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This will help improve perl core smoke times on VC. Most usage of Win32:: is through Cwd:: to get the CWD. PE version resource inspection and GUID generation are very rare by comparison.
faster loading time, no Config.pm in the perl process
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Some time savings in loading Win32.pm/Win32.dll, the module was
dmake installed between tests.BEFORE
C:\sources\win32>timeit -f t.dat perl -e"system('perl -MWin32 -e"0"') for 0..3
00"
Version Number: Windows NT 6.1 (Build 7601)
Exit Time: 10:45 pm, Tuesday, January 12 2016
Elapsed Time: 0:00:12.837
Process Time: 0:00:00.390
System Calls: 527642
Context Switches: 90291
Page Faults: 412956
Bytes Read: 39647078
Bytes Written: 1406213
Bytes Other: 1314035
C:\sources\win32>
AFTER delay load
C:\sources\win32>timeit -f t.dat perl -e"system('perl -MWin32 -e"0"') for 0..3
00"
Version Number: Windows NT 6.1 (Build 7601)
Exit Time: 10:37 pm, Tuesday, January 12 2016
Elapsed Time: 0:00:12.388
Process Time: 0:00:00.265
System Calls: 498354
Context Switches: 85755
Page Faults: 396541
Bytes Read: 39622468
Bytes Written: 0
Bytes Other: 1267236
C:\sources\win32>
AFTER XSLoader
C:\sources\win32>timeit -f t.dat perl -e"system('perl -MWin32 -e"0"') for 0..3
00"
Version Number: Windows NT 6.1 (Build 7601)
Exit Time: 10:38 pm, Tuesday, January 12 2016
Elapsed Time: 0:00:10.805
Process Time: 0:00:00.374
System Calls: 426147
Context Switches: 78001
Page Faults: 367246
Bytes Read: 33923778
Bytes Written: 61652
Bytes Other: 1060160
C:\sources\win32>