Re: DLL loading performance

>
> Hi there!
>
> Another performance issue but this time it is a load time performance.
> That is the time to load dynamically a DLL has regressed by a factor of 50.
>
> My current investigation point to this commit:
>
> <<
> commit f7a18150a5b93a8efce08e76b00b4f3a4a04c151
> Author: Kai Tietz <kai.tietz@...>
> Date:   Fri Nov 6 15:50:55 2009 +0000
>
>    2009-11-06  Kai Tietz  <kai.tietz@...>
>
>            * pe.em (DEFAULT_PSEUDO_RELOC_VERSION): New macro.
>            (gld_XXX_before_parse): Set pseudo-relocation default
>            version to DEFAULT_PSEUDO_RELOC_VERSION.
>            (gldXXX_handle_option): Likewise.
>>>
>
> Indeed a linker (not changing the compiler) build before this date
> create a DLL which loads (just calling Win32 LoadLibrary) in 0.8s and a
> linker built after this commit create a DLL which loads in 40s.
>
> This TN move 32bits Windows from runtime pseudo reloc v1 to v2.
>
> Does this rings a bell? Any idea to what could be so slow in v2? Any
> information about v1 vs v2, what has been changed?
>
> If I want to debug this, where should I start looking?
>
> Thanks in advance for any assistance resolving this issue.
>
> Pascal.
>
> --
>
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> --| Pascal Obry                           Team-Ada Member
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