Re: strcache scaling issue

[Kirill Smelkov]

On Wed, Feb 23, 2011 at 08:44:04PM +0100, Ralf Wildenhues wrote:
> * Paul Smith wrote on Mon, Feb 21, 2011 at 04:01:49PM CET:
> > On Mon, 2011-02-21 at 02:30 -0500, Paul Smith wrote:
> > > Hi Ralf.  I promoted a rework of strcache.c.  For your simple scaling
> > > test on my system with debug compiled I get these results:
> 
> > Try #2:
> > 
> >             Build Info                  1000    2000     4000
> >             3.82 -g                     2.61s   8.85s   33.52s
> >             3.82 -O2                    1.90s   7.62s   27.82s
> >             New -g (with asserts)       1.03s   2.31s    5.79s
> >             New -O2 (no asserts)        0.65s   1.50s    3.52s
> 
> Cool, thanks for addressing this Paul!

Yes, Paul's rework made 3.82 a lot more faster, but still, on larger
scale, it is slower compared to 3.81:


                        1000    2000    4000    5000    6000    7000

3.82.90 (with patch,    2.2s    4.8s    14.0s   23.5s   31.6s   44.4s
     -O3, no asserts)
3.81 -O3                2.5s    5.2s    11.5s   14.1s   18.3s   23.8s



Thanks,
Kirill