Mention how to disable CPU frequency scaling while running the benchmark. (#466)
Describe how to use the cpupower command to disable CPU frequency scaling.
Document this, since there are other ways that don't see to have the same
effect. See #325
diff --git a/README.md b/README.md
index 6eb63f2..6720909 100644
--- a/README.md
+++ b/README.md
@@ -835,6 +835,18 @@
Note: Using the library and its headers in C++03 is supported. C++11 is only
required to build the library.
+## Disable CPU frequency scaling
+If you see this error:
+```
+***WARNING*** CPU scaling is enabled, the benchmark real time measurements may be noisy and will incur extra overhead.
+```
+you might want to disable the CPU frequency scaling while running the benchmark:
+```bash
+sudo cpupower frequency-set --governor performance
+./mybench
+sudo cpupower frequency-set --governor powersave
+```
+
# Known Issues
### Windows
