upstream memory leak

[Lu Xiao]

QUIC upstream

UDP upstream

For the same configuration, the memory footprint of QUIC upstream is very high and constantly increasing, but UDP upstream is very low, both without caching

[Lu Xiao]

2 hours later

[Eugene]

@lluu131, hello and thanks for the thorough report. Unfortunately, we can't reproduce the leak. It would really help us to troubleshoot this issue if you could collect a goroutines profile for us.

To perform that, restart the dnsproxy service with profiling enabled. To enable it, use the --pprof CLI option, or set pprof: true in the YAML configuration file. When the memory grows to the suspicious level again, use the following command:

curl "http://127.0.0.1:6060/debug/pprof/goroutine?debug=1" > profile.txt

Or just follow the "http://127.0.0.1:6060/debug/pprof/goroutine?debug=1" URL with your web browser.

Note that profiles could only be accessed on the same host machine.

You can send the resulting profile to our [e-mail].

[Lu Xiao]

all-servers: yes
#fastest-addr: yes
Memory is fine after commenting out fastest-addr

[Lu Xiao]

Debug re-collected, just found out that memory increases massively when the quic server network is unreachable, but doesn't free up or diminish when it recovers