diff --git a/manifests/executor.pp b/manifests/executor.pp
index df33d44..8a52d6f 100644
--- a/manifests/executor.pp
+++ b/manifests/executor.pp
@@ -33,6 +33,13 @@ class zuul::executor (
     ],
   }
 
+  # Alternative malloc implementation with better packing performance
+  if ! defined(Package['libjemalloc1']) {
+    package { 'libjemalloc1':
+      ensure => present,
+    }
+  }
+
   include ::pip::python3
 
   exec { 'install-ara-safely':
diff --git a/manifests/init.pp b/manifests/init.pp
index e627d83..de99bad 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -503,7 +503,7 @@ class zuul (
     file { '/etc/default/zuul-executor':
       ensure  => present,
       mode    => '0444',
-      content => "PIDFILE=/var/run/zuul/executor.pid\n",
+      content => "PIDFILE=/var/run/zuul/executor.pid\nexport LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libjemalloc.so.1\n",
     }
 
     file { '/etc/default/zuul-scheduler':