
Henrik Vestergaard Draboel <hvd@terry.ping.dk> is the original author. This implementation in FreeBSD was substantially rewritten by David
Greenman.
CAVEATS
You can lock yourself out of the system by placing a cpu-heavy process in a realtime priority.
BUGS
There is no way to set/view the realtime priority of process 0 (swapper) (see ps(1)).
There is in FreeBSD no way to ensure that a process page is present in memory therefore the process may be stopped for pagein (see
mprotect(2), madvise(2)).
Under FreeBSD system calls are currently never preempted, therefore non-realtime processes can starve realtime processes, or idletime pro-
cesses can starve normal priority processes.
BSD
September 29, 2012 BSD