Re: Multiple Indexing, performance impact

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От Tom Lane
Тема Re: Multiple Indexing, performance impact
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Msg-id 7350.993272027@sss.pgh.pa.us
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Ответ на Re: Multiple Indexing, performance impact  (Lincoln Yeoh <lyeoh@pop.jaring.my>)
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Lincoln Yeoh <lyeoh@pop.jaring.my> writes:
> Why is SHMMAX so low on some O/Ses?

Historical artifact, I think: the SysV IPC code was developed on
machines that were tiny by current standards.  Unfortunately, vendors
haven't stopped to review their kernel parameters and scale them up
appropriately.

            regards, tom lane

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