Perl Tops "Wide Finder" Results

Comment on Perl Tops "Wide Finder" Results

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Re: Perl Tops "Wide Finder" Results by erroneousBollock (Curate) on Nov 22, 2007 at 01:29 UTC
For now ;) Unfortunately, we should prepare ourselves for the next JoCaml submission to knock at least another 25% off the `wf(32)` elapsed time :(. ~~From what I've read elsewhere, O'Rourke's `wf.pl` could be made faster simply by switching from Sys::MMap to MMap. (~~ Does the `:mmap` PerlIO layer introduce significant overhead, as compared to Sys::MMap::mmap()? It'd be nice if you could basically get speedups for free on systems that support mmap. What I like about the currently leading Perl solution (`wf.pl`) is that it's still a straightforward implementation of an obvious approach to the problem... not too much optimisation necessary to make it run fast. -David	[reply] [d/l] [select]
Re^2: Perl Tops "Wide Finder" Results by educated_foo (Vicar) on Nov 22, 2007 at 02:57 UTC
AFAICT Sys::MMap and MMap are the same module -- Scott Walters just took it over and updated it for recent perls.	[reply]
Re^3: Perl Tops "Wide Finder" Results by erroneousBollock (Curate) on Nov 22, 2007 at 03:18 UTC
Ah, you're right. I went looking for where I'd read it... The difference is between doing `new MMap` (slow) and `mmap` (fast), due to the `tie()` interface. Don't know if that's still true. -David	[reply] [d/l] [select]

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