[linux-mm-cc] [RFC] LZO de/compression support - take 4

[Nitin Gupta]

On 5/28/07, Daniel Hazelton <dhazelton at enter.net> wrote:
> On Monday 28 May 2007 05:08:54 Nitin Gupta wrote:
> > On 5/28/07, Daniel Hazelton <dhazelton at enter.net> wrote:
> > > On Monday 28 May 2007 04:37:04 Nitin Gupta wrote:
> > > > On 5/28/07, Daniel Hazelton <dhazelton at enter.net> wrote:
>
> New testbed based on minilzo complete.
> Results from run using 1000 runs to generate averages:
> 1000 run averages:
> 'Tiny LZO':
>         Combined: 55.196 usec
>         Compression: 37.132 usec
>         Decompression: 18.064 usec
> 'miniLZO':
>         Combined: 55.785 usec
>         Compression: 40.862 usec
>         Decompression: 14.923 usec
>

Great!

I believe its now ready for mainline. We can do further cleanups and
optimizations there - more users of this code will surely drive more
enhancements.

> (using (tiny/full)/100 for percentages:
> 'Tiny' is 0.9% faster on average


I think this is more appropriate: [(full-tiny)/full]*100
=> tiny is ~1% faster on average.


> Same for the Compression
> 'safe' decompressor from tiny is 1.2% slower than unsafe from minilzo)
>

This is expected :)


Cheers,
Nitin