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тАО01-19-2010 07:52 PM
тАО01-19-2010 07:52 PM
Current executable_stack is 1 and i want to change this to 0.
This is a static parameter. Does it require reboot ?
My OS version is HP-UX 11.11
model is rp3440
I didn't find the kctune utility. Can we do it by using kmtune?
Please give me the steps to change the executable_stack parameter to 0 by using kmtune.
Solved! Go to Solution.
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тАО01-19-2010 08:05 PM
тАО01-19-2010 08:05 PM
Re: kernel parameter
dynamic not.
if u not sure do it with SAM pretty simple.
BR,
Kapil+
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тАО01-19-2010 08:12 PM
тАО01-19-2010 08:12 PM
Re: kernel parameter
kmtune -s executable_stack=0
BR,
Kapil+
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тАО01-19-2010 09:38 PM
тАО01-19-2010 09:38 PM
SolutionYes, It require reboot (all Static parameter require reboot to take effect)
better if you could you "SAM" -its easy and simple to use.
one more important thing if you could "Ignite backup" for OS before you perform the "kernel parameter" change to in the safer side
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тАО01-19-2010 10:51 PM
тАО01-19-2010 10:51 PM
Re: kernel parameter
Make a copy /stand/vmunix and /stand/system before executing the below steps
Below are command line steps
1)cd /stand/build ; rm -r *
2)/usr/lbin/sysadm/system_prep -v -s /stand/build/system
3)Change the required Kernel parameters
kmtune -s executable_stack=0 -S /stand/build/system
4)cp /stand/build/system /stand/system
5)mk_kernel
6)km_update
7)cd / ; shutdown -ry 0 now
Sagar
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тАО01-19-2010 10:53 PM
тАО01-19-2010 10:53 PM
Re: kernel parameter
Because "SAM" will automatically backup your current kernal and compile a new kernal and the Server will automatically reboot
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тАО01-19-2010 11:43 PM
тАО01-19-2010 11:43 PM
Re: kernel parameter
If you are confident over command line go thru that and you will know what happens when you do the tuning. SAM does the same.Remember, all static parameters do need reboot but not for dynamic.Dynamic parameters can be changed as required.
==============
Do a copy of /stand/vmunix also incase you face any issue to boot with the new kernel,can be booted from the copied one.
Eg. cp -p /stand/vmunix /stand/vmunix_date
1)cd /stand/build ; rm -r *
2)/usr/lbin/sysadm/system_prep -v -s /stand/build/system
3)Change the required Kernel parameters
kmtune -s executable_stack=0 -S /stand/build/system
4)cp /stand/build/system /stand/system
5)mk_kernel
6)km_update
7)cd / ; shutdown -ry 0 now
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тАО01-20-2010 01:01 AM
тАО01-20-2010 01:01 AM
Re: kernel parameter
I have send an email to my TeamLead for the schedule of this to reset the parameter.
Thanks!!
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тАО01-20-2010 01:18 AM
тАО01-20-2010 01:18 AM
Re: kernel parameter
This tunable has no effect on system behavior unless an application attempts to execute instructions located on its stacks. The majority of HP-UX applications are not programmed to do this.
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тАО01-20-2010 01:18 AM
тАО01-20-2010 01:18 AM
Re: kernel parameter
http://www.docs.hp.com/en/B2355-60105/executable_stack.5.html