COSCUP2020
入門
TR214
歡迎來到 https://hackmd.io/@coscup/2020 共筆
請從這裡開始
slides: https://docs.google.com/presentation/d/1vjtrc5u33x4Oir06sJLIKuNfRDZIfjNOd7Xr04IhJ7k/
專注在 performance 應用
BPF 通常比其他有效率
perffomance is the currency of computing
MIT 6.172
較輕小 bpf 可以跑在 online 上
bpf is programmable
Tools for BPF performance
寫起來跟 awk 類似
bpftrace -e "kretprobe:vfs_read{@bytes=hits(retval);}"
type:identifier1 讀多少 bytes 的次數
producer - Consumer Problem
Dessign Decisions
Naive Producer-Consumer Solution
分析
Off-CPU analysis
Producer 的 wait 不真正影響時間
consumer
or
or
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