On Tue, 19 Sep 2006 21:33:14 +0200 "Rafael J. Wysocki" <[EMAIL PROTECTED]> wrote:
> Hi, > > On Tuesday, 19 September 2006 20:31, Pavel Machek wrote: > > > > > I'd say this is in agreement with the LZF documentation I > > > > > read. It says the _decompression_ should be (almost) as fast > > > > > as a "bare" read, and there's much less data to read if they > > > > > are compressed. However, _compression_ takes time which > > > > > offsets the gain resulting from the decreased amount of data > > > > > to write. > > > > > > > > Then Nigel is doing something clever and we do something stupid. > > > > > > Well, I don't think we do anything stupid. Of course you're free > > > to review the code anyway. ;-) > > > > > > Nigel may be using another version of the LZF algorithm which is > > > optimized for speed. I didn't experiment with libLZF too much, > > > so we're just using the default settings. Still AFAIR it is > > > configurable to some extent. > > > > Maybe we can just ask Nigel? ;-). > > > > > > > > - early writeout is as fast with 1% steps as it is with 20% > > > > > > steps. It does not really matter in my tests (this is why i > > > > > > did not retry compression with 20% steps). > > > > > > > > > > This is what we wanted to verify. ;-) > > > > > > > > For one machine, we'd probably need to test more machines. > > > > > > Yes, certainly. > > > > I'd go for 1% steps. If someone finds it slows his machine down, > > he's the one that needs to do the benchmarking. > > I guess this means we should apply the Jason's patch? Should we also make early write the default? If I followed the thread, I think the conclusion was that it is faster, right? grts Tim
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