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extremly huge shmmax value

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Operating Systems Linux SuSE extremly huge shmmax value
# 1  
Old 09-21-2009
extremly huge shmmax value
Hello all!

On this SLES 10 box I found (what I think) an abnormal huge shmmax value.

hostname:~ # cat /proc/sys/kernel/shmmax
18446744073709551615
hostname:~ #

Perhaps there is a malconfigured startup script on the machine somwhere? But where/how do I find/set the default value of shmmax in SLES 10?

//sap4ever
Last edited by sap4ever; 09-21-2009 at 08:29 AM..
# 2  
Old 09-21-2009
The max possible shmmax value is 18446744073709551615 for 64 bit. Which is what you have.

Here is an article on setting the shmmax value:
comp.os.linux.setup: PERMANENTLY setting shmmax in Linux - Suse Personal Edition 8.2
# 3  
Old 09-21-2009
Quote:
Originally Posted by jim mcnamara
The max possible shmmax value is 18446744073709551615 for 64 bit. Which is what you have.

Here is an article on setting the shmmax value:
comp.os.linux.setup: PERMANENTLY setting shmmax in Linux - Suse Personal Edition 8.2

Ok, thanks,

I found we have that value on more of our SLES10 SP2 systems.
And in the boot log, it looks like it's set "unlimited" with a "-1"

hostname:/var/log # grep shmmax boot.msg
kernel.shmmax = -1

Can you think of any problem keeping this that way?

//sap4ever
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