Re: 2.6.12 Performance problems

From: Sven-Thorsten Dietrich (sven_at_mvista.com)
Date: 08/23/05

  • Next message: Adam Litke: "[Hugetlb x86] Small hugetlb arch updates for i386 and x86_64" 
    To: danial_thom@yahoo.com
Date:	Tue, 23 Aug 2005 11:02:13 -0700

    On Tue, 2005-08-23 at 10:10 -0700, Danial Thom wrote:
    >

    > > >Ok, well you'll have to explain this one:
    > > >
    > > >"Low latency comes at the cost of decreased
    > > >throughput - can't have both"
    > > >
    > > >
    > > Configuring "preempt" gives lower latency,
    > > because then
    > > almost anything can be interrupted (preempted).
    > > You can then
    > > get very quick responses to some things, i.e.
    > > interrupts and such.
    >
    > I think part of the problem is the continued
    > misuse of the word "latency". Latency, in
    > language terms, means "unexplained delay".

    latency

    n
    1: (computer science) the time it takes for a specific block of data on
    a data track to rotate around to the read/write head [syn: rotational
    latency]
    2: the time that elapses between a stimulus and the response to it [syn:
    reaction time, response time, latent period]
    3: the state of being not yet evident or active

    No apparent references to "unexplained" in association with the word
    latency.

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