stderr outputs veerrrryyy slowly

Larry Hall cygwin-lh@cygwin.com
Fri Jun 20 02:17:00 GMT 2003


Brian Dessent wrote:

> Larry Hall wrote:
> 
> 
>>Nope. :-)
>>
>>Works for me fine either way.  Perhaps providing information
>>requested by <http://cygwin.com/problems.html> will shed some light.
>>Perhaps not.
>>
>>You could try it with strace and post the results too.
> 
> 
> Ok, attached should be the cygcheck -srv output.  Also, the strace log
> for running "tidy" on a html file is at
> <http://www.dessent.net/tmp/strace.txt>  It's pretty big, about 17000
> lines.  Of interest are two things:
> 
> Running it under strace fixes the problem (!!) more or less.  The output
> is much faster, although not quite as fast as you would expect for
> console output:
> 
> time strace -o strace.out tidy -o foo test.html
> ...
> real    0m4.640s
> user    0m0.010s
> sys     0m0.020s
> 
> time tidy -o foo test.html
> ...
> real    0m39.301s
> user    0m0.070s
> sys     0m0.020s
> 


OK, I have been able to reproduce this to some extent.  I'm using
'curl -o /dev/null http://www.google.com' which times in at about
1.5 to 2 seconds with 'tty' and about .5 seconds without.  I don't
have any additional data at this point but I thought I'd "chime in"
with a "me too", since I know that's what this list is all about. ;-)
Actually, I wanted to let Brian and any others know that this
doesn't appear to be specific to their configuration.  If I find out
more, I'll report back.


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


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