Re: Hyperthreading/SMT and NetBSD; how well does it work?

[Andrew Doran <ad%netbsd.org@localhost>]

On Thu, Feb 05, 2009 at 11:34:12AM -0500, Andreas Wrede wrote:

> Looks like HT gets us a 25% reduction in runtime.

Nice! From other reports with P4 chips HT seems to give about a 10% to 15%
boost on builds.

Early on during the development of 5.0 I found HT to be a loss, mainly due
to high lock contention in the kernel. It is good to know that we have fixed
that.

Thanks to everyone who posted results.

Andrew