diff --git a/build/envsetup.sh b/build/envsetup.sh
index 2fcd173f..9297b58d 100644
--- a/build/envsetup.sh
+++ b/build/envsetup.sh
@@ -678,7 +678,7 @@ function mka() {
                 make -C $T -j `sysctl hw.ncpu|cut -d" " -f2` "$@"
                 ;;
             *)
-                mk_timer schedtool -B -n 1 -e ionice -n 1 make -C $T -j$(cat /proc/cpuinfo | grep "^processor" | wc -l) "$@"
+                mk_timer schedtool -B -n 10 -e ionice -n 7 make -C $T -j$(cat /proc/cpuinfo | grep "^processor" | wc -l) "$@"
                 ;;
         esac