From octave-maintainers-request at bevo dot che dot wisc dot edu Sun Mar 28 12:41:17 2004
Subject: Re: [Fwd: [Bug c++/14563] octave built under Cygwin very slow]
From: Paul Kienzle <pkienzle at users dot sourceforge dot net>
To: Paul Thomas <paulthomas2 at wanadoo dot fr>,         octave-maintainers-list list <octave-maintainers@bevo.che.wisc.edu>
Cc: Ben Diedrich <Ben dot Diedrich at noaa dot gov>
Date: Sun, 28 Mar 2004 13:39:27 -0500

Tests of malloc and new [] for cygwin and mingw 3.2 and 3.3 and linux 
gcc 3.3.
Someone please fill in numbers for 'native' windows compilers, such as
visual C and Intel.

=== Times, running under msys on a Windows 2000 PII-300 system

System		real		user		sys
mingw333	17.936	0.030	0.040
cygwin331	72.394	0.020	0.060
Cmingw333	12.277	0.010	0.060
Ccygwin331	24.355	0.030	0.050

System		real		user		sys
mingw323	18.837	0.020	0.040
mingw32		14.160	0.010	0.060
cygwin32		15.933	0.020	0.050
Cmingw32	12.668	0.030	0.040
Ccygwin32	14.410	0.010	0.080

=== Times, running under bash on a Debian PII-400 system

System		real		user		sys
linux332		 4.808	4.800	0.010
Clinux332	 3.162	3.160	0.000

=== Versions

mingw32		3.2 (mingw special 20020817-1)
mingw323	3.2.3 (mingw special 20030504-1)
mingw333	3.3.3 (mingw special)
cygwin32		3.2 (20020927 prerelease), linked against stdc++.dll
cygwin331	3.3.1-3 (cygming special)
linux332		3.3.2 20030908 (Debian prerelease)

=== C++ Compiled with g++ -O2.  Run under msys.
// Author Paul Thomas
#include <iostream>
using namespace std;

int main()
{
   for (int iloop = 0; iloop < 10000000; iloop++)
   {
     double *myarray;
     if ((myarray = new double [1]) == NULL)
         cout << "unable to allocate my array at iloop=" << iloop << 
endl;
     delete [] myarray;
   }
   cout << "done looping" << endl;
   return 0;
}

=== C Compiled with gcc -O2.  Run under msys.
/* modified from C++ by Paul Kienzle */
#include <stdio.h>
int main()
{
   int iloop;
   for (iloop = 0; iloop < 10000000; iloop++)
   {
     double *myarray = (double *)malloc(sizeof(double));
     if (myarray== NULL) { printf("alloc failed\n"); exit(1); }
     else free (myarray);
   }
   return 0;
}