Re: 3.0.20 regression testing

On 1/5/13, Fabian Keil <[email protected]> wrote:
> Lee <[email protected]> wrote:
>
>> On 1/4/13, Fabian Keil <[email protected]> wrote:
>> > Lee <[email protected]> wrote:
>> >
>> >> On 1/3/13, Fabian Keil <[email protected]> wrote:
>
>> > On FreeBSD Privoxy-Regression-Test spends most of the time
>> > (IIRC more than 99%) executing curl, so you could try using
>> > a native curl binary which might make a difference.
>>
>> I suspect a native curl binary would be more trouble than it's worth
>> since I'd also need a native perl binary + native whatever else the
>> regression test uses
>
> I always assumed that it would be possible to call native binaries
> from cygwin (but don't remember ever testing it).

It is possible.  It's just been my experience that dealing with the
differences between line endings, forward/backwards slashes, spaces in
file names/directories, etc. quickly gets to the point where it isn't
worth my time trying to make it work correctly.

>> > You could also try profiling Privoxy-Regression-Test yourself first,
>> > but getting Devel::NYTProf running on Windows might not be your idea
>> > of a having a good time.
>>
>> I think the problem is process creation in cygwin.  Try this on your
>> FreeBSD box
>
> I agree that slow process creation is likely the main cause
> of the problem, but my theory was that it would be faster when
> calling native binaries.

The impression I've gotten from the cygwin mailing list is that
process creation is slow - period.  But I've never tried to see if
there was a noticeable difference  between windows & cygwin binaries
so...

$ cat speed.sh
#!/bin/sh
echo "cygwin:"
T=`date +"%S"`
N=0
REPS=0
while [ $REPS -lt 6 ]; do
  if [ "$T" != "`date +"%S"`" ]; then
    printf "Loops: %s, time=%s\n" $N $T
    T=`date +"%S"`
    N=0
    REPS=`expr $REPS + 1`
  fi
  /usr/bin/whoami > /dev/null
  N=`expr $N + 1`
done

echo "windows:"
T=`date +"%S"`
N=0
REPS=0
while [ $REPS -lt 6 ]; do
  if [ "$T" != "`date +"%S"`" ]; then
    printf "Loops: %s, time=%s\n" $N $T
    T=`date +"%S"`
    N=0
    REPS=`expr $REPS + 1`
  fi
  /cygdrive/c/WINDOWS/system32/whoami > /dev/null
  N=`expr $N + 1`
done

$ ./speed.sh
cygwin:
Loops: 12, time=30
Loops: 16, time=31
Loops: 16, time=32
Loops: 16, time=33
Loops: 16, time=34
Loops: 15, time=35
windows:
Loops: 13, time=36
Loops: 13, time=37
Loops: 13, time=38
Loops: 14, time=39
Loops: 13, time=40
Loops: 13, time=41

Assuming the processing requirements for the windows & cygwin versions
of whoami are about the same, slight edge to native cygwin binaries
when using cygwin.

Regards,
Lee

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