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CpuLimit

An oxidized version of the original cpulimit, a utility to limit the CPU usage of a process.

Design

This crate implements user-space scheduling: after each time slice (currently 100 ms), cpulimit wakes up and parses the /proc/<pid>/stat file to check how long the target process ran. It then sends the SIGSTOP and SIGCONT signals to suspend and resume execution in order to obtain the desired CPU usage.

The project is divided into two Cargo workspace members:

  • cpulimiter - a library implementing the functionality
  • cpulimit - the executable

Limitations

  • only supports Linux-based operating systems.
  • only single-threaded processes are currently supported.
  • the time slice is not configurable yet.

License

Developed at TEHTRIS by Fabien Savy.

Distributed under the terms of the GNU Lesser General Public License (LGPL), Version 3.0 (the "License"). You may obtain a copy of the License at http://www.gnu.org/licenses/lgpl-3.0.txt.

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

See the License for the specific language governing permissions and limitations under the License.