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package_rpm: use zstd instead of xz

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zstd has similar time and space performance in compression but is
vastly faster in decompression, which benefits rootfs creation
(especially when installing very large packages) and on-target
package installation.

Also, ensure ZSTD_THREADS doesn't change sstate checksums. The
detailed explanation is in the commit making similar change for
XZ_THREADS.

(From OE-Core rev: e72c0b94554a9bc293844ec2bddb0c04ea19791d)

Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Alexander Kanavin
2021-10-04 11:22:48 +02:00
committed by Richard Purdie
parent 543e83e852
commit 4a4d5f78a6
2 changed files with 6 additions and 2 deletions
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meta/classes/package_rpm.bbclass
+2 -2
View File
@@ -684,8 +684,8 @@ python do_package_rpm () {
cmd = cmd + " --define '_use_internal_dependency_generator 0'"
cmd = cmd + " --define '_binaries_in_noarch_packages_terminate_build 0'"
cmd = cmd + " --define '_build_id_links none'"
cmd = cmd + " --define '_binary_payload w6T%d.xzdio'" % int(d.getVar("XZ_THREADS"))
cmd = cmd + " --define '_source_payload w6T%d.xzdio'" % int(d.getVar("XZ_THREADS"))
cmd = cmd + " --define '_binary_payload w19T%d.zstdio'" % int(d.getVar("ZSTD_THREADS"))
cmd = cmd + " --define '_source_payload w19T%d.zstdio'" % int(d.getVar("ZSTD_THREADS"))
cmd = cmd + " --define 'clamp_mtime_to_source_date_epoch 1'"
cmd = cmd + " --define 'use_source_date_epoch_as_buildtime 1'"
cmd = cmd + " --define '_buildhost reproducible'"
meta/conf/bitbake.conf
+4
View File
@@ -816,6 +816,10 @@ XZ_THREADS[vardepvalue] = "1"
XZ_DEFAULTS ?= "--memlimit=${XZ_MEMLIMIT} --threads=${XZ_THREADS}"
XZ_DEFAULTS[vardepsexclude] += "XZ_MEMLIMIT XZ_THREADS"
# Default parallelism for zstd
ZSTD_THREADS ?= "${@oe.utils.cpu_count(at_least=2)}"
ZSTD_THREADS[vardepvalue] = "1"
# Limit the number of threads that OpenMP libraries will use. Otherwise they
# may fallback to using all CPUs
export OMP_NUM_THREADS = "${BB_NUMBER_THREADS}"