--- wikisrc/pkgsrc/hardening.mdwn	2016/03/17 03:51:51	1.6
+++ wikisrc/pkgsrc/hardening.mdwn	2016/03/17 13:27:17	1.7
@@ -71,6 +71,20 @@ Just like with `PKGSRC_MKPIE` above, thi
 crash, usually indicating an actual bug in the program. The fix will typically
 involve patching the original program.
 
+## Problems with `PKGSRC_USE_RELRO`
+
+### Performance impact
+
+For better protection, full RELRO requires every symbol to be resolved when the
+program starts, rather than lazily at run-time. This will have more impact on
+programs using a lot of symbols, or linked to libraries exposing a lot of
+symbols. Therefore, daemons or programs otherwise running in background are
+affected only when started. Programs loading plug-ins at run-time are affected
+when loading the plug-ins.
+
+The impact is not expected to be noticeable on modern hardware, except in some
+cases for big programs.
+
 ## Problems with `PKGSRC_USE_SSP`
 
 ### Packages failing to build