[collectd-changes] collectd, the system statistics collection daemon: Changes to 'ad/arc'

[Florian Forster]

Rebased ref, commits from common ancestor:
commit e24ef939e4b329ea9a13b2303c8f81db46cd0982
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sun Aug 2 12:07:03 2009 +0200

    arc plugin: Remove a left-over `printf'.

commit c7fdedf576fd98b6a91128a07ea85bf2a138e285
Author: Anthony Dewhurst <dewhurst at gmail.com>
Date:   Thu Jul 30 23:44:00 2009 +0100

    ARC stats plugin
    
    Get stats for ZFS's Adaptive Replacement Cache.
    
    Signed-off-by: Florian Forster <octo at leeloo.lan.home.verplant.org>

commit 131eda63f8958e63fb317f9584776b1311e49552
Merge: 8b71c571461f4e893bafbc041c3a44975439b282 56bcb4af5888121cef3a3c6bab1084bf225aa012
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sat Aug 29 10:45:38 2009 +0200

    Merge branch 'ps/http'

commit 56bcb4af5888121cef3a3c6bab1084bf225aa012
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sat Aug 29 10:39:09 2009 +0200

    write_http plugin: Implement the usual SSL options.

commit cf7c7d8538822a2ad09021adf1a919b7ce1892c0
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sat Aug 29 10:33:19 2009 +0200

    write_http plugin: Implement support for multiple destinations.

commit d3a409674a26075fe127e6800e2bc96ba389c102
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sat Aug 29 08:23:29 2009 +0200

    collectd.conf(5): Updated to reflect the renaming of the “write_http” plugin.

commit 64d0aa3fd682b4920751c2740a393437e3b8099b
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sat Aug 29 08:07:21 2009 +0200

    write_http plugin: Rename the “http” plugin to “write_http”.

commit 8b71c571461f4e893bafbc041c3a44975439b282
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Thu Aug 27 09:46:09 2009 +0200

    collectd.conf(5): Renamed the couchdb plugin to curl_json here, too.

commit a30d7659c8ea291877708b5b1bb36756223e8c05
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Thu Aug 27 09:06:16 2009 +0200

    curl_json plugin: Renamed the “couchdb” plugin to “curl_json”.
    
    On Thu, Aug 20, 2009 at 10:31:22AM -0700, Doug MacEachern wrote:
    > Wanted to bring this up before 4.8..
    > When I first started on the couchdb plugin, there were metrics
    > specific to couchdb, but ended up making it generic and the metrics
    > are all specified in the config.  Since then, I've looked at Dynomite
    > which has its own set of metrics exposed the same way:
    > http://gist.github.com/137771
    > Also noticed Hadoop 0.21 daemons now support: "/metrics?format=json to
    > retrieve the data in a structured form.", but haven't had a chance to
    > try yet.  I'm sure there's more too.  So I'm wondering if 'couchdb'
    > should be renamed to something more generic, 'json' or 'yajl'  maybe?
    > And/or pushing the curl/yajl code out to util functions, then add the
    > couchdb specific metrics to the couchdb plugin.  Then also use the
    > util functions for dynomite, hadoop, etc., specific plugins. Thoughts?

commit 72a6ea58410584de00e8e64356d46b6540f91747
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sun Aug 23 12:37:43 2009 +0200

    configure.in: Check for the <linux/wireless.h> header.

commit 1375c2138696433ea9ce4134e91569eec33e765e
Author: Aman Gupta <aman at tmm1.net>
Date:   Sat Aug 22 10:04:10 2009 +0200

    network plugin: Free dynamically allocated buffers when appropriate.
    
    Signed-off-by: Florian Forster <octo at huhu.verplant.org>

commit 2c50a9c70721d4c8230c7a9bc63770e56578fb81
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Fri Aug 21 13:14:47 2009 +0200

    configure.in: Sort the status output alphabetically.

commit a02bbe189bdf805f48ab5c6d12b60373c059c0cf
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Fri Aug 21 13:03:10 2009 +0200

    http plugin: Update the copyright notice and AUTHORS file.

commit 55b1cf691749105608964c051fc2936711cf23db
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Fri Aug 21 12:45:54 2009 +0200

    http plugin: Small fixes for the buffer handling.
    
