use G1GC to reduce memory consumption.

src/main/scripts/unix/unimelb-mf-check

@@ -25,4 +25,4 @@ JAR=${LIB}/unimelb-mf-clients.jar
 [[ -z $(which java) ]] && echo "Java is not found." >&2 && exit 1
 
 # execute the command
-java -Xmx1024m -cp "${JAR}" unimelb.mf.client.sync.cli.MFCheck ${1+"$@"}
+java -XX:+UseG1GC -XX:+UseStringDeduplication -Xms512m -Xmx1g -cp "${JAR}" unimelb.mf.client.sync.cli.MFCheck ${1+"$@"}

src/main/scripts/unix/unimelb-mf-download

@@ -25,4 +25,4 @@ JAR=${LIB}/unimelb-mf-clients.jar
 [[ -z $(which java) ]] && echo "Java is not found." >&2 && exit 1
 
 # execute the command
-java -Xmx200m -cp "${JAR}" unimelb.mf.client.sync.cli.MFDownload ${1+"$@"}
+java -XX:+UseG1GC -XX:+UseStringDeduplication -Xms512m -Xmx1g -cp "${JAR}" unimelb.mf.client.sync.cli.MFDownload ${1+"$@"}

src/main/scripts/unix/unimelb-mf-instrument-upload

@@ -25,4 +25,4 @@ JAR=${LIB}/unimelb-mf-clients.jar
 [[ -z $(which java) ]] && echo "Java is not found." >&2 && exit 1
 
 # execute the command
-java -Xmx1024m -cp "${JAR}" unimelb.mf.client.sync.cli.MFInstrumentUpload ${1+"$@"}
+java -XX:+UseG1GC -XX:+UseStringDeduplication -Xms512m -Xmx1g -cp "${JAR}" unimelb.mf.client.sync.cli.MFInstrumentUpload ${1+"$@"}

src/main/scripts/unix/unimelb-mf-upload

@@ -25,4 +25,4 @@ JAR=${LIB}/unimelb-mf-clients.jar
 [[ -z $(which java) ]] && echo "Java is not found." >&2 && exit 1
 
 # execute the command
-java -Xmx1024m -cp "${JAR}" unimelb.mf.client.sync.cli.MFUpload ${1+"$@"}
+java -XX:+UseG1GC -XX:+UseStringDeduplication -Xms512m -Xmx1g -cp "${JAR}" unimelb.mf.client.sync.cli.MFUpload ${1+"$@"}

src/main/scripts/windows/unimelb-mf-check.cmd

@@ -9,4 +9,4 @@ popd
 
 set JAR=%ROOT%\lib\unimelb-mf-clients.jar
 
-java -Xmx1024m -cp "%JAR%" unimelb.mf.client.sync.cli.MFCheck %*
+java -XX:+UseG1GC -XX:+UseStringDeduplication -Xms512m -Xmx1g -cp "%JAR%" unimelb.mf.client.sync.cli.MFCheck %*

src/main/scripts/windows/unimelb-mf-download.cmd

@@ -8,4 +8,4 @@ popd
 @REM set PATH=%JAVA_HOME%\bin;%PATH%
 
 set JAR=%ROOT%\lib\unimelb-mf-clients.jar
-java -Xmx200m -cp "%JAR%" unimelb.mf.client.sync.cli.MFDownload %*
+java -XX:+UseG1GC -XX:+UseStringDeduplication -Xms512m -Xmx1g -cp "%JAR%" unimelb.mf.client.sync.cli.MFDownload %*

src/main/scripts/windows/unimelb-mf-instrument-upload.cmd

@@ -9,4 +9,4 @@ popd
 
 set JAR=%ROOT%\lib\unimelb-mf-clients.jar
 
-java -Xmx1024m -cp "%JAR%" unimelb.mf.client.sync.cli.MFInstrumentUpload %*
+java -XX:+UseG1GC -XX:+UseStringDeduplication -Xms512m -Xmx1g -cp "%JAR%" unimelb.mf.client.sync.cli.MFInstrumentUpload %*

src/main/scripts/windows/unimelb-mf-upload.cmd

@@ -9,4 +9,4 @@ popd
 
 set JAR=%ROOT%\lib\unimelb-mf-clients.jar
 
-java -Xmx1024m -cp "%JAR%" unimelb.mf.client.sync.cli.MFUpload %*
+java -XX:+UseG1GC -XX:+UseStringDeduplication -Xms512m -Xmx1g -cp "%JAR%" unimelb.mf.client.sync.cli.MFUpload %*