1 2008-01-21, Version 4.2.4
2 * unixsock plugin: A bug in the unixsock plugin caused it not to set
3 the permission on the socket as documented in the manpage. Thanks to
4 Evgeny Chukreev for fixing this issue.
5 * collectd: The documentation has been improved.
7 2007-12-28, Version 4.2.3
8 * sensors plugin: Updated the plugin to build and work with version 3
9 of the libsensors library.
11 2007-12-15, Version 4.2.2
12 * nginx plugin: Incorrect comparison of strings lead to a segfault
13 when using the plugin. Thanks to Saulius Grigaliunas for fixing
15 * logfile plugin: The config option `Timestamp' was handled
16 incorrectly and basically always active. Thanks to Luke Heberling
19 2007-11-08, Version 4.2.1
20 * tcpconns plugin: Don't complain about a missing file if IPv6 is not
22 * snmp plugin: Fix a memory leak.
24 2007-10-27, Version 4.2.0
25 * collectd: The new config option `Include' lets you include other
26 configfiles and thus split up your config into smaller parts. This
27 may be especially interesting for the snmp plugin to keep the data
28 definitions separate from the host definitions.
29 * ipvs plugin: The new `ipvs' plugin collects IPVS connection statistics
30 (number of connections, octets and packets for each service and
31 destination). Thanks to Sebastian Harl for this plugin.
32 * memcached plugin: The new `memcached' plugin connects to a memcached
33 daemon process and collects statistics of this distributed caching
34 system. Thanks to Antony Dovgal for contributing this plugin.
35 * nginx plugin: The new `nginx' plugin reads the status page of an
36 nginx daemon and saves the handled connections and requests.
37 * perl plugin: Many changes, including the added `EnableDebugger'
38 config option which lets you debug your Perl plugins more easily.
39 * rrdtool plugin: Use the thread-safe RRD-library if available. Try to
40 be more thread-safe otherwise by locking calls to the library.
41 * snmp plugin: Added the options `Scale' and `Shift' to Data-blocks to
42 correct the values returned by SNMP-agents. If a <data> block is
43 defined as `table' the instance is now optional. The sequence number
44 is used as the type-instance in this case. The new `InstancePrefix'
45 option allows to add arbitrary prefixes to the type-instance.
46 * tcpconns plugin: The new `tcpconns' plugin collects the number of
47 certain TCP connections and what state they're in. This can be used
48 to see how many connections your FTP server has to handle or how
49 many outgoing connections your mailserver has open.
51 2008-01-11, Version 4.1.6
52 * unixsock plugin: A bug in the unixsock plugin caused it not to set
53 the permission on the socket as documented in the manpage. Thanks to
54 Evgeny Chukreev for fixing this issue.
55 * collectd: The documentation has been improved.
57 2007-12-27, Version 4.1.5
58 * rrdtool plugin: Fix a memory leak that only occured in very-low-
60 * sensors plugin: Updated the plugin to build and work with version 3
61 of the libsensors library.
63 2007-11-08, Version 4.1.4
64 * Build system: Improve detection of the rrd library, especially if
65 it's in a non-standard location.
66 * Build system: A bug when parsing the argument for
67 `--with-libnetsnmp' has been fixed.
68 * collectd: Implement `strerror_r' if the libc doesn't provide it.
69 * rrdtool plugin: Fix a bug in the shutdown sequence that might cause
70 a deadlock or delay when shutting down the daemon.
71 * snmp plugin: Fix a memory leak.
73 2007-10-24, Version 4.1.3
74 * collectd: A build issue under Solaris has been resolved by renaming
76 * rrdtool plugin: Use the thread-safe RRD-library if available. Try to
77 be more thread-safe otherwise by locking calls to the library.
79 2007-09-28, Version 4.1.2
80 * apcups plugin: Fix reporting of the `load percent' data.
81 * wireless plugin: Correct the handling of cards returning signal and
82 noise quality as percentage.
83 * perl plugin: Fix a possible buffer overflow in get_module_name().
84 * build system: Further improve the detection of libraries.
85 * netlink plugin: Build issues under some older versions of the Linux
86 includes (i. e. Debian Sarge) have been fixed.
87 * snmp plugin: Fix a potential segfault when a host times out. Add
88 support for the `timeticks' type.
90 2007-09-12, Version 4.1.1
91 * Build system: The detection of `libnetlink' has been improved.
