[Development] QtSC: Scene Graph discussion

Thiago Macieira thiago.macieira at intel.com
Thu Aug 1 22:46:00 CEST 2013


On quinta-feira, 1 de agosto de 2013 20:21:23, Laszlo Papp wrote:
> On Thu, Aug 1, 2013 at 7:59 PM, Thiago Macieira
> 
> <thiago.macieira at intel.com>wrote:
> > On quinta-feira, 1 de agosto de 2013 19:38:12, Laszlo Papp wrote:
> > > 3
> > 
> > This discussion is going off on a tangent but...
> > 
> > you do realise that there's an overhead associated with dynamic libraries,
> > right? The code runs slightly slower due to indirect access to functons
> > and
> > data, and there's a start-time impact due to the relocation and dynamic
> > linking. Even if you use prelink, the problems do not go away completely.
> 
> Startup time is no concern in our product.

I did mention runtime performance impact too due to -fPIC. All architectures 
(except IA-64[*]) are affected. Please take the time to investigate a single 
statically-linked executable.

[*] only because -fPIC is mandatory on IA-64, even for executables.
-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel Open Source Technology Center
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 190 bytes
Desc: This is a digitally signed message part.
URL: <http://lists.qt-project.org/pipermail/development/attachments/20130801/dca714ff/attachment.sig>


More information about the Development mailing list