[Mono-list] Performance of Mono 2.10 vs. Mono 3.0

[Charles Esterbrook]

I got this down from about 50,000 lines to 62.  :-)

The attached standalone C# program runs 38.9% slower on Mono 2.10.10
than on Mono 2.10.9 on my Mac OS X 10.6.8 box. Anyone else?

If the attachment doesn't come through, it's also on the bugzilla ticket.

The program is nonsensical. It just does some reflection and builds up
lists, sets and dictionaries.

$ mono --version
Mono JIT compiler version 2.10.9 (tarball Mon May  7 20:25:51 EDT 2012)
Copyright (C) 2002-2011 Novell, Inc, Xamarin, Inc and Contributors.
www.mono-project.com
	TLS:           normal
	SIGSEGV:       normal
	Notification:  kqueue
	Architecture:  x86
	Disabled:      none
	Misc:          debugger softdebug
	LLVM:          yes(2.9svn-mono)
	GC:            Included Boehm (with typed GC)

$  mono benchmark.exe
elapsed: 2045

$  mono benchmark.exe
elapsed: 2043

$  mono benchmark.exe
elapsed: 2046

$  mono --version
Mono JIT compiler version 2.10.10 (mono-2-10/4d9ada6 Wed Nov 28
22:38:28 EST 2012)
Copyright (C) 2002-2012 Novell, Inc, Xamarin, Inc and Contributors.
www.mono-project.com
	TLS:           normal
	SIGSEGV:       normal
	Notification:  kqueue
	Architecture:  x86
	Disabled:      none
	Misc:          softdebug
	LLVM:          yes(2.9svn-mono)
	GC:            Included Boehm (with typed GC)

$  mono benchmark.exe
elapsed: 2838

$  mono benchmark.exe
elapsed: 2868

$  mono benchmark.exe
elapsed: 2840

Taking the middle values, the slow down is 2045 -> 2840 or 38.9%.

I'm looking forward to hearing what this was caused by.


-- 
Charles Esterbrook
http://charles-esterbrook.com
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