ubuntu-x-swat team mailing list archive

[Peter Sasi <524281@xxxxxxxxxxxxxxxxxx>]

This bug I suppose is the root cause of the second power consumption regression found here:
http://www.phoronix.com/scan.php?page=article&item=linux_kernel_regress2

Basically power usage looks like:
- 2.6.24-2.6.34: average of all tests ~21-22W
- 2.6.35-2.6.37: average of all tests ~25W
- 2.6.38-2.6.39: average of all tests ~26W

This translates into laptop operation times under test workload:
mAh	V	W	mA	h

6600    10,8    21      1944,44 3,39

6600    10,8    22      2037,04 3,24

6600    10,8    25      2314,81 2,85

6600    10,8    26      2407,41 2,74

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https://bugs.launchpad.net/bugs/524281

Title:
  Tens of wakes per second in "[kernel scheduler] Load balancing tick"
  on Core 2 Duo even with only 1 core enabled