Re: Cygwin slow on x64 systems

[Sagi Ben-Akiva <sagi at graphtech dot co dot il>]

Hi Magnus,

I applied your patch but I don't notice for any improvement in performance with 
my test case (I still get only 7 lines/sec).

I tried it with several cygwin 1.7.7-1 revisions
Which version of cygwin sources do you use ?
Did you try it with the latest snapshot ?

Thanks,
  Sagi.

Magnus Holmgren wrote:
> > > > I did some testing on my 64-bit Vista system, and it appears that
> > > > CreateThread is the main cause.
> > >
> > > To test this, I removed the call to sigproc_init in dll_crt0_0 and made sure
> > > it was always called in dll_crt0_1 instead. Suddenly the sigp thread started
> > > executing immediately, and its initialization was complete long before
> > > wait_for_sigthread was called.
> >
> > Since you obviously have a patch, would you mind sharing it, rather than
> > just your conclusions from said patch?
>
> Not quite ready for commit as is, but here it is:
>
> Index: src/winsup/cygwin/dcrt0.cc
> ===================================================================
> RCS file: /cvs/src/src/winsup/cygwin/dcrt0.cc,v
> retrieving revision 1.382
> diff -r1.382 dcrt0.cc
> 746,747c746,747
> <    if (!dynamically_loaded)
> <      sigproc_init ();
> ---
> >    //if (!dynamically_loaded)
> >      //sigproc_init ();
> 792c792
> <    if (dynamically_loaded)
> ---
> >    //if (dynamically_loaded)
>
>    Magnus



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