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为什么只有Tail、Cursor指针、Flag-RingBuffer中采用了CacheLine 补齐方式？ #50

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csonezp opened this issue Apr 20, 2020 · 1 comment

csonezp commented Apr 20, 2020

UID-RingBuffer不需要吗？

yuzhaopeng commented Dec 31, 2021 •

edited

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我理解是因为在并发获取uid的情况下，uid-RingBuffer 只读不写，但是 Flag-RingBuffer 是读写一起的，读完立马就写，如果不做CacheLine填充，就会出现相邻的两个flag 加载到同一个CacheLine中，两个线程同时写flag 出现竞争，然后影响并发性能

baozhi closed this as completed

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