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Topic

This article applies to BIG-IP AAM 11.x through 15.x. For information about BIG-IP WebAccelerator, refer to the following articles:

Description

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

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. Additionally, it performs the following tasks:

 

  • Image optimization
  • PDF linearization
  • Content invalidation
  • Statistics reporting
 BIG-IP AAM will not accelerate HTTP 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 BIG-IP AAM cached objects. BIG-IP AAM will not accelerate HTTP traffic. /var/log/datastor
dedup_admin Responsible for deduplication operations. The deduplication feature will not function. /var/log/dedup_admin
mysqld The MySQL database stores BIG-IP AAM performance report data.
Note: This daemon may be shared by other BIG-IP services.		 Performance data will not be logged. BIG-IP AAM will continue to process traffic. /var/lib/mysql/mysqld.err
wccpd Web Cache Communication Protocol (WCCP) process in BIG-IP AAM. The wccpd can be stopped if the WCCP feature is not in use. If wccpd is disabled, the WCCP feature will not function. The WCCP feature will not function. /var/log/wccpd.log
wocd Manages remote iSession endpoints. BIG-IP AAM will not accelerate WAN traffic. /var/log/wocd
wocplugin Manages and optimizes CIFS connections. BIG-IP AAM will continue to accelerate traffic, but will not optimize CIFS connections. /var/log/wocplugin

Starting and stopping BIG-IP AAM processes

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

bigstart action process

In this syntax, note the following:

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

Supplemental Information