    Don't actually send anything when the buffer is empty. Initialize the
    buffer in the ‘init’ function.

commit 8a9d8d59aa93ac08b0be988b4a9d5c639fcc9a9e
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Fri Aug 21 11:34:39 2009 +0200

    http plugin: Implement a `flush' callback.

commit 635bcdf70a2662701ced021296c2bd237dfdb33d
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Fri Aug 21 11:34:05 2009 +0200

    http plugin: http_write: Clean-up.
    
    A couple of bugs have been fixed in the process. One error handling path
    didn't release a mutex, for example. Also, the buffer may have been sent
    truncated.

commit 1e1ab2bb55d4056048b8a6d73661a44e62f2ce14
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Fri Aug 21 11:24:24 2009 +0200

    http plugin: Comment in the call to `curl_easy_perform'.

commit 3cb2eec6754b18cb42be315d07e1a70bdbf40202
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Fri Aug 21 11:23:30 2009 +0200

    http plugin: http_value_list_to_string: Clean-up.

commit 099f87e0154f85daac03223ca30f59d004a14f9d
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Fri Aug 21 10:23:30 2009 +0200

    http plugin: Use the `FORMAT_VL' macro.

commit 9870ddc3e717d5a715092dabea12854f29353199
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Fri Aug 21 10:22:59 2009 +0200

    http plugin: Don't convert COUNTER values to rates.

commit da112d8fecbf1a2ca4123907cdbf3debb1e3de7d
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Fri Aug 21 10:22:38 2009 +0200

    http plugin: Remove an unused variable.

commit 119c804f242e19e2ff7ce516b31cac7b1c3c9039
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Fri Aug 21 09:21:19 2009 +0200

    http plugin: Rename the “Location” option to “URL”.
    
    That's more in line with other plugins.

commit e98d39306243c61a69668440556facf37977bfa2
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Fri Aug 21 09:13:55 2009 +0200

    http plugin: Remove tailing whitespace.

commit 9ff7c5a40d155289ac607b8a962b5eac13907b39
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Thu Jul 9 10:33:48 2009 -0600

    http plugin: Add entries to collectd.conf

commit 896f1f22ffd9753d5ecc50c66bd2e6d380b3981d
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Thu Jul 9 10:31:49 2009 -0600

    http plugin: Man page about config vars

commit f385de1e9f7799ff3af6347bd8f30506b9036c4e
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Thu Jul 9 10:27:14 2009 -0600

    http plugin: Put the makefile stuff in the right place alphabetically

commit 8dc963f846c51d8ba173587a136231c2b3646afc
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Wed Jul 8 17:36:39 2009 -0600

    http plugin: Make the output match the PUTVAL plain-text protocol

commit f8c2c2e29ee86f3c5b7565547e57d29732576277
Author: Florian Forster <sifnfors at informatik.stud.uni-erlangen.de>
Date:   Tue Jul 7 18:31:45 2009 +0200

    configure.in: Add the http plugin to the status output.

commit 925fec2beba08825c5986a5d031f9126d111055a
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Mon Jul 6 22:47:48 2009 +0200

    http plugin: Remove trailing whitespace.

commit 85e490aca52f057b98e50ae0612751c82878a51b
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Mon Jun 22 15:06:25 2009 -0600

    http plugin: Better error handling, and flush before shutdown

commit 6fc85b952084c71e040bec17740b2811c5574f01
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Mon Jun 22 14:22:59 2009 -0600

    http plugin: Remove some debugging info

commit c5f030fa12d743cbcf9d2d53f06e1621faa3a32d
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Mon Jun 22 14:10:17 2009 -0600

    http plugin: POST when a 4K buffer is nearly full

commit 6f618e6759257431d5ab266c1676dd53ed9d097a
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Sat Jun 20 16:54:18 2009 -0600

    http plugin: Set mutex around curl, so we only perform once at a time

commit 354ae76fa3ca0c4dbb20c36c7f52d5d4d391dba9
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Wed Jun 17 10:49:02 2009 -0600

    http plugin: Fix a memory leak by cleaning up the curl handles

commit 4701c950775572616456139ac65539924e1cdb94
Author: Erik Cunningham <ewc at absolute-performance.com>
Date:   Wed Jun 17 10:24:24 2009 -0600

    http plugin: don't copy the error buffer

commit b835268fbda571674963a41218b2cc623eb1f535
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Sun Jun 14 20:22:12 2009 -0600

    http plugin: Dont hold open curl connections. It ties up apache

commit d9392089cfe08ad092367b2dca9054f413ccb529
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Sun Jun 14 19:52:18 2009 -0600

