[Build] use pigz to speed up a build (sonic-net#12825)

Why I did it

It's possible to speed up some parts of a build using parallel compression/decompression.
This is especially important for build_debian.sh.

How I did it
pigz is a parallel implementation of gzip: https://zlib.net/pigz/
Some programs like docker and mkinitramfs can automatically detect and use it instead of gzip.
For tar we need to select it directly.

To enable this feature you need to set GZ_COMPRESS_PROGRAM=pigz

Makefile.work

@@ -53,6 +53,9 @@
 #  * ENABLE_BOOTCHART: Enable SONiC bootchart
 #  *                 Default: n
 #  *                 Values: y,n
+#  * GZ_COMPRESS_PROGRAM: Select pigz to reduce build time
+#  *                 Default: gzip
+#  *                 Values: pigz,gzip
 #
 ###############################################################################
 
@@ -140,6 +143,10 @@ ifeq ($(ENABLE_DOCKER_BASE_PULL),)
 	override ENABLE_DOCKER_BASE_PULL = n
 endif
 
+ifneq ($(GZ_COMPRESS_PROGRAM), pigz)
+override GZ_COMPRESS_PROGRAM = gzip
+endif
+
 ifeq ($(CONFIGURED_ARCH),amd64)
 SLAVE_BASE_IMAGE = $(SLAVE_DIR)
 MULTIARCH_QEMU_ENVIRON = n
@@ -200,6 +207,7 @@ $(shell CONFIGURED_ARCH=$(CONFIGURED_ARCH) \
 	ENABLE_FIPS_FEATURE=$(ENABLE_FIPS_FEATURE) \
 	DOCKER_EXTRA_OPTS=$(DOCKER_EXTRA_OPTS) \
 	DEFAULT_CONTAINER_REGISTRY=$(DEFAULT_CONTAINER_REGISTRY) \
+	GZ_COMPRESS_PROGRAM=$(GZ_COMPRESS_PROGRAM) \
 	j2 $(SLAVE_DIR)/Dockerfile.j2 > $(SLAVE_DIR)/Dockerfile)
 
 $(shell CONFIGURED_ARCH=$(CONFIGURED_ARCH) \
@@ -525,6 +533,7 @@ SONIC_BUILD_INSTRUCTION :=  $(MAKE) \
                            SONIC_SLAVE_DOCKER_DRIVER=$(SONIC_SLAVE_DOCKER_DRIVER) \
                            MIRROR_URLS=$(MIRROR_URLS) \
                            MIRROR_SECURITY_URLS=$(MIRROR_SECURITY_URLS) \
+                           GZ_COMPRESS_PROGRAM=$(GZ_COMPRESS_PROGRAM) \
                            $(SONIC_OVERRIDE_BUILD_VARS)
 
 .PHONY: sonic-slave-build sonic-slave-bash init reset

build_debian.sh

@@ -138,6 +138,12 @@ if [[ $CONFIGURED_ARCH == armhf || $CONFIGURED_ARCH == arm64 ]]; then
 else
     sudo LANG=C chroot $FILESYSTEM_ROOT /bin/bash -c 'cd /dev && MAKEDEV generic'
 fi
+
+## docker and mkinitramfs on target system will use pigz/unpigz automatically
+if [[ $GZ_COMPRESS_PROGRAM == pigz ]]; then
+    sudo LANG=C chroot $FILESYSTEM_ROOT apt-get -y install pigz
+fi
+
 ## Install initramfs-tools and linux kernel
 ## Note: initramfs-tools recommends depending on busybox, and we really want busybox for
 ## 1. commands such as touch
@@ -699,8 +705,8 @@ if [[ $MULTIARCH_QEMU_ENVIRON == y || $CROSS_BUILD_ENVIRON == y ]]; then
 fi
 
 ## Compress docker files
-pushd $FILESYSTEM_ROOT && sudo tar czf $OLDPWD/$FILESYSTEM_DOCKERFS -C ${DOCKERFS_PATH}var/lib/docker .; popd
+pushd $FILESYSTEM_ROOT && sudo tar -I $GZ_COMPRESS_PROGRAM -cf $OLDPWD/$FILESYSTEM_DOCKERFS -C ${DOCKERFS_PATH}var/lib/docker .; popd
 
 ## Compress together with /boot, /var/lib/docker and $PLATFORM_DIR as an installer payload zip file
-pushd $FILESYSTEM_ROOT && sudo tar czf platform.tar.gz -C $PLATFORM_DIR . && sudo zip -n .gz $OLDPWD/$ONIE_INSTALLER_PAYLOAD -r boot/ platform.tar.gz; popd
+pushd $FILESYSTEM_ROOT && sudo tar -I $GZ_COMPRESS_PROGRAM -cf platform.tar.gz -C $PLATFORM_DIR . && sudo zip -n .gz $OLDPWD/$ONIE_INSTALLER_PAYLOAD -r boot/ platform.tar.gz; popd
 sudo zip -g -n .squashfs:.gz $ONIE_INSTALLER_PAYLOAD $FILESYSTEM_SQUASHFS $FILESYSTEM_DOCKERFS

