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collectd is a small daemon which collects system information periodically and provides mechanisms to store the values in a variety of ways.



If using Barrier Breaker prior to the stable release(r42625), wait for to be fixed (fixed in r40645); or implement the fix yourself using buildroot. Otherwise, none, get on with it

Required Packages

Name Version Size Description
collectd 4.10.2-2 59725 collectd is a small daemon which collects system information periodically and provides mechanisms to store the values in a variety of ways.
libpthread 0.9.32-66 30687 POSIX thread library
librt 0.9.32-66 5528 POSIX.1b RealTime extension library
zlib 1.2.5-1 39403 Library implementing the deflate compression method
libltdl 2.4-1 13614 A generic dynamic object loading library

A Total of about 148.957 Bytes on ar71xx. Goto Available Packages for a list of Plugins with their dependencies.



opkg install collectd
vi /etc/collectd.conf
. /etc/init.d/collectd enable
. /etc/init.d/collectd start


Using LuCI

  1. Install luci-app-statistics
  2. Configure collectd using the tools in Statistics → Setup section of the LuCI web interface.

Note: By default, collectd saves its RRD data in /tmp/rrd a RAM-based directory. Its contents will be lost when the device reboots. To save the data across power failure/restarts, consider Adding an external USB Drive and then configuring collectd to save the data to that new storage. Do this using the Output plugins → RRDTool tab in the GUI (configure the Storage directory), or the DataDir command of the <Plugin rrdtool> section of the collectd configuration file at /etc/collectd.conf .

Command-line Configuration

Configure the file /etc/collectd.conf according to:

Assuming the daemon is already running, use the commands sh /etc/init.d/collectd stop and sh /etc/init.d/collectd start to reload and apply changes on the fly.

Example Configurations

Minimal Configuration

# OpenWrt Config file for collectd(1).
# Please read collectd.conf(5) for a list of options.

#Hostname   "localhost"
#FQDNLookup  true
BaseDir     "/var/lib/collectd"
PIDFile     "/var/run/"
#PluginDir  "/usr/lib/collectd"
#TypesDB    "/usr/share/collectd/types.db"
Interval    30
ReadThreads 2

Simple Configuration

  1. Install collectd-mod-rrdtool, collectd-mod-processes, and collectd-mod-interface
BaseDir "/var/run/collectd"
Include "/etc/collectd/conf.d"                                                                            
PIDFile "/var/run/"                                                                           
PluginDir "/usr/lib/collectd"                                                                             
TypesDB "/usr/share/collectd/types.db"                                                                    
Interval 30                                                                                               
ReadThreads 2                                                                                             
LoadPlugin rrdtool                                                                                        
<Plugin rrdtool>                                                                                          
        DataDir "/tmp/rrd"                                                                                
        RRARows 100                                                                                       
        RRASingle true                                                                                    
        RRATimespan 3600                                                                                  
        RRATimespan 86400                                                                                 
        RRATimespan 604800                                                                                
        RRATimespan 2678400                                                                               
        RRATimespan 31622400                                                                              
LoadPlugin processes                                                                                      
<Plugin processes>                                                                                        
        Process uhttpd                                                                                    
        Process dnsmasq                                                                                   
        Process dropbear                                                                                  
LoadPlugin interface                                                                                      
<Plugin interface>                                                                                        
        IgnoreSelected false                                                                              
        Interface eth0                                                                                    
        Interface eth1                                                                                    
        Interface eth2                                                                                    
LoadPlugin memory

LoadPlugin uptime
LoadPlugin cpu
LoadPlugin load

Advanced Configuration

  1. Follow tc or qos to set up some traffic control
  2. Expand your storage resources by Mounting Filesystems
  3. Install collectd-mod-rrdtool, collectd-mod-iptables and collectd-mod-netlink (Total of additional about 271.030 Bytes (on ar71xx))
  4. mkdir /mnt/storage/rrd mkdir /mnt/storage/rrd/openwrt mkdir /mnt/storage/rrd/openwrt/netlink-pppoe-dsl
  5. vim /etc/collectd.conf:
# OpenWrt Config file for collectd(1).
# Please read collectd.conf(5) for a list of options.