92 * collectd: The documentation has been fixed in numerous places.
93 * exec plugin: Setting the group under which to run a program has been
95 * collectd: The `sstrerror' function was improved to work correctly
96 with the broken GNU version of `strerror_r'.
97 * collectd: Write an error message to STDERR when loading of a plugin
99 * apcups plugin: Fix the `types' used to submit the values: They still
100 has an `apcups_' prefix which doesn't work anymore.
101 * rrdtool plugin: Create new RRD-files with the `begin' time set to
102 whatever the client thinks is `now'..
104 2007-09-01, Version 4.1.0
105 * Build system: The build system has been changed to automatically
106 disable all plugins, which are missing dependencies. The dependency
107 checking has been removed from the plugins themselves to remove
109 * Flexible interval: The interval of collected data is now sent along
110 with the data itself over the network, so that the interval-settings
111 of server and clients no longer needs to match.
112 * netlink plugin: The new `netlink' plugin connects to the Linux
113 kernel using a netlink socket and uses it to query information about
114 interfaces, qdiscs and classes.
115 * rrdtool plugin: The cache is now dumped to disk in an extra thread
116 to not block data collection.
117 * snmp plugin: The new `snmp' plugin can read values from SNMP enabled
118 network devices, such as switches, routers, thermometers, rack
119 monitoring servers, etc. The collectd-snmp(5) manpage documents this
121 * unixsock plugin: Added the `LISTVAL' command.
122 * xmms plugin: The new `xmms' plugin graphs the bitrate and frequency
123 of music played with xmms.
125 2007-09-28, Version 4.0.9
126 * apcups plugin: Fix reporting of the `load percent' data.
127 * wireless plugin: Correct the handling of cards returning signal and
128 noise quality as percentage.
129 * perl plugin: Fix a possible buffer overflow in get_module_name().
131 2007-09-12, Version 4.0.8
132 * collectd: The `sstrerror' function was improved to work correctly
133 with the broken GNU version of `strerror_r'.
134 * collectd: Write an error message to STDERR when loading of a plugin
136 * apcups plugin: Fix the `types' used to submit the values: They still
137 has an `apcups_' prefix which doesn't work anymore.
138 * rrdtool plugin: Create new RRD-files with the `begin' time set to
139 whatever the client thinks is `now'..
141 2007-08-26, Version 4.0.7
142 * documentation: Some typos have been fixed and some information has
144 * build system: Many fixes for detecting libraries in unusual places,
145 such as on RedHat systems. The affected libraries are `libcurl',
146 `libmysql', and `libupsclient'.
147 * network plugin: Allow the `Port' option to be specified as a number
148 (i. e. without quotes).
149 * nut plugin: A fix allows linking the nut plugin against
150 libupsclient, version >= 2.2.0.
151 * processes plugin: Fix a potential segmentation fault.
153 2007-07-30, Version 4.0.6
154 * sensors plugin: Fix the ignorelist functionality: Only the `type
155 instance' was used to match against the list, but the documentation
156 told otherwise. This release fixes the code, so it complies with the
158 * syslog plugin: Call `openlog' right when the plugin is loaded, so
159 configuration messages will end up in the logging facility.
160 * conrtib/fedora: The contributed specfile for Fedora has been
163 2007-07-05, Version 4.0.5
164 * Portability: More fixes for OpenBSD have been included.
166 2007-06-24, Version 4.0.4
167 * cpu plugin: Fixed the Solaris code.
168 * dns plugin: Fixed a build issue for OpenBSD.
169 * interface plugin: Fixed the Solaris code.
170 * load plugin: Fixed the alternative `/proc' Linux code.
171 * memory plugin: Fixed the Solaris code.
172 * oconfig: Don't require `-lfl' anymore.
174 2007-06-19, Version 4.0.3
175 * cpu plugin: Fix the Darwin / Mac OS X code.
176 * ping plugin: Use the return value of `getpid', not its address.
177 * csv, rrdtool plugin: Fixed a bug that prevented an buffer to be
178 initialized correctly.
179 * configure: Added `--with-nan-emulation' to aid cross compilation.
181 2007-06-12, Version 4.0.2
182 * hddtemp and ntpd plugin: Corrected the parsing of port numbers when
183 they're given in numerically form.
185 2007-06-07, Version 4.0.1
186 * iptables plugin: A bug in the configuration routine has been fixed.
