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openresty cpu占用高, 上火焰图,大家帮忙分析下问题
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luajit
openresty
stap
systemtap
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kfli...@gmail.com
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Oct 9, 2017, 5:43:42 AM
10/9/17
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openresty 1.11.2.2
火焰图是用openresty-systemtap-toolkit/sample-bt 生成的,
图中看luaopen_string占用了大量时间, 搜索了一下也没相关的类似问题
a.svg
Yichun Zhang (agentzh)
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Oct 16, 2017, 3:36:05 PM
10/16/17
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Hello!
显然你的 Lua 代码或使用的 Lua 模块内部有低级错误呀。为啥要每请求频繁地加载 string 这个标准 Lua 模块呢?难道你用了
lua_code_cache off?
Regards,
Yichun
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