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    SubjectRe: faster boots?
    On Mon, 8 Apr 2002, Richard Gooch wrote:

    > Bill Davidsen writes:
    > > On Sun, 7 Apr 2002, Richard Gooch wrote:
    > >
    > >
    > > > But I *want* to write while the drive is spun down. And leave it spun
    > > > down until the system is RAM starved (or some threshold is reached).
    > >
    > > The threshold I hit is how much think time I want to risk. I have
    > > no problem spinning down the drive after inactivity, but the idea of
    > > investing several hours making little changes in a program or
    > > proposal document and then maybe losing them... batteries are just
    > > not that expensive.
    >
    > It's not $$$ I'm concerned about. It's mass.

    The "I" in my posting referred to my personal preference which is safety
    over what to me is a minor inconvenience.

    After looking at disk accesses for a while I *think* diddling bdflush
    parameters will prevent disk writes for quite a while if you don't do
    reads of uncached data. So far I'm just catting /proc/partitions once a
    minute and doing a diff to the previous. looks like a write every ten
    minutes or so, what I set in bdflush, probably of syslog mumbling, since
    the system is relatively quiescent at the moment.

    Does anyone have a thought on power consumption of flash chips? I have a
    20MB compact flash I use as an auxilary backup for critical stuff, "just
    in case" and I bet I could put enough on a 64MB to keep the hard drive
    spun down for hours, if I were interested in doing so.

    --
    bill davidsen <davidsen@tmr.com>
    CTO, TMR Associates, Inc
    Doing interesting things with little computers since 1979.

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