Go pprof Operations: Difference between revisions
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If the process has TLS enabled, see [[#TLS_and_Certificates|TLS and Certificates]] for suggestions on how to address the issue. | If the process has TLS enabled, see [[#TLS_and_Certificates|TLS and Certificates]] for suggestions on how to address the issue. | ||
=Dump Profiles | =Dump Profiles= | ||
Once a Go executable is started with the [[#Make_Sure_an_Executable_Starts_with_the_Profiling_Subsystem_Enabled|profiling subsystem enabled]], you can use <code>curl</code> to connect to the embedded web server and dump various [[Go_pprof_Concepts#Profile|profiles]]. | Once a Go executable is started with the [[#Make_Sure_an_Executable_Starts_with_the_Profiling_Subsystem_Enabled|profiling subsystem enabled]], you can use <code>curl</code> to connect to the embedded web server and dump various [[Go_pprof_Concepts#Profile|profiles]]. | ||
== | The general syntax of the command is: | ||
<syntaxhighlight lang='bash'> | |||
curl -k https://localhost:<http-port>/debug/pprof/<profile-name>?[debug=1|2] | |||
</syntaxhighlight> | |||
where profile name can be one of <code[[Go_pprof_Concepts#goroutine|goroutine]]</code>, <code>[[Go_pprof_Concepts#heap|heap]]</code>, <code>[[Go_pprof_Concepts#threadcreate|threadcreate]]</code>, <code>[[Go_pprof_Concepts#block|block]]</code>, <code>[[Go_pprof_Concepts#mutex|mutex]]</code>. | |||
For example, to dump goroutines: | |||
<syntaxhighlight lang='bash'> | <syntaxhighlight lang='bash'> | ||
curl -k https://localhost:<http-port>/debug/pprof/goroutine?debug=2 > ~/tmp/goroutine-profile.txt | curl -k https://localhost:<http-port>/debug/pprof/goroutine?debug=2 > ~/tmp/goroutine-profile.txt | ||
Revision as of 04:03, 16 November 2024
Internal
Make Sure an Executable Starts with the Profiling Subsystem Enabled
TODO
Connect with a Browser to an Executable that Has the Profiling Subsystem Enabled
Go to https://127.0.0.1:8443/debug/pprof/
If the process has TLS enabled, see TLS and Certificates for suggestions on how to address the issue.
Dump Profiles
Once a Go executable is started with the profiling subsystem enabled, you can use curl to connect to the embedded web server and dump various profiles.
The general syntax of the command is:
curl -k https://localhost:<http-port>/debug/pprof/<profile-name>?[debug=1|2]
where profile name can be one of <codegoroutine, heap, threadcreate, block, mutex.
For example, to dump goroutines:
curl -k https://localhost:<http-port>/debug/pprof/goroutine?debug=2 > ~/tmp/goroutine-profile.txt
TLS and Certificates
Profile a Running Process
Assuming that your local 127.0.0.1 address is aliased to "localhost.somedomain.com" in /etc/hosts and the certificates are issued for "localhost.somedomain.com", set CERT_PATH to the directory that contains and and:
export CERT_PATH=/Users/ovidiu/some-project/config
go tool pprof -http 127.0.0.1:8080 -tls_cert ${CERT_PATH}/localhost.somedomain.com.chain.pem -tls_key ${CERT_PATH}/localhost.somedomain.com.key.pem https://localhost.somedomain.com:8443