On 20/10/10 15:10, Robert Haas wrote:
> On Tue, Oct 19, 2010 at 8:39 PM, Hsien-Wen Chu<chu.hsien.wen@gmail.com> wrote:
>
>> I want to use hugepage function on Linux platform, my question is if
>> PostgreSQL supports hugepage in default, if not, what's the code need to be
>> modified?
>>
> Unfortunately, I don't think this is too simple. PostgreSQL uses sysv
> shared memory, not POSIX shared memory. I don't know of a way to use
> sysv shared memory with hugetlb.
>
>
According to:
http://devresources.linuxfoundation.org/dev/robustmutexes/src/fusyn.hg/Documentation/vm/hugetlbpage.txt
shmget and friends are hugetlbpage aware, so it seems it should 'just
work'. However, I have not checked...
Cheers
Mark