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8121530144
On Python 2.x, operations on pthread objects with a timeout set actually cause internal polling. When polling fails to yield a positive result, it quickly backs off to a 50ms loop, which results in a huge amount of latency throughout. Instead, give up using Queue.Queue.get(timeout=...) and replace it with the UNIX self-pipe trick. Knocks another 45% off my.yml in the Ansible examples directory against a local VM. This has the potential to burn a *lot* of file descriptors, but hell, it's not the 1940s any more, RAM is all but infinite. I can live with that. This gets things down to around 75ms per playbook step, still hunting for additional sources of latency. |
8 years ago | |
|---|---|---|
| ansible_mitogen | ||
| docs | ||
| examples | ||
| mitogen | ||
| tests | ||
| .gitignore | ||
| .travis.yml | ||
| LICENSE | ||
| README.md | ||
| dev_requirements.txt | ||
| preamble_size.py | ||
| setup.py | ||
| test.sh | ||
README.md
Running The Tests
Your computer should have an Internet connection, and the docker command
line tool should be able to connect to a working Docker daemon (localhost or
elsewhere for OS X etc.) that can run new images.
The IP address of the Docker daemon must allow exposing ports from running containers, e.g. it should not be firewalled or port forwarded.
If in doubt, just install Docker on a Linux box in the default configuration and run the tests there.
Steps To Prepare Development Environment
- Get the code
git clone https://github.com/dw/mitogen.git - Go into the working directory
cd mitogen - Establish the docker image
./tests/build_docker_image.py - Build the virtual environment
virtualenv ../venv - Enable the virtual environment we just built
source ../venv/bin/activate - Install Mitogen in pip editable mode
pip install -e . - Run
test.sh