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    SubjectRe: [PATCH 1/9] Remove parent field in cpuacct cgroup
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    On Fri, 2011-09-23 at 13:39 +0530, Balbir Singh wrote:
    > >> Android makes heavy use of cpuacct as well. We invented it to do cpu
    > >> accounting independent of control
    > >
    > > But its a massive waste of time to have to iterate a double hierarchy,
    > > cache-miss heaven.
    > >
    >
    > By double hierarchy you mean both cpu and cpuacct?

    Yes

    > What if they are not mounted together?

    I was asking if there was a real reason not to have that.

    > > Or so people really have independent cgroups as well? I thought people
    > > just co-mount all this crap.
    > >
    >
    > Please see
    > http://code.google.com/p/cgroupmgr/wiki/cgroupsForAndroid
    > http://stackoverflow.com/questions/6814207/android-cpuacct-usage-file
    >
    > AFAIK, some versions mount cpuacct at /acct and independent of cpu cgroups

    They do now, but can that be fixed? Is there a sane use-case?

    Overhead really must come down of all this crap.


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