10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
Dear Friends,
I have a directory when i take du of that directory it takes alot of memory and cpu and I/O, i want to use nice to run my script that have du command slowly so it won't take I/O and cpu, please suggest. (6 Replies)
Discussion started by: learnbash
6 Replies
2. HP-UX
Running 2 VM Guests on an HPUX Integrity Server. One Guest runs great, the other is always at a high NICE value and 0% idle as shown in TOP:
What do you think should be tuned to bring down the NICE and increase IDLE %? Thanks in advance
-hpuxadmin
slow VM GUEST
Load averages: 2.56,... (5 Replies)
Discussion started by: hpuxadmin
5 Replies
3. Shell Programming and Scripting
Hello folks,
I am searching for pattern, after that i want its presenece on top to bottom basis, like
cat abcd.txt |grep "123"|awk {'print $3'} |sort|uniq -c
it show result like
10 1.1.1.1
1 1.1.1.1
15 1.1.1.1
100 1.1.1.1
but i want to see this like
100 1.1.1.1
15 1.1.1.44
10... (3 Replies)
Discussion started by: learnbash
3 Replies
4. UNIX for Advanced & Expert Users
Hello,
Some guy said to me that using the nice command to decrease the priority of a process is a myth, that the operating system corrects the priorities as the processes need cpu. Is this true? (4 Replies)
Discussion started by: psimoes79
4 Replies
5. AIX
Is there a 'top' command equivalent in AIX 4.2 ?
I already checked and I do not see the following ones anywhere:
top
nmon
topas (1 Reply)
Discussion started by: Browser_ice
1 Replies
6. Linux
Hi, new here and need some help. Sometimes my site is extremely slow, if when there aren't too many people on, whereas when there are over 300 online members the site may be very fast. We use CentOS, PHP 5.26. The server has 4GB and Plesk usually shows about 2 or 3 GB free.
I believe I can see... (4 Replies)
Discussion started by: pspace
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7. HP-UX
Hi,
I have two identical 12 CPU HPUX machines, and I run the same processes on each that load the boxes fully.
top on one reports activity under the NICE (19%) and SYS (18%) columns, while top on the other reports 0% NICE and 16% SYS. What would cause NICE to be zero on one machine and not... (5 Replies)
Discussion started by: CBorgia
5 Replies
8. UNIX for Dummies Questions & Answers
hello everybody:
I have some job running on tru64 system and Im the root, due to limited resources I end up with my job ( vdump) for example taking the lowest share, I researched the nice command on the net, but couldnt get enough info, can I use it to already running process or I only use it... (1 Reply)
Discussion started by: aladdin
1 Replies
9. Programming
Hi I want to implement the nice command in the shell that I am building. I came to know that there is a corresponding nice() system call for the same. But since I will be forking different processes to run different commands typed on the command prompt, is there any way I can make a command... (2 Replies)
Discussion started by: tejbuch
2 Replies
10. UNIX for Dummies Questions & Answers
Hi,
I've got some CPU bottleneck on a HP-UX 11 server : i didn't
understand it until i discover i've got an unusual high percentage
of NICE% CPU regarding my DBRMS process (Sybase 12.x).
How do i have to understand it and how to resolve it ?
Thx. (0 Replies)
Discussion started by: eliador2001
0 Replies
renice(1M) renice(1M)
NAME
renice - alter priority of running processes
SYNOPSIS
newoffset] id ...
DESCRIPTION
The command alters the system nice value (used in the system scheduling priority) of one or more running processes specified by id ....
The new system nice value is set to 20 + newoffset, and is limited to the range 0 to 39. However if the environment variable is set, the
new system nice value is set to current nice value + newoffset. Processes with lower system nice values run at higher system priorities
than processes with higher system nice values. The option of the command shows the current priority and nice value for processes. See
also nice(1).
To reduce the system nice value of a process, or to set it to a value less than 20 (with a negative newoffset), a user must have appropri-
ate privileges. Otherwise, users cannot decrease the system nice value of a process and can only increase it within the range 20 to 39, to
prevent overriding any current administrative restrictions.
To alter the system nice value of another user's process, a user must have appropriate privileges. Otherwise, users can only affect pro-
cesses that they own.
Options
recognizes the following options. If no or option is specified, the default is
Interpret each id as a process group ID. All processes in each process group have their system nice value altered. Only users with
appropriate privileges can use this option.
Change the system nice value of each affected process to 20 +
newoffset. If the environment variable is set, the system nice value of each affected process is changed to current
nice value + newoffset.
If newoffset is negative, the system nice value is set to 20 minus the absolute value of newoffset. If the environ-
ment variable is set and the newoffset is negative, the system nice value is set to current nice value minus the
absolute value of newoffset. Only users with appropriate privileges can reduce the system nice value or set it to
less than 20. If this option is omitted, newoffset defaults to 10.
Interpret each id as a process ID. This is the default.
Note: id is a process ID as reported by the command, not a job number (e.g., as used by some shells.
Interpret each id as a user name or user ID number. All processes owned by each specified user have their system nice values
altered. Only users with appropriate privileges can use this option for user names and IDs other than their own.
RETURN VALUES
returns a 0 when successful, and a non-zero value when unsuccessful.
EXTERNAL INFLUENCES
Single-byte character code sets are supported.
DIAGNOSTICS
reports the old and new newoffset values (system nice value - 20) of the affected processes if the operation requested completes success-
fully. Otherwise, an error message is displayed to indicate the reason for failure.
However, if the environment variable is set, no reporting is done unless the command fails.
EXAMPLES
Use default values to decrease the priority of process The id type defaults to and newoffset defaults to setting the process to a system
nice value of 30.
Change the system nice value for all processes owned by user and user to 33 (newoffset=13). (Affecting other users processes requires
appropriate privileges.)
Change the system nice value of all processes in process group 20 to (Lowering the system nice value of a process group requires appropri-
ate privileges.)
WARNINGS
Users who do not have appropriate privileges cannot reduce the system nice values of their own processes, even if they increased them in
the first place.
FILES
Maps user names to user
ID's
SEE ALSO
nice(1), ps(1), getpriority(2), nice(2).
STANDARDS CONFORMANCE
renice(1M)