solaris 10 kernel parameters

From: Joe Smith <joe_dba_at_hotmail.com>
Date: Wed, 7 Oct 2009 20:51:30 -0500
Message-ID: <BLU108-W14386FB55112F0F227470997CC0_at_phx.gbl>

What do most people do:  

Keep using /etc/system in Solaris 10 or the Resouce Control Facility? Or do people ignore the parameters and not set any in /etc/system or the Resouce Control?  

I have a unix admin saying nothing needs to be set because they read that /etc/system is not used in Solaris 10 anymore. Below is from a doc on metalink. At the minimun the new kernel parameters for Solaris 10 need to be set. Is this correct?    

Is NOEXEC_USER_STACK 1 set in /etc/system or the Resouce Control?    

SEMMNI 100 *** 
SEMMNS 1024 ** 
SEMMSL 256 *** 

SEMVMX 32767 **
SHMMAX 4294967295
SHMMIN 1 *
SHMMNI 100***
SHMSEG 10 *
NOEXEC_USER_STACK 1

* obsolete in Solaris 9 and 10 
** obsolete in Solaris 10 
*** default value in Solaris 10 is already larger 

Note: for Solaris 10 SHMMAX which is now set through the Resource Control Facility not /etc/system. Refer to the 10gR2 for Solaris SPARC Installation guide for steps to do this, as well as, the Release Notes which has corrections:  

10.2 Install Guides and Release Notes

Here are the new names of the kernel parameters for Solaris 10 (Solaris 9 equivalents are in parentheses):

project.max-sem-ids 100 (semmni) 
process.max-sem-nsems 256 (semmsl) 
project.max-shm-memory 4294967295 (shmmax) 
project.max-shm-ids 100 (shmmni)  		 	   		  
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Received on Wed Oct 07 2009 - 20:51:30 CDT