10 More Discussions You Might Find Interesting
1. Solaris
hello all
i have an issue about a solaris V440 cpu, im logged in the Ok prompt i can't disable a CPU3, i can't see it in dev list, i see only the cpu3-bank0 to cpu-bank4
please help me to disable it
thank youuu (3 Replies)
Discussion started by: walidadam
3 Replies
2. Solaris
Hello All,
How do I find the number of CPU's, virtual processors in solaris 10?
Thank you
Sunil Kumar (2 Replies)
Discussion started by: msgforsunil
2 Replies
3. Solaris
hi, dear all
I get a problem "VCS ERROR V-16-2-13077 " on VCS 4.1 for Solaris 10.
I can not offline the host2 when the raid is bad.
I don't know the reason and how to offline host2 and switch to host1.
please help me, thank you!
the message of engine_A.log is :
... (2 Replies)
Discussion started by: ForgetChen
2 Replies
4. Solaris
Hi ,
We are facing an issue on one of our solaris x86 server,
After changing the hostname and a orderly reboot , all metadevices shows offline.
please let us know the steps to restore back all metadevices to working state with this new hostname (3 Replies)
Discussion started by: karthick.sh
3 Replies
5. Solaris
Hi all
I've purchased a T3-1 server. The T3-1 has a 16 core CPU. I want to create a zone to install an Oracle DB server in. Due to Oracle licensing issues I want to limit the zone to 8 cores. I've done some research and it seems there are 2 ways of setting a CPU core limit for a zone.
1. ... (0 Replies)
Discussion started by: soliberus
0 Replies
6. UNIX for Advanced & Expert Users
I have two Solaris 10 T2000 systems.
Platform sun8 has newer firmware than sun7.
sun8/user$ prtdiag -v | grep OBP
OBP 4.30.4.b 2010/07/09 13:48
sun7/user$ prtdiag -v | grep OBP
OBP 4.30.4.a 2010/01/06 14:56
The platform (sun8) with the newer firmware (OBP 4.30.4.b) has a Fault... (2 Replies)
Discussion started by: DavidHalko
2 Replies
7. Solaris
Can anyone tell me difference between cpu-shares vs cpu-cap in solaris & how FSS will work with cpu-caps ? (9 Replies)
Discussion started by: fugitive
9 Replies
8. Solaris
Hello Friends,
On one of my Solaris 10 box, CPU usage shows 100% using "sar", "vmstat". However, it has 4 CPUs and prstat and glance are not showing enough processes to justify high CPU utilization.
=========================================================================
$ prstat -a
... (4 Replies)
Discussion started by: mahive
4 Replies
9. Solaris
hi all
how to find cpu core level in 8,9 and 10 .
thanks (2 Replies)
Discussion started by: kumarmani
2 Replies
10. UNIX for Advanced & Expert Users
Hi ,
How do i check that the CPU is online/offline in a multi CPU machine in Linux ?
i tired /proc/cpuinfo
dmesg
nothing gave me the currect CPU status.
Pls help !! (5 Replies)
Discussion started by: sars
5 Replies
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)