Re: Decompression speed: zip vs lzo

On Fri, 11 Jan 2008, Sam Vilain wrote:

Ok. 

It may be that it might help other cases, but that seems unlikely.

The more likely answer is that it's either of:

 - yes, zlib uncompression is noticeable in profiles, but that the 
   cold-cache access is simply the bigger problem, and getting rid of zlib 
   just moves the expense to whatever other thing that needs to access it 
   (memcpy, xdelta apply, whatever)

or

 - I don't know exactly which patch you used (did you just do the 
   "core.deltacompression=0" thing?), and maybe zlib is fairly expensive 
   even for just the setup crud, even when it doesn't really need to be.

but who knows..

		Linus