+2013-08-18, Version 5.4.0
+ * collectd: The "LoadPlugin" config option no longer attempts to load
+ plugins twice. If more than one "LoadPlugin" statement or block is
+ encountered, only the first will have any effect.
+ * collectd: The "AutoLoadPlugin" option allows to automatically load
+ plugins for which a configuration is found.
+ * collectd: The "WriteQueueLimitHigh" and "WriteQueueLimitLow" options
+ allow collectd to drop values when under stress, to avoid running out
+ of memory. Thanks to Yves Mettier for his patch.
+ * amqp plugin: The "GraphiteSeparateInstances" and
+ "GraphiteAlwaysAppendDS" options have been added. Thanks to Laurent
+ for the patch.
+ * aquaero plugin: This new plugin reads various metrics, e.g. fan
+ speeds and temperatures, from Aquaero 5, a fan and water cooling
+ control panel. Thanks to Alex Deymo for his patch.
+ * curl plugin: The "MeasureResponseCode" option has been added. Thanks
+ to Jan Matějka for his patch.
+ * curl_json plugin: Support for UNIX domain sockets and array wildcards
+ has been added. Thanks to Jim Radford for his patch.
+ * curl_xml plugin: Support for long URLs has been improved.
+ * cgroups plugin: This new plugin collects CPU accounting information
+ for processes in a cgroup. Thanks to Michael Stapelberg for his patch.
+ * df plugin: The "ValuesAbsolute" and "ValuesPercentage" options have
+ been added. Thanks to Vedran Bartonicek for the patch.
+ * exec plugin: Do UID / GID lookups before forking. This should prevent
+ a race condition in the NSS library. Thanks to Ceri Storey for the
+ patch.
+ * lvm plugin: This new plugin collects size information from Linux'
+ Logical Volume Manager (LVM). Thanks to Chad Malfait for his work.
+ * memcached plugin: Support for increment and decrement counts has been
+ added. Thanks to Blake Matheny for the patch.
+ * mic plugin: This new plugin collects CPU and memory usage, power
+ consumption and temperatures of Intel's Many-Integrated-Core (MIC)
+ architecture, such as Xeon Phi cards. Thanks to Evan Felix for his
+ work.
+ * netlink plugin: This plugin has been converted to use the supported
+ "libmnl" library. Thanks to Andreas Henriksson for his patch.
+ * nginx plugin: Collection of accepted and handled connections has been
+ added. Thanks to Patrick Shan for his patch.
+ * sigrok plugin: This new plugin collects metrics from sigrok, a signal
+ processing framework reading various hardware devices, from light
+ meters to spectrum analyzers. Thanks to Bert Vermeulen for his patch.
+ * statsd plugin: This new plugin listens to a UDP socket and reads
+ metrics in the StatsD format.
+ * varnish plugin: Many additional metrics have been added. Thanks to
+ Nick Stenning for his patch.
+ * write_graphite plugin: Support for "UDP" has been added. Thanks to
+ Javier Maestro for his patch.
+ * write_riemann plugin: The "TTLFactor" option has been added.
+ * zfs_arc plugin: Support for FreeBSD has been added. Thanks to Xin Li
+ for his patch.
+
2013-07-13, Version 5.3.1
* Documentation: Various fixes.
* Configuration: Fix error handling: Errors in included files were