    http plugin: Initialze curl every time, to we don't clobber things

commit 968d1bd9a97944a52820b6d542089765b59f9bf2
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Sun Jun 14 18:43:50 2009 -0600

    http plugin: Separate values into multiple lines

commit 2b9ba6a970b33397dc3b58b22b4c84e39ab53378
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Fri Jun 12 16:46:53 2009 -0600

    http plugin: it works, i think

commit 86928d3feaa0ba8f85dc3cbe0d3c34219d201a33
Author: Paul Sadauskas <psadauskas at gmail.com>
Date:   Tue Jul 7 18:38:36 2009 +0200

    http plugin: Start in http plugin that can output csv to stdout

commit 92d6e909a472ce3c8b5edad9106debee7d2bf28f
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Thu Aug 20 17:21:33 2009 +0200

    java bindings: GenericJMX: Implement user/password authentication.

commit 08d06d7d5c2d3f9f52c6db183d7bd0678440906f
Author: Aman Gupta <aman at tmm1.net>
Date:   Thu Aug 20 11:53:22 2009 +0200

    network plugin: Remove a now invalid assertion.
    
    Signed-off-by: Florian Forster <octo at leeloo.lan.home.verplant.org>

commit 36403bcaa8627bf41d209496ad34ddcda0f376e0
Author: Florian Forster <octo at noris.net>
Date:   Wed Aug 19 17:50:37 2009 +0200

    contrib/GenericJMX.conf: Fix some typos and improve type instances.

commit 2aa2512eff8064e5e2a9c71c2c32feec5d027f35
Author: Florian Forster <octo at noris.net>
Date:   Wed Aug 19 17:15:55 2009 +0200

    src/types.db: Sort alphabetically.

commit 08884a5cd1038e151a1ae34733aaee48ff06a09b
Author: Florian Forster <octo at noris.net>
Date:   Wed Aug 19 17:15:08 2009 +0200

    contrib/GenerixJMX.conf: Add some example configuration for Tomcat.
    
    Currently configured for tomcat are:
    
     * Received / sent octets for each request processor.
     * Number of requests.
     * Time spent processing queries.
     * Number of total/busy threads.
    
    The first three values are available as a summary for a request processor
    as well as detailed (for each thread).
    
    This configuration is yet untested and may contain obvious typos!

commit ca1466e65cd71e9b286e608a3beb31289b2625e6
Author: Florian Forster <octo at noris.net>
Date:   Wed Aug 19 17:01:30 2009 +0200

    java bindings: GenericJMX plugin: Implement the ‘InstanceFrom’ option for <value /> blocks.

commit ac634492ce8078c0fc39f99de513d9f3ccb2f2f9
Author: Florian Forster <octo at huhu.verplant.org>
Date:   Wed Aug 19 11:39:41 2009 +0200

    swap plugin: Fix the ‘swap_submit’ invocation of non-Linux implementations.
    
    And replace all the ‘unsigned long long’s with ‘derive_t’.

commit c59c73bee244b78191d0b365188bd4f947521737
Author: Stefan Völkel <bd at bc-bd.org>
Date:   Mon Aug 17 13:50:17 2009 +0000

    added swapin/out support to swap plugin
    
    Signed-off-by: Florian Forster <octo at huhu.verplant.org>

commit c35203c82560eba66bb901aa22c5170fb8c389fb
Merge: 4151d975ca93af4570a1ca97a0408ba446ea7485 2bca2a511c1636bf448112d081d115ebc01b5ed4
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Tue Aug 18 21:39:03 2009 +0200

    Merge branch 'mg/jitter'

commit 2bca2a511c1636bf448112d081d115ebc01b5ed4
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Tue Aug 18 21:38:01 2009 +0200

    collectd.conf(5): Document the new `RandomTimeout' option.

commit d278a40cab2bcb6bb0387176d087ce13cd3e843b
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Tue Aug 18 21:23:21 2009 +0200

    rrdtool plugin: Optimize away the ‘random_timeout_mod’ variable.

commit bdcac4078f8052b8e4f425a1e5aea3957551e0d3
Author: Mariusz Gronczewski <xani666 at gmail.com>
Date:   Tue Aug 18 21:18:06 2009 +0200

    rrdtool plugin: Call rand(3) less often.
    
