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Re: Spinlocks and semaphores in 9.2 and 9.3 - Mailing list pgsql-hackers

From Andres Freund
Subject Re: Spinlocks and semaphores in 9.2 and 9.3
Date
Msg-id 20160418152707.ojoeurr3bniyrnr2@alap3.anarazel.de
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In response to Re: Spinlocks and semaphores in 9.2 and 9.3  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Spinlocks and semaphores in 9.2 and 9.3  (Tom Lane <tgl@sss.pgh.pa.us>)
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On 2016-04-18 11:24:07 -0400, Tom Lane wrote:
> (The thing that gave me pause about this was noticing that I could not
> start two such postmasters concurrently on my RHEL6 box, without changing
> the default system limits on number of SysV semaphores.)

Hm, is that different before/after the patch? Because afaics at around
NBuffers = 1000, the number of semaphores should be lower after the
patch?

Andres

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