187 Setting a comment in the configfile will no longer cause a
190 2007-06-03, Version 4.0.0
191 * collectd: The plugin-infrastructure has been changed to allow for
192 more types of plugins, namely `write' and `log' plugins.
193 * collectd: The read-function has been changed to read many plugins in
194 parallel, using threads. Thus, plugins generally need to use
195 thread-safe functions from now on.
196 * collectd: The '-t' command line options allows to perform syntax tests
197 of the configuration file and exit immediately.
198 * csv plugin: The new `csv' plugin handles output to `comma separated
200 * rrdtool plugin: The new `rrdtool' plugin handles output to
201 RRD-files. Data can be cached to combine multiple updates into one
202 write to increase IO-performance.
203 * network plugin: The new `network' plugin handles IO via the network.
204 It implements a different, much more extensible protocol which can
205 combine many values in one packet, decreasing the number of UDP-
206 packets being sent. It can read from and send to the network and
207 with the appropriate configuration even forward packets to other
209 * unixsock plugin: The new `unixsock' plugin provides an interface to
210 communicate with the daemon while it is running. Right now the
211 commands `GETVAL' and `PUTVAL' are implemented, but more are to
213 * perl plugin: The new `perl' plugin allows you to write extensions
214 for collectd in the scripting-language Perl.
215 * logfile plugin: The new `logfile' plugin writes logmessages to files
217 * syslog plugin: The new `syslog' plugin sends logmessages to the
218 system's syslog daemon.
219 * entropy plugin: The new `entropy' plugin collects the amount of
220 entropy currently being available to the system.
221 * exec plugin: The new `exec' plugin forks child processes and reads
222 back values provided by the forked processes.
223 * iptables plugin: The new `iptables' plugin reads counters from
224 iptables rules. Thanks to Sjoerd van der Berg for contributing this
226 * irq plugin: The new `irq' plugin collects the IRQ-counters. Thanks
227 to Peter Holik for contributing this plugin.
228 * nut plugin: The new `nut' plugin connects the upsd of the `network
229 ups tools' and reads information about the connected UPS.
230 * apache plugin: Support for lighttpd's `BusyServers' (aka.
231 connections) field was added by Florent Monbillard.
232 * collectd-nagios: The new `collectd-nagios' binary queries values
233 from collectd, parses them and exits according to Nagios-standards.
234 * manpages: The manpages have been improved a lot.
236 2007-09-28, Version 3.11.7
237 * wireless plugin: Correct the handling of cards returning signal and
238 noise quality as percentage.
240 2007-08-31, Version 3.11.6
241 * processes plugin: Fix a potential segmentation fault.
243 2007-05-29, Version 3.11.5
244 * configure: Added `AC_SYS_LARGEFILE' for LFS.
245 * ntpd plugin: Fix a potential buffer overflow.
246 * processes plugin: Fix a bug when run under Linux 2.4. All processes
247 were accounted as `zombies'.
249 2007-04-10, Version 3.11.4
250 * dns plugin: Change the order of includes to make the plugin compile
253 2007-03-30, Version 3.11.3
254 * configure: Have the configure-script define `HAVE_LIBKSTAT' instead
255 of the unused `COLLECT_KSTAT'.
257 2007-02-11, Version 3.11.2
258 * plugin: Catch NULL-pointer and try to fix them. Otherwise the
259 NULL-pointer may have been passed to `printf' which causes a
260 segfault with some libcs.
262 2007-02-10, Version 3.11.1
263 * df plugin: Some wrong defines have been fixed so the plugin works
265 * dns plugin: The usage of a struct has been fixed to work with
267 * processes plugin: Some missing defines have been added so the plugin
268 compiles cleanly under FreeBSD and presumably other UNIXes.
270 2006-12-22, Version 3.11.0
271 * collectd: The new command line option `-P' makes it easier for
272 distributors to change the location of PID-files.
273 * collectd: The daemon shuts down faster now which makes it easier to
274 write init.d-scripts for it.
275 * apache plugin: Increase the buffersize to 16k, because the 4k buffer
276 caused problems every now and then.
277 * df plugin: New config options allow to ignore certain mountpoints,
278 filesystem types or devices.
279 * dns plugin: The new dns plugin uses `libpcap' to capture DNS traffic
280 and interprets it. It collects traffic as well as qtype, opcode and
282 * email plugin: Sebastian Harl has contributed this plugin which
283 counts received mails in categories (e. g. ham, spam, virus), spam
284 score (as given by SpamAssassin) and check types.
