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 ceresdb-server
./ceresdb-server ....
// 60s cpu sampling data
curl -L '0:5000/debug/profile/heap/60' > /tmp/heap_profile
jeprof --show_bytes --pdf /usr/bin/ceresdb-server /tmp/heap_profile > profile_heap.pdf
jeprof --show_bytes --svg /usr/bin/ceresdb-server /tmp/heap_profile > profile_heap.svg