Netty Nio Epoll Bug Not Work Players Cant Rejoin Massive Spam Whenever Attempted
Found netty's native epoll transport in the. If n empty polling occurs continuously in a certain period, the epoll loop bug is triggered. For me it seems that problem reproducible only under heavy load or some kind of picks (few second after bootstrap).
Netty 解决/规避了JDK的NIO bug了吗？ 知乎
During load testing, we found that epoll transport uses around 55% cpu compared to around 20% for nio, just for maintaining the connections without doing any business specific io on. Just tried few times, sometimes it's even working,. We found it because our code waits for connection event success/failure (using “channelfuturelistener”) without timeout and this event was not returned.
We found it because our code waits for connection event success/failure (using “channelfuturelistener”) without timeout and this event was not returned.
Rebuild the selector, determine whether it is a rebuild request initiated by another thread, if not,. Since we updated from dse 4.8.2 to 4.8.4 we are seeing the following error: Few months back, i was able to perform load test with 15hits per sec without even reaching 25% of cpu utilization but now when i am performing a load test even with 5hits per. After poking around the code, it seems when querying pendingtasks of either nioeventloop or epolleventloop, the method blocks if called outside of said event loop.
Jdk nio的epoll bug，会导致selector空轮询，最终导致cpu 100% bug出现的原因. 在java原生使用 nio (epoll) 中，会存在一个著名的 bug —— epoll 空轮训导致cpu出现100%的情况出现. There is a long lived bug either in the jdk or even in linux epoll implementation that makes it possible for the select() call to return immediately with 0 selectionkey to be.
Netty Epoll Server IO ERROR · Issue 1534 · dmulloy2/ProtocolLib · GitHub
netty使用epoll报错java.lang.UnsatisfiedLinkError failed to load the
Netty 解决/规避了JDK的NIO bug了吗？ 知乎
