Re: 2.6.24 Temperature/speed _not_ normal - no thermal throttling?
On 02/20/2008 01:18 AM, Ron Rechenmacher wrote: Hi, I believe I am having a critical thermal problem. I do not know if it is limited to the 2.6.24.2 kernel which I am running. I do see there has been some discussion about thermal zones and throttling on the list, but I can not tell if it means that thermal throttling is not working in 2.6.24.2 What does /proc/interrupts say about thermal event interrupts? - To unsubscribe from this list: send the line unsubscribe linux-acpi in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: 2.6.24 Temperature/speed _not_ normal - no thermal throttling?
On Wednesday 20 February 2008 01:18, Ron Rechenmacher wrote: my dell d830 laptop seems to over heat and hang. Ron, see Thermal Issues here: http://www.lesswatts.org/projects/acpi/debug.php My guess is that ACPI (and thus Linux) have no control over the fans on this system (as I've never seen a Dell with OS controlled fans) If the fans are spinning fast when you heat up the machine, then they are probably clogged with dust or there a mechanical issue with the thermal solution. cheers, -Len - To unsubscribe from this list: send the line unsubscribe linux-acpi in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: 2.6.24 Temperature/speed _not_ normal - no thermal throttling?
Hi Ron, Throttling is meant as a last line of defense before powering-off machine, and not a thermal regulation feature. Please check if you have cpufreq compiled in and able to change frequency. Please open a bug report at bugzilla.kernel.org against ACPI/Thermal. Please attach dmesg output and 'grep . /proc/acpi/thermal/*/*' Thanks, Alex. Ron Rechenmacher wrote: Hi, I believe I am having a critical thermal problem. I do not know if it is limited to the 2.6.24.2 kernel which I am running. I do see there has been some discussion about thermal zones and throttling on the list, but I can not tell if it means that thermal throttling is not working in 2.6.24.2 When I try to build several kernel source rpms, my dell d830 laptop seems to over heat and hang. It's happened 3 times now and I would like to learn what's going on and not let it happen again. I'm a newbie (and have had problems trying to post :), so I do apologize if I've missing something relatively simple or if this is post is not appropriate in any way. I'm running a Scientific Linux 5 (based on RHEL5) distribution and am just running a cpuspeed user space utility --- and therefor do not believe I have any user space process watching temperature. However, in the earlier kernels, I use to be able to (manually) write to /proc/acpi/processor/CPU0/throttling and see a change when read back, but now the write does not seem to do anything. This might be OK as I 'm thinking the kernel and/or the hardware itself might now suppose to be doing the throttling? Anyway, in 3 windows, I run: win1: stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 180s win2: while sleep 1;do cat /proc/acpi/thermal_zone/THM/temperature;done win3: tail -f /var/log/messages win4; while sleep 1;do cat /proc/acpi/processor/CPU0/throttling;done In win2, I see the temperature go from 50 C to over 86 C. In win3, before, the temp in win2 reaches 70 C, I see kernel: CPU0: Temperature/speed normal (and also CPU1) and kernel: Machine check events logged The temperature would probably just continue to climb if I ran the test for longer that 180 seconds (the kernel rpms take much longer and do not complete before the system hangs :( In /var/log/mcelog, (running mcelog-0.8pre), I only see Processor core below trip temperature. Throttling disabled messages. This is strange because it seems to be being disabling after never being enabled. (Is there a newer mcelog I should be running?) The fan speed does increase, but the throttling state indication never changes (it's always T0: 100%). It seems that when I build the kernel rpms, the increased fan speed is not enough to keep the temperature form running away. It seems that thermal throttling would be required and is not happening. Should I be doing something from user space? Can I do something from user space? Thanks, Ron - To unsubscribe from this list: send the line unsubscribe linux-acpi in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html - To unsubscribe from this list: send the line unsubscribe linux-acpi in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
2.6.24 Temperature/speed _not_ normal - no thermal throttling?
Hi, I believe I am having a critical thermal problem. I do not know if it is limited to the 2.6.24.2 kernel which I am running. I do see there has been some discussion about thermal zones and throttling on the list, but I can not tell if it means that thermal throttling is not working in 2.6.24.2 When I try to build several kernel source rpms, my dell d830 laptop seems to over heat and hang. It's happened 3 times now and I would like to learn what's going on and not let it happen again. I'm a newbie (and have had problems trying to post :), so I do apologize if I've missing something relatively simple or if this is post is not appropriate in any way. I'm running a Scientific Linux 5 (based on RHEL5) distribution and am just running a cpuspeed user space utility --- and therefor do not believe I have any user space process watching temperature. However, in the earlier kernels, I use to be able to (manually) write to /proc/acpi/processor/CPU0/throttling and see a change when read back, but now the write does not seem to do anything. This might be OK as I 'm thinking the kernel and/or the hardware itself might now suppose to be doing the throttling? Anyway, in 3 windows, I run: win1: stress --cpu 8 --io 4 --vm 2 --vm-bytes 128M --timeout 180s win2: while sleep 1;do cat /proc/acpi/thermal_zone/THM/temperature;done win3: tail -f /var/log/messages win4; while sleep 1;do cat /proc/acpi/processor/CPU0/throttling;done In win2, I see the temperature go from 50 C to over 86 C. In win3, before, the temp in win2 reaches 70 C, I see kernel: CPU0: Temperature/speed normal (and also CPU1) and kernel: Machine check events logged The temperature would probably just continue to climb if I ran the test for longer that 180 seconds (the kernel rpms take much longer and do not complete before the system hangs :( In /var/log/mcelog, (running mcelog-0.8pre), I only see Processor core below trip temperature. Throttling disabled messages. This is strange because it seems to be being disabling after never being enabled. (Is there a newer mcelog I should be running?) The fan speed does increase, but the throttling state indication never changes (it's always T0: 100%). It seems that when I build the kernel rpms, the increased fan speed is not enough to keep the temperature form running away. It seems that thermal throttling would be required and is not happening. Should I be doing something from user space? Can I do something from user space? Thanks, Ron - To unsubscribe from this list: send the line unsubscribe linux-acpi in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
