An all-in-one Go program to capture perf record FlameGraphs via a
web browser. Meant to run as root on Linux.
I wanted to be able to get flamegraphs from a Linux machine with minimal effort. With this program I get a single binary that I can quickly copy to a server and run in a screen session.
If you are in a hurry you can skip using screen and do:
rsync perfserve server.example.com:.
ssh -L localhost:8080:localhost:8080 server.example.com sudo ./perfserve
Then visit http://localhost:8080/?t=5 on your local machine to get a 5-second CPU profile.
git submodule update --init
GOOS=linux go build
This will create an executable perfserve that contains embedded
scripts from FlameGraph. If you are compiling on Linux you don't need
the GOOS=linux part.
Start the server by running perfserve. If you want to use a
different HTTP listen address from the default of localhost:8080,
use the -l flag.
Perfserve depends on perf and Perl. Because it runs perf it
probably needs to run as root.
Perfserve needs a scratch directory where it unpacks its Perl scripts
and where it stores perf record data. You can specify this directory
with the -d option. If you do not specify a directory, perfserve
will create a temporary directory under the OS tempdir.