github-repos/benchmark
1
0
Fork 0
mirror of https://github.com/google/benchmark.git synced 2025-03-14 03:10:22 +08:00
Code Issues Packages Projects Releases Wiki Activity

Mention how to disable CPU frequency scaling while running the benchmark. (#466)

Browse Source 
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
This commit is contained in:
Stefan Sauer 2017-11-02 16:34:06 +01:00 committed by Dominic Hamon
parent fa341e51cb
commit 4463a60efe
1 changed files with 12 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
README.md
View File

@ -835,6 +835,18 @@ Anything older *may* work.
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