Update readme and import stress rpm

Author: jeremyeder

README.md

@@ -16,8 +16,21 @@ centos              centos7             1a7dc42f78ba        2 weeks ago
 # /root/docker-performance/bench/sysbench/run-sysbench.sh cpu test1
 # cat /results/*histogram
 
+# docker run --cpuset=1 --memory=1G -it r7perf bash
+# yum install ~/docker-performance/utils/stress*
+
+# cd /var/lib/docker/execdriver/native/X
+# watch -n1 -d 'nsinit stats | egrep -A2 'usage'"
+# free -m -s 1
+
+# stress -c 1 -m 1 --vm-bytes 1G
+# stress -c 1 -m 1 --vm-bytes 2G
+
+Reference:
 ...
 # cat /etc/hostname
 2bf50285b249
 # chcon --reference /var/lib/docker/devicemapper/mnt/2bf50285b249d1513c5481a992b12495fc8e8e0d3fdf2b2345b760c5fd675db1 /results
+
+PR5910
 ```