285 * mbmon plugin: Flavio Stanchina has contributed this plugin which
286 uses `mbmon' to gather information from sensors on the motherboard.
287 * processes plugin: Collect detailed statistics for configured
288 processes, that's process and thread count, CPU usage, resident
289 segment size and pagefaults.
290 * multimeter plugin: Peter Holik contributed a new plugin which
292 * sensors plugin: Lubos Stanek has put much effort into improving this
293 plugin, including `extended naming', collection of voltage values
294 and the possibility to ignore certain values.
296 2006-12-21, Version 3.10.4
297 * Max Kellermann has identified a bug in the server routine: When
298 opening a socket fails the daemon will (re)try opening the socket in
299 an endless loop, ultimately leading to a `EMFILE' error.
301 2006-11-04, Version 3.10.3
302 * Lubos Stanek has identified a bug in the ntpd-plugin: When the
303 ntpd's reply was sent in more than one packet, the buffer size was
304 calculated incorrectly, resulting in the reading of uninitialized or
307 2006-11-01, Version 3.10.2
308 * The sample config file has been improved.
309 * Errors in the manpages have been corrected.
310 * The ping-plugin now adds hosts during initialization, not during
311 startup. This speeds up startup when no network connectivity is
312 available. Also, the hosts are being added later when the network is
314 * Improved BSD-support for the df-plugin.
315 * Fixed syntax errors in the swap-plugin for Mac OS X.
316 * Fix a wrong structure being passed to `getnameinfo' in the ntpd-
318 * Don't disable the mysql-plugin if connecting to the database fails
319 during initialization. Instead, try again in increasing intervals.
321 2006-07-19, Version 3.10.1
322 * A bug in the apcups plugin was fixed: Is the plugin is loaded, but
323 the apcups cannot be reached, unconnected sockets will pile up and
324 eventually lead to `Too many open files' errors.
326 2006-07-09, Version 3.10.0
327 * The `disk' plugin has been ported to Darwin.
328 * The `battery' plugin should work on many Apple computers now.
329 * The `traffic' plugin can now ignore certain interfaces. Also,
330 statistics for sent/received packets and errors have been added.
331 * A plugin to monitor APC UPSes using `apcupsd' has been added. Thanks
332 to Anthony Gialluca for contributing this plugin and providing me
333 with a test environment :)
334 * A plugin for monitoring an NTP instance and the local clock drift
337 2006-06-25, Version 3.9.4
338 * The Solaris code in the `swap' plugin has been changed to reflect
339 the numbers returned by `swap -s'. Thanks to Christophe Kalt for
341 * The debugging system has been fixed to work with the Sun libc.
342 * When built without librrd the variable `operating_mode' could be
343 uninitialized. Thanks to David Elliot for reporting the bug.
345 2006-06-01, Version 3.9.3
346 * Fixed the ping-plugin under FreeBSD and Mac OS X. Potentially other
347 operating systems also profit from the changes, but I wasn't able to
349 * Changed the build system to find the netinet-includes under FreeBSD
350 and therefore successfully build the `liboping' library there.
352 2006-05-09, Version 3.9.2
353 * Applied a patch to the `liboping' library. Due to a bug in the
354 sequence checking the `ping' plugin stopped working after
355 approximately 7.6 days.
357 2006-05-09, Version 3.8.5
358 * Applied a patch to the `liboping' library. Due to a bug in the
359 sequence checking the `ping' plugin stopped working after
360 approximately 7.6 days.
362 2006-04-21, Version 3.9.1
363 * Build issues with Solaris and possible other architectures have been
365 * Problems when building the `apache'-plugin without `libcurl' have
367 * A bug in the `ping' plugin has been fixed. Sorry folks.
369 2006-04-02, Version 3.9.0
370 * A plugin to monitor the Apache webserver has been added.
371 <http://httpd.apache.org/>
372 * A plugin to collect statistics about virtual servers using VServer.
373 <http://linux-vserver.org/> Thanks to Sebastian Harl for writing
375 * A plugin for wireless LAN cards has been added. It monitors signal
376 strength, link quality and noise ratio..
377 * A plugin for Apple hardware sensors has been added.
378 * An option to compile collectd with different `step' and `heartbeat'
379 settings has been added. The size of RRAs is no longer static but
380 calculated based on the settings for `step' and `width'.
