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    SubjectRe: [PATCH 6/6] sched: disabled rt-bandwidth by default

    * Nick Piggin <> wrote:

    > There is no customer issue and there is no handwaving about
    > compliance;

    well, the reason i'm asking is that i cannot for anything in the world
    imagine you being so upset about _anything_ but something that involves
    benchmark runs ;-)

    And what does SCHED_FIFO RT policy scheduling have to do with
    performance and benchmarks? Nothing usually in the real world, except
    for this little known fact: a common 'tuning' for TPC database
    benchmarks is to run all DB threads as SCHED_FIFO to squeeze the last
    0.1% of performance out of the setup.

    So - and i'm taking an educated guess here - is SCHED_FIFO+TPC
    performance perhaps one of the factors that played a role in you
    initiating this thread? If yes then it's obviously an incredibly broken
    use of SCHED_FIFO and we can add the sysctl tuning to the long list of
    dozens of other tunings that happen before a TPC run anyway.



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