diff --git a/Performance.md b/Performance.md
index 9b01b73..920d881 100644
--- a/Performance.md
+++ b/Performance.md
@@ -30,6 +30,10 @@ storage nodes are local) takes 46s for 100 1kB files and 369s for 1000 files.
 Small files seem to be limited by a per-file overhead. Large files are limited
 by the link speed.
 
+The munin
+[/tahoe-figleaf-graph/hanford.allmydata.com-tahoe_speedstats_delay.html delay graph] and
+[/tahoe-figleaf-graph/hanford.allmydata.com-tahoe_speedstats_rate.html rate graph] show these Ax+B numbers for a node in colo and a node behind a DSL line.
+
 ### Roundtrips
 
 The 0.5.1 release requires about 9 roundtrips for each share it uploads. The