diff --git a/999.tarballs.build b/999.tarballs.build
index a25a4c2..7ff794a 100644
--- a/999.tarballs.build
+++ b/999.tarballs.build
@@ -10,11 +10,20 @@ else
 	update_build_status build_finish tarball_start;
 	cd ${PREFIX};
 	if [ "${TARBALL_SUFFIX}" = "bz2" ]; then
-		TARBALL_COMPRESS_CMD="bzip2";
+		if [ -n "$(which pbzip2 2>/dev/null)" ]; then
+			TARBALL_COMPRESS_CMD="pbzip2";
+		else
+			TARBALL_COMPRESS_CMD="bzip2";
+		fi;
 	elif [ "${TARBALL_SUFFIX}" = "gz" ]; then
-		TARBALL_COMPRESS_CMD="gzip";
+		if [ -n "$(which pigz 2>/dev/null)" ]; then
+			TARBALL_COMPRESS_CMD="pigz";
+		else
+			TARBALL_COMPRESS_CMD="gzip";
+		fi;
 	elif [ "${TARBALL_SUFFIX}" = "xz" ]; then
 		TARBALL_COMPRESS_CMD="xz";
+		TARBALL_COMPRESS_ARGS="-T0";
 	else
 		log_msg failexit "Unknown tarball suffix \`.${TARBALL_SUFFIX}'.";
 	fi;
@@ -35,7 +44,7 @@ log_msg info "Converted symbolic links in ${PREFIX_BASENAME}/lib to hard links."
 tar -cpf - $(find_with_no_paths "${TARBALL_EXCLUDE_PATHS} native/lib.bak" .	\
 		-mindepth 1 -maxdepth 2 -type d -not -path ./native)		\
 	"Create \`Midipix mintty shell' shortcut.vbs" midipix.sh README		|\
-${TARBALL_COMPRESS_CMD} -c > ${TARBALL_FNAME};
+${TARBALL_COMPRESS_CMD} ${TARBALL_COMPRESS_ARGS} -c > ${TARBALL_FNAME};
 log_msg info "Finished building binary distribution tarball.";
 if [ -x "$(which gpg 2>/dev/null)" -a -n "${TARBALL_SIGN_GPG_KEY}" ] &&\
 			gpg --list-keys "${TARBALL_SIGN_GPG_KEY}" >/dev/null 2>&1; then
@@ -49,7 +58,7 @@ log_msg info "Restored ${PREFIX_BASENAME}/lib.";
 
 log_msg info "Building source tarball...";
 tar -cpf - $(find tmp -mindepth 1 -maxdepth 1 -type d)				|\
-${TARBALL_COMPRESS_CMD} -c > ${TARBALL_SRC_FNAME};
+${TARBALL_COMPRESS_CMD} ${TARBALL_COMPRESS_ARGS} -c > ${TARBALL_SRC_FNAME};
 log_msg info "Finished building source tarball.";
 if [ -x "$(which gpg 2>/dev/null)" -a -n "${TARBALL_SRC_SIGN_GPG_KEY}" ] &&\
 			gpg --list-keys "${TARBALL_SRC_SIGN_GPG_KEY}" >/dev/null 2>&1; then