Re: Seeing context switch storm with 10/13 snapshot of

[Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>]

Tom Lane wrote:
> Simon Riggs <simon(at)2ndquadrant(dot)com> writes:
> > Certainly there is a lack of ideas as to how to fix it, as you mention
> > in (3). This shows to me that the solution lies in one of two areas: a)
> > the solution has not yet been considered or b) the solution has already
> > been thought of and for whatever reason disregarded. You may be certain
> > that the solution lies in a), though I am not. Rejecting ideas quickly
> > may simply increase the chances of finding the solution in a b) case.
> 
> However, building a spinlock test harness presupposes that the solution
> lies in the spinlock code itself, and not in (say) changing our usage
> patterns of it.  So I'd throw the "rejecting ideas too quickly"
> challenge right back at you.  What we need to optimize is the behavior
> in the real context of Postgres, not in a test harness.

How do other databases deal with this?  I can't imagine we are the only
ones.  Are we doing something different than them?

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