C++ application: how to access AIX process and cpu information?

10 More Discussions You Might Find Interesting

1. UNIX for Beginners Questions & Answers

Cpu information

hi unix expert is there any program in terminal to show cpu and ram information? and usage of this? Many thanks samad

2. Shell Programming and Scripting

Tricky situation with process cpu usage - AIX

OS: AIX so we frequently receive a lot of cpu related alerts. all types of checks have been created to keep an eye on the cpu but a lot of these checks make too much noise as the CPU is always being seen as high. the system and application owners say there's no issue with the cpu. so now,...

3. AIX

AIX core,cpu and application list

Hi All , I am trying to pull out below things from AIX machine (any type) 1. number of physical processor 2. number of logical processsors 3. Total number of processors (physical plus logical) 4. total number of cores 5. list of installed applications with versions and vendor name ...

4. Shell Programming and Scripting

Cpu utilization by a process has to be mailed if more than 5% on AIX

i am using the below command in order to find the cpu utilization by a user..now i want to mail if the cpu utilization goes beyond 5%....can someone please help me ? ps auxw | sort -r +2 | awk '{ print $3,$1 }' | head -6 | egrep "USER|#anonymous#" %CPU USER 2.0 anonymous Regards,...

5. AIX

Aix process CPU differences.

Hi, I'm trying to create a script to catch a process which is consuming high CPU which I have pretty much done but it's just finding the correct place to pull the current CPU for that process. When viewed in Topas it's consuming 99.*% cpu But if I try using ps avg or ps -eo pcpu ...

6. AIX

How to access process and cpu info on AIX?

7. AIX

Find CPU per process in AIX

Hi. I am looking for a command that will return me the amount of CPU used by a specific process in AIX environment. I know there is TOPAS - but it is interactive and I need to get this information from system that connects remotely via SSH. Using writing to files and than reading them is also...

8. UNIX for Dummies Questions & Answers

how to get persistant cpu utilization values per process per cpu in linux (! top,ps)

hi, i want to know cpu utilizatiion per process per cpu..for single processor also if multicore in linux ..to use these values in shell script to kill processes exceeding cpu utilization.ps (pcpu) command does not give exact values..top does not give persistant values..psstat,vmstat..does njot...

9. AIX

Cmd to find CPU utiliz of a process in AIX

Hello All, I wanna find the CPU utilization of a specific process running on AIX OS. I have its pid, but not sure about the command. iostat sar 5 5 vmstat All the above give me system CPU utilization. Is there a way to find for a specific pid??? Thanks, Ankita

10. Programming

Obtaining Process information on AIX

I have written a program to collect some performance metrics on and AIX box, but I'm having difficultly getting the process information. I'm lead to believe that I'm not getting the correct information because I'm trying to run the program on AIX 5.1 (5100-03), but I'm not convinced as the...

LEARN ABOUT PLAN9

posix_madvise

POSIX_MADVISE(3)					     Linux Programmer's Manual						  POSIX_MADVISE(3)

NAME

       posix_madvise - give advice about patterns of memory usage

SYNOPSIS

       #include <sys/mman.h>

       int posix_madvise(void *addr, size_t len, int advice);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       posix_madvise():
	   _POSIX_C_SOURCE >= 200112L

DESCRIPTION

       The posix_madvise() function allows an application to advise the system about its expected patterns of usage of memory in the address range
       starting at addr and continuing for len bytes.  The system is free to use this advice  in  order  to  improve  the  performance	of  memory
       accesses (or to ignore the advice altogether), but calling posix_madvise() shall not affect the semantics of access to memory in the speci-
       fied range.

       The advice argument is one of the following:

       POSIX_MADV_NORMAL
	      The application has no special advice regarding its memory usage patterns for the specified address  range.   This  is  the  default
	      behavior.

       POSIX_MADV_SEQUENTIAL
	      The  application	expects  to  access  the  specified  address range sequentially, running from lower addresses to higher addresses.
	      Hence, pages in this region can be aggressively read ahead, and may be freed soon after they are accessed.

       POSIX_MADV_RANDOM
	      The application expects to access the specified address range randomly.  Thus, read ahead may be less useful than normally.

       POSIX_MADV_WILLNEED
	      The application expects to access the specified address range in the near future.  Thus, read ahead may be beneficial.

       POSIX_MADV_DONTNEED
	      The application expects that it will not access the specified address range in the near future.

RETURN VALUE

       On success, posix_madvise() returns 0.  On failure, it returns a positive error number.

ERRORS

       EINVAL addr is not a multiple of the system page size or len is negative.

       EINVAL advice is invalid.

       ENOMEM Addresses in the specified range are partially or completely outside the caller's address space.

VERSIONS

       Support for posix_madvise() first appeared in glibc version 2.2.

CONFORMING TO

       POSIX.1-2001.

NOTES

       POSIX.1 permits an implementation to generate an error if len is 0.  On Linux, specifying len as 0 is permitted (as a successful no-op).

       In glibc, this function is implemented using madvise(2).  However, since glibc 2.6, POSIX_MADV_DONTNEED is treated as a no-op, because  the
       corresponding madvise(2) value, MADV_DONTNEED, has destructive semantics.

SEE ALSO

       madvise(2), posix_fadvise(2)

COLOPHON

       This  page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

Linux								    2017-09-15							  POSIX_MADVISE(3)

Programming