mirror of
https://github.com/docker/docs.git
synced 2026-11-05 00:14:17 +03:00
eaf5211928
This likely still needs some tuning/tweaking, but may be helpful as we start to do more scale/performance testing of the system.
50 lines
1.6 KiB
Markdown
50 lines
1.6 KiB
Markdown
# Profiling Orca
|
|
|
|
If you run the Orca server with the debug flag set, not only will you get more logging output, but we enable
|
|
remote pprof access.
|
|
|
|
Links:
|
|
* http://blog.golang.org/profiling-go-programs
|
|
* https://golang.org/pkg/net/http/pprof/
|
|
|
|
|
|
# Examples
|
|
|
|
* First deploy orca with debug.
|
|
* If you're using TLS (e.g., with bootstrap install) you'll need to add the certs to the local system's trusted certs (unfortunately pprof doesn't have an "--insecure" flag)
|
|
```bash
|
|
sudo bash -c "docker run --rm -it \
|
|
--name orca-bootstrap \
|
|
-v /var/run/docker.sock:/var/run/docker.sock \
|
|
dockerorca/orca-bootstrap \
|
|
dump-certs > /usr/local/share/ca-certificates/orca.crt"
|
|
sudo update-ca-certificates
|
|
```
|
|
|
|
* Now you can point pprof at the server
|
|
|
|
```bash
|
|
ORCA=https://192.168.104.73:443
|
|
go tool pprof ${ORCA}/debug/pprof/block
|
|
|
|
web
|
|
```
|
|
|
|
That will pop up a nice SVG image on your default browser showing the accumulated blocking calls
|
|
|
|
* Other URL endpoints of interest: ("web" should produce a nice summary in each of these)
|
|
* go tool pprof ${ORCA}/debug/pprof/profile - The CPU usage
|
|
* go tool pprof ${ORCA}/debug/pprof/heap - The memory usage
|
|
* go tool pprof ${ORCA}/debug/pprof/goroutine - The goroutine usage
|
|
* curl --insecure ${ORCA}/debug/pprof/ - Display the entry points (or use your browser)
|
|
|
|
# Dropped nodes
|
|
|
|
* It looks like nodefraction can be used to include nodes that would otherwise be dropped, but the web visualization seems to ignore it
|
|
```bash
|
|
go tool pprof -nodefraction=0.00000001 ${ORCA}/debug/pprof/block
|
|
|
|
peek swarm
|
|
```
|
|
|