[concurrency-interest] multi-core cpus & java

David Holmes dcholmes at optusnet.com.au
Sun Nov 12 22:57:30 EST 2006


That would depend on the architectural differences between tne multi-core
system and the SMP one. Suppose the memory interface is a bottleneck for a
multi-core chip, then you might get better overall throughput by scaling
back the number of threads.

It all depends on the architecture - and I'm no expert on that.

Cheers,
David
  -----Original Message-----
  From: concurrency-interest-bounces at cs.oswego.edu
[mailto:concurrency-interest-bounces at cs.oswego.edu]On Behalf Of Dhanji R.
Prasanna
  Sent: Monday, 13 November 2006 1:12 PM
  To: dholmes at ieee.org
  Cc: concurrency-interest at cs.oswego.edu
  Subject: Re: [concurrency-interest] multi-core cpus & java




  On 11/13/06, David Holmes <dcholmes at optusnet.com.au> wrote:

    Application tuning on such systems needs to be considered at deploy time
as there is no runtime facility in the VM to determine the nature of the
underlying processors.

  If the nature of the processor is known at deploytime, what might be some
considerations in tuning a multi-threaded app on a jvm? (such as an
appserver)




    Other's may be able to give more specific details.

    David Holmes
      -----Original Message-----
      From: concurrency-interest-bounces at cs.oswego.edu
[mailto:concurrency-interest-bounces at cs.oswego.edu]On Behalf Of Yechiel
Feffer
      Sent: Monday, 13 November 2006 2:22 AM
      To: concurrency-interest at cs.oswego.edu
      Subject: [concurrency-interest] multi-core cpus & java


      Hi

      1. What do an operating-system have to do in order to make a good use
of multi-core ?  Which OS are well-adapted for multi-core ?
      2. What do a Jvm have to do in order to make a good use of multi-core
?  Which Jvms are well-adapted for multi-core ?
      3  What about java applications- ?

      If you have usefull links-that will be great

      Thanks,
      Yechiel Fefer

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