From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4CF811A0017 for ; Mon, 11 May 2015 08:13:47 +1000 (AEST) Message-ID: <1431296015.13039.12.camel@kernel.crashing.org> Subject: Re: G5 Xserve rackmeter broken? From: Benjamin Herrenschmidt To: Aaro Koskinen Date: Mon, 11 May 2015 08:13:35 +1000 In-Reply-To: <20150510183259.GA13777@aspire-one.musicnaut.iki.fi> References: <20150510183259.GA13777@aspire-one.musicnaut.iki.fi> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Cc: linuxppc-dev@lists.ozlabs.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Sun, 2015-05-10 at 21:32 +0300, Aaro Koskinen wrote: > Hi, > > With 4.1-rc2 the rackmeter driver for G5 Xserve is giving bogus > led patterns. So far I have seen at least the following: > > a) With static load the leds seems to be sane and report CPU > usage properly, but after few minutes they go completely OFF, > even if the CPU load remains high. > > b) On a completely idle system, leds alter between all OFF and all ON > roughly once a second. > > Unfortunately I cannot say which was the last kernel where this worked > properly... These servers were away from normal use for a while due > to PSU issues. And mine is dead due to ... PSU issue :-( It could be that what we use to get the "idle time" isn't correct anymore... Ben.