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Diffstat (limited to 'test/README.md')
| -rw-r--r-- | test/README.md | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/test/README.md b/test/README.md index b5cbe1aff3..9d4351b1de 100644 --- a/test/README.md +++ b/test/README.md @@ -175,7 +175,28 @@ cat /tmp/user/1000/testo9vsdjo3/node1/regtest/bitcoind.pid gdb /home/example/bitcoind <pid> ``` -Note: gdb attach step may require `sudo` +Note: gdb attach step may require ptrace_scope to be modified, or `sudo` preceding the `gdb`. +See this link for considerations: https://www.kernel.org/doc/Documentation/security/Yama.txt + +##### Profiling + +An easy way to profile node performance during functional tests is provided +for Linux platforms using `perf`. + +Perf will sample the running node and will generate profile data in the node's +datadir. The profile data can then be presented using `perf report` or a graphical +tool like [hotspot](https://github.com/KDAB/hotspot). + +To generate a profile during test suite runs, use the `--perf` flag. + +To see render the output to text, run + +```sh +perf report -i /path/to/datadir/send-big-msgs.perf.data.xxxx --stdio | c++filt | less +``` + +For ways to generate more granular profiles, see the README in +[test/functional](/test/functional). ### Util tests |