From: | Christian Elmerot <ce(at)one(dot)com> |
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To: | pgsql-performance(at)postgresql(dot)org |
Subject: | CPUs for new databases |
Date: | 2010-10-26 12:55:06 |
Message-ID: | 4CC6CFAA.10107@one.com |
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Lists: | pgsql-performance |
Hello,
What is the general view of performance CPU's nowadays when it comes to
PostgreSQL performance? Which CPU is the better choice, in regards to
RAM access-times, stream speed, cache synchronization etc. Which is the
better CPU given the limitation of using AMD64 (x86-64)?
We're getting ready to replace our (now) aging db servers with some
brand new with higher core count. The old ones are 4-socket dual-core
Opteron 8218's with 48GB RAM. Right now the disk-subsystem is not the
limiting factor so we're aiming for higher core-count and as well as
faster and more RAM. We're also moving into the territory of version 9.0
with streaming replication to be able to offload at least a part of the
read-only queries to the slave database. The connection count on the
database usually lies in the region of ~2500 connections and the
database is small enough that it can be kept entirely in RAM (dump is
about 2,5GB).
Regards,
Christian Elmerot
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