On Fri, 08 Jul 2011 19:19 -0500, "iosif" <[email protected]> wrote: > Not all compressions are created equal on all formats: > http://sourceforge.net/projects/boost/files/boost/1.46.1/ ... 7zip > wins here.
And that is exactly the point: In many cases it's not about the file size, it's about how much you gain. In the past when we had to use dial-up, maybe using an insane compression algorithm to get a 40MB file from a 180MB file file is wise, even the decompression takes 1 hour, because you would end up spending less time downloading+ extracting overall. Now it might be a better choice using another program to get a 60MB file with 30 second extraction time, the extra 20MB saved isn't really "worth it." Trading so much time (not free) compressing and de-compressing in cases where bandwidth and storage are essentially free is not a good choice. It's hard to find where the "sweet spot" is, and it varies from cases to cases. Dr. Bindner, I haven't thought of disk cache, I will try again multiple time to make sure I got it right. The "std" for "-" is a "technical difficulty" because the way the parameters are handled in the demo lz4 program. I should have rewritten the whole thing. -- Huan Truong 600-988-9066 http://tnhh.net/
