| From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
|---|---|
| To: | Andrew Dunstan <andrew(at)dunslane(dot)net> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Dean Rasheed <dean(dot)a(dot)rasheed(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: WIP: extensible enums |
| Date: | 2010-10-20 00:51:16 |
| Message-ID: | AANLkTimcZwMOx3s6hkoaX-J7kT9mn_QVsK47HOq8Hm4L@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Tue, Oct 19, 2010 at 5:42 PM, Andrew Dunstan <andrew(at)dunslane(dot)net> wrote:
> Well a bit more testing shows some benefit. I've sorted out a few kinks, so
> this seems to work. In particular, with the above tables, the version
> imported from 9.0 can create have an index created in about the same time as
> on the fresh table (identical data, but all even numbered Oids).
>
> Of course, with lots of odd numbered Oids, if a label gets added the
> imported version will degrade in performance much more quickly.
I'm quite impressed by the amount of time and thought being put into
optimizing this. I didn't realize people cared so much about enum
performance; but it's good that they do.
I hope to see more such efforts in other parts of the system.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Robert Haas | 2010-10-20 00:53:07 | Re: Serializable snapshot isolation patch |
| Previous Message | Robert Haas | 2010-10-20 00:47:19 | Re: Domains versus arrays versus typmods |