profiling-on-linux-jonathan-lambrechts.md

@@ -6,6 +6,8 @@
 
 ``` GOPATH=$HOME/go go get github.com/google/pprof```  
 
+Be careful, an error may occur `undefined os.UserConfigDir`. In this case, you will have to update the go version or use an older version of pprof.  
+  
 ## Profile the ./myexe
 ```LD_PRELOAD=/usr/lib/libprofiler.so CPUPROFILE=prof ./myexe```