From 94262269de06cea98205e41748ee628b6219ed50 Mon Sep 17 00:00:00 2001
From: Vishal Verma <vishal4.verma@intel.com>
Date: Wed, 9 Aug 2017 09:32:27 -0700
Subject: [PATCH] test/blobfs: add 'drop_cache' in run_tests script

This adds support for cleaning page caches between each of the
db_bench test within run_test.sh script.

Change-Id: Ibcf37945d530a7a940d4a6365e3f1a9eeffb26c0
Signed-off-by: Vishal Verma <vishal4.verma@intel.com>
Reviewed-on: https://review.gerrithub.io/373631
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
---
 test/blobfs/rocksdb/run_tests.sh | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/test/blobfs/rocksdb/run_tests.sh b/test/blobfs/rocksdb/run_tests.sh
index b4c5f19cd..a110e934f 100755
--- a/test/blobfs/rocksdb/run_tests.sh
+++ b/test/blobfs/rocksdb/run_tests.sh
@@ -148,6 +148,7 @@ run_step() {
 
 	if [ "$NO_SPDK" = "1" ]
 	then
+	  drop_caches
 	  cat /sys/block/nvme0n1/stat >> "$1"_blockdev_stats.txt
 	fi
 
@@ -161,6 +162,12 @@ run_step() {
 	fi
 }
 
+drop_caches() {
+	echo -n Cleaning Page Cache...
+	echo 3 > /proc/sys/vm/drop_caches
+	echo done.
+}
+
 if [ -z "$SKIP_INSERT" ]
 then
 	run_step insert