diff --git a/conf/init.zumapro.board.rc b/conf/init.zumapro.board.rc
index 8cdd334..e46f86f 100644
--- a/conf/init.zumapro.board.rc
+++ b/conf/init.zumapro.board.rc
@@ -84,6 +84,9 @@ on init
     write /sys/block/zram0/comp_algorithm lz77eh
     write /proc/sys/vm/page-cluster 0
 
+    # adjust PCP high level
+    write /proc/sys/vm/percpu_pagelist_high_fraction 430
+
     # disable proactive compaction
     write /proc/sys/vm/compaction_proactiveness 0