From: Ernst Einstein <Crusader@gmx.ch>
To: Luke Lonergan <llonergan@greenplum.com>
Cc: Dan Harris <fbsd@drivefaster.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: Poor performance on HP Package Cluster
Date: Sun, 04 Sep 2005 17:47:55 +0200
Message-ID: <1125848875.6873.10.camel@Dellerium.party.net> (raw)
In-Reply-To: <BF3D291A.ED00%llonergan@greenplum.com>
References: <BF3D291A.ED00%llonergan@greenplum.com>
Hi !
Sorry, for my late answer. I was unavailable for a few days...
Yes, I'm using the build-in HP Smart Array Controller. Both, the
internal disks, and the external storrage are using the controller.
Can you send me your test results? I'm interested in it.
I've done some testing now. I've imported the data again and tuned the
DB like I was told in some performance howtos. Now, the database has a
good performance - until it has to read from the disks.
Greetings Ernst
Am Donnerstag, den 01.09.2005, 21:54 -0700 schrieb Luke Lonergan:
> Dan,
>
> On 9/1/05 4:02 PM, "Dan Harris" <fbsd@drivefaster.net> wrote:
>
> > Do you have any sources for that information? I am running dual
> > SmartArray 6402's in my DL585 and haven't noticed anything poor about
> > their performance.
>
> I've previously posted comprehensive results using the 5i and 6xxx series
> smart arrays using software RAID, HW RAID on 3 different kernels, alongside
> LSI and Adaptec SCSI controllers, and an Adaptec 24xx HW RAID adapter.
> Results with bonnie++ and simple sequential read/write with dd.
>
> I'll post them again here for reference in the next message. Yes, the
> performance of the SmartArray controllers under Linux was abysmal, even when
> run by the labs at HP.
>
> - Luke
>
>
>
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--
Ernst Einstein <Crusader@gmx.ch>
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To: pgsql-performance@postgresql.org
Cc: Crusader@gmx.ch, llonergan@greenplum.com, fbsd@drivefaster.net
Subject: Re: Poor performance on HP Package Cluster
In-Reply-To: <1125848875.6873.10.camel@Dellerium.party.net>
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