random_page_costs - are defaults of 4.0 realistic for SCSI RAID 1

From: "Carlo Stonebanks" <stonec(dot)register(at)sympatico(dot)ca>
To: pgsql-performance(at)postgresql(dot)org
Subject: random_page_costs - are defaults of 4.0 realistic for SCSI RAID 1
Date: 2007-09-10 19:25:41
Message-ID: fc45mi$1tj9$1@news.hub.org
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Can anyone answer this for me: Although I realize my client's disk subsystem
(SCSI/RAID Smart Array E200 controller using RAID 1) is less than
impressive - is the default setting of 4.0 realistic or could it be lower?

Thanks!

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