Age | Commit message (Collapse) | Author |
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Even though we had a portable extraction method for tarballs, this slowed
down the extraction immensely. I have added 2 new methods for tarball
extraction so that we have faster extraction speeds based on the system
tar implementation. Here are the options with the order of preference:
- pax: Although an uncommon program, pax is defined by POSIX, and
supports regular expressions, meaning that we can 'strip' components.
This is slightly faster than bsdtar and GNU tar.
- bsdtar/gnutar: We simply use '--strip-components 1' for these tar
implementations.
- tar: This is the portable method we had been using for a while, it's
good, gets the job done, but it is slower.
Here is also a little benchmarking I did by extracting the Linux tarball
for 10 times per method.
tarball=$CPT_CACHE/sources/linux-headers/linux-5.10.12.tar.xz
for extract in pax bsdtar tar; do
time sh -c ". cpt-lib
extract=$extract
for i in \$(seq 10); do
mkdir -p hdr; cd hdr;
tar_extract \"$tarball\"; cd ..;
rm -rf hdr
done"
done
This yields the following output, methods are as ordered above:
sh -c 75.21s user 11.11s system 115% cpu 1:14.90 total
sh -c 78.68s user 14.64s system 124% cpu 1:15.15 total
sh -c 99.88s user 69.99s system 119% cpu 2:21.70 total
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Testing the boost package, using sed results in a significant reduction
for argument generation instead of using the 'read' function. Below are
the 'time' stats for the script.
Previous:
real 0m 58.95s
user 0m 55.80s
sys 0m 3.54s
Current:
real 0m 0.66s
user 0m 0.78s
sys 0m 0.27s
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This ensures that we create the needed directories regardless of pkg_extract()
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- cleanup usage
- don't return with failure if a package doesn't have dependencies
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- Respect given filenames even when the first argument is empty
- Clean up usage output
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