How to check kernel info

mazhar99 · #1 (**permalink**) 08-25-2008

Hi, can anyone tell how can i check kernel memory and paging info etc.. thanks, Mazhar

agasamapetilon · #2 (**permalink**) 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

replytoshishir · #3 (**permalink**) 08-25-2008

for virtual memory u can also use vmstat

mazhar99 · #4 (**permalink**) 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

agasamapetilon · #5 (**permalink**) 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

mazhar99 · #6 (**permalink**) 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

agasamapetilon · #7 (**permalink**) 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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