kern.ipc.shm_allow_removed

[Luke Dean]

The latest version of Opera claims to be faster by taking advantage of 
shared X memory if I set the sysctl kern.ipc.shm_allow_removed.


I don't like to change sysctls from their default settings unless I 
understand the consequences.  I've been unable to find a manpage that 
describes this setting.  The description Enable/Disable attachment to 
attached segments marked for removal sounds a bit frightening to me.


Would anyone care to comment on the effects and risks of changing this 
setting on a private desktop machine?

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kern.ipc.shm_allow_removed, what does this variable mean?

[Lyubich, M.]

Hello,

installing vmware. One have to set

kern.ipc.shm_allow_removed=1 in /etc/sysctl.conf

From the name, I can deduce that shm_allow_removed means something like
shared memory allow to be removed. Isn't it?

But what are the consequences from the use of this variable?

Regards,
ML
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