zlib performance

[Daniel Kozák via Digitalmars-d-learn]

On Fri, 07 Aug 2015 08:42:45 +0000
"yawniek" <dlang at srtnwz.com> wrote:

> On Friday, 7 August 2015 at 08:24:11 UTC, Daniel Kozák wrote:
> 
> > can you try it with ldc?
> >
> > ldc[2] -O -release -boundscheck=off -singleobj  app.d
> 
> 
> ldc 0.15.2 beta2
> 2.86s user 0.55s system 77% cpu 4.392 total
> 
> v2.068-devel-8f81ffc
> 2.86s user 0.67s system 78% cpu 4.476 total
> 
> v2.067
> 2.88s user 0.67s system 78% cpu 4.529 total
> 
> (different file, half the size of the one above:)
> archlinux, virtualbox vm, DMD64 D Compiler v2.067
> real	0m2.079s
> user	0m1.193s
> sys	0m0.637s
> 
> zcat:
> real	0m3.023s
> user	0m0.320s
> sys	0m2.440s
> 
> 
> is there a way to get rid of the flush in the end so everything 
> happens in one loop? its a bit inconvenient when i have another 
> subloop that does work
> 

I am not sure but I do not tkink so, it is currently possible.

Btw. If you want to remove [i]dup. you can use this code:

http://dpaste.dzfl.pl/f52c82935bb5