From c679ef22367853a7b1df70a0a26f07c702dc7f60 Mon Sep 17 00:00:00 2001
From: Bart Van Assche <bvanassche@google.com>
Date: Tue, 23 Jan 2024 09:54:19 -0800
Subject: [PATCH] init.hardware.rc: Restore I/O performance

As one can see in cfq_arm_slice_timer(), the CFQ I/O scheduler supports
two parameters that can make it delay I/O: group_idle and slice_idle.
Restore I/O performance by setting both the group_idle and slice_idle
parameters to zero.

Bug: 213617178
Bug: 313578691
Change-Id: I02429876790a6456ca957ff7c38f0c8bf88127f9
Signed-off-by: Bart Van Assche <bvanassche@google.com>
---
 init.hardware.rc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/init.hardware.rc b/init.hardware.rc
index 669c8ddd..888e31ce 100644
--- a/init.hardware.rc
+++ b/init.hardware.rc
@@ -81,6 +81,7 @@ on init && property:vendor.skip.init=0
     # Boot time fs tuning
     write /sys/block/sda/queue/iostats 0
     write /sys/block/sda/queue/scheduler cfq
+    write /sys/block/sda/queue/iosched/group_idle 0
     write /sys/block/sda/queue/iosched/slice_idle 0
     write /sys/block/sda/queue/nr_requests 256