Re: Suggestions for a HBA controller (6 x SSDs + madam RAID10)

From: Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com>
To: Pietro Pugni <pietro(dot)pugni(at)gmail(dot)com>
Cc: "pgsql-performance(at)postgresql(dot)org" <pgsql-performance(at)postgresql(dot)org>
Subject: Re: Suggestions for a HBA controller (6 x SSDs + madam RAID10)
Date: 2017-02-21 20:09:12
Message-ID: CAOR=d=299wcezQb8m8PFR+uT4Kj2Z2cRtw9MBd_BDHj47kZnCQ@mail.gmail.com
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Suggestion #1 is to turn off any write caching on the RAID controller.
Using LSI MegaRAID we went from 3k to 5k tps to 18k just turning off write
caching. Basically it just got in the way.

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