From owner-freebsd-questions@FreeBSD.ORG Mon Dec 8 18:37:09 2008 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8EC021065672 for ; Mon, 8 Dec 2008 18:37:09 +0000 (UTC) (envelope-from glavoie@gmail.com) Received: from rv-out-0506.google.com (rv-out-0506.google.com [209.85.198.225]) by mx1.freebsd.org (Postfix) with ESMTP id 635D28FC1B for ; Mon, 8 Dec 2008 18:37:09 +0000 (UTC) (envelope-from glavoie@gmail.com) Received: by rv-out-0506.google.com with SMTP id b25so1283534rvf.43 for ; Mon, 08 Dec 2008 10:37:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:message-id:date:from:to :subject:mime-version:content-type; bh=wjDkPb+rnP+p4YiPxkPa+qhvILJ421g/i1VyU19/nyw=; b=XK7DbiuEy1yTDoJe4L6k0trt3jTunb6noWqn3uAPyQC9QwrD+XGWM2lezmL87i88/w o1I9oPEZ7iGgjWRmmVTXtHPgttQ+hHlJsqJP6zqdYDO+TPPA8D+Hx6uDCKzxeM2JWUS7 22QMD+aqUiYOHwBuPiC4FT4MrVwitZeyoC9Fs= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:mime-version:content-type; b=IBGzriLK2OCcDEYDr9dhlebeSjLlyXtMHjQiNunBIrWE6CzCJPSAiRLViURTzpSBqu AG3drOjhjsVvy9CFjmd8amD4nUaYFzG8jW8ITGtPS/Errp3svOyX5JhrM/aGrkZEVRWT NQQbgtkdQooimgrfbtGqPIzaMYu74XgCxRnSY= Received: by 10.140.133.9 with SMTP id g9mr879230rvd.7.1228761429061; Mon, 08 Dec 2008 10:37:09 -0800 (PST) Received: by 10.141.168.6 with HTTP; Mon, 8 Dec 2008 10:37:09 -0800 (PST) Message-ID: Date: Mon, 8 Dec 2008 13:37:09 -0500 From: "Gabriel Lavoie" To: freebsd-questions@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: Intel Pentium Dual Core E5200 and Enhanced Speedstep X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Dec 2008 18:37:09 -0000 Hello, I have a small problem/question about my Pentium Dual Core E5200. I have this system running as a server since 1 month and I just noticed that the CPU frequency may not be running at the highest speed. With my other computer that has a Core 2 Duo, I noticed that under Windows and Linux, the CPU frequency steps down at 2 GHz when the CPU is idle and increases at 2.66 GHz when the CPU is under load. With this FreeBSD Pentium Dual Core, I just noticed using sysctl that the frequency after booting the system is at 1.25 GHz and it doesn't go up automatically at 2.5 GHz under load. dev.cpu.0.freq: 1254 dev.cpu.0.freq_levels: 2508/-1 2194/-1 1881/-1 1567/-1 1254/-1 940/-1 627/-1 313/-1 If I do "sysctl dev.cpu.0.freq=2508", the frequency gets changed: [root@headless /home/wildchild]# sysctl dev.cpu.0.freq=2508 dev.cpu.0.freq: 1254 -> 2508 [root@headless /home/wildchild]# sysctl -a | grep cpu.0.freq dev.cpu.0.freq: 2508 dev.cpu.0.freq_levels: 2508/-1 2194/-1 1881/-1 1567/-1 1254/-1 940/-1 627/-1 313/-1 Why isn't the frequency isn't increased automatically under load? And why is it at 1.254 GHz after boot and not at the maximum frequency? Another thing I noticed with "dmesg" is the following error (CPU supports Enhanced Speedstep, but is not recognized.): cpu0: on acpi0 ACPI Warning (tbutils-0243): Incorrect checksum in table [OEMB] - D, should be 8 [20070320] est0: on cpu0 est: CPU supports Enhanced Speedstep, but is not recognized. est: cpu_vendor GenuineIntel, msr 61a4c2006004c20 device_attach: est0 attach returned 6 p4tcc0: on cpu0 cpu1: on acpi0 est1: on cpu1 est: CPU supports Enhanced Speedstep, but is not recognized. est: cpu_vendor GenuineIntel, msr 61a4c2006004c20 device_attach: est1 attach returned 6 Why do I get this error? I found this problem with my machine after I looked at an article telling that the new 45nm Intel CPUs were idling at around 3-4W when Speedstep is decreasing their frequency. And I guess it means that I've been running my server at 1.25 GHz all the time since I installed it, which would explain why some compiling jobs were slow! Thanks Gabriel -- Gabriel Lavoie glavoie@gmail.com