Messages in this thread | | | Date | Mon, 8 Apr 2002 11:16:28 -0400 (EDT) | From | Bill Davidsen <> | Subject | Re: faster boots? |
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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.
Looking at the blinking of my disk light, it *appears* that by tuning bdflush you can get a user selected time between sweeps, and use hdparm to spin down (I assume your laptop doesn't use SCSI!) after a minute or so. Tuning bdflush somewhat relies on using either -aa or mainline VM, perhaps version as well. You should be able to only flush every N minutes with any of them, but the meaning of /sys/vm/bdflush seems somewhat dependent of code behind it. Still, you should be able to get the behaviour you want without making it manditory for everyone.
-- bill davidsen <davidsen@tmr.com> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.
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