Windows Server IIS Concurrent Request settings

Update the server, suddenly found some of the machine error, roughly described as follows

HTTP Error 503.2-service Unavailable

The value set by [email protected] is being exceeded.

....

Server IIS basically uses the default settings, in order to avoid the next time this kind of error, find the relevant configuration, improve IIS concurrency number setting

1. Modify the IIS application pool queue Length

In advanced settings, the queue length is modified to 65535

2. Modify Appconcurrentrequestlimit settings for IIS

The default value is 5000, which is modified to 50000 (or a larger value)

C:\windows\system32\inetsrv\appcmd.exe Set config/section:serverruntime/appconcurrentrequestlimit:50000

You can view this setting in%systemroot%\system32\inetsrv\config\applicationhost.config:

3. Modify the settings of the Processmodel>requestqueuelimit in Machine.config

Changed from the original default 5000 to 50000

<processmodel enable= "true" requestqueuelimit= "50000"/>

4. Modify the registry to adjust the number of simultaneous TCPIP connections supported by IIS 7

5. Restart the service, the settings take effect

net stop http  & net start  

Microsoft Official Reference article

Modifying the net Request Queue Limit

http://technet.microsoft.com/en-us/library/dd425294 (office.13). aspx

Microsoft.com Microsoft Official website IIS application pool configuration recommendations, application pool configuration item description

Managing, Tuning, and configuring application pools in IIS 7.0

Windows Server IIS Concurrent Request settings