How to minimize the number of writes to CF card?

Christian Weisgerber naddy at
Wed Aug 26 21:00:08 UTC 2015

On 2015-08-25, Matthew Seaman <matthew at> 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.

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

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