Building an SDK on a machine with 8GB RAM resulted in excessive swapping
due to the xz compressor using ~20GB of memory. This is because xz is
being called with "-T 0 -9".
To allow tuning the compression versus memory usage, introduce a variable
named SDK_XZ_OPTIONS that defaults to a more sane default:
SDK_XZ_OPTIONS ?= "${XZ_DEFAULTS} ${SDK_XZ_COMPRESSION_LEVEL}"
The use of XZ_DEFAULTS fixes the excessive memory usage.
The SDK_XZ_COMPRESSION_LEVEL variable allows overriding the speed vs
compression. In an office or development environment the extra time
spent on compressing a few percent more is just not worth it.
Signed-off-by: Mike Looijmans <[email protected]>
---
meta/classes/populate_sdk_base.bbclass | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/meta/classes/populate_sdk_base.bbclass
b/meta/classes/populate_sdk_base.bbclass
index d03465b6fc..179ed93979 100644
--- a/meta/classes/populate_sdk_base.bbclass
+++ b/meta/classes/populate_sdk_base.bbclass
@@ -48,6 +48,8 @@ TOOLCHAIN_OUTPUTNAME ?= "${SDK_NAME}-toolchain-${SDK_VERSION}"
# Default archived SDK's suffix
SDK_ARCHIVE_TYPE ?= "tar.xz"
+SDK_XZ_COMPRESSION_LEVEL ?= "-9"
+SDK_XZ_OPTIONS ?= "${XZ_DEFAULTS} ${SDK_XZ_COMPRESSION_LEVEL}"
# To support different sdk type according to SDK_ARCHIVE_TYPE, now support zip
and tar.xz
python () {
@@ -58,7 +60,7 @@ python () {
d.setVar('SDK_ARCHIVE_CMD', 'cd ${SDK_OUTPUT}/${SDKPATH}; zip -r
${SDKDEPLOYDIR}/${TOOLCHAIN_OUTPUTNAME}.${SDK_ARCHIVE_TYPE} .')
else:
d.setVar('SDK_ARCHIVE_DEPENDS', 'xz-native')
- d.setVar('SDK_ARCHIVE_CMD', 'cd ${SDK_OUTPUT}/${SDKPATH}; tar
${SDKTAROPTS} -cf - . | xz -T 0 -9 >
${SDKDEPLOYDIR}/${TOOLCHAIN_OUTPUTNAME}.${SDK_ARCHIVE_TYPE}')
+ d.setVar('SDK_ARCHIVE_CMD', 'cd ${SDK_OUTPUT}/${SDKPATH}; tar
${SDKTAROPTS} -cf - . | xz ${SDK_XZ_OPTIONS} >
${SDKDEPLOYDIR}/${TOOLCHAIN_OUTPUTNAME}.${SDK_ARCHIVE_TYPE}')
}
SDK_RDEPENDS = "${TOOLCHAIN_TARGET_TASK} ${TOOLCHAIN_HOST_TASK}"
--
2.17.1
--
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