Re: [HACKERS] removing the exec() from doexec()

> This exec() takes 15% of our startup time.  I have wanted it removed for
> many releases now.  The only problem is to rip out the code that
> re-attached to shared memory and stuff like that, because you will no
> longer loose the shared memory in the exec().  The IPC code is
> complicated, so good luck.  I or others can help if you get stuck.
> 

Another item is to no longer use SYSV shared memory but use
mmap(MAP_ANON) because this allows a much larger amount of shared memory
to be used.

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