    2009/8/18 Florian Forster <octo at verplant.org>:
    > Hi Mariusz,
    >
    > On Mon, Aug 17, 2009 at 02:20:29AM +0200, Mariusz Gronczewski wrote:
    >> i was thinking how to "spread out" writes to rrd files a bit, because
    >> now its big spike every CacheTimeout or little smaller "square" on
    >> graph if u use WritesPerSecond.
    >
    > in general I like your patch, thank you very much for posting it :)
    > I have some doubts about calling rand() in such a busy place though,
    > since getting random numbers is potentially costly. Also, rand(3) is not
    > thread-safe, though I don't think that's really an issue for us.
    
    Yeah good point, but that would be probably noticable on very slow
    (like PIII 800 slow) machines with tons of rrd, and then machine would
    run out of disk bandwidth first.
    
    > Maybe a solution would be to add a ‘random_timeout’ member to the
    > ‘rrd_cache_t’ struct, too. This member is then set when creating the
    > entry and set again right after the values have been removed. That way
    > rand(3) is only called once for each write instead of calling for every
    > check.
    Yeah, very good idea, i didnt thougth about that (well tbh. i didnt
    looked much into "interiors" of rrdtool plugin). Ive implemented it in
    attached patch, so far ive been testing it for about 1 hour and works
    pretty well.
    
    > As an interesting sidenote: With the above approach, the random write
    > times are distributed “uniform”, i. e. every delay from 0 to max-1
    > seconds has the same probability. With your code, I think the actual
    > time a value is written follows a “normal” distribution (you know, that
    > famous bell curve). So I'd expect the above approach to spread the value
    > quicker.
    
    Yup, exactly as u said, its much quicker like that.
    Im wondering how config variable should be called, name
    "RandomTimeout" dont mean anything useful ("random timeout of what?"),
    maybe TimeoutSpread ? RandomizeTimeout ?

commit 4151d975ca93af4570a1ca97a0408ba446ea7485
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Tue Aug 18 12:23:53 2009 +0200

    src/Makefile.am: Add `madwifi.h' to madwifi_la_SOURCES.
    
    The header file was not included in generated distribution tarballs.

commit 1cc3e40380c9a39f1fa2e69cdeabaf0306a42d69
Author: Aman Gupta <aman at tmm1.net>
Date:   Tue Aug 18 01:10:20 2009 -0700

    network plugin: Add MaxPacketSize config option to the network plugin.
    
    Signed-off-by: Florian Forster <octo at leeloo.lan.home.verplant.org>

commit 479670b30c0115d27ee9d11c10a5d464b1cda47e
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Mon Aug 17 22:51:16 2009 +0200

    contrib/GenericJMX.conf: Fix ‘property patterns’ in the sample config.
    
    See also: <http://java.sun.com/j2se/1.5.0/docs/api/javax/management/ObjectName.html>

commit fd48357ddeb1b58d5795015e845f3105a7ba3103
Author: Mariusz Gronczewski <xani666 at gmail.com>
Date:   Mon Aug 17 02:20:29 2009 +0200

    Random write timeout for rrdtool plugin
    
    Hi,
    
    i was thinking how to "spread out" writes to rrd files a bit, because
    now its big spike every CacheTimeout or little smaller "square" on
    graph if u use WritesPerSecond. So ive written little patch which
    "spreads out" writing by changing Cache timeout every time rrdtool
    plugin finds data to save. Basically instead of moving data older than
    CacheTimeout to write queue it moves it if its older than CacheTimeout
    +- RandomTimeout. What it changes?
    
    Without it, gathered data is "synchronised" with eachother, for
    example (CacheTimeout = 600):
    1.collectd starts
    2. after 10 minutes, data from all plugins get "too old" and get
    pushed into write queue and get saved
    3. after another 10 minutes, same thing, all data "ages" at same time
    and get saved in one big chunk
    
    With it (RandomTimeout=300) it works like that
    1. collectd starts
    2. after 5 minutes some data (lets call it A) starts to go into write queue
    3. after 10 minutes from start about 50% (on average) data is saved
    (lets call it B)
    4. finally, after 15 minutes, all "leftover" data gets saved (lets call it C)
    5. next "cycle"
    6. data A ages first (cos it was put to disk first) and like before,
    some of it gets writen earlier, some of it gets written later)
    7. after that data B ages and like before writes are spread over 10 mins
    8. same with C
    
    so first cycle (looking at i/o) looks like sinus, next 10 minute cycle
    is same sinus but flattened a bit and so on (looks like fading sinus),
    and after few cycles it gives pretty much same amount on writes per
    sec, no ugly spikes.
    Effect looks like that:
    http://img24.imageshack.us/img24/7294/drrawcgi.png
    (after few more h it will be more "smooth")
    
