diff --git a/README.md b/README.md
index 8a1a74e..b8cde14 100644
--- a/README.md
+++ b/README.md
@@ -44,3 +44,11 @@ sudo docker run -t -i \
 ```
 sudo ./scripts/xp1 1000 100 100
 ```
+
+## Run instances in parallel
+
+```
+parallel -j 30 bash -c "./scripts/xp1 1000 100 100" -- `seq 1 1000`
+parallel -j 10 bash -c "./xp1 6000 100 100" -- `seq 1 100`
+```
+
diff --git a/scripts/xp1 b/scripts/xp1
index 78945d4..e36125a 100755
--- a/scripts/xp1
+++ b/scripts/xp1
@@ -6,8 +6,12 @@ mkdir -p $XP_FOLDER
 cd $XP_FOLDER
 
 # Create folders
-mkdir -p ./{shared,log,res}
-chown -R 1000 ./{shared,log,res}
+docker run \
+  --rm \
+  -ti \
+  -v `pwd`:/mnt \
+  ubuntu \
+  bash -c "cd /mnt; mkdir -p ./{shared,log,res}; chown -R 1000 ./{shared,log,res}"
 
 # Run server
 docker run \
@@ -32,3 +36,4 @@ docker run \
 
 # Kill server
 kill %1
+