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    SubjectRE: Default cache_hot_time value back to 10ms
    Date
    Andrew Morton wrote on Tuesday, October 05, 2004 9:51 PM
    > > Nick Piggin <nickpiggin@yahoo.com.au> wrote:
    > > I'd say it is probably too low level to be a useful tunable (although
    > > for testing I guess so... but then you could have *lots* of parameters
    > > tunable).
    >
    > This tunable caused an 11% performance difference in (I assume) TPCx.
    > That's a big deal, and people will want to diddle it.
    >
    > If one number works optimally for all machines and workloads then fine.
    >
    > But yes, avoiding a tunable would be nice, but we need a tunable to work
    > out whether we can avoid making it tunable ;)
    >
    > Not that I'm soliciting patches or anything. I'll duck this one for now.

    Andrew, can I safely interpret this response as you are OK with having
    cache_hot_time set to 10 ms for now? And you will merge this change for
    2.6.9? I think Ingo and Nick are both OK with that change as well. Thanks.

    - Ken


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