build_docker.sh

@@ -101,7 +101,8 @@ fi
 
 ## Save the docker image in a gz file
 mkdir -p target
-docker save $docker_image_name | gzip -c > target/$docker_image_name.gz
+command -v pigz > /dev/null && GZ_COMPRESS_PROGRAM=pigz || GZ_COMPRESS_PROGRAM=gzip
+docker save $docker_image_name | $GZ_COMPRESS_PROGRAM -c > target/$docker_image_name.gz
 
 if [ -n "$1" ]; then
     ./push_docker.sh target/$docker_image_name.gz $@ $docker_image_tag

build_image.sh

@@ -56,10 +56,10 @@ generate_kvm_image()
         exit 1
     }
 
-    gzip $KVM_IMAGE_DISK
+    $GZ_COMPRESS_PROGRAM $KVM_IMAGE_DISK
 
     [ -r $KVM_IMAGE_DISK.gz ] || {
-        echo "Error : gzip $KVM_IMAGE_DISK failed!"
+        echo "Error : $GZ_COMPRESS_PROGRAM $KVM_IMAGE_DISK failed!"
         exit 1
     }
 
@@ -147,10 +147,10 @@ elif [ "$IMAGE_TYPE" = "raw" ]; then
         exit 1
     }
 
-    gzip $OUTPUT_RAW_IMAGE
+    $GZ_COMPRESS_PROGRAM $OUTPUT_RAW_IMAGE
 
     [ -r $OUTPUT_RAW_IMAGE.gz ] || {
-        echo "Error : gzip $OUTPUT_RAW_IMAGE failed!"
+        echo "Error : $GZ_COMPRESS_PROGRAM $OUTPUT_RAW_IMAGE failed!"
         exit 1
     }
 

rules/config

@@ -275,3 +275,7 @@ ENABLE_FIPS ?= n
 
 # SONIC_SLAVE_DOCKER_DRIVER - set the sonic slave docker storage driver
 SONIC_SLAVE_DOCKER_DRIVER ?= vfs
+
+# GZ_COMPRESS_PROGRAM - select pigz (a parallel implementation of gzip) to reduce a build time
+# and speed up a decompression of docker images on target system
+GZ_COMPRESS_PROGRAM ?= gzip

slave.mk

@@ -86,6 +86,7 @@ export DOCKER_BASE_ARCH
 export CROSS_BUILD_ENVIRON
 export BLDENV
 export BUILD_WORKDIR
+export GZ_COMPRESS_PROGRAM
 
 ###############################################################################
 ## Utility rules
@@ -431,6 +432,7 @@ ifeq ($(CONFIGURED_PLATFORM),vs)
 $(info "BUILD_MULTIASIC_KVM"             : "$(BUILD_MULTIASIC_KVM)")
 endif
 $(info "CROSS_BUILD_ENVIRON"             : "$(CROSS_BUILD_ENVIRON)")
+$(info "GZ_COMPRESS_PROGRAM"             : "$(GZ_COMPRESS_PROGRAM)")
 $(info )
 else
 $(info SONiC Build System for $(CONFIGURED_PLATFORM):$(CONFIGURED_ARCH))
@@ -489,7 +491,7 @@ define docker-image-save
     @echo "Tagging docker image $(1)-$(DOCKER_USERNAME):$(DOCKER_USERTAG) as $(1):$(call docker-get-tag,$(1))" $(LOG)
     docker tag $(1)-$(DOCKER_USERNAME):$(DOCKER_USERTAG) $(1):$(call docker-get-tag,$(1)) $(LOG)
     @echo "Saving docker image $(1):$(call docker-get-tag,$(1))" $(LOG)
-        docker save $(1):$(call docker-get-tag,$(1)) | gzip -c > $(2)
+        docker save $(1):$(call docker-get-tag,$(1)) | $(GZ_COMPRESS_PROGRAM) -c > $(2)
     if [ x$(SONIC_CONFIG_USE_NATIVE_DOCKERD_FOR_BUILD) == x"y" ]; then
         @echo "Removing docker image $(1):$(call docker-get-tag,$(1))" $(LOG)
         docker rmi -f $(1):$(call docker-get-tag,$(1)) $(LOG)

sonic-slave-bullseye/Dockerfile.j2

@@ -87,6 +87,7 @@ RUN apt-get update && apt-get install -y \
         curl \
         wget \
         unzip \
+        {{ GZ_COMPRESS_PROGRAM }} \
         git \
         build-essential \
         libtool \

sonic-slave-buster/Dockerfile.j2

@@ -89,6 +89,7 @@ RUN apt-get update && apt-get install -y \
         curl \
         wget \
         unzip \
+        {{ GZ_COMPRESS_PROGRAM }} \
         git \
         build-essential \
         libtool \

sonic-slave-stretch/Dockerfile.j2

@@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y \
         curl \
         wget \
         unzip \
+        {{ GZ_COMPRESS_PROGRAM }} \
         git \
         build-essential \
         libtool \