Skip site navigation (1)Skip section navigation (2)
Date:      Fri, 24 Jan 2003 21:06:41 -0800
From:      Peter Wemm <peter@wemm.org>
To:        Marcel Moolenaar <marcel@xcllnt.net>
Cc:        John Baldwin <jhb@FreeBSD.org>, Nate Lawson <nate@root.org>, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org, Attila Nagy <bra@fsn.hu>
Subject:   Re: cvs commit: src/sys/i386/i386 identcpu.c initcpu.c locore.s 
Message-ID:  <20030125050641.3D73F2A89E@canning.wemm.org>
In-Reply-To: <20030125021907.51B482A89E@canning.wemm.org> 

next in thread | previous in thread | raw e-mail | index | archive | help
Peter Wemm wrote:

> The last time I tried this on a non-HTT system, enabling the true halt
> caused a slight slowdown.  But the machine used a lot less power and
> the room was cooler. :-]

Speaking of cooler:

Before:
repoman# sysctl -n hw.cpq.temp
ID     TYPE        LOCATION      STATUS    CURRENT  THRESHOLD
 1  ADM1022      Processor Zone  Nominal   96F/ 36C 156F/ 69C
 2  ADM1022      I/O Zone        Nominal   98F/ 37C 167F/ 75C
 3  ADM1022      CPU (1)         Nominal  114F/ 46C 168F/ 76C
 4  ADM1022      CPU (2)         Nominal  123F/ 51C 168F/ 76C

repoman# sysctl machdep.cpu_idle_hlt=1
machdep.cpu_idle_hlt: 0 -> 1

About 3 minutes later:
repoman# sysctl -n hw.cpq.temp
ID     TYPE        LOCATION      STATUS    CURRENT  THRESHOLD 
 1  ADM1022      Processor Zone  Nominal   84F/ 29C 156F/ 69C 
 2  ADM1022      I/O Zone        Nominal   95F/ 35C 167F/ 75C 
 3  ADM1022      CPU (1)         Nominal   80F/ 27C 168F/ 76C 
 4  ADM1022      CPU (2)         Nominal   89F/ 32C 168F/ 76C 

These are P3's though.  As you can see, that is quite a difference
especially in a 1U box.  (One is an 800MHz, the other is 933MHz)

Cheers,
-Peter
--
Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com
"All of this is for nothing if we don't go to the stars" - JMS/B5


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe cvs-all" in the body of the message




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20030125050641.3D73F2A89E>