[Mono-dev] Big performance gaps between .NET, Mono (Suse/Debian) ?

Euan MacInnes euan_macinnes at hotmail.com
Tue Oct 6 06:31:54 EDT 2009

What is the background noise on the CPU load in the VMWare environments? Are all the CPUs running at the same spare capcity, and the same/similar CPU utilisation during the tests, or are tasks running in the background, system updates etc.. on the Linuxes that's eating resources?



Date: Tue, 6 Oct 2009 12:27:12 +0200
From: skolima at gmail.com
To: mono-devel-list at lists.ximian.com
Subject: Re: [Mono-dev] Big performance gaps between .NET,	Mono (Suse/Debian) 	?

On Tue, Oct 6, 2009 at 12:15 PM, Robert Jordan <robertj at gmx.net> wrote:

Lionel Cuir wrote:

> A few hints on how I did my tests:

> - the OS are: a bare XP SP3, a bare OpenSuse (kernel 2.6.27), a Debian with

> a lightened kernel (2.6.30) - "bare" = the OS is up-to-date but no other

> software installed

> - all OS were running as vmware guest (in vm workstation 6.5) with two

> "cpus" (dual-core T7200) and 512Mo of RAM


> - Mono version was on Suse, and 2.5 (compiled from SVN r140059) on

> Debian. .NET version is 3.5

> - On Suse and Debian, I both run the tests with the exe compiled with csc

> (.net) and with the exe compiled with gmcs - the results were the same.

You're benching different Mono versions. Mono 2.4 was branched

in January, whereas r140059 is pretty up-to-date.

 Besides, while measuring Dictionary<T, K> performance has some relation to actual program performance, I doubt whether anyone will call IPAdress.ToString() often enough to even notice the speed difference...
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