Re: Disk Scheduling
Re: Disk Scheduling
- Subject: Re: Disk Scheduling
- From: Joey Echeverria <email@hidden>
- Date: Tue, 25 Mar 2003 15:06:40 -0500
I'm talking about the low level scheduling of writing logical blocks
out to disk. For example, FIFO, SSTF, LOOK, C-LOOK, etc. The reason
that I'm interested is that we are looking into power efficiency in
operating systems. One thing we wanted to investigate is if there is
any effect to the energy usage when using different algorithms. One
idea that we had was to be able to queue requests for longer in an
operating system buffer and only write to disk when the queue becomes a
certain size. We were thinking that under such a scheme, you could
keep the disk stopped for longer periods of time to save the energy
from keeping it spinning.
Thanks,
Joey Echeverria
Department of Electrical and Computer Engineering
Carnegie Mellon University
On Tuesday, March 25, 2003, at 01:25 PM, Shawn Erickson wrote:
On Monday, March 17, 2003, at 06:35 PM, Joey Echeverria wrote:
I'm working on a project where we are using the Darwin kernel. I
need to look into disk scheduling but was having a hard time
traversing the source. I was hoping that you may be able to point me
in the right direction.
What do you mean by "disk scheduling" in this context?
-Shawn
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