11-15-2002
Someone has reset the timeslice from 10 to 1. You should inquire why this has been done first of all, and maybe other settings has been changed as well that you need to be aware of.
If your througput is low - reset the timeslice to the default. If not - then it seems to be ok. You have approx 1000 cs / CPU which is high for an old system, but nothing to be concerned about for a new highperforming system, even with a timeslice of 10.
In general a timeslice of 1 millisecond is to short and the processes get timed out too soon, not that HPUX is a Unix kernel with pre-emptive multitasking and when higher priority processes/threads are available, processes and threads with lower priority will be pre-empted. Also when performing I/O the process/thread will be "put aside" until the I/O is completed and then it will rejoin. This is of course a very simplified description.
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
here is a data file.
-------------------------------------
KSH, CSH, BASH, PERL, PHP, SED, AWK
KSH, CSH, BASH, PERL, PHP,
BASH, PERL, PHP, SED, AWK
CSH, BASH, PERL, PHP, SED,
KSH, CSH, BASH, PERL, PHP, SED, AWK
-------------------------------------
My desired output is... (2 Replies)
Discussion started by: VTAWKVT
2 Replies
2. Shell Programming and Scripting
Hi,
There's a file with below contents which I have to read based on the input parameter provided by the user.
FILE_ID=1
FILE_FTP_ID=ftp.server1.com
FILE_FTP_USER=user1
FILE_FTP_PASS=pass1
FILE_ID=2
FILE_FTP_ID=ftp.server2.com
FILE_FTP_USER=user2
FILE_FTP_PASS=pass2
FILE_ID=3... (6 Replies)
Discussion started by: dips_ag
6 Replies
3. UNIX for Dummies Questions & Answers
Hi all,
I've got this question that i need to solve:
"Type `vmstat -s; vmstat -n 1 5; vmstat -n 1 5; vmstat
-s` to your Ruby interpreter. Then terminate your Ruby session. Run the Unix com-
mand vmstat -s; vmstat -n 1 5; vmstat -s in the same terminal window you had
been using for Ruby. Did... (1 Reply)
Discussion started by: snowboarder
1 Replies
4. Homework & Coursework Questions
Hi all,
I've got this question that i need to solve:
"Type `vmstat -s; vmstat -n 1 5; vmstat -n 1 5; vmstat
-s` to your Ruby interpreter. Then terminate your Ruby session. Run the Unix com-
mand vmstat -s; vmstat -n 1 5; vmstat -s in the same terminal window you had
been using for Ruby. Did... (1 Reply)
Discussion started by: snowboarder
1 Replies
5. Homework & Coursework Questions
1. The problem statement, all variables and given/known data:
Type `vmstat -s; vmstat -n 1 5; vmstat -n 1 5; vmstat
-s` to your Ruby interpreter. Then terminate your Ruby session. Run the Unix com-
mand vmstat -s; vmstat -n 1 5; vmstat -s in the same terminal window you had
been using for... (2 Replies)
Discussion started by: snowboarder
2 Replies
6. Linux
In a kernel based on 2.6.27:
In the schedule() routine they have a local variable switch_count:
/*
* schedule() is the main scheduler function.
*/
asmlinkage void __sched schedule(void)
{
struct task_struct *prev, *next;
unsigned long *switch_count;
struct rq... (2 Replies)
Discussion started by: chriskot
2 Replies
7. UNIX for Dummies Questions & Answers
Hi Folks,
I have one query is that I can reach to a location of a file named Integration_Config_3.properties through putty
cd /usr/local/pos/jlan/config/byStore/il
ls -ltr
I can open this file in vi editior also
vi Integration_Config_3.properties
But now my query is I want to add the... (3 Replies)
Discussion started by: SankalpS
3 Replies
8. UNIX for Advanced & Expert Users
If suppose a middle level interrupt is being serviced and a high priority interrupts comes in then in that case what all process will take place.
The interrupt context switch will happen. But where will the interrupt context be saved?
Is there something called as part process data area? (4 Replies)
Discussion started by: rupeshkp728
4 Replies
9. Shell Programming and Scripting
Trying to execute commands for different Unix user with that user's environment variable context without fully switching as that user using sudo && su capabilities.
Hoping this would help with security and not having to waste time switching between 10 different app users on same server.
I do... (6 Replies)
Discussion started by: kchinnam
6 Replies
10. Shell Programming and Scripting
I wrote this code, questions follow
#! /bin/bash -f
# Purpose - to show how if syntax is used within an awk
clear;
ls -l;
echo "This will print out the first two columns of the inputted file in this directory";
echo "Enter filename found in this directory";
read input;
... (11 Replies)
Discussion started by: Seth
11 Replies
LEARN ABOUT ULTRIX
renice
renice(8) System Manager's Manual renice(8)
Name
renice - alter priority of running processes
Syntax
/etc/renice priority [ [ -p ] pid ... ] [ [ -g ] pgrp ... ] [ [ -u ] user ... ]
Description
The command alters the scheduling priority of one or more running processes. The who parameters are interpreted as process ID's, process
group ID's, or user names. Using on a process group causes all processes in the process group to have their scheduling priority altered.
Using on a user causes all processes owned by the user to have their scheduling priority altered. By default, the processes to be affected
are specified by their process ID's.
Options
To force who parameters to be interpreted as process group ID's, a may be specified. To force the who parameters to be interpreted as user
names, a may be given. Supplying will reset who interpretation to be (the default) process ID's.
Users other than the superuser may only alter the priority of processes they own, and can only monotonically increase their ``nice value''
within the range 0 to PRIO_MIN (20). (This prevents overriding administrative fiats.) The superuser can alter the priority of any process
and set the priority to any value in the range PRIO_MAX (-20) to PRIO_MIN. Useful priorities are: 19 (the affected processes will run only
when nothing else in the system wants to), 0 (the ``base'' scheduling priority), anything negative (to make things go very fast).
Examples
The following command changes the priority of process ID's 987 and 32, and all processes owned by users daemon and root:
/etc/renice +1 987 -u daemon root -p 32
Restrictions
If you make the priority very negative, then the process cannot be interrupted. To regain control you make the priority greater than zero.
Non-superusers cannot increase scheduling priorities of their own processes, even if they were the ones that decreased the priorities in
the first place.
Files
Maps user names to user IDs
See Also
getpriority(2), setpriority(2)
renice(8)