#Hostname   "localhost"
#FQDNLookup  true
BaseDir     "/var/lib/collectd"
PIDFile     "/var/run/"
#PluginDir  "/usr/lib/collectd"
#TypesDB    "/usr/share/collectd/types.db"
Interval    30
ReadThreads 2

#LoadPlugin interface
#LoadPlugin load
#LoadPlugin memory
LoadPlugin netlink
LoadPlugin iptables
LoadPlugin rrdtool

<Plugin netlink>
        VerboseInterface pppoe-dsl
        QDisc "pppoe-dsl" "hfsc-1:0"
        Class "pppoe-dsl" "hfsc-1:1"
        Class "pppoe-dsl" "hfsc-1:10"
        Class "pppoe-dsl" "hfsc-1:101"
        Class "pppoe-dsl" "hfsc-1:102"
        Class "pppoe-dsl" "hfsc-1:103"
        Class "pppoe-dsl" "hfsc-1:20"
        Class "pppoe-dsl" "hfsc-1:201"
        Class "pppoe-dsl" "hfsc-1:202"
        Class "pppoe-dsl" "hfsc-1:203"
        Class "pppoe-dsl" "hfsc-1:30"
        Class "pppoe-dsl" "hfsc-1:301"
        Class "pppoe-dsl" "hfsc-1:302"
        Class "pppoe-dsl" "hfsc-1:303"
        Class "pppoe-dsl" "hfsc-1:40"
        Class "pppoe-dsl" "hfsc-1:50"

# We use iptables filter only, so:
<Plugin iptables>
        chain mangle TC_USER1
        chain mangle TC_USER2
        chain mangle TC_USER3

<Plugin rrdtool>
       DataDir "/mnt/storage/rrd"
       CacheTimeout 120
       CacheFlush   900

ls /mnt/storage/rrd/openwrt/netlink-pppoe-dsl

if_collisions.rrd                 if_tx_errors-carrier.rrd          ipt_bytes-class-hfsc-1:30.rrd     ipt_packets-class-hfsc-1:201.rrd
if_dropped.rrd                    if_tx_errors-fifo.rrd             ipt_bytes-class-hfsc-1:301.rrd    ipt_packets-class-hfsc-1:202.rrd
if_errors.rrd                     if_tx_errors-heartbeat.rrd        ipt_bytes-class-hfsc-1:302.rrd    ipt_packets-class-hfsc-1:203.rrd
if_multicast.rrd                  if_tx_errors-window.rrd           ipt_bytes-class-hfsc-1:303.rrd    ipt_packets-class-hfsc-1:30.rrd
if_octets.rrd                     ipt_bytes-class-hfsc-1:1.rrd      ipt_bytes-class-hfsc-1:40.rrd     ipt_packets-class-hfsc-1:301.rrd
if_packets.rrd                    ipt_bytes-class-hfsc-1:10.rrd     ipt_bytes-class-hfsc-1:50.rrd     ipt_packets-class-hfsc-1:302.rrd
if_rx_errors-crc.rrd              ipt_bytes-class-hfsc-1:101.rrd    ipt_bytes-qdisc-hfsc-1:0.rrd      ipt_packets-class-hfsc-1:303.rrd
if_rx_errors-fifo.rrd             ipt_bytes-class-hfsc-1:102.rrd    ipt_packets-class-hfsc-1:1.rrd    ipt_packets-class-hfsc-1:40.rrd
if_rx_errors-frame.rrd            ipt_bytes-class-hfsc-1:103.rrd    ipt_packets-class-hfsc-1:10.rrd   ipt_packets-class-hfsc-1:50.rrd
if_rx_errors-length.rrd           ipt_bytes-class-hfsc-1:20.rrd     ipt_packets-class-hfsc-1:101.rrd  ipt_packets-qdisc-hfsc-1:0.rrd
if_rx_errors-missed.rrd           ipt_bytes-class-hfsc-1:201.rrd    ipt_packets-class-hfsc-1:102.rrd
if_rx_errors-over.rrd             ipt_bytes-class-hfsc-1:202.rrd    ipt_packets-class-hfsc-1:103.rrd
if_tx_errors-aborted.rrd          ipt_bytes-class-hfsc-1:203.rrd    ipt_packets-class-hfsc-1:20.rrd

Graphs and Visualization

collectd is strictly a statistics collection service and does not provide any way to visualize the gathered data. To enable visualization of the gathered data, install and configure the collectd-mod-rrdtool plugin, and make sure the luci-app-statistics package is installed. The statistics gathered by collectd should then be viewable in the LuCI web interface.

