Re: Transparent compression in the FS

[Ville Herva]

On Wed, Oct 15, 2003 at 11:36:24PM +0200, you [Tomas Szepe] wrote:
> On Oct-15 2003, Wed, 16:27 +0200
> Erik Mouw <erik@xxxxxxxxxxxxxxxxxxxxx> wrote:
> 
> > You have a point, but remember that modern IDE drives can do about
> > 50MB/s from medium. I don't think you'll find a CPU that is able to
> > handle transparent decompression on the fly at 50MB/s ... [snip]
> 
> You may want to check out LZO performance on a recent CPU.
> http://www.oberhumer.com/opensource/lzo/

Out of interest:

Celeron 1.4GHz, a source tar:

           compr MB/s uncompr MB/s ratio
lzo -m71:  58.2       170.2        24.4%
lzo -m972:  2.7       100.8        17.7%

gzip -1:   13.6       115.7        22.1%
gzip -6:    8.8       121.8        17.7%
gzip -9:    4.5        79.8        17.6%

lzo used assembler versions.


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