Re: raid10 write performance - Mailing list pgsql-performance

From Florian Weimer
Subject Re: raid10 write performance
Date
Msg-id 82fx0et0ve.fsf@mid.bfk.de
Whole thread Raw
In response to Re: raid10 write performance  (Ivan Voras <ivoras@freebsd.org>)
Responses Re: raid10 write performance  (Ivan Voras <ivoras@freebsd.org>)
List pgsql-performance
* Ivan Voras:

> On the other hand, RAID10 is simple enough that soft-RAID
> implementations should be more than adequate - any ideas why a dedicated
> card has it "slow"?

Barrier support on RAID10 seems to require some smallish amount of
non-volatile storage which supports a high number of write operations
per second, so a software-only solution might not be available.

--
Florian Weimer                <fweimer@bfk.de>
BFK edv-consulting GmbH       http://www.bfk.de/
Kriegsstraße 100              tel: +49-721-96201-1
D-76133 Karlsruhe             fax: +49-721-96201-99

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