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Re: [announce] CFS-devel, performance improvements

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To: Roman Zippel <zippel@...>
Cc: <linux-kernel@...>, Peter Zijlstra <a.p.zijlstra@...>, Mike Galbraith <efault@...>
Date: Thursday, September 13, 2007 - 5:19 am

* Roman Zippel <zippel@linux-m68k.org> wrote:


Ah - i have messed up my sched-devel.git script so the git-push went to 
kernel.org but into my home directory :-/ Should work now - let me know 
if it doesnt.

i've also uploaded the patch series in quilt format, to:

  http://people.redhat.com/mingo/cfs-scheduler/devel/patches.tar.gz


i'm not sure what you mean, but i can definitely tell you that there was 
no scheduler hacking at the Kernel Summit. (there's no good wireless in 
the pubs and not enough space for a laptop anyway ;)

The impressive linecount has been mostly achieved by dumb removal:

    sched: remove wait_runtime fields and features
    4 files changed, 14 insertions(+), 161 deletions(-)

    sched: remove wait_runtime limit
    5 files changed, 3 insertions(+), 124 deletions(-)

    sched: remove precise CPU load calculations #2
    1 file changed, 1 insertion(+), 31 deletions(-)

    sched: remove precise CPU load
    3 files changed, 9 insertions(+), 41 deletions(-)

    sched: remove stat_gran
    4 files changed, 15 insertions(+), 50 deletions(-)

Hack time to do them: ~10 minutes apiece. Removing stuff is _easy_ :-)

The rest is finegrained, small changes. One of the harder patches was 
this one:

    commit 28c4b8ed35f0fc7050f186147da9e10b55e1e446
    sched: introduce se->vruntime
    3 files changed, 50 insertions(+), 33 deletions(-)

And i sent you the first variant of that already:

    http://lkml.org/lkml/2007/9/2/76

we needed 2 days after the KS to put it into shape and send it out for 
feedback.

	Ingo
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Messages in current thread:
[announce] CFS-devel, performance improvements, Ingo Molnar, (Tue Sep 11, 4:04 pm)
Re: [announce] CFS-devel, performance improvements, Roman Zippel, (Wed Sep 12, 6:17 pm)
Re: [announce] CFS-devel, performance improvements, Willy Tarreau, (Thu Sep 13, 7:08 pm)
Re: [announce] CFS-devel, performance improvements, Roman Zippel, (Fri Sep 14, 9:10 am)
Re: [announce] CFS-devel, performance improvements, Willy Tarreau, (Fri Sep 14, 1:54 pm)
Re: [announce] CFS-devel, performance improvements, Ingo Molnar, (Thu Sep 13, 8:47 am)
Re: [announce] CFS-devel, performance improvements, Roman Zippel, (Fri Sep 14, 7:46 am)
Re: [announce] CFS-devel, performance improvements, Peter Zijlstra, (Thu Sep 13, 7:35 am)
Re: [announce] CFS-devel, performance improvements, Roman Zippel, (Thu Sep 13, 8:14 am)
Re: [announce] CFS-devel, performance improvements, Peter Zijlstra, (Thu Sep 13, 8:44 am)
Re: [announce] CFS-devel, performance improvements, Peter Zijlstra, (Fri Sep 14, 7:16 am)
Re: [announce] CFS-devel, performance improvements, Ingo Molnar, (Thu Sep 13, 5:19 am)
Re: [announce] CFS-devel, performance improvements, debian developer, (Thu Sep 13, 3:34 am)
Re: [announce] CFS-devel, performance improvements, debian developer, (Thu Sep 13, 3:17 am)
Re: [announce] CFS-devel, performance improvements, Mike Galbraith, (Wed Sep 12, 2:20 am)
Re: [announce] CFS-devel, performance improvements, Rob Hussey, (Tue Sep 11, 9:16 pm)
Re: [announce] CFS-devel, performance improvements, Rob Hussey, (Thu Sep 13, 4:42 am)
Re: [announce] CFS-devel, performance improvements, Ingo Molnar, (Thu Sep 13, 5:06 am)
Re: [announce] CFS-devel, performance improvements, Rob Hussey, (Thu Sep 13, 5:24 am)
Re: [announce] CFS-devel, performance improvements, Ingo Molnar, (Thu Sep 13, 5:31 am)
Re: [announce] CFS-devel, performance improvements, Rob Hussey, (Thu Sep 13, 5:36 am)
Re: [announce] CFS-devel, performance improvements, Ingo Molnar, (Thu Sep 13, 7:48 am)
Re: [announce] CFS-devel, performance improvements, Rob Hussey, (Thu Sep 13, 9:47 pm)
Re: [announce] CFS-devel, performance improvements, Kyle Moffett, (Fri Sep 14, 2:59 am)
Re: [announce] CFS-devel, performance improvements, Rob Hussey, (Thu Sep 13, 10:26 pm)
Re: [announce] CFS-devel, performance improvements, Rob Hussey, (Thu Sep 13, 5:43 am)
Re: [announce] CFS-devel, performance improvements, Rob Hussey, (Thu Sep 13, 6:17 am)
Re: [announce] CFS-devel, performance improvements, Roman Zippel, (Tue Sep 11, 8:42 pm)
Re: [announce] CFS-devel, performance improvements, Ingo Molnar, (Thu Sep 13, 3:52 am)
Re: [announce] CFS-devel, performance improvements, Roman Zippel, (Thu Sep 13, 8:35 am)
Re: [announce] CFS-devel, performance improvements, Sam Ravnborg, (Thu Sep 13, 3:01 pm)
Re: [announce] CFS-devel, performance improvements, Roman Zippel, (Fri Sep 14, 8:26 am)
Re: [announce] CFS-devel, performance improvements, Ingo Molnar, (Thu Sep 13, 10:28 am)
Re: [announce] CFS-devel, performance improvements, Roman Zippel, (Thu Sep 13, 12:50 pm)
Re: [announce] CFS-devel, performance improvements, Arjan van de Ven, (Fri Sep 14, 11:26 am)
Re: [announce] CFS-devel, performance improvements, Roman Zippel, (Fri Sep 14, 10:50 am)
Re: [announce] CFS-devel, performance improvements, Arjan van de Ven, (Fri Sep 14, 11:56 am)
Re: [announce] CFS-devel, performance improvements, Roman Zippel, (Fri Sep 14, 11:13 am)
Re: [announce] CFS-devel, performance improvements, Kyle Moffett, (Thu Sep 13, 2:28 pm)
Re: [announce] CFS-devel, performance improvements, Peter Zijlstra, (Thu Sep 13, 3:08 pm)
Re: [announce] CFS-devel, performance improvements, Peter Zijlstra, (Thu Sep 13, 1:06 pm)
Re: [announce] CFS-devel, performance improvements, Roman Zippel, (Fri Sep 14, 8:04 am)
Re: [announce] CFS-devel, performance improvements, Peter Zijlstra, (Fri Sep 14, 8:17 am)
Re: [announce] CFS-devel, performance improvements, Peter Zijlstra, (Thu Sep 13, 1:09 pm)
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