ls -lR too slow

Larry Hall (Cygwin)
Thu Mar 19 16:57:00 GMT 2009

Dave Korn wrote:
> Vinod Gupta wrote:
>> When I do "ls -lR /cygdrive/z" it takes very long.
>> There are only about 700 files on Z: totalling only 100 MB. When I
>> monitor network counters on laptop, I see that a whopping 90 MB were
>> downloaded for a payload (file list) of only 60 KB. Out of curiosity, I
>> did the same experiment between two linux machines configured as NFS
>> client+server. 
>   Perhaps more instructive would be to compare with typing "DIR Z:" in a DOS
> prompt.  How much time does that take, and how much network traffic does it
> generate, by comparison?

If the OP is looking for truer comparisons with Linux, I would say that
using SAMBA on Linux is a better test than NFS.  Of course, Cygwin is
expected to be slower than Linux regardless.

In terms of overall time/traffic with Cygwin, I'd recommend comparing the
results of "DIR Z:" that Dave recommends above to "ls /cygdrive/z" (or
"DIR /S Z:" to "ls -R /cygdrive/z").  If you need to use "-l" with "ls"
and remote SAMBA shares, I'd recommend adding "smbntsec" to your "CYGWIN"
environment variable.  This should limit file accesses that "-l" (and other
flags) can require.  See the link below for more info:


Larry Hall                    
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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