| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Mark Mielke <mark(at)mark(dot)mielke(dot)cc> |
| Cc: | Alvaro Herrera <alvherre(at)commandprompt(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Bruce Momjian <bruce(at)momjian(dot)us>, pgsql-hackers(at)postgresql(dot)org, "Jignesh K(dot) Shah" <J(dot)K(dot)Shah(at)Sun(dot)COM> |
| Subject: | Re: Reducing Transaction Start/End Contention |
| Date: | 2008-03-13 15:56:33 |
| Message-ID: | 18080.1205423793@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Mark Mielke <mark(at)mark(dot)mielke(dot)cc> writes:
> Alvaro Herrera wrote:
>> How about this wording:
>> "Review Simon's claims to improve performance
> What sort of evidence is usually compelling? It seems to me that this
> sort of change only benefits configurations with dozens or more CPUs/cores?
The main point in my mind was that that analysis was based on the code
as it then stood. Florian's work to reduce ProcArrayLock contention
might have invalidated some or all of the ideas. So it needs a fresh
look.
regards, tom lane
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