sendfile system call

Sendfile essence is an optimization technology in Linux system, in order to send files and network communication, reduce the user-state space and disk switching data, and directly at the core level of data copy, This technology is linux2.4, it is

In the APACHE,NGINX,LIGHTTPD and other Web servers, there is a sendfile-related configuration, in some online information has talked about Sendfile will improve the file transfer performance, that sendfile what is it? What is the principle of it?In

Today, when looking at the Nginx thread pool, frequently see sendfile, in fact, often see sendfile, but I usually selectively ignore it ... First, Sendfile, tomorrow in a good chat on the nginx thread pool Some of the sudden, through the

Original address: http://www.vpsee.com/2009/07/linux-sendfile-improve-performance/ The popular Web server now offers Sendfile options to improve server performance, what exactly is sendfile and how does it affect performance. Sendfile is actually a

Sendfile Now the popular Web server has the Sendfile option to improve server performance, what exactly is sendfile, how does it affect performance? Sendfile is actually a system call after linux2.0+, and the Web server can decide whether to take

Address: http://www.vpsee.com/2009/07/linux-sendfile-improve-performance/ Currently, the popular Web servers provide the sendfile option to improve server performance. What is sendfile? How does it affect performance? Sendfile is actually a system

The Sendfile function passes data directly between two file descriptor descriptors ( operating in the kernel and transmitting ), thus avoiding the copying between the kernel buffer data and the user buffer data. The operating efficiency is very high,

The Sendfile function passes data directly between the two file descriptors ( operating completely in the kernel, transmitting ), thus avoiding the copying between the kernel buffer data and the user buffer data. The operation is highly efficient

I have read the Usage Analysis of sock_sendpage, a new high-risk Kernel Vulnerability.This post outlines the beginning and end of the entire vulnerability under the guidance of jiujianyi and cuer. I would like to share with you the space for

One, the problem of the typical IO callA typical Web server transmits static files (such as CSS,JS, pictures, etc.) in the following process:Read (file, tmp_buf, Len);Write (socket, tmp_buf, Len);The first call to read reads the file from disk to