i386/135447: [i386] [request] Intel Core i7 and Nehalem-EP new features not supported

[Dmitry Kubov]

The following reply was made to PR i386/135447; it has been noted by GNATS.

From: Dmitry Kubov <dk at garant.ru>
To: Alexander Motin <mav at FreeBSD.org>
Cc: Andriy Gapon <avg at FreeBSD.org>, jh at FreeBSD.org,
        bug-followup <bug-followup at FreeBSD.org>
Subject: Re: i386/135447: [i386] [request] Intel Core i7 and Nehalem-EP new
 features not supported
Date: Fri, 24 Sep 2010 11:34:51 +0400

 > Dmitry Kubov wrote:
 >> Is it possible to stick running threads to same CPU core for longer time
 >> to avoid C-states latencies penalty?
 > man 1 cpuset
 >
 Its static assignment, requires scheduling all tasks by hand.
 
 cpuset -l 7 ubench -cs
 Ubench Single CPU:   453051 (0.40s)
 less than 1% boost.