Cygwin Performance and stat()

Larry Hall (Cygwin) reply-to-list-only-lh@cygwin.com
Fri Jun 4 16:54:00 GMT 2010


On 6/4/2010 12:37 PM, Christopher Wingert wrote:
> So here is an example of a performance gain by not using cygwin stat().  I
> did this patch in about an hour (with the help of some git code), so I
> wouldn't recommend it for any production use.
>
> On a dry run rsync from my local drive to my NAS (105GB, 34k files, 4k
> directories).  The current release cygwin rsync did it in [36m:43s], with
> the patch (below) applied, it dropped to [04m:48s].

But your patch only does a portion of the work that stat() is supposed to
do.  I don't think there's any question that ignoring the need to fill in
certain stat fields will save time.  But that's not really a workable
alternative either, if that's what you're implying.

-- 
Larry Hall                              http://www.rfk.com
RFK Partners, Inc.                      (508) 893-9779 - RFK Office
216 Dalton Rd.                          (508) 893-9889 - FAX
Holliston, MA 01746

_____________________________________________________________________

A: Yes.
> Q: Are you sure?
>> A: Because it reverses the logical flow of conversation.
>>> Q: Why is top posting annoying in email?

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple



More information about the Cygwin mailing list