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Re: ls -lR too slow
- From: "Larry Hall (Cygwin)" <reply-to-list-only-lh at cygwin dot com>
- To: cygwin at cygwin dot com
- Date: Thu, 19 Mar 2009 19:32:01 -0400
- Subject: Re: ls -lR too slow
- References: <49C2AFD1.6060000@princeton.edu>
- Reply-to: cygwin at cygwin dot com
On 03/19/2009, Vinod Gupta wrote:
"smbntsec" made a huge difference, a factor of 10x! "ls -lR /cygdrive/z"
still transferred 10 MB, 50x more than "DIR /S Z:" but far better than 400x
it was doing with "nosmbntsec". It improves rsync too which does some thing
similar to "ls -lR" to get file mtime and size etc to filter files. I think
50x factor sounds still too high. I thought the Cygwin overheads were of
the order of 3x or so. Can we squeeze another order of magnitude?
You'd need to find a way to get rsync to not require the similar task that
'-l' performs for 'ls'. But before you spend any effort on that, you might
want to compare 'ls -R /cygdrive/z' and 'DIR /S Z:'. That would be the
"theoretical" limit for Cygwin's speed increase in this situation at this
point. If there's a good gain there, and I would expect a decent one, then
exploring a way to get rsync operation closer to this would be a benefit.
--
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?
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