doc: add multiple build guide to benchmarking doc

PR-URL: https://github.com/nodejs/node/pull/16142
Reviewed-By: Anatoli Papirovski <apapirovski@mac.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
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Peter Marton 2017-10-11 10:15:49 +02:00 committed by Anatoli Papirovski
parent 5118f31466
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@ -164,6 +164,19 @@ First build two versions of Node.js, one from the master branch (here called
`./node-master`) and another with the pull request applied (here called
`./node-pr-5134`).
To run multiple compiled versions in parallel you need to copy the output of the
build: `cp ./out/Release/node ./node-master`. Check out the following example:
```console
$ git checkout master
$ ./configure && make -j4
$ cp ./out/Release/node ./node-master
$ git checkout pr-5134
$ ./configure && make -j4
$ cp ./out/Release/node ./node-pr-5134
```
The `compare.js` tool will then produce a csv file with the benchmark results.
```console