someone@notexists.notexists writes in alt.solaris.x86:
|Have anyone tryed Intel HyperThreading with Solaris X86.
|Any benefits ????
|Or does it work at all ??
It should work, but depending on your workload it may increase or
decrease performance. It's more likely to help on multi-threaded,
highly parallelized workloads, and may reduce performance on
single-threaded workloads, since the other "virtual CPU" will be busy
running the kernel idle thread and using resources that could otherwise
be used by the main CPU. The latest Solaris Express release changes the
idle thread to no longer do this, so it should run better in the
single-thread case. (No, I don't know if or when this will be
backported to older releases.) As both SPARC & x86 CPU's are making
increasing use of this, there is much work going on for future releases
of Solaris to improve support and performance for on-chip
multi-processing/multi-threading.
--
__________________________________________________ ______________________
Alan Coopersmith
alanc@alum.calberkeley.org http://www.CSUA.Berkeley.EDU/~alanc/ aka:
Alan.Coopersmith@Sun.COM Working for, but definitely not speaking for, Sun Microsystems, Inc.
