Public bug reported: == Comment: #0 - Shilpasri G. Bhat <[email protected]> - 2015-05-06 07:24:11 == The user can see a drop in performance when frequency is throttled and is unaware of throttling. So detect and report such a condition, so the user can check the OCC status to reboot the system or check for power supply or fan failures. The cpu frequency can be throttled by OCC for the following reasons: 1)If a processor crosses its power and temperature limit then OCC will lower its Pmax to reduce the frequency and voltage. 2)If OCC crashes then the system is forced to Psafe frequency. 3)If OCC fails to recover then the kernel is not allowed to do any further frequency changes and the chip will remain in Psafe. This bug is fixed upstream 09a972d1620934142d30cfda455ffe429af751c4
---uname output--- 3.19.0-15 Machine Type = llmtul02b.in.ibm.com Contact Information = Shilpasri G Bhat / [email protected] ** Affects: ubuntu Importance: Undecided Status: New ** Tags: architecture-ppc64le bugnameltc-124690 severity-medium targetmilestone-inin1504 ** Tags added: architecture-ppc64le bugnameltc-124690 severity-medium targetmilestone-inin1504 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1452547 Title: Report cpu frequency throttling To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1452547/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
