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kevlar's Introduction

kevlar

Synthetic load generation.

Installation

npm install kevlar

Running

kevlar reads a list of paths from STDIN and resolves them against a target URL (--target) before making HEAD requests.

This means that you can use a static list of paths as a source of load:

cat paths.txt | kevlar -t http://example.com

Or, you can use a dynamic list of paths, in this case processed from a remote syslog stream:

curl -s http://source.example.com | \
grep path | \
perl -pe 's/^.+GET (\/[^\/]+\/[\w\/\.]+).+$/\1/' \
kevlar -t http://example.com

If you see EMFILE errors, kevlar's intended concurrency is being limited by the number of available file descriptors (often 256 by default). To increase the limit, use:

ulimit -n 1024

Notes

kevlar currently makes HEAD requests by default (use -X option to change the method) in order to reduce bandwidth utilization (with the knowledge that in this case the target will perform all necessary work in response).

kevlar's People

Contributors

mojodna avatar javisantana avatar

Stargazers

Raul Ochoa avatar Lorenzo Planas avatar

Watchers

 avatar Eric Gelinas avatar Chris Henrick avatar Eric Brelsford avatar Eric Rodenbeck avatar Sean Connelley avatar Logan Williams avatar Emily Hobson avatar James Cloos avatar Alan McConchie avatar Dan Rademacher avatar  avatar  avatar Heather Grates avatar  avatar  avatar  avatar  avatar  avatar  avatar  avatar

Forkers

javisantana

kevlar's Issues

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