How to minimize the number of writes to CF card?
Christian Weisgerber
naddy at mips.inka.de
Wed Aug 26 21:00:08 UTC 2015
On 2015-08-25, Matthew Seaman <matthew at FreeBSD.org> wrote:
> However, I don't think softupdates has much effect on the /number/ or
> writes made to the filesystem. It's all about re-ordering writes to
> ensure metadata consistency.
Time to re-read Kirk's original paper.
http://www.usenix.org/publications/library/proceedings/usenix99/full_papers/mckusick/mckusick.pdf
See section 5. Choice quote:
"Overall, 4.4BSD systems tend to require 40 percent fewer disk
writes and complete tasks 25 percent more quickly than when using
the default 4.4BSD fast filesystem implementation."
--
Christian "naddy" Weisgerber naddy at mips.inka.de
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