From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: speedfreq: epia + longhaul + speedfreq + copying large files = freeze Date: Wed, 22 Dec 2004 11:02:39 -0800 Message-ID: <1103742159.16413.24.camel@localhost> References: <41C83AA7.6010204@gmx.net> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <41C83AA7.6010204@gmx.net> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: cpufreq-bounces@www.linux.org.uk Errors-To: cpufreq-bounces+glkc-cpufreq=gmane.org@www.linux.org.uk Content-Type: text/plain; charset="us-ascii" To: Sebastian Cc: cpufreq list On Tue, 2004-12-21 at 16:00 +0100, Sebastian wrote: > Dear Jeremy, > > thanks for your tool! I like it best of all cpufreq daemons, Thanks! This problem sounds like a bug in the longhaul driver though, which I don't really know anything about. (The system should never crash, regardless of what speedfreqd does.) I've cc:d the cpufreq list to see if someone there can help. Dave? J > Anyway, the Epia board normally runs fine with speedfreq. Frequency gets > adjusted between 400Mhz and 600MHz. But when I start cutting > advertisements out of the DVB recordings with the VDR software (Video > Disk Recorder from Klaus Schmiedinger, www.cadsoft.de/vdr) after a short > while it freezes. The cutting process is simply like copying large > files from one folder to another folder on the same partition. Mostly > 1.7 to 2.7GB. I tried the following: > > 1. Cutting a recording, cpufreq enabled, speedfreq daemon running: > > System freeze. > > 2. Copying large files manually, cpufreq enabled, speedfreq daemon running: > > System freeze. > > 3. Cutting a recording, cpufreq enabled, speedfreq daemon disabled: > > Works. > > 4. Copying large files manually, cpufreq enabled, speedfreq daemon disabled: > > Works. > > I'd like to add that sometimes I get messages in syslog telling me that > speedfreq thought the actual frequency was xxx and discovered that the > real frequency was something else. Once that was the last thing in > syslog before a freeze. I don't know if this is relevant, because 99% of > the freezes the syslog stays like it is, nothing gets added. > > The kernel is a vanilla 2.6.9. The Linux Distribution is Gentoo stable. > Flags are "-O2 -march=c3 -fomit-frame-pointer -mmmx -m3dnow -pipe". I > have no 4k stacks, no preemption, no nptl, no perl ithreads. > > Maybe speedfreq changing frequencies too fast for the little Epia is the > reason for the freezes? What can I do?