Re: Anyone for SSDs?
| От | Robert Haas |
|---|---|
| Тема | Re: Anyone for SSDs? |
| Дата | |
| Msg-id | AANLkTinpYcyz+E4N=br3946jbLRpV1bFmJO4eBi7CqkS@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: Anyone for SSDs? (Josh Berkus <josh@agliodbs.com>) |
| Ответы |
Re: Anyone for SSDs?
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| Список | pgsql-hackers |
On Fri, Dec 10, 2010 at 6:08 PM, Josh Berkus <josh@agliodbs.com> wrote: > Heck, even RAM isn't 1.0. I'm also involved with the Redis project, > which is an in-memory database. Even for a pure-RAM database, it turns > out that just using linked lists and 100% random access is slower than > accessing page images. That's a slightly different problem, though. Sequential vs. random access is about whether fetching pages n, n+1, n+2, ... is faster than skipping around, not whether accessing fewer pages is faster than more. -- Robert Haas EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company
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