diff options
| author | Mohammad Alsaleh <ce.mohammad.alsaleh@gmail.com> | 2014-12-30 17:14:08 +0200 |
|---|---|---|
| committer | Allan McRae <allan@archlinux.org> | 2015-01-02 21:48:59 +1000 |
| commit | 95da285f5670a56faf3bac0d999a6ba6d7153fab (patch) | |
| tree | e3ca5399a5663eed32098ee927e26932510b9884 /scripts | |
| parent | 8da9be0955fc759f43c40dab8985f9d17ac8462a (diff) | |
pkgdelta: Use high compression options offered by xdelta3
* Add -9 which is the highest compression level.
* Use lzma for secondary compression.
Decompression speed is largely unaffected as most cycles are consumed
by xz for re-compression.
Some numbers:
clang x86_64 [3.5.0-2.1 to 3.5.0-3]
17.21MiB default (0.73)
15.67MiB -9 (0.67)
13.59MiB -9 -S djw (0.58)
12.01MiB -9 -S lzma (0.51)
inkscape x86_64 [0.48.5-3 to 0.48.5-4]
02.69MiB default (0.21)
01.64MiB -9 (0.13)
01.30MiB -9 -S djw (0.10)
01.01MiB -9 -S lzma (0.08)
Signed-off-by: Mohammad Alsaleh <CE.Mohammad.AlSaleh@gmail.com>
Signed-off-by: Allan McRae <allan@archlinux.org>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/pkgdelta.sh.in | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/pkgdelta.sh.in b/scripts/pkgdelta.sh.in index be49326e..fe63974d 100644 --- a/scripts/pkgdelta.sh.in +++ b/scripts/pkgdelta.sh.in @@ -140,7 +140,7 @@ create_xdelta() deltafile=$(dirname "$newfile")/$pkgname-${oldver}_to_${newver}-$arch.delta local ret=0 - xdelta3 -q -f -s "$oldfile" "$newfile" "$deltafile" || ret=$? + xdelta3 -q -f -9 -S lzma -s "$oldfile" "$newfile" "$deltafile" || ret=$? if (( ret )); then error "$(gettext "Delta could not be created.")" return 1 |