X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=README;h=635f9c1b482a2854788866a20acefee375c68c28;hb=95259bd064ee3ad76689c379daf21e7156b5494e;hp=3d7e18e3de27f59a124de7ecbf0a9d4f64f5ec9c;hpb=5e96a46756a5dcd6e348afd84078b9e26438245d;p=lttng-ust.git

diff --git a/README b/README
index 3d7e18e3..635f9c1b 100644
--- a/README
+++ b/README
@@ -45,10 +45,18 @@ USAGE:
   - Link application with -lust.
   - (TODO: start tracing with the "lttng" command from lttng-tools)
 
-  Note: libust debug can be activated by either of the following means:
-    - Setting the environment variable "UST_DEBUG" when launching the
-      application.
-    - Compiling libust with -DUST_DEBUG.
+ENVIRONMENT VARIABLES:
+
+  - libust debug can be activated by setting the environment variable
+    "UST_DEBUG" when launching the application. It can also be enabled
+    at compile-time by compiling libust with -DUST_DEBUG.
+
+  - The environment variable "UST_REGISTER_TIMEOUT" can be used to
+    specify how long the applications should wait for sessiond
+    "registration done" command before proceeding to execute the main
+    program. The default is 3000ms (3 seconds). The timeout value is
+    specified in milliseconds. The value 0 means "don't wait". The value
+    -1 means "wait forever".
 
 
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