Kein-Hong Man wrote:
For CVS version:
| MB/sec
lua1.lua | 5.8
Editor.cxx | 5.5
perlfunc.pod | 8.3 # a simple file is very fast
CPAN.pm | 1.3 # new perf not so good...
...
For 1.64 version:
...
CPAN.pm | 5.8 # old perf comparable to Lua/C lexer
Sorry about replying to my own posts. Just a brief note: A change
to the unoptimized lookback/lookforward logic can probably speed
things up a lot. This involves grabbing the entire word first,
then testing if it's a keyword. If it is not a keyword, then
lookback/lookforward scanning does not have to be performed as
there is no ambiguity. Basically, the lexer is scanning too
promiscuously, so we want to perform additional scanning only when
there is an ambiguity that needs to be resolved. There are
probably other optimization opportunities too, so I think the
performance hit isn't going to be that bad.
--
Cheers,
Kein-Hong Man (esq.)
Kuala Lumpur, Malaysia
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