Re: SSD performance - Mailing list pgsql-performance

From Florian Weimer
Subject Re: SSD performance
Date
Msg-id 82fxja2iyl.fsf@mid.bfk.de
Whole thread Raw
In response to Re: SSD performance  (Craig Ringer <craig@postnewspapers.com.au>)
List pgsql-performance
* Craig Ringer:

> I'd be much more confident with something like those devices than I
> would with an OS ramdisk plus startup/shutdown scripts to initialize it
> from a file and write it out to a file. Wouldn't it be a pain if the UPS
> didn't give the OS enough warning to write the RAM disk out before
> losing power...

The cache warm-up time can also be quite annoying.  Of course, with
flash-backed DRAM, this is a concern as long as you use the cheaper,
slower variants for the backing storage.

--
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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