From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-out.m-online.net (mail-out.m-online.net [IPv6:2001:a60:0:32:0:1:25:1]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id F41ACB6FC4 for ; Wed, 25 Apr 2012 20:29:35 +1000 (EST) From: Andreas Schwab To: Benjamin Herrenschmidt Subject: Re: [PATCH 00/15] PowerMac i2c API conversions & windfarm updates References: <1334823416-9138-1-git-send-email-benh__1987.51832726902$1334826600$gmane$org@kernel.crashing.org> <1335343125.21961.33.camel@pasglop> Date: Wed, 25 Apr 2012 12:29:32 +0200 Message-ID: MIME-Version: 1.0 Content-Type: text/plain Cc: khali@linux-fr.org, linuxppc-dev@ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Benjamin Herrenschmidt writes: > Also, does the new driver properly react to load ? The old driver keeps the cpu fans running at 300 rpm (lowest speed?) for much longer when the cpus are put busy. Only when the cpus are back idle it speeds them up to 1200 rpm or more for some time depending on how long the cpus were busy. The new driver is faster at speeding up the fans to around 800 rpm when cpus get busy, and keeps them running longer at that speed, but doesn't appear to select much higher speeds. The old driver appears to be better suited to desktops, whereas the new driver is probably better for servers. But the most annoying sound appears to be coming from the slots fan. Andreas. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5 "And now for something completely different."