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* [gcc r13-4261] maintainer-scripts/gcc_release: compress xz in parallel
@ 2022-11-23 9:53 Richard Sandiford
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From: Richard Sandiford @ 2022-11-23 9:53 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:2650b6f9147c0d855c2763610b8a4bff18f5b5e0
commit r13-4261-g2650b6f9147c0d855c2763610b8a4bff18f5b5e0
Author: Sam James <sam@gentoo.org>
Date: Tue Nov 8 07:14:38 2022 +0000
maintainer-scripts/gcc_release: compress xz in parallel
1. This should speed up decompression for folks, as parallel xz
creates a different archive which can be decompressed in parallel.
Note that this different method is enabled by default in a new
xz release coming shortly anyway (>= 5.3.3_alpha1).
I build GCC regularly from the weekly snapshots
and so the decompression time adds up.
2. It should speed up compression on the webserver a bit.
Note that -T0 won't be the default in the new xz release,
only the parallel compression mode (which enables parallel
decompression).
-T0 detects the number of cores available.
So, if a different number of threads is preferred, it's fine
to set e.g. -T2, etc.
Signed-off-by: Sam James <sam@gentoo.org>
* gcc_release (XZ): Add -T0.
Diff:
---
maintainer-scripts/gcc_release | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/maintainer-scripts/gcc_release b/maintainer-scripts/gcc_release
index 2456908d716..962b8efe99a 100755
--- a/maintainer-scripts/gcc_release
+++ b/maintainer-scripts/gcc_release
@@ -609,7 +609,7 @@ FILE_LIST=""
# Programs we use.
BZIP2="${BZIP2:-bzip2}"
-XZ="${XZ:-xz --best}"
+XZ="${XZ:-xz -T0 --best}"
CVS="${CVS:-cvs -f -Q -z9}"
DIFF="${DIFF:-diff -Nrcpad}"
ENV="${ENV:-env}"
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