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Spy中的SelfCallerBarrier的锁的优化 #109

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Ryuhayabusa opened this issue Nov 5, 2018 · 1 comment
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Spy中的SelfCallerBarrier的锁的优化 #109

Ryuhayabusa opened this issue Nov 5, 2018 · 1 comment
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@oldmanpushcart
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@Ryuhayabusa
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在Spy.SelfCallerBarrier中，会维护一个线程链表，起到避免sandbox自我观察而进入死循环，这个链表中是元素，是线程的hashcode取模，然后线程进入该链表或从链表中移除时，会使用synchronized加锁，这个操作对性能有一定损耗，在压测时会导致机器负载上升（生产环境单机TPS约等于200时，load接近20）

这里需要进行一下锁的优化

image
oldmanpushcart pushed a commit that referenced this issue Feb 2, 2019
@dongchenxu
使用SpinLock解决 #109 的问题，降低在高并发时候CS过高的问题
6031c5c
@dongchenxu
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已在1.2.0版本优化Spy的锁机制

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@oldmanpushcart @dongchenxu @Ryuhayabusa