| From: | Jeff Davis <pgsql(at)j-davis(dot)com> |
|---|---|
| To: | Heikki Linnakangas <heikki(at)enterprisedb(dot)com> |
| Cc: | Simon Riggs <simon(at)2ndquadrant(dot)com>, pgsql-patches(at)postgresql(dot)org |
| Subject: | Re: scan_recycle_buffers |
| Date: | 2007-03-10 00:17:34 |
| Message-ID: | 1173485854.23455.10.camel@dogma.v10.wvs |
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| Lists: | pgsql-hackers pgsql-patches |
On Fri, 2007-03-09 at 20:08 +0000, Heikki Linnakangas wrote:
> Simon Riggs wrote:
> > Patch to implement buffer cache recycling for scans, as being discussed
> > on pgsql-hackers.
>
> A few questions come to mind:
>
> How does it behave with Jeff's synchronized seq scans patch?
>
I will test it and post my results. I would expect that the CPU usage
will increase, but it might not make a big difference in the overall
cache hit rate if you count OS buffer cache hits.
Regards,
Jeff Davis
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