many concurrent smtp connections

number of concurrent connections, both of these parameters should be increased.The maximum number of connections allowed by Web server is also subject to the kernel parameter settings of the operating system, typically Windows is 2000 or so, and Linux is about 1000.3, Server.xml Configuration IntroductionThe following describes the basic configuration informatio

Our website is deployed on the Linux server, especially the Web server, we may sometimes as operations personnel, must be to see whether the number of concurrent connections to the site is not a bottleneck, so under Linux, how can we see the number of concurrent connections to the server? Use the following commands to

Server authorization mode: differences between the number of concurrent connections per server and each device or userAuthentication per server: the number of concurrent client users allowed to access the service at the same time;Each customer authentication: indicates that each of your clients has an authentication license, through which the client accesses the

About the number of Nginx concurrent connectionsRecently in learning to use Nginx, do some simple stress test, found that the maximum number of concurrent connections can only up to more than 100The state at the beginning of the test, Netstat-n | awk '/^tcp/{++s[$NF]} END {for (a in S) print A, s[a]} ' Close_wait 2 Established 133 SYN_RECV 39

This article shares with you the main isLinuxUseNetstatcommand to view the number of concurrent connectionsRelated content, come together to look at it, hope that everyone to learn Linux help. Netstat-n | awk '/^tcp/{++s[$NF]} END {for (a in S) print A, s[a]} ' explanation : examples of returned results: Last_ack 5 (number of requests waiting to be processed) SYN_RECV 30 Established 1597 (Normal data transfer status) Fin_wait1 51 Fin_wait2 504 Time_w

It was a very simple question, but the search took a turn and found that everyone had written it wrong. So here's a summary:Almost all Chinese pages are introduced, to modify the default maximum number of concurrent connections tomcat, you should set the following (in fact, these steps are wrong):--------------------------------------------In the 　　Minprocessors: Minimum number of idle connection threads fo

Transferred from: http://www.linuxidc.com/Linux/2013-09/90332.htmIt was a very simple question, but the search took a turn and found that everyone had written it wrong. So here's a summary:Almost all Chinese pages are introduced, to modify the default maximum number of concurrent connections tomcat, you should set the following (in fact, these steps are wrong):--------------------------------------------In

ObjectiveEach of the language in some extreme cases of the performance is generally not the same, then I commonly used in the Java language, in reaching 1 million concurrent connections, what will happen, some curious, and some look forward to.This time using the handy Netty NIO Framework (netty-3.6.5.final), the package is very good, the interface is very comprehensive, just like its current domain name Ne

Number of concurrent TCP connections on a single serverQuestion: How many TCP concurrent connections can a single server support?1. File Descriptor Restrictions:For a server, each TCP connection consumes a file descriptor, and once the file descriptor is used, the error that the new connection comes back to us is "Sock

1, modify the user process to open the number of files limitOn Linux platforms, regardless of whether you write a client program or a server-side program, the highest number of concurrent TCP connection processing is limited by the system's number of simultaneous open files for a single user process (this is because the system creates a socket handle for each TCP connection). Each socket handle is also a file handle. You can use the Ulimit command to

Apache is a cross-platform Web server, because of its simple and efficient, stable security features, is widely used in computer technology in all areas. Now, with its huge number of users, Apache has become the number one Web server for users.However, in a real production environment, it is still not possible to use the default configuration of Apache directly to act as a server. After all, in order to use Apache server more fully and rationally, we should make some necessary adjustments to Apa

Http://www.cn.redhat.com/kbase/0708/6072.php How do I limit the maximum number of concurrent connections shared in the samba service? Solution: Solution: The maximum number of concurrent connections shared by Samba is unlimited by default. The configuration file is represented by 0. To control the number of

What is the number of concurrent IIS connectionsThe number of iisconcurrent connections is the first request to the server for xxx.html, and then requests CSS, JS, and images on the webpage. Each request is counted as a number of IIS concurrencies. Therefore, IIS is theoretically divided into several program cases.There are several situations: (taking 50 persons online in m space as an example)The user down

programs allow up to 1014 simultaneous TCP connections by default.For a communication handler that wants to support a higher number of TCP concurrent connections, you must modify the soft limit (soft limit) and the hard limit (hardlimit) of the number of files that Linux has open simultaneously for the current user's process. The soft limit refers to the Linux i

1024 files at the same time, and that the 1024 files will have to remove the standard input, standard output, standard error, Server listener socket, UNIX domain socket for interprocess communication, etc. Then the remaining number of files available for the client socket connection is only about 1024-10 = 1014 or so. In other words, Linux-based communication programs allow up to 1014 simultaneous TCP connections by default.For a communication handle

1, modify the user process can open the number of files limitOn a Linux platform, regardless of whether you write a client or a service-side program, the highest concurrency is limited by the number of files that can be opened by the system at the same time as the user's single process (because the system creates a socket handle for each TCP connection) for high concurrent TCP connection processing. Each socket handle is also a file handle. You can us

simultaneous TCP connections by default.For a communication handler that wants to support a higher number of TCP concurrent connections, you must modify the soft limit (soft limit) and the hard limit (hardlimit) of the number of files that Linux has open simultaneously for the current user's process. The soft limit refers to the Linux in the current system can w

?auto　　BAT Code #ps-ef|grep Httpd|wc-l 1388Count the number of httpd processes, and a single request initiates a process that is used for the Apache server.Indicates that Apache can handle 1388 concurrent requests, which Apache can automatically adjust according to the load situation.　　BAT Code #netstat-nat|grep-i "|wc-l " 4341Netstat-an will print the current network link state of the system, while Grep-i "80" is used to e

Introduced The number of concurrent connections refers to the ability of a firewall or proxy server to handle its business information flow, is the maximum number of point-to-point connections that a firewall can handle at the same time, reflecting the ability of the firewall device to access and link state tracking for multiple

If a Web site provides file downloads, it is very easy for users to use multi-threaded downloads, which can easily deplete resources, so limiting the number of threads to download (that is, limiting the number of concurrent connections to one IP) is important. (After the Apache compilation completes, adds the extra module) 1. Download the corresponding version [Root@localhost ~]# wget http://dominia.org/d