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Re: BBU Cache vs. spindles

From: "Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov>
To: "Greg Smith" <greg(at)2ndquadrant(dot)com>, "Rob Wultsch" <wultsch(at)gmail(dot)com>
Cc: <jd(at)commandprompt(dot)com>,"Scott Marlowe" <scott(dot)marlowe(at)gmail(dot)com>, "Bruce Momjian" <bruce(at)momjian(dot)us>, "Steve Crawford" <scrawford(at)pinpointresearch(dot)com>, <pgsql-performance(at)postgresql(dot)org>, "Ben Chobot" <bench(at)silentmedia(dot)com>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Subject: Re: BBU Cache vs. spindles
Date: 2010-10-22 17:28:17
Message-ID: 4CC183610200002500036CDC@gw.wicourts.gov (view raw or flat)
Thread:
Lists: pgsql-performancepgsql-www
Rob Wultsch <wultsch(at)gmail(dot)com> wrote:
 
> has PG considered using a double write buffer similar to InnodB?
 
That seems inferior to the full_page_writes strategy, where you only
write a page twice the first time it is written after a checkpoint. 
We're talking about when we might be able to write *less*, not more.
 
-Kevin

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