Re: [Quickfix-users] QuickFix 1.13.3 much slower after upgrade to Visual Studio 2010 / .NET 4.0

[sevzas <se...@gm...>]

Closer look revealed the problem was not in QuickFix.

Our code was using ThreadLocal<T> to reference the QuickFix42.NewOrderSingle
object. For some reason, the transition from .NET 3.5 to .NET 4.0 has
dramatically slowed down referencing a
ThreadLocal<QuickFix42.NewOrderSingle> . When this was changed to a regular
instance variable, the performance problems disappeared.

If you have any thoughts on why this is happened, I'm sure the forum will
appreciate hearing from you!


sevzas wrote:
> 
> We've been using quickfix 1.13.3 built using VS 2008 targeting X64 for a
> little over a year.
> 
> During the process of upgrading our .NET app to use Visual Studio 2010 /
> .NET 4.0, I rebuilt QuickFix using VS 2010.
> 
> I find that while nearly all of my app has registered significant
> performance gains under .NET 4.0, the Quickfix functionality is about
> *half* as fast - twice as slow.
> 
> I determined this using Eqatec 3.3 profiler.  Regular "user" testing
> confirms this.  Unfortunately Eqatec will not allow me to profile mixed
> mode assemblies, so I cannot profile inside QuickFix.   Before I bring in
> another profiling tool, I wanted to reach out to the Quickfix user
> community to see if anyone has experienced this.
> 
> I see the slowness with both the Release and the Debug builds.
> 
> 

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