From mboxrd@z Thu Jan 1 00:00:00 1970 From: Faye Pearson Subject: Re: C1VN, ACPI and ESD/ASD = const CPU Date: Tue, 27 Aug 2002 15:48:26 +0100 Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Message-ID: <20020827144826.GC32423@clara.net> References: <20020827091844.7af7a982.jcollins@asgardsrealm.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <20020827091844.7af7a982.jcollins-u0TlgVUp4POoiH3BShWgcg@public.gmane.org> Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: To: "Jamin W. Collins" Cc: acpi-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Id: linux-acpi@vger.kernel.org Jamin W. Collins [jcollins-u0TlgVUp4POoiH3BShWgcg@public.gmane.org] wrote: > Has anyone else tried using ACPI with the C1VN or similiar laptops? I've > recently recompiled my kernel, removing APM and enabling ACPI. Most > things seem to work fine (battery status and events). However, when I > start esd or asd to mix audio streams my processor utilization immediately > jumps to ~50% and stays there. The utilization drops to 15-30% if I set > longrun to maximum rather than variable. I've verified the utilization > with both "top" and "gkrellm". However, while top shows that my CPU is > not completely idle, it does not list what is using the CPU. I've tried > sorting by CPU utilization, but there are still large gaps. As shown by > the following: If you stop acpid (if you run it) and cat /proc/acpi/events, do you get a constant stream of events during this high system load? I get a constant stream of Processor 0x80 events if I pass the Passive cooling point on my laptop (Compaq 2701EA) running 2.4.19-020815. This causes the processor to run hotter and therefore continue to stream these events. I need to find what it is which is causing the problem. I had a look at processor and thermal, and when the passive point is reached it does send an acpi event, but if I comment that out, all it does is stop it going to acpi/events, it doesn't stop whatever is spinning and causing the high system load and noone on the list has been able to give me any tips on where to look. I don't remember the problem occurring when I was using 2.4.18-020709 kernel. Perhaps Passive cooling "handling" is new since then? Faye -- Faye Pearson, Software Development Manager, ClaraNET Ltd. Tel 020 7903 3000 Friends may come and go, but enemies accumulate. -- Thomas Jones ------------------------------------------------------- This sf.net email is sponsored by: OSDN - Tired of that same old cell phone? Get a new here for FREE! https://www.inphonic.com/r.asp?r=sourceforge1&refcode1=vs3390