For more information about RRDTool, see statistic.rrdtool and

Start on boot

To enable/disable start on boot:
. /etc/init.d/collectd enable this simply creates a symlink: /etc/rc.d/S80collectd → /etc/init.d/collectd
. /etc/init.d/collectd disable this removes the symlink again




Available Packages

Note 1: This list is true for r25513 (2011-02), additional packages could be available.
Note 2: The sizes are true for that version compiled for ar71xx. They will differ for other versions and other architectures. Some dependencies are already installed together with the collectd package. Don't count them double to estimate the size.

Name Version Dependencies Size in Bytes Description
collectd-mod-apache 4.10.2-2 libcurl 10455 apache status input plugin
collectd-mod-apcups 4.10.2-2 8435 apcups status input plugin
collectd-mod-ascent 4.10.2-2 libcurl, libxml2 9874 ascent status input plugin
collectd-mod-bind 4.10.2-2 libcurl, libxml2 12726 BIND server/zone input plugin
collectd-mod-conntrack 4.10.2-2 6576 connection tracking table size input plugin
collectd-mod-contextswitch 4.10.2-2 6832 context switch input plugin
collectd-mod-cpu 4.10.2-2 7105 CPU input plugin
collectd-mod-csv 4.10.2-2 8259 CSV output plugin
collectd-mod-curl 4.10.2-2 libcurl 9722 cURL input plugin
collectd-mod-dbi 4.10.2-2 libdbi 15462 relational database input plugin
collectd-mod-df 4.10.2-2 10448 disk space input plugin
collectd-mod-disk 4.10.2-2 8789 disk usage/timing input plugin
collectd-mod-dns 4.10.2-2 libpcap 12201 DNS traffic input plugin
collectd-mod-email 4.10.2-2 10072 email output plugin
collectd-mod-exec 4.10.2-2 12769 process exec input plugin
collectd-mod-filecount 4.10.2-2 9041 file count input plugin
collectd-mod-fscache 4.10.2-2 7088 file-system based caching framework input plugin
collectd-mod-interface 4.10.2-2 6951 network interfaces input plugin
collectd-mod-iptables 4.10.2-2 iptables 19468 iptables status input plugin
collectd-mod-irq 4.10.2-2 7547 interrupt usage input plugin
collectd-mod-load 4.10.2-2 6715 system load input plugin
collectd-mod-logfile 4.10.2-2 7781 log files output plugin
collectd-mod-madwifi 4.10.2-2 12004 MadWifi status input plugin
collectd-mod-memory 4.10.2-2 7183 physical memory usage input plugin
collectd-mod-mysql 4.10.2-2 libmysqlclient 7464 MySQL status input plugin
collectd-mod-netlink 4.10.2-2 ip 13653 netlink input plugin
collectd-mod-network 4.10.2-2 17383 network input/output plugin
collectd-mod-nginx 4.10.2-2 libcurl 8132 nginx status input plugin
collectd-mod-ntpd 4.10.2-2 10468 NTP daemon status input plugin
collectd-mod-olsrd 4.10.2-2 9538 OLSRd status input plugin
collectd-mod-openvpn 4.10.2-2 9816 OpenVPN traffic/compression input plugin
collectd-mod-ping 4.10.2-2 liboping 9874 ping status input plugin
collectd-mod-postgresql 4.10.2-2 libpq 16046 PostgreSQL status input plugin
collectd-mod-powerdns 4.10.2-2 11746 PowerDNS server status input plugin
collectd-mod-processes 4.10.2-2 11752 process status input plugin
collectd-mod-protocols 4.10.2-2 7821 network protocols input plugin
collectd-mod-rrdtool 4.10.2-2 librrd1 13579 RRDtool output plugin
collectd-mod-snmp 4.10.2-2 libnetsnmp 12999 SNMP input plugin
collectd-mod-syslog 4.10.2-2 6418 syslog output plugin
collectd-mod-table 4.10.2-2 10007 table-like structured file input plugin
collectd-mod-tail 4.10.2-2 7945 tail input plugin
collectd-mod-tcpconns 4.10.2-2 8103 TCP connection tracking input plugin
collectd-mod-teamspeak2 4.10.2-2 10068 TeamSpeak2 input plugin
collectd-mod-ted 4.10.2-2 8211 The Energy Detective input plugin
