Skip to content

Voxer/node-corevis

master
Switch branches/tags
Code

Latest commit

 

Git stats

Files

Permalink
Failed to load latest commit information.
Type
Name
Latest commit message
Commit time
 
 
 
 
lib
 
 
 
 
 
 
 
 
 
 

corevis

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

Installation

[sudo] npm install -g corevis

Usage

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...

CLI Usage

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

License

MIT License

About

Generate HTML based on information gathered with mdb(1) from a node.js core dump

Resources

Stars

Watchers

Forks

Packages

No packages published