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    SubjectRe: [announce] CFS-devel, performance improvements


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

    > > The sched-devel.git tree can be pulled from:
    > >
    > > git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-devel.git
    >
    > Am I the only one who can't clone that thing? [...]

    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

    > [...] It can't be entirely explained with the Kernel Summit, as this
    > is not the first time patches appear out of the blue in form of a git
    > tree.

    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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