RcvBufSize¶

Requests specific socket receive buffer size; disables auto-tuning.

This parameter applies to imudp: UDP Syslog Input Module.

Name:: RcvBufSize
Scope:: input
Type:: size
Default:: input=0
Required?:: no
Introduced:: 7.3.9

Description¶

This requests a socket receive buffer of specific size from the operating system. It is an expert parameter, which should only be changed for a good reason. Note that setting this parameter disables Linux auto-tuning, which usually works pretty well. The default value is 0, which means “keep the OS buffer size unchanged”. This is a size value. So in addition to pure integer values, sizes like 256k, 1m and the like can be specified. Note that setting very large sizes may require root or other special privileges. Also note that the OS may slightly adjust the value or shrink it to a system-set max value if the user is not sufficiently privileged. Technically, this parameter will result in a setsockopt() call with SO_RCVBUF (and SO_RCVBUFFORCE if it is available). (Maximum Value: 1G)

Examples:

module(load="imudp") # needs to be done just once
input(type="imudp" port="514" rcvbufSize="1m")

Input usage¶

input(type="imudp" RcvBufSize="...")

RcvBufSize¶

Description¶

Input usage¶

See also¶