diff --git a/compression/compress_graph.sh b/compression/compress_graph.sh
index 211aaab..f0c4635 100755
--- a/compression/compress_graph.sh
+++ b/compression/compress_graph.sh
@@ -1,57 +1,61 @@
 #!/bin/bash
 
 if [ "$#" -ne 2 ]; then
     echo "Expected two arguments: <input graph> <output dir>"
     exit -1
 fi
 
 INPUT_GRAPH=$1
 OUTPUT_DIR=$2
 DATASET=$(basename $INPUT_GRAPH)
 COMPR_GRAPH="$OUTPUT_DIR/$DATASET"
 
 java_cmd () {
-    /usr/bin/time -v java -Xmx1024G -cp /app/'*' $*
+    /usr/bin/time -v java                                                   \
+        -Xmx1024G -server -XX:PretenureSizeThreshold=512M -XX:MaxNewSize=4G \
+        -XX:+UseLargePages -XX:+UseTransparentHugePages -XX:+UseNUMA        \
+        -XX:+UseTLAB -XX:+ResizeTLAB                                        \
+        -cp /app/'*' $*
 }
 
 llp_ordering () {
     # Create a symmetrized version of the graph
     # (output: .{graph,offsets,properties})
     java_cmd it.unimi.dsi.big.webgraph.Transform symmetrizeOffline \
         $COMPR_GRAPH-bv $COMPR_GRAPH-bv-sym
     java_cmd it.unimi.dsi.big.webgraph.BVGraph --list $COMPR_GRAPH-bv-sym
 
     # Find a better permutation through Layered LPA
     # WARNING: no 64-bit version of LLP
     java_cmd it.unimi.dsi.law.graph.LayeredLabelPropagation \
         --longs $COMPR_GRAPH-bv-sym $COMPR_GRAPH.order
 }
 
 bfs_ordering () {
     java_cmd it.unimi.dsi.law.graph.BFS $COMPR_GRAPH-bv $COMPR_GRAPH.order
 }
 
 mkdir -p $OUTPUT_DIR
 
 # Build a function (MPH) that maps node names to node numbers in lexicographic
 # order (output: .mph)
 java_cmd it.unimi.dsi.sux4j.mph.GOVMinimalPerfectHashFunction \
     --zipped $COMPR_GRAPH.mph $INPUT_GRAPH.nodes.csv.gz
 
 # Build the graph in BVGraph format (output: .{graph,offsets,properties})
 java_cmd it.unimi.dsi.big.webgraph.ScatteredArcsASCIIGraph  \
     --function $COMPR_GRAPH.mph                         \
     --zipped $COMPR_GRAPH-bv < $INPUT_GRAPH.edges.csv.gz
 # Build the offset big-list file to load the graph faster (output: .obl)
 java_cmd it.unimi.dsi.big.webgraph.BVGraph --list $COMPR_GRAPH-bv
 
 # Find a better permutation
 bfs_ordering
 
 # Permute the graph accordingly
 java_cmd it.unimi.dsi.big.webgraph.Transform mapOffline \
     $COMPR_GRAPH-bv $COMPR_GRAPH $COMPR_GRAPH.order
 java_cmd it.unimi.dsi.big.webgraph.BVGraph --list $COMPR_GRAPH
 
 # Compute graph statistics (output: .{indegree,outdegree,stats})
 java_cmd it.unimi.dsi.big.webgraph.Stats $COMPR_GRAPH