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Moin,
On Sunday 22 August 2004 13:58, Tels wrote:
> "Und jetzt kommen Sie!" - Stenkelfeld
>
>
> - -Boundary-00=_4qIKBAMkjo+ZGFc
> Content-Type: application/x-perl;
Ugh, seems the gnupg signing screwed up the mime containers or something
like that: I apologize for the garbled post.
Here is the text again:
Moin,
this is something that I had a long time sitting on my harddisk. I uploaded
v0.10 to
http://bloodgate.com/perl/packages/BigBench-0.10.tar.gz
This is a small script that makes benchmarking different module or even Perl
versions against eachother much easier.
BigBench v0.10 (c) Copyright by Tels 2001-2002. Have fun!
Usage : ./bb [options]
Options: --help print this screen and exit
--accuracy=digits round results to so many digits
--base=number print relative summary based on number
--code=sourcecode bench code snippet and ignore definitions
--definitons=file from where to read benchmark definitions
--duration=seconds run each op for at least this time
--nosummary don't print summary
--nointeger don't round results to integer
--nounlink don't unlink temporary files (for debug)
--path=libpath path to libraries used by templates
--runs=number run benchmark more than once (see --take)
--simulate=sr simulate results by using srand(sr)
--skew=factor scale reported numbers by factor
--take=run take lowest|average|highest|last
--templates=path path to templates to be used
--terse terse summary (unless --nosummary)
--tight more tight summary (smaller spacing)
Options may be abbreviated, their case does not matter.
Examples: ./bb --def=math.def --terse --skew=2.1 # better printable?
./bb --def=str.def --inc=math --duration=5 # really
fine-grained
./bb --def=some.def --nosummary # detailed
./bb --def=some.def --terse --base=100 # simulate perlbench
./bb --code='"ababba" =~ /a+/;' # only this
./bb --runs=2 --take=last # cache, then bench
Here is an excerpt from a definition file, specifiying four ops to
benchmark:
group=bcmp#0#Big integer bcmp
0#1 1#$x=$c->new('1');$y=$x->copy();##$x->bcmp($y);
0#1e10 1e10#$x=$c->new('1'x10);$y=$x->copy();##$x->bcmp($y);
group=bsqrt#0#Big integer square root
0#5#$x=$c->new('5');#$x->copy();#$x->copy()->bsqrt();
0#12#$x=$c->new('12');#$x->copy();#$x->copy()->bsqrt();
The latter two benchmark the copy() seperately from the copy()->bsqrt() to
determine how much the bsqrt() takes alone. The copy() is neccessary to
always bench the same bsqrt() operations (it would change $x otherwise).
I also attached two template files that do the actual benchmarking. First
they make sure that the proper modules are loaded, then setup the opration
(notable "$c" because our definition file will use this).
Of course, you can also just benchmark any code snippet:
./bb --code='$a =~ /abc/'
The biggst TODO is currently that it generates the benchmark and then
displays the result from that in one step. This should be separated so that
you can generate different outputs without the need to re-run the time
consuming benchmarks.
If there is sufficient interest, I'll work on that.
I've found that benchmarking different module versions automatically on a
wide range of ops enablesme to discover bugs - if something is suddenly 2
times as slow than some subtle change broke something :)
Best wishes,
Tels
- --
Signed on Sun Aug 22 14:04:08 2004 with key 0x93B84C15.
Visit my photo gallery at http://bloodgate.com/photos/
PGP key on http://bloodgate.com/tels.asc or per email.
"We have problems like this all of the time," Kirk said, trying to
reassure me. "Sometimes its really hard to get things burning." --
http://tinyurl.com/qmg5
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