Re: Design notes for BufMgrLock rewrite - Mailing list pgsql-hackers

From Simon Riggs
Subject Re: Design notes for BufMgrLock rewrite
Date
Msg-id 1109027249.3801.149.camel@localhost.localdomain
Whole thread Raw
In response to Re: Design notes for BufMgrLock rewrite  (Tom Lane <tgl@sss.pgh.pa.us>)
Responses Re: Design notes for BufMgrLock rewrite
List pgsql-hackers
On Mon, 2005-02-21 at 18:01 -0500, Tom Lane wrote:
> Simon Riggs <simon@2ndquadrant.com> writes:
> > [I'm assuming that there are no system-wide locks held across I/Os, that
> > bit seems a bit unclear from the description]
> 
> That's always been true and still is, so I didn't dwell on it.  Only a
> per-buffer lock is held while doing either input or output.

[Me too, thats why its in brackets at the bottom.]

...but do you agree with my comments on the lack of scalability in cache
miss situations?

Best Regards, Simon Riggs



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