Re: push parser implemenation

[Bob Rossi]

On Fri, Apr 07, 2006 at 12:06:54PM -0400, Bob Rossi wrote:
> > >Is there an easy script I can run on my Linux/AMD machine to generate
> > >these results?
> > 
> > Yes, the script I had attached.  Here it is with the chidren stuff  
> > fixed.
> 
> OK, I have the script, and I have bison installed in 
> /home/bob/cvs/bison/bench/target.

Hmmm, let me clarify. I did 
'export BISON=/home/bob/cvs/bison/bench/target/bin/bison'
was that a good idea?

It seems as if,
PATH=/home/bob/cvs/bison/bench/target/bin:$PATH perl bench.pl
is running the script, will this give me the results you want?

Finally, after doing these things in this order:
- a fresh cvs co
- apply patch
- ./bootstrap
- ./configure
- make

I get a compile error. I had to manually do,
  cd src/
  /usr/bin/bison parse-gram.y
  mv parse-gram.tab.c parse-gram.c
  mv parse-gram.tab.h parse-gram.h

and then do a make again. Is this OK?

Here are the results with a normal ./configure. I'm curious to see why
this slows down so much. Maybe I should run gprof.

Thanks,
Bob Rossi

Benchmark: timing 50 iterations of push-pure, push-push, push-yacc, yacc-pure, 
yacc-yacc...
 push-pure: 24 wallclock secs (22.90 cusr +  0.30 csys = 23.20 CPU) @  2.16/s 
(n=50)
 push-push: 26 wallclock secs (25.16 cusr +  0.30 csys = 25.46 CPU) @  1.96/s 
(n=50)
 push-yacc: 22 wallclock secs (22.21 cusr +  0.28 csys = 22.49 CPU) @  2.22/s 
(n=50)
 yacc-pure: 18 wallclock secs (17.68 cusr +  0.30 csys = 17.98 CPU) @  2.78/s 
(n=50)
 yacc-yacc: 18 wallclock secs (17.36 cusr +  0.30 csys = 17.66 CPU) @  2.83/s 
(n=50)
            Rate push-push push-pure push-yacc yacc-pure yacc-yacc
push-push 1.96/s        --       -9%      -12%      -29%      -31%
push-pure 2.16/s       10%        --       -3%      -22%      -24%
push-yacc 2.22/s       13%        3%        --      -20%      -21%
yacc-pure 2.78/s       42%       29%       25%        --       -2%
yacc-yacc 2.83/s       44%       31%       27%        2%        --
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