381 * The `ping' plugin can now be configured to use a certain TTL.
382 * A plugin to monitor the hardware sensors of Apple computers has been
384 * The plugins `cpu', `memory', `processes' and `traffic' have been
385 ported to Mach/Darwin (Mac OS X).
386 * The `log mode' has been contributed by Christophe Kalt. It writes
387 the data into text files rather than RRD files.
389 2006-04-09, Version 3.8.4
390 * Applied patch by Vincent Stehlé which improves the disk-name
391 resolution in the `hddtemp' plugin for Linux systems.
393 2006-04-02, Version 3.8.3
394 * Applied a patch by James Byers: The MySQL plugin was not working
395 with MySQL 5.0.2 or later.
397 2006-03-14, Version 3.8.2
398 * `utils_mount.c' has been changed to not use the `MNTTAB' defined by
399 the GNU libc, because it points to `/etc/fstab' rather than
402 2006-03-13, Version 3.8.1
403 * Fixes for building collectd under FreeBSD, Mac OS X and Solaris.
404 * Fixes in the debian `postinst' and `init.d' scripts.
406 2006-03-09, Version 3.8.0
407 * The `ping' plugin no longer uses `libping' but a self written
408 library named `liboping'. With this library it's possible to ping
409 multiple IPv4 and IPv6 addresses and hostnames - in parallel.
411 2006-02-18, Version 3.7.2
412 * A simple bug in the `battery' plugin has been fixed. It should now
413 work with ACPI based batteries as well. Thanks to Sebastian for
415 * Fixing a bug that prevented collectd to be built without librrd.
416 Thanks to Werner Heuser for reporting it.
418 2006-02-04, Version 3.7.1
419 * The new network code has been improved to build with older versions
421 * Fix in `libping' sets the ICMP sequence on outgoing packets. Thanks
422 to Tommie Gannert for this patch.
424 2006-01-30, Version 3.7.0
425 * The `battery' plugin has been added. It collects information about
427 * The MySQL plugin has been improved: It now writes two more RRD
428 files, `mysql_qcache.rrd' and `mysql_threads.rrd'.
429 * The `cpufreq' plugin now reads another file since the file it did
430 read so far causes much overhead in the kernel. Also, you need root
431 to read the old file, but not to read the new one.
432 * The `hddtemp' plugin can now be configured to connect to another
433 address and/or port than localhost.
434 * The `df' plugin now prefers `statvfs' over `statfs'.
435 * The network code has been rewritten. collectd now supports unicast
436 and multicast, and IPv4 and IPv6. Also, the TTL of sent packages can
437 be set in the configfile.
439 2006-01-24, Version 3.6.2
440 * Due to a bug in the configfile handling collectd wouldn't start in
441 client mode. This released fixes this.
443 2006-01-20, Version 3.6.1
444 * Due to a bug in `configure.in' all modules and the binary were
445 linked against `libmysqlclient'. This issue is solved by this
448 2006-01-17, Version 3.6.0
449 * A config file has been added. This allows for loading only specific
451 * A `df' plugin has been added.
452 * A `mysql' plugin has been added.
453 * The `ping' plugin doesn't entirely give up hope when a socket error
454 occurred, but will back of and increase the intervals between tries.
456 2006-01-21, Version 3.5.2
457 * Fixed yet another bug in the signal handling.. Stupid typo..
458 * Improved the ping plugin to not give up on socket errors (backport
461 2005-12-18, Version 3.5.1
462 * The PID-file is now deleted correctly when shutting down the daemon.
463 * SIGINT and SIGTERM are now handled correctly.
465 2005-12-16, Version 3.5.0 (Revision 326)
466 * A bug in the `load' module under Solaris has been fixed.
467 * The `users' module has been contributed by Sebastian Harl. It counts
468 currently logged in users.
469 * The CPU module now works under FreeBSD without the use of
470 `libstatgrab', however SMP support is missing.
471 * The default directories for the RRD files and the PID file now
472 depend on the compile time setting of `localstatedir'.
474 2005-11-15, Version 3.4.0 (Revision 236)
475 * A PID-file is written to /var/run upon startup. Thanks to `Tommie'
476 from gentoo's bugzilla for writing the patch.
477 * The build dependency for librrd has been removed. Binaries built
478 without librrd are client-only and will multicast their value as
479 with the `-c' argument.