    Regards
    Mariusz
    
    Signed-off-by: Florian Forster <octo at huhu.verplant.org>

commit 0b9800153cec24ed79c71beaac265e33ee3001ba
Merge: 1e4db580e37d235755de0c4a4c08ba7a6ac7bb4c dbbdb25542df6d9afbfddf78a3b1a8fee9029a80
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Mon Aug 17 10:53:07 2009 +0200

    Merge branch 'collectd-4.7'

commit dbbdb25542df6d9afbfddf78a3b1a8fee9029a80
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Mon Aug 17 10:52:16 2009 +0200

    java plugin: Fix configuration with multiple blocks.
    
    The number of children was not updated.

commit 1e4db580e37d235755de0c4a4c08ba7a6ac7bb4c
Merge: dc0a112ba2a77dc61ab99dcbbda2e0bbf133d6ed de38c1a6e44cadfc88fc6e1d0919663f0c08bbdc
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Mon Aug 17 10:46:05 2009 +0200

    Merge branch 'collectd-4.7'
    
    Conflicts:
    	src/network.c

commit de38c1a6e44cadfc88fc6e1d0919663f0c08bbdc
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Mon Aug 17 10:39:55 2009 +0200

    java plugin: Wait with the configuration until the daemon has forked.
    
    Passing the configuration to Java-based plugins requires the JVM to be
    active and running. However, the JVM starts some threads that are lost
    when the daemon forks to the background.
    
    This patch changes the behavior of the Java plugin to copy the
    configuration blocks found to a local variable and run the configuration
    of the Java-based plugins from the `init' callback, because it is
    invoked after the daemon has forked to the background.

commit 8f40e8dacad2bfcb9d659e12740aa3ebc15ada65
Merge: b6c75ecde000fd1377338a1ceb40f567ff60fbb6 94f2ff236902035a1d549bbe393402ec30ee245f
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Mon Aug 17 09:48:43 2009 +0200

    Merge branch 'collectd-4.6' into collectd-4.7

commit 94f2ff236902035a1d549bbe393402ec30ee245f
Author: Alan Pevec <apevec at redhat.com>
Date:   Wed Aug 12 00:52:47 2009 +0200

    contrib/fedora/init.d-collectd: Fix condrestart.
    
    on upgrade collectd is not restarted
    https://bugzilla.redhat.com/show_bug.cgi?id=516273
    
    Signed-off-by: Alan Pevec <apevec at redhat.com>
    Signed-off-by: Florian Forster <octo at huhu.verplant.org>

commit dc0a112ba2a77dc61ab99dcbbda2e0bbf133d6ed
Author: Florian Forster <octo at huhu.verplant.org>
Date:   Mon Aug 17 08:32:55 2009 +0200

    madwifi plugin: Signal an error in the read function when appropriate.
    
    An error will be signaled to the daemon if querying all interfaces failed.
    Querying an interface fails if all ioctls return an error.

commit 08f5dee4cf337eb0cac72b87c24092e4ea2089cf
Author: Andrés J. Díaz <ajdiaz at connectical.com>
Date:   Tue Aug 11 21:57:34 2009 +0200

    src/utils_cache.c: Update GETVAL output when missing state.
    
    Hi
    
    I think that I've found a bug when use unixsock plugin. The problem is
    releate with missing state, when no value is received by daemon for a
    while in the cache is marked as MISSING, but the last value is still
    showing even when machine is not reporting in a GETVAL and LISTVAL
    commands. Some utlities like collectd-nagios does not work correctly,
    and report an OKAY value when host is not reporting from a long time.
    
    I attach a patch with check the state value of an cache entry in
    uc_get_names and in uc_get_rate_by_name. This patch works for me, but
    it's not very tested yet, and I not very sure about if it's a good way
    to check the problem. The patch is tested on 4.7.2 release version.
    
    BTW a GETSTATE command will be an useful feature too :P
    
    Regards,
      Andres
    
    Signed-off-by: Florian Forster <octo at huhu.verplant.org>

commit b6c75ecde000fd1377338a1ceb40f567ff60fbb6
Author: Andrés J. Díaz <ajdiaz at connectical.com>
Date:   Tue Aug 11 21:57:34 2009 +0200

    src/utils_cache.c: Update GETVAL output when missing state.
    
