diff --git a/capsulflask/metrics.py b/capsulflask/metrics.py
index 9b6d99f..3a34a64 100644
--- a/capsulflask/metrics.py
+++ b/capsulflask/metrics.py
@@ -97,7 +97,7 @@ def get_plot_bytes(metric, capsulid, duration, size):
     memory=vm["memory_mb"]*1024*1024,
     network_in=1024*1024*2,
     network_out=1024*200,
-    disk=1024*1024*4,
+    disk=1024*1024*8,
   )
 
   if metric not in metric_queries:
@@ -212,6 +212,9 @@ def draw_plot_png_bytes(data, scale, size_x=3, size_y=1):
 
   image_binary = BytesIO()
   fig.savefig(image_binary, transparent=True, bbox_inches="tight", pad_inches=0.05)
+
+  pyplot.close('all')
+
   return image_binary.getvalue()