Re: ldom question

On 10/04/2015 17:16, Ben Taylor wrote:
> I think the T-4 chipset is a 2.8Ghz clock, 8 threads/core, 1 FP per
> core, up to 4 sockets per box.  This CPU has a dynamic CPU scheuderl.
> We have a pair and are running IO Domain LDOMs for Databases.  For one
> of our databases, with the primary running the LDOM 2.0 (Oracle OVM), we
> have the threading model set to max-ipc, which allows us to collasce the
> cores so they appear a 8 straight line cpus, instead of 64 vCPUs.  The
> other database uses the normal database "max-throughput" threading
> model.  A thread is about a 700-900Mhz CPU.  In max-ipc, we see 2.8Ghz
> cores reported.
>
> The T-5 chipset is a 3.4 or 3.6Ghz cores, 16 threads/core, dynamic CPU
> model.  In LDOM 3.0, Oracle took away the ability to change the
> threading model so I don't think a  T5 can be forced to the max-ipc
> model anymore.
>
> Hope that explains why a 10 year old computer doesn't have very good
> performance. ;-)
>
> Regards,
>
> Ben

Thanks for the information. You're sending mail from 2020, though? Mind 
sending a few lottery numbers? :)