    Hi
    
    I think that I've found a bug when use unixsock plugin. The problem is
    releate with missing state, when no value is received by daemon for a
    while in the cache is marked as MISSING, but the last value is still
    showing even when machine is not reporting in a GETVAL and LISTVAL
    commands. Some utlities like collectd-nagios does not work correctly,
    and report an OKAY value when host is not reporting from a long time.
    
    I attach a patch with check the state value of an cache entry in
    uc_get_names and in uc_get_rate_by_name. This patch works for me, but
    it's not very tested yet, and I not very sure about if it's a good way
    to check the problem. The patch is tested on 4.7.2 release version.
    
    BTW a GETSTATE command will be an useful feature too :P
    
    Regards,
      Andres
    
    Signed-off-by: Florian Forster <octo at huhu.verplant.org>

commit d8762c435fadaeaca222ab97d93bba2352449690
Author: Florian Forster <octo at huhu.verplant.org>
Date:   Sun Aug 16 09:27:44 2009 +0200

    madwifi plugin: Rename the antenna stats.
    
    The first part of the type instance is already something like `ast_ant_rx' -
    using `antenna%i' as the second part is therefore redundant. Thanks to Ondrej
    for the pointer.

commit 3f09a6bfc9327f3d3c331b48f1c0cebcd4cd6628
Author: Florian Forster <octo at huhu.verplant.org>
Date:   Sun Aug 16 09:21:05 2009 +0200

    madwifi plugin: Unify ioctl error handling.
    
    If an ioctl fails, a debug message is generated rather than an error message.
    There are several types of interfaces manages by the madwifi driver, and not
    all interfaces support all ioctls. Thanks to Ondrej for pointing this out.

commit 317e5932836ec040ccf3a19054a922eb7f00bd0a
Author: Florian Forster <octo at huhu.verplant.org>
Date:   Sun Aug 16 09:13:31 2009 +0200

    madwifi plugin: Fix buffer handling around `readlink'.
    
    readlink(2) doesn't null-terminate the buffer in any case. Thanks to Ondrej for
    pointing this out.

commit 2c4802dbdf90c721202fd87f8141ab079b085c56
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Thu Aug 13 12:37:20 2009 +0200

    src/plugin.c: Make `plugin_unregister_read' functional again.

commit ee203ecd5fae28ab12f158e03e18f2b57394897a
Merge: 396a709634cef7eff49cbbeb9b59ade74e4bd8bc b920755383f35b7504974d12ccfbd9597b9087d7
Author: Florian Forster <octo at huhu.verplant.org>
Date:   Thu Aug 13 08:14:24 2009 +0200

    Merge branch 'ff/genericjmx'

commit 633b8c6bbac1c6de6c675f28e428b7415e283d64
Author: Florian Forster <octo at huhu.verplant.org>
Date:   Wed Aug 12 15:08:40 2009 +0200

    libvirt plugin: Further improve the connection handling.
    
    Use the complaint mechanism for failed connection attempts and handle multiple
    `Connection' configuration options like other options in other plugins (i. e.
    later options overwrite earlier settings of the same name).

commit 3602864950048219eb2981be13d902cc60117da2
Author: Alan Pevec <apevec at redhat.com>
Date:   Wed Aug 12 00:53:00 2009 +0200

    libvirt plugin: Re-connect to libvirtd if connecting fails.
    
    https://bugzilla.redhat.com/show_bug.cgi?id=480997
    
    Signed-off-by: Alan Pevec <apevec at redhat.com>
    Signed-off-by: Florian Forster <octo at huhu.verplant.org>

commit deafbed6154307233c5e7846d13c130f414ea508
Author: Florian Forster <octo at noris.net>
Date:   Wed Jul 22 10:20:59 2009 +0200

    src/meta_data.c: Fix a typo.

commit 396a709634cef7eff49cbbeb9b59ade74e4bd8bc
Author: Florian Forster <sifnfors at informatik.stud.uni-erlangen.de>
Date:   Tue Aug 11 16:44:22 2009 +0200

    AUTHORS: Add Ondrej.

commit d23ae38ad0863aca418e2003af0fcb7e4edc8f26
Author: Florian Forster <sifnfors at informatik.stud.uni-erlangen.de>
Date:   Tue Aug 11 16:29:28 2009 +0200

    madwifi plugin: Add some assertions …
    
    … to otherwise unchecked array indices.

commit a80b4a724c3b64df78f9fc73be29dde181cc7bbe
Author: Florian Forster <sifnfors at informatik.stud.uni-erlangen.de>
Date:   Tue Aug 11 16:08:03 2009 +0200

    madwifi plugin: Fix a few best practices.
    