collectd-mod-thermal 4.10.2-2 7999 system temperatures input plugin
collectd-mod-unixsock 4.10.2-2 13072 unix socket output plugin
collectd-mod-uptime 4.10.2-2 6874 uptime status input plugin
collectd-mod-users 4.10.2-2 6470 user logged in status input plugin
collectd-mod-vmem 4.10.2-2 7751 virtual memory usage input plugin
collectd-mod-wireless 4.10.2-2 7327 wireless status input plugin
collectd-mod-write-http 4.10.2-2 libcurl 11407 HTTP POST output plugin
libcurl 7.21.3-1 libopenssl, zlib 130498 A client-side URL transfer library
libdbi 0.8.3-3 20321 SQLite is a small C library that implements a self-contained, embeddable, zero-configuration SQL database engine. This package contains the SQLite (v3.x) shared library, used by other programs.
libelf 0.8.13-1 26800 ELF object file access library
libmysqlclient 5.1.53-2 zlib 161737 MySQL client library
libncurses 5.7-3 115370 Terminal handling library
libnetsnmp libelf 330435 Simple Network Management Protocol (SNMP) is a widely used protocol for monitoring the health and welfare of network equipment (eg. routers), computer equipment and even devices like UPSs. Net-SNMP is a suite of applications used to implement SNMP v1, SNMP v2c and SNMP v3 using both IPv4 and IPv6. . This package contains shared libraries, needed by other programs.
libopenssl 1.0.0d-1 zlib 582261 The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library. This package contains the OpenSSL shared libraries, needed by other programs.
liboping 1.6.0-1 10140 C library to generate ICMP echo requests.
libpcap 1.0.0-2 75960 This package contains a system-independent library for user-level network packet capture.
libpq 9.0.1-1 zlib, libreadline, libncurses, coreutils-su 55112 PostgreSQL client library.
libreadline 5.2-2 109121 The Readline library provides a set of functions for use by applications that allow users to edit command lines as they are typed in. Both Emacs and vi editing modes are available. The Readline library includes additional functions to maintain a list of previously-entered command lines, to recall and perhaps reedit those lines, and perform csh-like history expansion on previous commands.
librrd1 1.0.50-1 zlib 138968 RRD is the Acronym for Round Robin Database. RRD is a system to store and display time-series data (i.e. network bandwidth, machine-room temperature, server load average). It stores the data in a very compact way that will not expand over time, and it presents useful graphs by processing the data to enforce a certain data density. It can be used either via simple wrapper scripts (from shell or Perl) or via frontends that poll network devices and put friendly user interface on it. This is version 1.0.x with cgilib-0.4, gd1.3 and libpng-1.0.9 linked into The library is much smaller compared to the 1.2.x version with separate dynamic linked libraries. This package contains a shared library, used by other programs.
libxml2 2.7.8-1 libpthread, zlib 470900 A library for manipulating XML and HTML resources.
zlib 1.2.5-1 39403 Library implementing the deflate compression method
coreutils-su 8.8-1 coreutils 13021 Full version of standard GNU su utility. Normally, you would not use this package, since the functionality in BusyBox is more than sufficient.
coreutils 8.8-1 782 Full versions of standard GNU utilities. Normally, you would not use this package, since the functionality in BusyBox is more than sufficient and much smaller.
ip 2.6.35-3 85362 Routing control utility
docs/guide-user/perf_and_log/statistic.collectd.txt · Last modified: 2019/03/22 15:10 by vgaetera