| --- |
| title: "性能诊断" |
| weight: 20 |
| --- |
| |
| ### CPU 剖析 |
| |
| HoraeDB 提供 CPU 剖析 http 接口 `debug/profile/cpu`. |
| |
| 例子: |
| |
| ``` |
| // 60s CPU 采样数据 |
| curl 0:5000/debug/profile/cpu/60 |
| |
| // 产出文件 |
| /tmp/flamegraph_cpu.svg |
| ``` |
| |
| ### 内存剖析 |
| |
| HoraeDB 提供内存剖析 http 接口 `debug/profile/heap`. |
| |
| ### 安装依赖 |
| |
| ``` |
| sudo yum install -y jemalloc-devel ghostscript graphviz |
| ``` |
| |
| 例子: |
| |
| ``` |
| // 开启 malloc prof |
| export MALLOC_CONF=prof:true |
| |
| // 运行 horaedb-server |
| ./horaedb-server .... |
| |
| // 60s 内存采样数据 |
| 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 |
| ``` |
