diff --git a/rootdir/init.rc b/rootdir/init.rc
index aff37741d..8a82077be 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -1190,10 +1190,12 @@ on boot
     # to avoid power consumption when system becomes mostly idle. Be careful
     # to make it too large, since it may bring userdata loss, if they
     # are not aware of using fsync()/sync() to prepare sudden power-cut.
-    write /dev/sys/fs/by-name/userdata/cp_interval 200
-    write /dev/sys/fs/by-name/userdata/gc_urgent_sleep_time 50
+    write /dev/sys/fs/by-name/userdata/cp_interval 6000
+    write /dev/sys/fs/by-name/userdata/gc_urgent_sleep_time 200
     write /dev/sys/fs/by-name/userdata/iostat_period_ms 1000
     write /dev/sys/fs/by-name/userdata/iostat_enable 0
+    write /proc/sys/vm/dirty_expire_centisecs 3000
+    write /proc/sys/vm/dirty_background_ratio  10
 
     # set readahead multiplier for POSIX_FADV_SEQUENTIAL files
     write /dev/sys/fs/by-name/userdata/seq_file_ra_mul 128