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Home » F5 Resources » F5 BIG-IP Daemons » F5 BIG-IP WebAccelerator Daemons » F5 BIG-IP WebAccelerator Daemons (11.x)

This page applies to BIG-IP® 11.x. For information about other versions, refer to the following pages:

For information about daemons from other modules, refer to the following pages.

When the BIG-IP system is licensed with BIG-IP WebAccelerator™, the BIG-IP system runs an additional set of processes on top of the standard set of BIG-IP processes. The following table lists the core BIG-IP WebAccelerator processes, and indicates the impact to the BIG-IP WebAccelerator operation if the process is not running:

Overview of BIG-IP WebAccelerator Daemons (11.x)
Daemon Description Impact if not running Relevant log files
wamd The wamd process performs all of the web acceleration according to the policy specified in the application configuration. The wamd processes client requests from TMM, and communicates with the origin web servers. In addition the process performs the following tasks:

  • Image optimization
  • PDF linearization
  • Content invalidation
  • Statistics reporting
 The BIG-IP WebAccelerator system will not process traffic. /var/log/wa/wamd.log
datastor Datastor provides an abstraction layer over large storage systems, giving a unified interface to storage objects for BIG-IP applications on disk. Datastor is the interface to all WebAccelerator cached objects. The BIG-IP WebAccelerator system will not process traffic. /var/log/datastor
mysqld The MySQL database stores the following WebAccelerator information:

  • Performance report data

Note: This daemon may be shared by other BIG-IP services.

 The system will not log performance data. The BIG-IP WebAccelerator system will continue to process traffic. /var/lib/mysql/mysqld.err

Starting and stopping BIG-IP WebAccelerator processes

You can use the command line to manage the BIG-IP WebAccelerator processes on the BIG-IP system. To stop, start, or restart all BIG-IP WebAccelerator processes, use the following syntax with the bigstart command:

bigstart

In this syntax, note the following:

  • refers to the action for bigstart, such as stop, start, or restart.
  • is the name of the BIG-IP WebAccelerator process.

Note: For information about using the bigstart utility, refer to the bigstart man page or K4080: Adding and removing services included in the bigstart process.