diff --git a/rootdir/etc/init.qcom.rc b/rootdir/etc/init.qcom.rc
index 160cfa8..9c6dcd0 100644
--- a/rootdir/etc/init.qcom.rc
+++ b/rootdir/etc/init.qcom.rc
@@ -117,6 +117,9 @@ on boot
     # Create hvdcp_opti directory
     mkdir /mnt/vendor/persist/hvdcp_opti 0770 root system
 
+    # limit discard size to 128MB in order to avoid long IO latency
+    write /sys/block/sda/queue/discard_max_bytes 134217728
+
     # Enable qcrild and data services
     enable vendor.qcrild
     enable vendor.qcrild2