epoll

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With a single file descriptor, Is there any performance difference between select, poll and epoll and ...?

The title really says it all. The and ... means also include pselect and ppoll.. The server project I\'m working on basically structured with multiple threads.Each[详细]

2023-02-24 02:12 分类：问答
epoll_ctl : Operation not permitted error - c program

1 #include <sys/epoll.h>开发者_运维百科; 2 #include <stdio.h> 3 #include <sys/types.h>[详细]

2023-02-23 09:02 分类：问答
Why exactly does ePoll scale better than Poll?

开发者_如何学运维Short question but for me its difficult to understand. Why exactly does ePoll scale better than Poll? While Damon\'s reason is correct for the unusual case where you never block on a[详细]

2023-02-18 23:50 分类：问答
linux - Can't get eventfd to work with epoll together

I\'m writing a simple server class based on epoll. In order to wake up epoll_wait(), I decided to use an eventfd. It is said that it is better suited for simple event communication and I agree with th[详细]

2023-02-18 05:20 分类：问答
How can I serve a (never ending) system call with Tornado

For instance, suppose I have this co开发者_运维技巧de: def dump(): tcpdump = subprocess.Popen(\"tcpdump -nli any\",[详细]

2023-02-13 10:16 分类：问答
epoll file descriptor operations

I\'m trying to wrap my head around epoll in Linux. The normal operation seems to be: // Create the epoll_fd[详细]

2023-02-07 23:51 分类：问答
Does `epoll_wait` signify which event was triggered when both EPOLLIN and EPOLLOUT were added?

Suppose I am specifying both EPOLLIN and EPOLLOUT flags when adding descriptors t开发者_运维知识库o monitor with epoll_wait. From the \'epoll\' manpages it is unclear what exactly each of the epoll_ev[详细]

2023-02-06 21:10 分类：问答
epoll_wait() receives socket closed twice (read()/recv() returns 0)

We have an application that uses epoll to listen and process http-connections. Sometimes epoll_wait() receives close event on fd twice in a \"row\". Meaning: epoll_wait() returns connection fd on whic[详细]

2023-02-05 20:30 分类：问答
C: epoll and multithreading

I need to create specialized HTTP server, for this I plan to use epoll sycall, but I want to utilize multiple processors/cores and I can\'t come up with architecture solution.[详细]

2023-02-03 23:26 分类：问答
Is it possible to detect the time difference between the moment an epoll is generated by the kernel and the moment the Sun JVM reads it?

i.e. Time A = voltage hits the NIC; Time B = Selector from开发者_如何学编程 Java NIO package is able to select socket channel for I/O.Use SO_TIMESTAMP and find a NIC that actually supports timestamps[详细]

2023-01-31 07:28 分类：问答