From: Larry M. <lm...@bi...> - 2012-10-16 00:49:21
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On Mon, Oct 15, 2012 at 08:37:21PM -0400, Kevin Kenny wrote: > On 10/15/2012 08:26 PM, Larry McVoy wrote: > > Before you get all excited about zlib in the core, let me point you at > > lz4. The tl;dr - zlib -6 compresses better but is slower in both > > directions (MUCH slower), zlib compresses about the same but is still > > slower. lz4 compresses faster than gig ether (about 300MB/sec) and > > uncompresses at about 1.5GB/sec. > > Is it the same compression - that is, something compressed by zlib will > uncompress with lz4, and vice versa? > > Because otherwise it fails to satisfy the chief reason for zlib in the > core, which is for data interchange. It's not compat at all. It's just compression that is faster than disk so it's basically free. zlib is much slower than disk so it's not free. -- --- Larry McVoy lm at bitmover.com http://www.bitkeeper.com |