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.

References:

CPU count vs. CPU clock speed
From: Allen, Brandon

Re: CPU count vs. CPU clock speed

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