    Use `sstrncpy' and `ssnprintf' instead of the unsafe versions. Don't
    specify array dimensions twice. Don't cast _Bool to int.

commit a49f20142a5fb2a2dab23bb81195175ac4a48de6
Author: Florian Forster <sifnfors at informatik.stud.uni-erlangen.de>
Date:   Tue Aug 11 13:24:04 2009 +0200

    madwifi plugin: Rename the ‘DisableSysfs’ to ‘Source’.
    
    Configurations like
      DisableSysfs false
    are confusing.

commit 01c19d8cf54620da94b6b22649b1c4a4e4e55c21
Author: Ondrej Zajicek <santiago at crfreenet.org>
Date:   Tue Aug 11 11:44:28 2009 +0200

    madwifi plugin: Plugin for detailed information from the MadWifi driver.
    
    Hello
    
    After some time i managed to make a new version of Madwifi plugin. The
    main change is that it is possible to finely tune the set of monitored
    statistics and just the most important statistics are monitored by
    default. Also the number of new data types is reduced (by using type
    instances).
    
    Signed-off-by: Florian Forster <octo at verplant.org>

commit 5313ade6a32041b9312e7fe38bb6a212a85f9a0b
Author: Florian Forster <sifnfors at informatik.stud.uni-erlangen.de>
Date:   Tue Aug 4 17:37:25 2009 +0200

    collectd.conf(5): Fix two minor typos.

commit 30da84bcde05e5720ae3af4055e107e4767bb2b9
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Tue Aug 4 13:08:56 2009 +0200

    src/utils_cache.c: Don't tell the user about missing values.
    
    This is bound to confuse users..

commit 27aec36864d1882bf628b9c71c233d70e994a202
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Tue Aug 4 13:02:57 2009 +0200

    network plugin: Use the meta data to implement the `Forward' option.
    
    Previously, a cache in the network plugin was used to keep track of
    which values were received via the network in order to distinguish
    between ``forwarded'' values and values that were received from
    somewhere else.
    
    The same cache was also used to avoid loops when forwarding packages by
    keeping track of the highest timestamp that was sent by the plugin and
    discard received data that was older or as old as that.
    
    This information is not kept in the meta data of the global cache (what
    is the last timestamp sent) and the meta data of the value list (was
    this value list received via the network?). The cache that was
    maintained in the network plugin has been removed.

commit cc4301c93dc9f086f823f6e5aa90e369ca9ff188
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Tue Aug 4 12:21:07 2009 +0200

    src/utils_cache.[ch]: Make the `value_list_t *' const.
    
    The struct is only needed to build the name (a string) anyway..

commit 515a4e0625d35c791daf283c91461416e6be65ed
Author: Florian Forster <octo at huhu.verplant.org>
Date:   Tue Aug 4 12:13:41 2009 +0200

    network plugin: Fix an incorrectly used configuration variable.
    
    The `CacheFlush' option was assigned to the `TTL' variable. Ouch.
    
    Version 4.6 and earlier are not effected.

commit fd0445383400a82f33159ec5f3b0209ce17e7d7b
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Tue Aug 4 11:05:02 2009 +0200

    src/utils_cache.c: Free the meta data when removing a cache entry.

commit 62e42f8dbbc99815f06d7204fc410bca9aece4ef
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Tue Aug 4 10:54:17 2009 +0200

    src/utils_cache.[ch]: Implement a meta-data interface for cached values.
    
    This should make it possible to write stateful matches and similar nifty
    stuff - at last \o/

commit 4f92890a48dab99e18ef30883c80f4ce70f75ac7
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Tue Aug 4 10:23:42 2009 +0200

    src/common.h: Remove the `ds' argument from the `FORMAT_VL' macro.
    
