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Generate HTML based on information gathered with mdb(1)
from
a node.js core dump
Example: http://us-east.manta.joyent.com/devops@voxer.com/public/corevis/example.html
[sudo] npm install -g corevis
At Voxer, we use commands similar to the ones below to ensure that all core dumps go to a specific directory
mkdir /core
coreadm -g /core/core.%f.%p -G all -e global -d process -e global-setid -d proc-setid -I all -e log
Run any of the examples to generate a core dump, then use corevis
to make an HTML file with analysis.
[root@test1 ~/node-corevis]# node examples/big-objects.js
pid 9986
Abort (core dumped)
[root@test1 ~/node-corevis]# ./corevis.js /core/core.node.9986 > example.html
> loading /core/core.node.9986... 147ms
> getting status... 896ms
> loading v8... 66ms
> getting stack trace... 37ms
> finding jsobjects (this can take a while)... 13585ms
> calling ::jsprint -a on all objects found... 21975ms
> analyzing data... 631ms
> loading assets... 15ms
> generating HTML... 167ms
> killing mdb... 10ms
> done. took 37.53 seconds...
Usage: corevis [options] <node coredump>
Generate HTML based on information gathered with mdb(1) from
a node.js core dump
Examples
$ corevis core.node.1234 > vis.html
$ corevis --load /var/tmp/v8-new.so core.node.1234 > vis.html
Options
-h, --help print this message and exit
-l, --load <v8> argument to pass to `::load` in mdb(1), defaults to "v8"
-u, --updates check npm for available updates to this program
-v, --version print the version number and exit
MIT License
FAQs
Visualize Node.JS coredumps with HTML using mdb(1)
We found that corevis demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 4 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
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