From: Luke Lonergan <llonergan@greenplum.com>
To: Vivek Khera <vivek@khera.org>
To: Pgsql-Performance ((E-mail)) <pgsql-performance@postgresql.org>
Subject: Re: Performances with new Intel Core* processors
Date: Mon, 31 Jul 2006 21:26:57 -0700
Message-ID: <C0F42621.2B69F%llonergan@greenplum.com> (raw)
In-Reply-To: <F691538B-0888-4546-9AFF-63FB1255083A@khera.org>
Vivek,
On 7/31/06 2:04 PM, "Vivek Khera" <vivek@khera.org> wrote:
> No, but it *does* matter how fast said processor can sling the memory
> around, and in my experience, the opterons have been much better at
> that due to the efficiency of the memory transport layer.
My Mac laptop with a Core 1 and DDR2 RAM does 2700 MB/s memory bandwidth.
The Core 2 also has lower memory latency than the Opteron.
That said - Intel still hasn't figured out how to do cache-coherent SMP
scaling yet - the Opteron has the outstanding EV6/HTX bus and the cc-numa
cache coherency logic working today.
- Luke
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To: pgsql-performance@postgresql.org
Cc: llonergan@greenplum.com, vivek@khera.org
Subject: Re: Performances with new Intel Core* processors
In-Reply-To: <C0F42621.2B69F%llonergan@greenplum.com>
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