| From: | Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> |
|---|---|
| To: | Greg Smith <greg(at)2ndquadrant(dot)com> |
| Cc: | Bob Dusek <redusek(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org |
| Subject: | Re: performance config help |
| Date: | 2010-01-11 23:29:29 |
| Message-ID: | dcc563d11001111529m66f6cf7n15e73e2639ab4ef2@mail.gmail.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
On Mon, Jan 11, 2010 at 4:17 PM, Greg Smith <greg(at)2ndquadrant(dot)com> wrote:
> Scott Marlowe wrote:
>>
>> The DDR3 Nehalem and DDR2 AMD are both actually pretty close in real
>> world use on 4 or more socket machines. Most benchmarks on memory
>> bandwidth give no huge advantage to either one or the other. They
>> both max out at about 25GB/s.
>>
>
> The most fair comparison I've seen so far is
> http://www.advancedclustering.com/company-blog/stream-benchmarking.html
> which puts the faster Intel solutions at 37GB/s, while the Opterons bog down
> at 20GB/s. That matches my own tests pretty well too--Intel's got at least
> a 50% lead here in many cases.
But that's with only 2 sockets. I'd like to see something comparing 4
or 8 socket machines. Hmmm, off to googol.
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Pierre Frédéric Caillaud | 2010-01-11 23:53:29 | Re: performance config help |
| Previous Message | Greg Smith | 2010-01-11 23:17:08 | Re: performance config help |