Re: Autoconf distributions and xz dependency

[Jim Meyering]

Jim Meyering wrote:
> Bob Friesenhahn wrote:
>> On Fri, 2 Mar 2012, Bob Friesenhahn wrote:
>>>
>>> I tried to test how much peak memory 'xz' uses to decompress the
>>> autoconf tarball but was (apparently) defeated by the strange way
>>> that 'xz' is linked. I will try again with a different tool this
>>> weekend.
>>
>> Ok, I have now measured how much memory the 'xz' I have here requires
>> under Linux to decompress the autoconf beta tarball.  It requires
>> 67,184,168 bytes of heap memory.  This seems to match the xz
>> documentation for the -9 compression level.
>
> The autoconf tarball is not large enough to warrant using xz's -9 option.
> A simple xz -e (i.e., use the default of -6) should be fine.

To clarify, using --extreme (-e) with no compression preset
is usually best.