Re: SSD + RAID - Mailing list pgsql-performance

From Brad Nicholson
Subject Re: SSD + RAID
Date
Msg-id 4AFDB260.10203@ca.afilias.info
Whole thread Raw
In response to Re: SSD + RAID  (Greg Smith <greg@2ndquadrant.com>)
Responses Re: SSD + RAID
Re: SSD + RAID
List pgsql-performance
Greg Smith wrote:
> Karl Denninger wrote:
>> With the write cache off on these disks they still are huge wins for
>> very-heavy-read applications, which many are.
> Very read-heavy applications would do better to buy a ton of RAM
> instead and just make sure they populate from permanent media (say by
> reading everything in early at sequential rates to prime the cache).
> There is an extremely narrow use-case where SSDs are the right
> technology, and it's only in a subset even of read-heavy apps where
> they make sense.

Out of curiosity, what are those narrow use cases where you think SSD's
are the correct technology?

--
Brad Nicholson  416-673-4106
Database Administrator, Afilias Canada Corp.


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