From: Ivan Voras <ivoras@freebsd.org>
To: pgsql-performance@postgresql.org
Subject: Re: raid10 write performance
Date: Wed, 23 Jun 2010 12:06:56 +0200
Message-ID: <hvsmbq$gok$1@dough.gmane.org> (raw)
In-Reply-To: <4C20CB5F.2030000@2ndquadrant.com>
References: <AANLkTinbKXufTYhNuhNaOW2kWM-simIL3dg0uFX7Ij6g@mail.gmail.com>
<4C20CB5F.2030000@2ndquadrant.com>
On 06/22/10 16:40, Greg Smith wrote:
> Grzegorz Jaśkiewicz wrote:
>> raid: serveRAID M5014 SAS/SATA controller
>>
>
> Do the "performant servers" have a different RAID card? This one has
> terrible performance, and could alone be the source of your issue. The
> ServeRAID cards are slow in general, and certainly slow running RAID10.
What are some good RAID10 cards nowadays?
On the other hand, RAID10 is simple enough that soft-RAID
implementations should be more than adequate - any ideas why a dedicated
card has it "slow"?
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: ivoras@freebsd.org
Subject: Re: raid10 write performance
In-Reply-To: <hvsmbq$gok$1@dough.gmane.org>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox