| ## Profiling |
| |
| ### CPU profiling |
| |
| HoraeDB provides cpu profiling http api `debug/profile/cpu`. |
| |
| Example: |
| |
| ``` |
| // 60s cpu sampling data |
| curl 0:5000/debug/profile/cpu/60 |
| |
| // Output file path. |
| /tmp/flamegraph_cpu.svg |
| ``` |
| |
| ### Heap profiling |
| |
| HoraeDB provides heap profiling http api `debug/profile/heap`. |
| |
| ### Install dependencies |
| |
| ``` |
| sudo yum install -y jemalloc-devel ghostscript graphviz |
| ``` |
| |
| Example: |
| |
| ``` |
| // enable malloc prof |
| export MALLOC_CONF=prof:true |
| |
| // run horaedb-server |
| ./horaedb-server .... |
| |
| // 60s cpu sampling data |
| curl -L '0:5000/debug/profile/heap/60' > /tmp/heap_profile |
| jeprof --show_bytes --pdf /usr/bin/horaedb-server /tmp/heap_profile > profile_heap.pdf |
| |
| jeprof --show_bytes --svg /usr/bin/horaedb-server /tmp/heap_profile > profile_heap.svg |
| ``` |
