Re: Allow a per-tablespace effective_io_concurrency setting - Mailing list pgsql-hackers

From Andres Freund
Subject Re: Allow a per-tablespace effective_io_concurrency setting
Date
Msg-id 20150902164556.GF5286@alap3.anarazel.de
Whole thread Raw
In response to Re: Allow a per-tablespace effective_io_concurrency setting  (Tomas Vondra <tomas.vondra@2ndquadrant.com>)
List pgsql-hackers
On 2015-09-02 18:06:54 +0200, Tomas Vondra wrote:
> Maybe the best thing we can do is just completely abandon the "number of
> spindles" idea, and just say "number of I/O requests to prefetch". Possibly
> with an explanation of how to estimate it (devices * queue length).

I think that'd be a lot better.



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