Re: 10K vs 15k rpm for analytics

From: Francisco Reyes <lists(at)stringsutils(dot)com>
To: Greg Smith <greg(at)2ndquadrant(dot)com>
Cc: Yeb Havinga <yebhavinga(at)gmail(dot)com>, Pgsql performance <pgsql-performance(at)postgresql(dot)org>
Subject: Re: 10K vs 15k rpm for analytics
Date: 2010-03-02 21:53:09
Message-ID: cone.1267566789.958128.32557.1000@shelca
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Greg Smith writes:

> in a RAID10, given proper read-ahead adjustment. I get over 200MB/s out
> of the 3-disk RAID0 on my home server without even trying hard. Can you

Any links/suggested reading on "read-ahead adjustment". I understand this
may be OS specific, but any info would be helpfull.

Currently have 24 x 10K rpm drives and only getting about 400MB/sec.

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