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Re: Patch für MAP_HUGETLB for mmap() shared memory - Mailing list pgsql-hackers

From Tom Lane
Subject Re: Patch für MAP_HUGETLB for mmap() shared memory
Date
Msg-id 23899.1351542805@sss.pgh.pa.us
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In response to Patch für MAP_HUGETLB for mmap() shared memory  (Christian Kruse <cjk+postgres@defunct.ch>)
Responses Re: Patch für MAP_HUGETLB for mmap() sharedmemory  (Andres Freund <andres@2ndquadrant.com>)
Re: Patch fürMAP_HUGETLB for mmap() shared memory  (Christian Kruse <cjk+postgres@defunct.ch>)
Re: Patch für MAP_HUGETLB for mmap() shared memory  (Christian Kruse <cjk@defunct.ch>)
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Christian Kruse <cjk+postgres@defunct.ch> writes:
> I created a patch which implements MAP_HUGETLB for sysv shared memory segments
> (PGSharedMemoryCreate). It is based on tests of Tom Lane and Andres Freund, I
> added error handling, huge page size detection and a GUC variable.

My recollection is we'd decided not to pursue that because of fears that
it could make performance horribly worse on some platforms.

            regards, tom lane

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