[TUHS] "Webster's Second on the Head of a Pin"?
Douglas McIlroy
douglas.mcilroy at dartmouth.edu
Wed Mar 12 22:41:31 AEST 2025
Thanks for the advice. I somehow had inferred from the man page that 512M
was the default. In any event, it doesn't move the needle on compression
ratio.
Doug
On Tue, Mar 11, 2025 at 10:47 AM Jeff Johnson <trnsz at pobox.com> wrote:
> As far as getting maximum compression from lzip, `lzip -9 -s 512Mi`
> is usually the preferred invocation. I think the default dictionary
> size at -9 is 64MiB, but that's not that relevant I guess, unless
> we are comparing different methods and trying to see about what
> ratios different algorithms get at similar memory usage.
>
> --
> Jeffrey H. Johnson
> trnsz at pobox.com
>
> On Mon, Mar 10, 2025, at 8:23 PM, Douglas McIlroy wrote:
> > Gnu lzip -9 got a 3.92 compression factor , while Morris-Thompson got
> 4.52.
>
> --
> Jeffrey H. Johnson
> trnsz at pobox.com
>
> On Mon, Mar 10, 2025, at 8:23 PM, Douglas McIlroy wrote:
> > Gnu lzip -9 got a 3.92 compression factor , while Morris-Thompson got
> 4.52.
>
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