From: | Jeff Davis <pgsql(at)j-davis(dot)com> |
---|---|
To: | Simon Riggs <simon(at)2ndquadrant(dot)com> |
Cc: | pgsql-patches(at)postgresql(dot)org |
Subject: | Re: Synchronized Scan WIP patch |
Date: | 2007-03-15 16:44:07 |
Message-ID: | 1173977047.23455.259.camel@dogma.v10.wvs |
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Thread: | |
Lists: | pgsql-patches |
On Thu, 2007-03-15 at 08:27 +0000, Simon Riggs wrote:
> On Wed, 2007-03-14 at 01:42 -0700, Jeff Davis wrote:
> > SYNC_SCAN_REPORT_INTERVAL 100
>
> Jeff,
>
> This will stop SeqScans from working with buffer recycling, unless we
> put the recycle limit to more than 100. That was why I requested you set
> this to 16, so we can use a recycle buffer of 32.
>
Yes, you're correct. If it's set at 100 it should still work by using
the OS buffer cache to catch up (and then be within a few buffers), but
I think you're right that 16 is the correct value.
I'll change my patch to be 16. I don't think I need to send along a
diff ;)
Thanks,
Jeff Davis
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