Re: 2 CPU Dual Core vs 1 CPU Quad Core

From: Paul Drake <bdbafh_at_gmail.com>
Date: Tue, 8 Nov 2011 14:16:04 -0500
Message-ID: <CAPptggX1K0d7Hc6x_whgG-DN5tCP1=Zib7RjXJYpj2uZdpnc-Q_at_mail.gmail.com>

Jeff,
Perhaps the old server OS had been tuned and the new server OS is using factory defaults?
Are you using Large Memory Pages on the new server? Is the filesystem cache off?
Have you gathered system statistics on the new server - noworkload for starters?

Are the storage configurations different? Perhaps the old server was configured by a member of the BAARF party using dedicated SAS RAID controllers and the new server's storage is sharing an iSCSI SATA RAID6 tray connected by single GigE iSCSI where file, email and backups also reside?

Default firmware versions for the BIOS, RAID and Ethernet controllers could also be to blame.
I've observed increases in throughput (nearly an order of magnitude) over 10 GigE iSCSI after a change in firmware and network drivers.

Paul

On Tue, Nov 8, 2011 at 1:57 PM, Jeff Chirco <JChirco_at_innout.com> wrote:

> I restored from an rman backup to the new server and so far in my initial
> test I am seeing things slower on the new server. But one difference is
> the old server runs Windows 2003 R2 and the new servers is on 2008R2.
> Maybe that is a difference.
>
> Jeff
>
> -----Original Message-----
> From: CRISLER, JON A [mailto:JC1706_at_att.com]
> Sent: Monday, November 07, 2011 3:12 PM
> To: Jeff Chirco; Paul Drake
> Cc: oracle-l_at_freelists.org
> Subject: RE: 2 CPU Dual Core vs 1 CPU Quad Core
>
> Its not just a change from dual-core to quad-core- almost everything in
> the new server is faster, some of it is significantly faster. Overall you
> should be pleased with improved performance.
>
> -----Original Message-----
> From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org]
> On Behalf Of Jeff Chirco
> Sent: Monday, November 07, 2011 4:11 PM
> To: Paul Drake
> Cc: oracle-l_at_freelists.org
> Subject: RE: 2 CPU Dual Core vs 1 CPU Quad Core
>
> All I know is the old server is a Dell PowerEdge 2950 with 32Gb of memory
> and a Clock Frequency of 1333Mhz and the new server is a Dell PowerEdge
> R710 with 48Gb of memory with a Clock Frequency of 6400Mhz. I am not sure
> what all that means though, except for memory.
> From: Paul Drake [mailto:bdbafh_at_gmail.com]
> Sent: Monday, November 07, 2011 12:57 PM
> To: Jeff Chirco
> Subject: Re: 2 CPU Dual Core vs 1 CPU Quad Core
>
> Jeff,
>
> Do you know the processor model number?
> We recently migrated an HP DL585 G2 to a newer Dell Blade where a pair of
> dual cores (running RHEL 4U8 x86-64) was moved to a single socket, quad
> core Intel blade.
> Old server had an on-die memory controller, 16 GB memory in total - likely
> 533 MHz.
> New blade has 48 GB DDR3-1333 MHz memory. I believe that this processsor
> only supports 2 memory controller channels (per socket).
> Processor is Intel Xeon X5667 3.06 GHz quad core.
>
> Paul
>
> On Mon, Nov 7, 2011 at 2:26 PM, Jeff Chirco <JChirco_at_innout.com<mailto:
> JChirco_at_innout.com>> wrote:
> I was wondering if anybody else has any experience in performance testing
> a 2 CPU Dual Core vs 1 CPU Quad Core. We need to swap out one of our
> Windows database servers to a quad core because they are not making the
> dual core anymore. Let me know if you have any information. Thanks in
> advanced.
>
> Jeff
>
>
>
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Received on Tue Nov 08 2011 - 13:16:04 CST