    Since `type' is now included in `value_list_t' the `data_set_t' is no
    longer required.

commit 3246d8029377793602a9100c8e07e53efb142808
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Tue Aug 4 09:59:22 2009 +0200

    src/collectd.conf.in: Fix the default class path of the java plugin.

commit b920755383f35b7504974d12ccfbd9597b9087d7
Author: Florian Forster <sifnfors at informatik.stud.uni-erlangen.de>
Date:   Mon Aug 3 14:47:02 2009 +0200

    contrib/GenericJMX.conf: Added a sample config file for the GenericJMX plugin.

commit 7603c661cdeabe2068939486ed0a3e49aba129a3
Author: Florian Forster <sifnfors at informatik.stud.uni-erlangen.de>
Date:   Mon Aug 3 11:56:26 2009 +0200

    java bindings: GenericJMX: Add support for more numeric classes.

commit 1a73830d72f470999df7f0289cfd0f1cf3cc150c
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sun Aug 2 17:54:37 2009 +0200

    java bindings: GenericJMX: Fix a couple of error messages.
    
    Also renamed a variable to fit the naming schema.

commit e1f4ed33a0dbf6f017ebae8395759893efa6b176
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sun Aug 2 17:26:05 2009 +0200

    java bindings: GenericJMX: Add support for "InstanceFrom".
    
    This can be used to specify so called "properties" to include in the
    plugin instance.

commit 658b873e6ac13d387a710fa02d8f85057fd5cae8
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sun Aug 2 16:50:22 2009 +0200

    java bindings: GenericJMX: This first prototype version seems to do something.
    
    Well, at least it's not throwing exceptions like mad..

commit 38469fd7bce3b64857c711169c6289f16d8f0114
Merge: 5e22694c513a35135c9155e410a49d83ad73302b ff607e9d1abc8f738b15626b5d30145d9a9f3f0d
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sun Aug 2 12:22:20 2009 +0200

    Merge remote branch 'tokkee/sh/collectd-4.6' into collectd-4.6

commit 47e0e1329fd7b23486d0c5b2b007d6f2f7f1db00
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sun Aug 2 12:21:49 2009 +0200

    java bindings: JMXMemory: Remove an annoying folding.

commit bd931500189953f6995dc0cda30a35d98a824c3d
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sun Aug 2 12:18:30 2009 +0200

    java bindings: Add first take at a `GenericJMX' plugin.

commit a6c03398aae03ae35ec676f20abe71c84cc4f039
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sun Aug 2 12:17:05 2009 +0200

    src/collectd.conf.in: java plugin: Use @prefix@ when building the example class path.

commit a97f0dd7dc07e6fe78df806d9c6f14b3681513a6
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sun Aug 2 12:16:42 2009 +0200

    java bindings: DataSource: Add `DERIVE' and `ABSOLUTE'.

commit 5e22694c513a35135c9155e410a49d83ad73302b
Author: Anthony Dewhurst <dewhurst at gmail.com>
Date:   Thu Jul 30 21:42:07 2009 +0100

    contrib/collection3: Don't use SI prefix for number of processes
    
    I, at least, don't normally measure processes in "milliprocesses".
    
    Signed-off-by: Florian Forster <octo at leeloo.lan.home.verplant.org>

commit ff607e9d1abc8f738b15626b5d30145d9a9f3f0d
Author: Sebastian Harl <sh at tokkee.org>
Date:   Sun Jul 26 15:01:53 2009 +0200

    collection3/etc/collection.conf: Reencoded in UTF-8.
    
    Depending on the locale settings, RRDtool might fail to handle "special
    characters" correctly. Using UTF-8 is a way to work around that issue.
    
    Thanks to Daniel Danner for reporting and testing this.

commit c2593281c3ed2919f67514381be2b5137308f3af
Author: Sebastian Harl <sh at tokkee.org>
Date:   Wed Jul 8 13:19:57 2009 +0200

    src/utils_cache.c: Make really sure to free the right cache entry.
    
    Make sure we do not try to free a (possibly some random) cache entry after
    removing it from the AVL tree. Potentially, this might have caused invalid
    free()s in some rare situations.

commit a77086739afba579bee2a4a216b9e1018ef8a442
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Tue Jul 21 08:46:49 2009 +0200

    src/collectd.conf.in: Fix a typo.

commit 22d070094908358bccc1f1ff9189ebaf98fe8bc6
Author: Florian Forster <octo at leeloo.lan.home.verplant.org>
Date:   Sun Jul 19 17:38:55 2009 +0200

    ChangeLog: Fix a typo.