Re: CVS commit: src

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

On Thu, Feb 24, 2011 at 05:23:12PM +0200, Antti Kantee wrote:
> On Thu Feb 24 2011 at 04:28:50 +0000, Joerg Sonnenberger wrote:
> > Log Message:
> > Allow storing and receiving the LWP private pointer via ucontext_t
> > on all platforms except VAX and IA64. Add fast access via register for
> > AMD64, i386 and SH3 ports. Use this fast access in libpthread to replace
> > the stack based pthread_self(). Implement skeleton support for Alpha,
> > HPPA, PowerPC, SPARC and SPARC64, but leave it disabled.
> > 
> > Ports that support this feature provide __HAVE____LWP_GETPRIVATE_FAST in
> > machine/types.h and a corresponding __lwp_getprivate_fast in
> > machine/mcontext.h.
> 
> Did you run benchmarks?  The initial data is quite alarming:

I did not.

> Starting from a window including this commit gson's test run timeouts
> due to taking too long.
> 
> Pgoyette's amd64 test run with sources from 2011-02-24 04:20:03 UTC took
> 1:20h to complete and sources from 2011-02-24 09:20:03 UTC took 1:47h
> to complete.
> 
> Also, a few test failures seemed to pop up.

I don't know about qemu performance, but the native case should be
pretty much unchanged. Feel free to perform benchmarks if you want.
There are also changes to EST in that time window...

Joerg