| From: | Peter Geoghegan <pg(at)heroku(dot)com> |
|---|---|
| To: | Andres Freund <andres(at)anarazel(dot)de> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Kevin Grittner <kgrittn(at)gmail(dot)com>, Robert Haas <robertmhaas(at)gmail(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: _mdfd_getseg can be expensive |
| Date: | 2016-08-31 22:15:16 |
| Message-ID: | CAM3SWZToP8HdHcwe1=9TXkZbwFnyVOkyRJgTcgDnJ+u30BsUkQ@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On Wed, Aug 31, 2016 at 3:08 PM, Andres Freund <andres(at)anarazel(dot)de> wrote:
> On August 31, 2016 3:06:23 PM PDT, Peter Geoghegan <pg(at)heroku(dot)com> wrote:
>
>>In other painfully pedantic news, I should point out that
>>sizeof(size_t) isn't necessarily word size (the most generic
>>definition of word size for the architecture), contrary to my reading
>>of the 0002-* patch comments. I'm mostly talking thinking about x86_64
>>here, of course.
>
> Uh?
Sorry, I really should have not said anything. It is true that x86_64
word size is sometimes reported as 16 and/or 32 bits [1], because of
legacy issues.
[1] https://en.wikipedia.org/wiki/Word_(computer_architecture)#Table_of_word_sizes
--
Peter Geoghegan
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Corey Huinker | 2016-08-31 22:31:44 | Re: [Patch] Temporary tables that do not bloat pg_catalog (a.k.a fast temp tables) |
| Previous Message | Vik Fearing | 2016-08-31 22:12:57 | Re: autonomous transactions |