On Wed, Jun 15, 2016 at 10:31:16AM -0400, Laine Stump wrote:
On 06/15/2016 09:03 AM, Andrea Bolognani wrote:
This allows us to produce releases that are roughly a third in
size, have no limitation on path length, and are still readable
by all supported platforms.
---
I just want to point out that the tarfile is built every time you run
"make rpm" (which I do quite a lot - I prefer installing rpms to the
carnage created by make install), and this increases the time for make
rpm on my system by 1min38sec. (jtomko may have something to say about
that, since he's been interested in shaving fractions of a second off
the build time in the last few days :-O)
Use:
XZ_OPT="-3 --threads=0" make rpm
The most important speedup comes from dropping the '-e' option
which automake uses by default.
(-1 is faster than -0 in my testing, -2 and -3 take a few seconds more
but drop megabytes off the size. All of them are faster and result in
a smaller size than gz --best we used before)
On my RHEL, rpmbuild does not recompress sources by default,
so this will leave you with a larger srpm.
For binary data, the default level is 2:
%_binary_payload w2.xzdio
but even then the *rpms made with lower compression leves were
marginally larger than the default ones. I did not find out why.
Jan
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