480 * A patch by Peter Holik adds a module for monitoring CPU frequencies.
481 * The newly introduced `-f' switch prevents daemon initialization
482 (forking, closing standard filehandles, etc.) Thanks to Alvaro
483 Barcellos for this patch.
485 2005-11-04, Version 3.3.0 (Revision 216)
486 * New modules have been added:
487 - `serial', for monitoring traffic on the serial interfaces
488 - `nfs', for graphing NFS procedure calls
489 - `tape', traffic from/to tape devices
490 * The memory.rrd now accepts more than 4Gig of memory.
492 2005-10-26, Version 3.2.0 (Revision 200)
493 * Support for graphing the processes has been added (thanks to Lyonel
495 * If reading from hddtemp fails collectd will increase the time
496 between polls up to one day.
497 * The init.d files have been improved.
498 * Problems with the spec file have been fixed.
500 2005-10-16, Version 3.1.0 (Revision 194)
501 * Added the `setsid' syscall to the startup code.
502 * Support for hddtemp has been added (thanks to Vincent Stehlé)
504 2005-09-30, Version 3.0.0 (Revision 184)
505 * The ability to send/receive data to/from the network (think
506 multicast) has been added.
507 * Modules have been split up into shared libraries can be loaded at
508 runtime. The biggest advantage is that the core program doesn't need
509 to be linked against an external library.
510 * A patch by George Kargiotakis has been applied: It fixes the sensors
511 behaviour then more than one sensor is being queried.
513 2005-09-16, Version 2.1.0 (Revision 172)
514 * A module for swap statistics has been added.
516 2005-09-09, Version 2.0.0 (Revision 135)
517 * Filenames can no longer be configured at program startup. The only
518 options as of this version are the directory and ping hosts.
519 * CPU statistics now include Wait-IO. If provided under Linux IRQ and
520 Soft-IRQ statistics are added to `System'.
521 * Diskstats now collect read and write bytes, not sectors.
522 * Ping statistics can now be collected for more than one host. There
523 is no default any more: If no host is given no host will be pinged.
524 * A self-written patch for libping has been applied so it builds
527 2005-09-01, Version 1.8.1 (Revision 123)
528 * Much improved configure-script: libraries and features may now be
530 * More detailed warnings/error messages when RRD update fails.
532 2005-08-29, Version 1.8.0:
533 * Support for collecting disk statistics under Solaris.
535 2005-08-25, Version 1.7.0:
536 * Support for libstatgrab[1] for load, memory usage and network
537 traffic. CPU- and disk-usage are not (yet) supported, since
538 libstatgrab returns insufficient information. I will contact the
540 * Improved the CPU-initialization code for Solaris. Apparently CPUs
541 aren't necessarily counted linear which is now handled correctly.
542 [1]: http://www.i-scream.org/libstatgrab/
544 2005-08-21, Version 1.6.0:
545 * Basic support for Solaris: System load and cpu-usage can be
546 collected under Solaris, too. Other stats will follow later.
547 * Many fixes in the autoconf-script
548 * Collection/Museum scripts have been added under contrib/museum
549 * collectd may now be started in unprivileged mode, though ping
550 statistics will not work.
552 2005-07-17, Version 1.5.1:
553 * Diskstats-RRDs now use major/minor for naming. Some systems have
554 weird strings as disk-names..
556 2005-07-17, Version 1.5:
557 * A new module, diskstats, has been added. It collects information
558 about the disks and partitions.
560 2005-07-11, Version 1.4.2:
561 * The meminfo module has been changed to work with more platforms
562 and/or kernel versions.
564 2005-07-10, Version 1.4.1: Correct traffic stats
565 * The traffic rrd-file is now created with DS-type `COUNTER' which I
566 forgot to correct when I changed that module.
568 2005-07-09, Version 1.4: More traffic stats
569 * Traffic is now collected for all interfaces that can be found
570 * Temperature-statistics are read from lm-sensors if available
572 2005-07-08, Version 1.3: CPU stats
573 * Collecting CPU statistics now
575 2004-07-12, Version 1.2: Using syslog
576 * collectd is now using the syslog facility to report errors, warnings
578 * The default directory is now /var/db/collectd
580 2004-07-10, Version 1.1: Minor changes
581 * Nothing really useful to say ;)
583 2004-07-09, Version 1.0: Initial Version
584 * The following modules are provided: