OK, I've spent the last 3 hours verifying this manually on 3 different machines that trigger this issue.
Without 1.4.3-5~14.04.3, I see: [72761.740827] powercap intel-rapl:0: package locked by BIOS, monitoring only [73066.277771] powercap intel-rapl:0: package locked by BIOS, monitoring only [73070.281923] powercap intel-rapl:0: package locked by BIOS, monitoring only [73074.285950] powercap intel-rapl:0: package locked by BIOS, monitoring only [73078.290045] powercap intel-rapl:0: package locked by BIOS, monitoring only [73082.294180] powercap intel-rapl:0: package locked by BIOS, monitoring only [73086.278074] powercap intel-rapl:0: package locked by BIOS, monitoring only [73090.282163] powercap intel-rapl:0: package locked by BIOS, monitoring only [73090.302293] powercap intel-rapl:0: package locked by BIOS, monitoring only [73098.310360] powercap intel-rapl:0: package locked by BIOS, monitoring only That is, every 4-8 seconds and update. I then installed thermald from -proposed, (1.4.3-5~14.04.3) and it restarted, and one only gets the initial message once and after that it does not occur. This is the expected behaviour, so on my 3 machines it's working fine. I also verified this by running it not as a service but in non-daemon mode: sudo dmesg -c sudo thermald --no-daemon --loglevel=info then I loaded the machine with stress-ng --cpu 0 and waiting for it to heat up a while. The kernel logs the following messages: [73484.272942] powercap intel-rapl:0: package locked by BIOS, monitoring only [73516.305392] intel_powerclamp: Start idle injection to reduce power [73520.325616] intel_powerclamp: Stop forced idle injection [73524.449552] intel_powerclamp: Start idle injection to reduce power [73528.465760] intel_powerclamp: Stop forced idle injection [73532.590030] intel_powerclamp: Start idle injection to reduce power And the thermald is logging: sysfs write failed constraint_0_power_limit_uw Set : threshold:87000, temperature:89000, cdev:6(rapl_controller), curr_state:26250000, max_state:26250000 Set : threshold:87000, temperature:92000, cdev:7(intel_pstate), curr_state:1, max_state:10 cdev index:7 consecutive call, increment exponentially state 3 turbo disabled Set : threshold:87000, temperature:87000, cdev:7(intel_pstate), curr_state:3, max_state:10 turbo enabled Set : threshold:87000, temperature:86000, cdev:7(intel_pstate), curr_state:2, max_state:10 turbo disabled Set : threshold:87000, temperature:89000, cdev:7(intel_pstate), curr_state:3, max_state:10 cdev index:7 consecutive call, increment exponentially state 5 Set : threshold:87000, temperature:89000, cdev:7(intel_pstate), curr_state:5, max_state:10 cdev index:7 consecutive call, increment exponentially state 7 Set : threshold:87000, temperature:93000, cdev:7(intel_pstate), curr_state:7, max_state:10 update_pid 1461351021 1461351021 500 250 92250 Read set point 93500 cdev index:7 consecutive call, increment exponentially state 11 Set : threshold:87000, temperature:92000, cdev:7(intel_pstate), curr_state:10, max_state:10 Set : threshold:87000, temperature:92000, cdev:5(intel_powerclamp), curr_state:5, max_state:50 Set : threshold:87000, temperature:85000, cdev:5(intel_powerclamp), curr_state:0, max_state:50 Set : threshold:87000, temperature:90000, cdev:5(intel_powerclamp), curr_state:5, max_state:50 Set : threshold:87000, temperature:82000, cdev:5(intel_powerclamp), curr_state:0, max_state:50 Set : threshold:87000, temperature:89000, cdev:5(intel_powerclamp), curr_state:5, max_state:50 cdev index:5 consecutive call, increment exponentially state 15 Set : threshold:87000, temperature:89000, cdev:5(intel_powerclamp), curr_state:15, max_state:50 Set : threshold:87000, temperature:81000, cdev:5(intel_powerclamp), curr_state:10, max_state:50 Set : threshold:87000, temperature:83000, cdev:5(intel_powerclamp), curr_state:5, max_state:50 Set : threshold:87000, temperature:89000, cdev:5(intel_powerclamp), curr_state:10, max_state:50 Set : threshold:87000, temperature:86000, cdev:5(intel_powerclamp), curr_state:5, max_state:50 Set : threshold:87000, temperature:86000, cdev:5(intel_powerclamp), curr_state:0, max_state:50 So one can see that thermald is detecting a rapl write failure "sysfs write failed constraint_0_power_limit_uw" and the rapl controller is no longer used (as the code is expected to do). So from my exhaustive testing I believe the code is correct. ** Tags removed: verification-failed ** Tags added: verification-done -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1543046 Title: thermald spamming kernel log when updating powercap RAPL powerlimit To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/thermald/+bug/1543046/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
