| From: | Peter Geoghegan <pg(at)heroku(dot)com> |
|---|---|
| To: | Merlin Moncure <mmoncure(at)gmail(dot)com> |
| Cc: | Andres Freund <andres(at)2ndquadrant(dot)com>, Heikki Linnakangas <hlinnakangas(at)vmware(dot)com>, Stephen Frost <sfrost(at)snowman(dot)net>, Greg Stark <stark(at)mit(dot)edu>, Robert Haas <robertmhaas(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>, Mitsumasa KONDO <kondo(dot)mitsumasa(at)gmail(dot)com> |
| Subject: | Re: Clock sweep not caching enough B-Tree leaf pages? |
| Date: | 2014-04-17 18:55:51 |
| Message-ID: | CAM3SWZRpZDSutA4AgwPEAcvAGWYeem+WQRozfU5AWPx9WH7cNw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On Thu, Apr 17, 2014 at 11:53 AM, Merlin Moncure <mmoncure(at)gmail(dot)com> wrote:
> No. but if you were very judicious, maybe you could hint the o/s
> (posix_fadvise) about pages that are likely to stay hot that you don't
> need them.
Mitsumasa KONDO wrote a patch like that. I don't think the results
were that promising, but things change quickly.
--
Peter Geoghegan
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