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Re: Page Checksums + Double Writes

From: Rob Wultsch <wultsch(at)gmail(dot)com>
To: David Fetter <david(at)fetter(dot)org>
Cc: PG Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Page Checksums + Double Writes
Date: 2011-12-22 00:18:33
Message-ID: CAGdn2ui4cjOK-eQAoKB1zd-Am0nHtDAegKUm+60W8Jt+6gUDQQ@mail.gmail.com (view raw or flat)
Thread:
Lists: pgsql-hackers
On Wed, Dec 21, 2011 at 1:59 PM, David Fetter <david(at)fetter(dot)org> wrote:
> One of the things VMware is working on is double writes, per previous
> discussions of how, for example, InnoDB does things.

The world is moving to flash, and the lifetime of flash is measured
writes. Potentially doubling the number of writes is potentially
halving the life of the flash.

Something to think about...

-- 
Rob Wultsch
wultsch(at)gmail(dot)com

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