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    SubjectRe: [PATCH RT 00/02] SLOB optimizations
    Hi Ingo,

    Steven Rostedt <rostedt@goodmis.org> wrote:
    > > [...] Today's slab system is starting to become like the IDE where
    > > nobody, but a select few sado-masochis, dare to venture in. (I've CC'd
    > > them ;) [...]

    On Wed, 21 Dec 2005, Ingo Molnar wrote:
    > while it could possibly be cleaned up a bit, it's one of the
    > best-optimized subsystems Linux has. Most of the "unnecessary
    > complexity" in SLAB is related to a performance or a debugging feature.
    > Many times i have looked at the SLAB code in a disassembler, right next
    > to profile output from some hot workload, and have concluded: 'I couldnt
    > do this any better even with hand-coded assembly'.
    >
    > SLAB-bashing has become somewhat fashionable, but i really challenge
    > everyone to improve the SLAB code first (to make it more modular, easier
    > to read, etc.), before suggesting replacements.

    I dropped working on the replacement because I wanted to do just that. I
    sent my patch only because Matt and Steve talked about writing a
    replacement and thought they would be interested to see it.

    I am all for gradual improvements but after taking a stab at it, I
    starting to think rewriting would be easier, simply because the slab
    allocator has been clean-up resistant for so long.

    Pekka
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