# Threads

Sets the number of helper threads that pull data off the network.

This parameter applies to imptcp: Plain TCP Syslog.

Name:

  Threads

Scope:

  module

Type:

  integer

Default:

  module=2

Required?:

  no

Introduced:

  at least 5.x, possibly earlier

## Description

Number of helper worker threads to process incoming messages. These threads are utilized to pull data off the network. On a busy system, additional helper threads (but not more than there are CPUs/Cores) can help improving performance. The default value is two, which means there is a default thread count of three (the main input thread plus two helpers). No more than 16 threads can be set (if tried to, rsyslog always resorts to 16).

## Module usage

    module(load="imptcp" threads="...")

### Legacy names (for reference)

Historic names/directives for compatibility. Do not use in new configs.

- $InputPTCPServerHelperThreads — maps to Threads (status: legacy)

## See also

See also imptcp: Plain TCP Syslog.

Support: rsyslog Assistant | GitHub Discussions | GitHub Issues: rsyslog source project

Contributing: Source & docs: rsyslog source project

© 2008–2025 Rainer Gerhards and others. Licensed under the Apache License 2.0.