diff --git a/rootdir/init.rc b/rootdir/init.rc
index 4e2335412..0ac669803 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -87,10 +87,17 @@ on init
     write /proc/sys/kernel/panic_on_oops 1
     write /proc/sys/kernel/hung_task_timeout_secs 0
     write /proc/cpu/alignment 4
+
+    # scheduler tunables
+    # Disable auto-scaling of scheduler tunables with hotplug. The tunables
+    # will vary across devices in unpredictable ways if allowed to scale with
+    # cpu cores.
+    write /proc/sys/kernel/sched_tunable_scaling 0
     write /proc/sys/kernel/sched_latency_ns 10000000
     write /proc/sys/kernel/sched_wakeup_granularity_ns 2000000
     write /proc/sys/kernel/sched_compat_yield 1
     write /proc/sys/kernel/sched_child_runs_first 0
+
     write /proc/sys/kernel/randomize_va_space 2
     write /proc/sys/kernel/kptr_restrict 2
     write /proc/sys/vm/mmap_min_addr 32768