Re: [HACKERS] Re: Anyone understand shared-memory space usage? - Mailing list pgsql-hackers

From Bruce Momjian
Subject Re: [HACKERS] Re: Anyone understand shared-memory space usage?
Date
Msg-id 199902230357.WAA03016@candle.pha.pa.us
Whole thread Raw
In response to Re: Anyone understand shared-memory space usage?  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: [HACKERS] Re: Anyone understand shared-memory space usage?  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
> I think it's entirely likely that this set of bugs can account for flaky
> behavior seen in installations with more than 256 shared-memory buffers
> (postmaster -B > 256), more than 256 simultaneously held locks (have no
> idea how to translate that into user terms), or more than 256 concurrent
> backends.  I'm still wondering whether that might describe Daryl
> Dunbar's problem with locks not getting released, for example.

People have reported sloness/bugs with hash index lookups.  Does this
relate to that?

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