| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
| Cc: | Andres Freund <andres(at)anarazel(dot)de>, Alvaro Herrera <alvherre(at)2ndquadrant(dot)com>, Thomas Munro <thomas(dot)munro(at)enterprisedb(dot)com>, Dilip Kumar <dilipbalaut(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: shared memory based stat collector (was: Sharing record typmods between backends) |
| Date: | 2017-08-14 17:26:39 |
| Message-ID: | 12351.1502731599@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Robert Haas <robertmhaas(at)gmail(dot)com> writes:
> I think it would be a bad idea to remove both
> dynamic_shared_memory_type=none and dynamic_shared_memory_type=mmap.
> If you do that, then somebody who doesn't have root and whose system
> configuration is messed up can't start PostgreSQL at all.
I'd be happy to leave the mmap option in place if it were getting
tested regularly. As things stand, I'm doubtful that someone who
was stuck in this hypothetical bad place could rely on it to work
at all.
regards, tom lane
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