Messages in this thread |  | | | Date | Thu, 16 Aug 2012 12:48:49 -0400 | | From | Jeff Garzik <> | | Subject | Re: [GIT PULL] Update LZO compression |
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On 08/16/2012 12:20 PM, Andi Kleen wrote: >> If you think a little bit, I bet you could come up with a solution that >> operates at cacheline-aligned granularity, something that would be _even >> faster_ than simply fixing the code to do aligned accesses. > > Cache aligned compression is unlikely to compress anything at all. > Compression algorithms are usually by definition unaligned.
Sure it's a bitstream, but that does not imply the impossibility of reading data in in an word-aligned manner.
Maybe cache-aligned is ambitious, because of resultant code bloat, but machine-int-aligned is doable and reasonable.
Jeff
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