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by christianbryant 5144 days ago
What I thought was more interesting (Linus noted "Nothing really exciting happened since -rc7...") was the exchange between Linus and Peter Zijlstra, in particular this Linus eruption:

https://lkml.org/lkml/2012/5/19/97
3 comments
6ren 5144 days ago 

  > And I *do* know that the real world simply isn't simple enough that we could
  > ever do a perfect job, so don't even try - instead aim for "understandable,
  > maintainable, and gets the main issues roughly right".
It's striking that his manner is blunt and over-general... and his technical content is also blunt and over-general. He's known for his pragmatic and effective engineering decisions.
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christianbryant 5144 days ago
Found this article citing Peter on NUMA scheduling in March:

Toward better NUMA scheduling http://lwn.net/Articles/486858/

Peter's cited email: http://lwn.net/Articles/486850/

Actually, in reviewing the data, it seems this issue has been around for a long time, and could be the root of Linus's irritation in the first place. Perhaps he feels no headway is being made for such a long time, even the smallest perceived misstep sets him off.

If nothing else, I would love to actually see some technically detailed papers come out of this that get to the root of the problem, propose solutions to it, and identify what of those solutions are being tested and when they are expected to be implemented. Nothing like a good argument between engineers to get a root cause rooted out and a solution in place.

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ibotty 5144 days ago
not everyone agrees with linus. ingo molnar supported peter zijlstra. with facts. something linus always wants but usually is too busy delivering (ehem..).

"the result of these commits is: 24 files changed, 417 insertions(+), 975 deletions(-)

Most of the linecount win is due to the removal of the dysfunctional power scheduling - but even without that commit it's a simplification:

15 files changed, 415 insertions(+), 481 deletions(-)

while it lifts the historic limitations of the sched-domains approach and makes the code a whole lot more logical."

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thornofmight 5144 days ago
Your link is empty.
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javert 5144 days ago
Works for me.
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