collectd is a small daemon which collects system information every 10 seconds and writes the results in an RRD-file. The statistics gathered so far are: (Only Load and CPU usage work under Solaris right now. Ping might work, lm-sensors propably not)
In contrast to most similar software, collectd is not a script but written in plain C for performance and portability. collectd stays in the memory so there is no need to start up a heavy interpreter every time new values should be logged. This allows collectd to have a 10 second resolution while being nice to the system.
collectd reads most information from the /proc-filesystem. Support for the sysfs approach is not yet planned/done, but theres no reason not to do that other than me not having time to code it right now.. Solaris statistics are collected using the kstat mechanismn that appears to be very solaris-specific. Also, it's not done yet, version 1.6.0 collects system load and cpu usage, nothing more.
collectd has successfully been tested on x86 under Debian GNU/Linux 3.1 (sarge), RedHat Linux 7.x, and Fedora Core 1. Also, Debian/Sparc and Solaris 9 did work. Other Platforms/Distributions are expected to work too. If you manage to compile and run collectd on other systems and/or under different distributions please drop me a line.
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Here are some key features of "collectd":
· Memory usage
· CPU usage
· System load
· Network traffic
· Network latency (ping)
· System temperatures (if lm-sensors is configured)
· Disk usage
What's New in This Release: [ read full changelog ]
· Documentation: Several updates and additions. Thanks to Sebastian Harl.
· collectd: Build issues (compiler warnings) have been fixed. Thanks to Bruno Prémont.
· collectd: Threshold subsection: Handling of NAN values in the percentage calculation has been fixed.
· collectd, Java plugin, NTPd plugin: Several diagnostic messages have been improved.
· cURL-JSON plugin: Handling of arrays has been fixed.
· libvirt plugin: A bug in reading the virtual CPU statistics has been fixed. Thanks to “JLPC” for reporting this problem.
· Modbus plugin: Compatibility with libmodbus 2.0.3 has been restored. (Version 4.10.3 only)
· Processes plugin: Potentially erroneous behavior has been fixed in an error handling case.
· Python plugin: Fix dispatching of values from Python scripts to collectd. Thanks to Gregory Szorc for finding and fixing this problem.
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