How to calculate total number of cores on my servers ? Post: 303035259

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Operating Systems Solaris How to calculate total number of cores on my servers ? Post 303035259 by ron323232 on Friday 17th of May 2019 05:57:00 PM

05-17-2019

Registered User

Looks like I missed something. I want to set 1 core for one non-global zone. But even after setting up ncpu in zone configuration, I still see all core and vCPUs inside zone.

Code:

bash-3.2# kstat cpu_info|grep core_id|sort -u|wc -l
       4
bash-3.2# kstat -m cpu_info | nawk '$2=="on-line" {lcpu++} $1=="pg_id" && s[$2]++==0 {core++} END {print core?core+0:lcpu+0}'
32
bash-3.2# zonecfg -z zone1 info capped-cpu
capped-cpu:
        [ncpus: 1.00]
bash-3.2# zlogin zone1
[Connected to zone 'zone1' pts/4]
Last login: Fri May 17 14:50:23 on pts/4
Sun Microsystems Inc.   SunOS 5.10      Generic January 2005
You have new mail.
# kstat cpu_info|grep core_id|sort -u|wc -l
       4
# kstat -m cpu_info | nawk '$2=="on-line" {lcpu++} $1=="pg_id" && s[$2]++==0 {core++} END {print core?core+0:lcpu+0}'
32
#

But if I set dedicated CPU, it shows me correct CPU. Should above example not show me out as 1 , because I set ncpu 1 ?

Code:

bash-3.2# zonecfg -z zone1 info dedicated-cpu
dedicated-cpu:
        ncpus: 3
bash-3.2#
bash-3.2# zlogin zone1
[Connected to zone 'zone1' pts/4]
Last login: Fri May 17 14:54:22 on pts/4
Sun Microsystems Inc.   SunOS 5.10      Generic January 2005
You have new mail.
# kstat cpu_info|grep core_id|sort -u|wc -l
       1
# kstat -m cpu_info | nawk '$2=="on-line" {lcpu++} $1=="pg_id" && s[$2]++==0 {core++} END {print core?core+0:lcpu+0}'
3
#

I wanted to restrict core with this zone. But looks like, it is restricting vCPU. isn't ?

Last edited by ron323232; 05-17-2019 at 07:11 PM..

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LEARN ABOUT SUSE

install-solaris

install-solaris(1M)													       install-solaris(1M)

NAME

       install-solaris - install the Solaris operating system

SYNOPSIS

       install-solaris

       install-solaris	invokes  the  Solaris  Install	program. Depending on graphical capability and available memory at the time of invocation,
       install-solaris invokes either a text-based installer or a graphical installer.

       The following minimum requirements for physical memory dictate which features are available during installation:

       For SPARC machines:

       128 MB

	   Minimum physical memory for all installation types

       128 MB

	   Minimum physical memory required for windowing system

       384 MB

	   Minimum physical memory required for graphical-based installation

       For x86 machines:

       256 MB

	   Minimum physical memory for all installation types

       256 MB

	   Minimum physical memory required for windowing system

       512 MB

	   Minimum physical memory required for graphical-based installation

       In some cases, even if the minimum physical memory is present, available virtual memory after system startup can limit the number  of  fea-
       tures available.

       install-solaris	exists	only  on  the Solaris installation media (CD or DVD) and should be invoked only from there. Refer to the  for more
       details.

       install-solaris allows installation of the operating system onto any standalone system. install-solaris loads the software available on the
       installation media. Refer to the  for disk space requirements.

       Refer to the  for more information on the various menus and selections.

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Availability		     |SUNWcdrom  (Solaris instal-  |
       |			     |lation media)		   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Evolving			   |
       +-----------------------------+-----------------------------+

       pkginfo(1), install(1M), pkgadd(1M), attributes(5)

       It is advisable to exit install-solaris by means of the exit options in the install-solaris menus.

								    23 Sep 2005 					       install-solaris(1M)