Help: my process priority is decreased to zero by OS?

Hi, I see this is a group about Linux, but it seems its the most appropriate forum to post my problem.
My world is composed of Unixware7 and Oracle 8.1.5 and some processes of my owner application.
Everything is OK after my application started, but several hours later, the prioriy of process 'ora_pmon_sid' is decreased to 0(I found out using ps -ef|grep ora_), while all other processes seems alright and my application runs on.
To my best knowledge, OS will decrease a process's priority if only it occupied too many resources. I have no idea what it is doing now, anyone help me?
No warnings, no errors, the %idle of CPU remains 50%.

Hi
On linux, priority goes from -20 (highest priority) to 20 (lower priority) so a priority of 0 is not bad ;)
Most UNIX do this, so first check the priority system under your UNIX, and get the highest/lower value...
Anyway if CPU is 50% the machine is working fine, is not hanged.....
A10!
PS: How many simultaneous connections to the database and machine did you have?

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Help: my process priority of 'ora_pmon_sid' is decreased to 0 by OS!

Hi, I see this is a group about Linux, but it seems its the most appropriate forum to post my problem.
My world is composed of Unixware7 and Oracle 8.1.5 and some processes of my owner application.
Everything is OK after my application started, but several hours later, the prioriy of process 'ora_pmon_sid' is decreased to 0(I found out using ps -ef|grep ora_), while all other processes seems alright and my application runs on.
To my best knowledge, OS will decrease a process's priority if only it occupied too many resources. I have no idea what it is doing now, anyone help me?
No warnings, no errors, the %idle of CPU remains 50%.

You should look at the Windows Event Log for errors / reasons.
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I make the acquisition with a device connected to GPIB.
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Go to Solution.
Attachments:
priority_process_LV2012.vi ‏16 KB
Capture.JPG ‏114 KB

Rigth click on the border of the loop you want to leave and add the conditional terminal.
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Greetings from Germany
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LV since v3.1
“ground” is a convenient fantasy
'˙˙˙˙uıɐƃɐ lɐıp puɐ °06 ǝuoɥd ɹnoʎ uɹnʇ ǝsɐǝld 'ʎɹɐuıƃɐɯı sı pǝlɐıp ǝʌɐɥ noʎ ɹǝqɯnu ǝɥʇ'

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I'm on Windows XP and using Firefox 16.0.2.
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Michael Girdley
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Learning WebLogic? http://learnweblogic.com
"Chris Chen" <[email protected]> wrote in message
news:3a71152e$[email protected]..
Hi,
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This question is also active in the Tiger forum... http://discussions.apple.com/thread.jspa?threadID=1491812
I am posting here in case it is somehow different for Leopard.
How can I change the priority of a program (say Handbrake) to be lower?
I have tried "sudo renice 20 <handbrake PID>" but Activity Monitor doesn't seem to show any
change in behaviour and the Nice CPU display is still zero percent.
How can an app's priority be lowered and how can one verify that it worked?

I saw this post in another thread
poster: P Gierke
thread: http://discussions.apple.com/thread.jspa?messageID=6662466
nice and renice still alter a processes scheduling priority. You can see for yourself using the pridist.d dtrace script ( type sudo pridist.d ). This script samples at 1 kHz and spits out a scheduling priority distribution graph broken down by process.
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P Gierke iMac 20'' Mid-2007 Mac OS X (10.5)

How to discover/list 'NICE' process priority ???

I know how to change it.
How do you LIST them ?
TY

Ermanno Polli wrote:
orangekay wrote:
That's because you left out the "your favorite options" part. Try something like
LOL :-D
I thought he was more unix savy, judging by his request.
If he knows how to change the "niceness" of a process, he has to know how to list them.
Since nice is not in the standard listing, it could be normal to not remember the right option.
But he should have known how to use man, on the other hand..
Oh, well...
ps aux -O nice
Ciao,
Ermanno
Hey Ermanno, new friend...
*I DO Know how to use 'man'*.. - even said :"nor did *apropos display priority* & Variations... tho I Found 'Getpriority' which doesn't seem to be present:(
" {Anyone know why it isn't, BTW ??} - Generally, I find apropos about as useful as +<milk production spigots,4 letters>+ on a Bull...
{On the subject: does anyone now of a decent online help fast DB Tool for OS X /Darwin/BSD? -the type of programmers tool I used to use with CodeWorrier (sic) for system calls, syntax & similar when I was still programming...)
BUT, when someone responds with
ps -O nice
In answer to a question like mine.. You copy,paste and GO, don't you?
I Got results that looked right/reasonable. The Command looked right, HAD 'nice' in it, so I naturally assumed (wrongly,of course) that 'nice' was expected in the results (silly me ) and so posted back rather than going for man (gotta admit, man is often scarcely comprehensible -I think the system needs a SUPERman - more like 'Help - and more helpful than 'Help... man is more a 'memory jogger' than anything else IMNSHO
You're just trying to get outa admitting that it woulda been just as easy to have given me:
ps aux -O nice
:P
But thank you very kindly for the assistance.
+(Just FYI: wikip says "...A niceness of −20 is the highest priority and *19 is the lowest* priority. ...".+ Further: +"...Thus a process run with nice +15 will receive 1/4 of the CPU time allocated to a normal-priority process: (20-15)/(20-0)=1/4. *On the BSD 4.x scheduler, on the other hand, the ratio in the same example is about ten to one.....*"+ Wonder what it is on Mac/Darwin ...
I Gotta award the 'Solved' to someone...
I thank everyone - and wish this system would allow me to award more 'Helpful' points... seems unfair.
so: THANK YOU:-
orangekay
Courcoul
glsmith
- and even * 'I love my macbo...'* - for trying to help.
and,of course,
Ermanno
To whom,
Ciao...
Problem solved.

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Help: my process priority is decreased to zero by OS?

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