| From: | Greg Smith <greg(at)2ndquadrant(dot)com> |
|---|---|
| To: | Scott Marlowe <scott(dot)marlowe(at)gmail(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 23:17:08 |
| Message-ID: | 4B4BB174.6020608@2ndquadrant.com |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-performance |
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.
--
Greg Smith 2ndQuadrant Baltimore, MD
PostgreSQL Training, Services and Support
greg(at)2ndQuadrant(dot)com www.2ndQuadrant.com
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Scott Marlowe | 2010-01-11 23:29:29 | Re: performance config help |
| Previous Message | Scott Marlowe | 2010-01-11 22:44:18 | Re: performance config help |