10 More Discussions You Might Find Interesting
1. Emergency UNIX and Linux Support
Can someone please help me with a script that will help in identifying the CPU & memory usage by a process name, rather than a process id.This is to primarily analyze the consumption of resources, for performance tweaking.
G (4 Replies)
Discussion started by: ggayathri
4 Replies
2. Red Hat
Hi All,
I have a RHEL 5.4 server which runs an Apache web server(2.2.23 compiled with prefork MPM).I want to find out the memory utilised by the web server.
# ps -ylC httpd | wc -l
245
# ps -ylC httpd | more
S UID PID PPID C PRI NI RSS SZ WCHAN TTY TIME CMD
S ... (0 Replies)
Discussion started by: Hari_Ganesh
0 Replies
3. HP-UX
Hi ,
We need to get the CPU% and Memory utilization of process by process id.
Is there any way to do get them ?
I tried few commands like top -p <PID> ,
but am getting error "Quitting top: pset <PID> doesn't exist"
also i tried with ps -eo option but am getting error "ps: illegal option --... (5 Replies)
Discussion started by: suresh_g
5 Replies
4. UNIX for Dummies Questions & Answers
Hi ,
We need to get the CPU% and Memory utilization of process by process id.
Is there any way to do get them ?
I tried few commands like top -p <PID> ,
but am getting error "Quitting top: pset <PID> doesn't exist"
also i tried with ps -eo option but am getting error "ps: illegal option --... (1 Reply)
Discussion started by: suresh_g
1 Replies
5. AIX
Hi,
We need to monitor one process over time to see at which exact point it starts to consume to much memory and CPU (to correlate this with some other events).
I am a newbie in AIX, so please could you tell me which command will give a snapshot of the current state of a process so that I... (1 Reply)
Discussion started by: yallow
1 Replies
6. AIX
I don't know when the process will start and end, I need write a script to trace it's cpu/memory usage when it is runing. How to write this script? (2 Replies)
Discussion started by: rainbow_bean
2 Replies
7. UNIX for Dummies Questions & Answers
I am trying to get cpu util and memory occupied for a process. I use these (I am showing output also):
using top
----------
$ top p 25272 d 5
top - 01:52:17 up 2 days, 21:28, 2 users, load average: 0.02, 0.05, 0.06
Tasks: 1 total, 0 running, 1 sleeping, 0 stopped, 0 zombie... (5 Replies)
Discussion started by: radiatejava
5 Replies
8. Shell Programming and Scripting
Hi,
I need to check which process in linux is taking high memory and which process is taking high cpu usage.
Regards,
Bash (4 Replies)
Discussion started by: learnbash
4 Replies
9. UNIX for Dummies Questions & Answers
Hi,
I want to check the CPU and Memory Utilisation in the whole machine (not for a single process). Can someone send me a ready made script which captures all information in a log every 5min??
Thanks,
Ajith (0 Replies)
Discussion started by: Ajith Praveen
0 Replies
10. UNIX for Dummies Questions & Answers
Dear Champs,
Can anybody help me out to write a shell script , which will check whether the process is running , if running then divide the process into 2 so that next var it can take process parallel .
Let
ps -ef | grep a.sh => shows running
note a.sh will take a process of next... (0 Replies)
Discussion started by: manas_ranjan
0 Replies
vlimit(3) Library Functions Manual vlimit(3)
Name
vlimit - control maximum system resource consumption
Syntax
#include <sys/vlimit.h>
vlimit(resource, value)
Description
This facility has been superseded by
Limits the consumption by the current process and each process it creates to not individually exceed value on the specified resource. If
value is specified as -1, then the current limit is returned and the limit is unchanged. The resources which are currently controllable
are:
LIM_NORAISE Pseudo-limit; if set nonzero then the limits may not be raised. Only the super-user may remove the noraise restriction.
LIM_CPU The maximum number of cpu-seconds to be used by each process.
LIM_FSIZE The largest single file which can be created.
LIM_DATA The maximum growth of the data+stack region via beyond the end of the program text.
LIM_STACK The maximum size of the automatically-extended stack region.
LIM_CORE the size of the largest core dump that will be created.
LIM_MAXRSS a soft limit for the amount of physical memory (in bytes) to be given to the program. If memory is tight, the system will
prefer to take memory from processes which are exceeding their declared LIM_MAXRSS.
Because this information is stored in the per-process information this system call must be executed directly by the shell if it is to
affect all future processes created by the shell; limit is thus a built-in command to
The system refuses to extend the data or stack space when the limits would be exceeded in the normal way. A break call fails if the data
space limit is reached, or the process is killed when the stack limit is reached. Since the stack cannot be extended, there is no way to
send a signal.
A file I/O operation which would create a file which is too large will cause a signal SIGXFSZ to be generated, this normally terminates the
process, but may be caught. When the cpu time limit is exceeded, a signal SIGXCPU is sent to the offending process; to allow it time to
process the signal it is given 5 seconds grace by raising the cpu time limit.
Restrictions
If LIM_NORAISE is set, then no grace should be given when the CPU time limit is exceeded.
See Also
csh(1)
vlimit(3)
