Messages in this thread | | | Date | Wed, 22 Jul 2009 09:08:31 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 3/5] Add support for LZO-compressed kernels |
| |
kevin.granade@gmail.com wrote: > > > > So for a compression ratio that is still relatively close to gzip, it's > > much faster to extract, at least in that case. > > Is that "time to run the extraction algorithm", or "time to read in > image from media and extract"? I think the time to read from the media > would tend to dominate the decompression time. > Either way, could you provide the other time for each algorithm in order > to give a sense of how this might scale to other CPU speeds/media read > speeds? >
If you have very slow media, you probably want to use LZMA. If you have a very slow CPU and comparatively fast media, LZO might be a good option... I have heard people asking for *uncompressed* kernels for this reason, but LZO runs at a significant fraction of memcpy() speed.
-hpa
| |