[mythtv-users] What is a "dual core processor"?
jthurston at skyline-ats.com
Thu Dec 4 19:00:05 UTC 2008
Sorry for the top-post, I use Outlook :/
Hyperthreading has been described by many as "latency hiding".
I won't go into gory detail of what that means, but the simple answer is
"No." it is nothing close to dual-core. It was/is mostly a gimmick to get
around the poor performance of the early Pentium4 design.
For AV processing, hyperthreading could even hurt your performance.
From: mythtv-users-bounces at mythtv.org
[mailto:mythtv-users-bounces at mythtv.org] On Behalf Of David Brodbeck
Sent: Thursday, December 04, 2008 10:52 AM
To: Discussion about mythtv
Subject: Re: [mythtv-users] What is a "dual core processor"?
Jim Carter wrote:
> Some or all Pentium 4's have hyperthreading, which means that one core can
> hop between two instruction streams.
Has anyone ever found this to be a benefit? Every time I've tested
hyperthreading under real-world workloads, I've found it decreased
performance, so I now turn it off in the BIOS as a matter of course.
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