Hi : In HBASE-21926, Andrew introduced the great profile tool (async-profiler ) into our HBase. It's very easy to use this: 1. you need to download the binary of async-profier from here: https://github.com/jvm-profiling-tools/async-profiler 2. then you need to set a java option which point to the home of async-profiler lib, here I set: -Dasync.profiler.home=/home/work/soft because my async-profiler is under here:
[work@soft]$ pwd /home/work/soft [work@soft]$ tree . ├── async-profiler-1.5-linux-x64.tar.gz ├── build │ ├── async-profiler.jar │ ├── jattach │ └── libasyncProfiler.so ├── CHANGELOG.md ├── LICENSE ├── profiler.sh └── README.md 1 directory, 8 files 3. finally, you can need restart the RS and click the [profier] tab in RS web UI, then you will see the flame graph. You can also see the java doc for more details: https://github.com/apache/hbase/blob/858d30dd30159de70ac62d44c0ee0278708f2dec/hbase-http/src/main/java/org/apache/hadoop/hbase/http/ProfileServlet.java Thanks. On Mon, Jun 3, 2019 at 9:15 PM Jean-Marc Spaggiari <jean-m...@spaggiari.org> wrote: > Hi all, > > Not sure it's the right plateform, but can someone explain me how flame > graphs (Like the one here) > https://issues.apache.org/jira/browse/HBASE-22532 are > generated? > > Thanks, > > JMS >
