| From: | Heikki Linnakangas <heikki(at)enterprisedb(dot)com> |
|---|---|
| To: | Bruce Momjian <bruce(at)momjian(dot)us> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org>, Neil Conway <neilc(at)samurai(dot)com>, ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp> |
| Subject: | Re: Status of 8.3 patches |
| Date: | 2007-08-20 19:54:50 |
| Message-ID: | 46C9F18A.5050302@enterprisedb.com |
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| Lists: | pgsql-hackers |
Bruce Momjian wrote:
> o Automatic adjustment of bgwriter_lru_maxpages
>
> We show this as waiting for performance results. I am thinking we
> should hold this for 8.4.
Agreed. I spent close to a week trying different benchmarks and
configurations and simple test cases on a test server and my laptop, and
couldn't demonstrate bgwriter making a positive impact in any
configuration I tried. The theory behind the patch is sound, but it
looks like a lot more testing and analysis is needed.
> o Error correction for n_dead_tuples
>
> This shows as waiting on another patch. Again, I am thinking to
> keep it for 8.4.
It was waiting on the "vacuum oldestxmin" patch, which didn't make it to
8.3. I don't care for the patch myself, but it was submitted well before
feature freeze and deserves a review. It looks good to me at first glance.
--
Heikki Linnakangas
EnterpriseDB http://www.enterprisedb.com
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