Are there any ongoing research efforts related to improving epoll? How does epoll compare to other event notification mechanisms in other operating systems, such as kqueue (macOS, BSD)?

Sep 14, 2019 ... There are people on the internet claiming epoll to be very bad. Too complicated to use, slow and error prone. That's just wrong. Epoll is neither of those ... Aug 19, 2021 ... I also played with making another whole subclass that has it on by default, see this package https://github.com/dgilman/selector-epoll-exclusive ... May 27, 2013 ... Select calls, which are O(n), epoll is an O(1) algorithm – this means that it scales well as the number of watched file descriptors increase. Jan 10, 2017 ... All file descriptors on Unix systems start out in "blocking mode". That means that I/O system calls like read, write, or connect can block. Oct 9, 2008 ... DaemonForums.org News Feedback and Suggestions FreeBSD FreeBSD General FreeBSD Ports and Packages FreeBSD Installation and Upgrading FreeBSD Security Name. epoll_ctl -- control an epoll file descriptor ; Synopsis. #include . int epoll_ctl (int epfd, int op, int fd, struct epoll_event * event); ... Dec 16, 2020 ... question on eventmask epoll on gpio value ... 5 is the file descriptor. (value_fd). But what is 11? I thought it would be the event mask ... Aug 8, 2023 ... The release of wasmer 4.1 introduces epoll support for wasix. Epoll opens up gates for scalability and improves performance in aspects such as networking, file ... NioSocketChannel → EpollSocketChannel. Because the native transport is not part of the Netty core, you need to pull the netty-transport-native-epoll as a ... epoll ... epoll is a Linux kernel system call for a scalable I/O event notification mechanism, first introduced in version 2.5.45 of the Linux kernel. ... Its ...

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what is epoll

• How does epoll handle persistent connections and connection pooling?
• Are there any specific considerations for using epoll with SCTP? How does epoll handle network sockets in different states (e.g., listening, connecting, established, closing, closed)?
• How can you ensure the integrity and consistency of the epoll state in multi-threaded or multi-process applications?
• Are there any kernel configuration parameters that can affect epoll performance?
• How does epoll interact with virtual machines and containers?
• Can you configure or monitor IP options for sockets being used with epoll?
• What is the role of epoll in asynchronous I/O? How does epoll relate to the AIO (Asynchronous I/O) API?
• What are the considerations for handling errors when sending UDP datagrams?
• What are the considerations for implementing connection pooling with edge-triggered epoll? How does epoll handle long-polling or other techniques for emulating persistent connections over HTTP?
• How is epoll used in other I/O intensive applications?