X-Git-Url: http://git.iain.cx/?a=blobdiff_plain;f=README.md;fp=README.md;h=1b4fdc9760fbed6a4f8bc07065b10696290964db;hb=19c8ae094d0914226a3fcd75576d39528828dace;hp=097450a958abfd66e880571f84af6fc5c7955aa0;hpb=24183433de0c5d606a4fc1d9f90df0608547bf78;p=pstop.git

diff --git a/README.md b/README.md
index 097450a..1b4fdc9 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,14 @@ The port if not specified will default to 3306.
 `pstop` needs `SELECT` access to `performance_schema` tables. It
 will not run if access to the required tables is not available.
 
+setup_instruments: To view the Mutex page it is likely you will need
+to change the configuration of setup_instruments. pstop needs UPDATE
+rights on this table to do that. If the pstop user does not have
+this right then the configuration will not be modified and you may see
+no data.  When pstop stops it will restore the setup_instruments
+configuration back to its original settings if it successfully
+updated the table when starting up.
+
 ### Screens
 
 pstop has 5 different screens which get updated by default every second.