Re: [HACKERS] Re: [QUESTIONS] How to use memory instead of hd? - Mailing list pgsql-hackers

Göran Thyni wrote:
>
> Bruce Momjian wrote:
> >
> > >
> > > Bruce Momjian wrote:
> > > >
> > > Could we use mmap (instead of shmem) with MAP_ANON flag to get more memory
> > > for shared buffer pool ?
> > > I'm using FreeBSD, man mmap says:
> > Yes, we could.  I don't think we do because we an anon-mapped region is
> > the same as shmem, but if the limit is higher for anon mmap, we could
> > used it.
>
> It could be faster too,
> and it API is cleaner too (IMHO).
> If we resolve the fork/exec -> just fork problem in the server
> mmap would make a good improvment in simplicity and probably
> speed too.

     MAP_INHERIT
                 Permit regions to be inherited across execve(2) system calls.

 - exec isn't problem...

Vadim