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这个工具对应用程序的性能,延时等影响有测评数据吗 #6

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daliang111 opened this issue Aug 9, 2024 · 2 comments

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@daliang111
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是否有对开启这个工具,业务应用性能,延时,耗时抖动等方面的专门测评。
字节内部是否用于云线上机器的抓包分析,特别是对延时,抖动,耗时敏感的业务影响有多大。

@royzhr
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royzhr commented Aug 16, 2024

一般用于故障定位,性能损耗类似于tcpdump

@zf1575192187
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tracepoint base kprobe+bpf tracepoint+bpf raw_tracepoint+bpf
task_rename 1.1M 769K 947K 1.0M
urandom_read 789K 697K 750K 755K

https://lwn.net/Articles/749972/

只是hook的overhead

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