writing a simple script to get total number of cpus/cores in server
Hi,
I am very new to scripting and I wanted to write a unix shell script which can give me,
1)number of cpu's in a box
2)number of cores per cpu
3)total number of cores in abox (ie multiplying 1&2)
I am also trying to figure out how to check if hyper-threading is enabled in the server and also this check to script.
intially I am looking this to run on linux then wanted to implement it on other flavours of unix.
below is my script..
Code:
#!/bin/sh
if [ ! -r /proc/cpuinfo ]; then
echo "Is this Linux? Cannot find or read /proc/cpuinfo"
exit 1
fi
echo num_cpus = `grep 'physical id' /proc/cpuinfo | sort -u | wc -l`
read num_cpu
echo num_cores_per_cpu=`grep 'core id' /proc/cpuinfo | sort -u | wc -l`
read num_cores_per_cpu
echo total_cores=`expr $num_cpus \\* num_cores_per_cpu` --this part is not working..
if [ $num_cores -eq 0 ]; then
# this box is either an old SMP or single-CPU box, so count the # of processors
echo num_cores=`grep '^processor' /proc/cpuinfo | sort -u | wc -l`
fi
#echo $num_cores_per_cpu
any help is much appreciated.
thanks,
Steve.
Moderator's Comments:
How to use code tags when posting data and code samples.
Last edited by Franklin52; 01-19-2012 at 03:24 PM..
Reason: Please use code tags for data and code samples, thank you
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Discussion started by: ron323232
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LEARN ABOUT FREEBSD
siba
SIBA(4) BSD Kernel Interfaces Manual SIBA(4)NAME
siba -- Sonic Inc. Silicon Backplane driver
SYNOPSIS
To compile this driver into the kernel, place the following lines in your kernel configuration file:
device siba
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
siba_load="YES"
DESCRIPTION
The siba driver supports the Sonic Inc. Silicon Backplane, the interblock communications architecture that can be found in most Broadcom
wireless NICs.
A bus connects all of the Silicon Backplane's functional blocks. These functional blocks, known as cores, use the Open Core Protocol (OCP)
interface to communicate with agents attached to the Silicon Backplane.
Each NIC uses a chip from the same chip family. Each member of the family contains a different set of cores, but shares basic architectural
features such as address space definition, interrupt and error architecture, and backplane register definitions.
Each core can have an initiator agent that passes read and write requests onto the system backplane and a target agent that returns responses
to those requests. Not all cores contain both an initiator and a target agent. Initiator agents are present in cores that contain host
interfaces (PCI, PCMCIA), embedded processors (MIPS), or DMA processors associated with communications cores.
All cores other than PCMCIA have a target agent.
SEE ALSO bwn(4)HISTORY
The siba device driver first appeared in FreeBSD 8.0.
AUTHORS
The siba driver was written by Bruce M. Simpson <bms@FreeBSD.org> and Weongyo Jeong <weongyo@FreeBSD.org>.
CAVEATS
Host mode is not supported at this moment.
BSD January 8, 2010 BSD
01-19-2012
