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On Mon, May 30, 2005 at 08:00:35PM -0400, Tacvek wrote: >>Interesting, why is it faster when running a binary that doesn't depend >>on cygwin1.dll after swapping the DLL? Some Win caching mechanism? > >Repeating many times should minimize any caching: > >#New DLL >$ /bin/time -f "%E %S %U" cygspd-mingw-ne-o7 cygspd.dat >0:04.48 0.01 0.02 >0:01.40 0.00 0.02 >0:01.46 0.01 0.01 >0:01.39 0.01 0.01 >0:01.43 0.01 0.01 >#old DLL >$ /bin/time -f "%E %S %U" cygspd-mingw-ne-o7 cygspd.dat >0:01.45 0.01 0.01 >0:01.41 0.00 0.01 >0:01.40 0.01 0.01 >0:01.41 0.00 0.02 >0:01.41 0.00 0.02 >0:01.43 0.01 0.01 > > >Ok there is obviously some caching, which means that the original values I >gave inidacte that the improvement is somewhat less than they indicate. >They did not indicate very spectacular performance anyway. But fractional >seconds do not mean much. >Based on some additioal experimentation, you should assume that the values >are acurate to +/- 1 second. There is no reason to expect any improvement in mingw programs from my change. cgf -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
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