If you have power 5 and higher with micro partition option and lpar uncapped thre is few parameters that you need to check
First you need to check your configuraction
Check there for Entitled Capacity and Online Virtual CPUs
and MODE
If your Lpars is in mode uncapped nad online virtual cpu value is higher then Entitled Capacity then it mean that you are using over-commitment
Entitled Capacity - means guarantied value of cpu
Online Virtual CPUs means maximum value of cpu your server can use.
You can get in to situation that lpar is using 90% of 0.2 of cpu it is not a problem because it can use max 2CPU and it dues not need it
best commend to make those views would be lparstat 1 10
and vmstat 1 10
for long term analysis i advice nmon or lpar2rdd tool
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 (11 Replies)
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... (3 Replies)
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... (1 Reply)
Hi,
may be this is an AIX noob question:
my current C++ application runs on Linux and is quite memory consuming. Therefore, the application writes a logfile after it has finished containing memory information, CPU information, information on the running other processes besides my application... (0 Replies)
Hi,
may be this is an AIX noob question:
my current C++ application runs on Linux and is quite memory consuming. Therefore, the application writes a logfile after it has finished containing memory information, CPU information, information on the running other processes besides my application... (5 Replies)
I've been more used to Solaris, but am now working on an IBM AIX box, P650
Certain commands like "top" are no longer available. Any ideas on where I can find help on this matter?
Christopher Freville
Alberquerque, NM (6 Replies)
Hi
Hope you are having a great weeknd !! I had a question and need your expertise for this :
I have 2 files File1 & File2(of same structure) which I need to compare on some columns. I need to find the values which are there in File2 but not in File 1 and put the Differences in another file... (5 Replies)
I have started a new job which requires AIX admin skills, which I have, and RHEL skills. Does anyone have a cheat sheet that if I know how to solve the problem in AIX how would I do that in RHEL? I was an IBM pre-sales technical trying to keep sales guys honest - not possible. Any other links to... (5 Replies)
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,... (6 Replies)
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,... (6 Replies)
Discussion started by: SkySmart
6 Replies
LEARN ABOUT MOJAVE
chcpu
CHCPU(8) System Administration CHCPU(8)NAME
chcpu - configure CPUs
SYNOPSIS
chcpu -c|-d|-e|-g cpu-list
chcpu -p mode
chcpu -r|-h|-V
DESCRIPTION
chcpu can modify the state of CPUs. It can enable or disable CPUs, scan for new CPUs, change the CPU dispatching mode of the underlying
hypervisor, and request CPUs from the hypervisor (configure) or return CPUs to the hypervisor (deconfigure).
Some options have a cpu-list argument. Use this argument to specify a comma-separated list of CPUs. The list can contain individual CPU
addresses or ranges of addresses. For example, 0,5,7,9-11 makes the command applicable to the CPUs with the addresses 0, 5, 7, 9, 10, and
11.
OPTIONS -c, --configure cpu-list
Configure the specified CPUs. Configuring a CPU means that the hypervisor takes a CPU from the CPU pool and assigns it to the vir-
tual hardware on which your kernel runs.
-d, --disable cpu-list
Disable the specified CPUs. Disabling a CPU means that the kernel sets it offline.
-e, --enable cpu-list
Enable the specified CPUs. Enabling a CPU means that the kernel sets it online. A CPU must be configured, see -c, before it can be
enabled.
-g, --deconfigure cpu-list
Deconfigure the specified CPUs. Deconfiguring a CPU means that the hypervisor removes the CPU from the virtual hardware on which
the Linux instance runs and returns it to the CPU pool. A CPU must be offline, see -d, before it can be deconfigured.
-p, --dispatch mode
Set the CPU dispatching mode (polarization). This option has an effect only if your hardware architecture and hypervisor support
CPU polarization. Available modes are:
horizontal The workload is spread across all available CPUs.
vertical The workload is concentrated on few CPUs.
-r, --rescan
Trigger a rescan of CPUs. After a rescan, the Linux kernel recognizes the new CPUs. Use this option on systems that do not auto-
matically detect newly attached CPUs.
-V, --version
Display version information and exit.
-h, --help
Display help text and exit.
RETURN CODES
chcpu has the following return codes:
0 success
1 failure
64 partial success
AUTHOR
Heiko Carstens <heiko.carstens@de.ibm.com>
COPYRIGHT
Copyright IBM Corp. 2011
SEE ALSO lscpu(1)AVAILABILITY
The chcpu command is part of the util-linux package and is available from Linux Kernel Archive <https://www.kernel.org/pub/linux/utils
/util-linux/>.
util-linux July 2014 CHCPU(8)