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    SubjectRe: Linux 2.6.29


    On Sun, 29 Mar 2009, Alan Cox wrote:
    >
    > Yep and twenty years on software hasn´t improved

    I really think you're gilding the edges of those old memories. The
    software 20 years ago wasn't that great. I'd say it was on the whole a
    whole lot crappier than it is today.

    It's just that we have much higher expectations, and our problem sizes
    have grown a _lot_ faster than rotating disk latencies have improved.
    People didn't worry about having a hundred megs of dirty data and doing an
    'fsync' twenty years ago. Even on big hardware (if you _had_ a hundred
    megs of dirty data you didn't worry about latencies of a few seconds),
    never mind in the Linux world.

    This particular problem really largely boils down to "average memory
    capacity has expanded a _lot_ more than harddisk speeds have gone up".

    Linus
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