Re: CPU count vs. CPU clock speed
- From: Tanel Põder <tanel.poder.003@xxxxxxx>
- To: <Brandon.Allen@xxxxxxxxxxx>, "ORACLE-L" <oracle-l@xxxxxxxxxxxxx>
- Date: Thu, 19 Jan 2006 17:47:59 -0600
Very roughly:
Few long-running CPU bound jobs benefit from smaller number of faster CPUs.
Many interactive (waiting often on IO) jobs benefit from larger number of CPUs
even if they're slower.
Cary&Jeff's book describes this stuff thoroughly.
Tanel.
----- Original Message -----
From: Allen, Brandon
To: oracle-l@xxxxxxxxxxxxx
Sent: Thursday, January 19, 2006 5:19 PM
Subject: CPU count vs. CPU clock speed
We've gone through a few hardware refreshes lately and the vendors seem to be
encouraging consolidation on less CPUs since the new ones are so much faster
than the old ones, but I am skeptical of the reasoning behind this. What is
better (just for example) - 10 CPUs at 1GHz each, or 5 CPUs at 2GHz? Of course
for the purpose of discussion we have to assume all other system components are
identical, and since this is an Oracle list, let's assume we are running Oracle
on the server.
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