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How to check kernel info

 
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Top Forums UNIX for Dummies Questions & Answers How to check kernel info
# 1  
Old 08-25-2008
Question How to check kernel info
Hi, can anyone tell how can i check kernel memory and paging info etc.. thanks, Mazhar
# 2  
Old 08-25-2008
You can check the release, name and version of the kernel with:
Code:
uname -rsv

To check the memory, swap, etc:
Code:
free -m

# 3  
Old 08-25-2008
for virtual memory u can also use vmstat
# 4  
Old 08-25-2008
i am working on solaris 10 and want to see how much kernel is using memory... the command "free -m" did't work ... so far i search there is a command "kstat" work with modules.... for example kstat -p -m cpu_stat -s 'intr*'

cpu_stat is the module here
now i want to print all modules to perform different commands


thanks,


Mazhar
# 5  
Old 08-25-2008
Indeed, the kstat command displays information about the kernel under UNIX systems. You can see more arguments to use and some examples in the following link:

kstat(1M) – display kernel statistics (man pages section 1M: System Administration Commands) - Sun Microsystems

What was the output of the command that you put as an example?
Code:
kstat -p -m cpu_stat -s 'intr*'

It should display something similar to:
Code:
cpu_stat:0:cpu_stat0:intr       29682330
cpu_stat:0:cpu_stat0:intrblk    87
cpu_stat:0:cpu_stat0:intrthread 15054222
cpu_stat:1:cpu_stat1:intr       426073
cpu_stat:1:cpu_stat1:intrblk    51
cpu_stat:1:cpu_stat1:intrthread 289668
cpu_stat:2:cpu_stat2:intr       134160
cpu_stat:2:cpu_stat2:intrblk    0
cpu_stat:2:cpu_stat2:intrthread 131
cpu_stat:3:cpu_stat3:intr       196566
cpu_stat:3:cpu_stat3:intrblk    30
cpu_stat:3:cpu_stat3:intrthread 59626

Last edited by agasamapetilon; 08-25-2008 at 04:18 AM..
# 6  
Old 08-25-2008
This was my output

bash-3.00# kstat -p -m cpu_stat -s 'intr*'

cpu_stat:0:cpu_stat0:intr 57041377
cpu_stat:0:cpu_stat0:intrblk 17986
cpu_stat:0:cpu_stat0:intrthread 38618969



this is specific for one module cpu_stat

what if i want to display all available modules ? i dont want to give match result.

thanks,


Mazhar
# 7  
Old 08-25-2008
This command displays information about loaded kernel modules, if they are installed or not, loaded or not.
Code:
modinfo -c

Also you can look for the modules at:
Code:
/lib/modules

 
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