adding CPU sleep plugin

diff --git a/README b/README
index 5f24945..c915a53 100644 (file)
--- a/README
+++ b/README
@@ -64,6 +64,9 @@ Features
     - cpufreq
       CPU frequency (For laptops with speed step or a similar technology)
 
+    - cpusleep
+      CPU sleep: Time spent in suspend (For mobile devices which enter suspend automatically)
+
     - curl
       Parse statistics from websites using regular expressions.
 

diff --git a/configure.ac b/configure.ac
index e2149ba..2a4d98d 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -5440,6 +5440,7 @@ plugin_conntrack="no"
 plugin_contextswitch="no"
 plugin_cpu="no"
 plugin_cpufreq="no"
+plugin_cpusleep="no"
 plugin_curl_json="no"
 plugin_curl_xml="no"
 plugin_df="no"
@@ -5490,6 +5491,7 @@ then
        plugin_contextswitch="yes"
        plugin_cpu="yes"
        plugin_cpufreq="yes"
+       plugin_cpusleep="yes"
        plugin_disk="yes"
        plugin_drbd="yes"
        plugin_entropy="yes"
@@ -5854,6 +5856,7 @@ AC_PLUGIN([conntrack],           [$plugin_conntrack],       [nf_conntrack statis
 AC_PLUGIN([contextswitch],       [$plugin_contextswitch],   [context switch statistics])
 AC_PLUGIN([cpu],                 [$plugin_cpu],             [CPU usage statistics])
 AC_PLUGIN([cpufreq],             [$plugin_cpufreq],         [CPU frequency statistics])
+AC_PLUGIN([cpusleep],            [$plugin_cpusleep],        [CPU sleep statistics])
 AC_PLUGIN([csv],                 [yes],                     [CSV output plugin])
 AC_PLUGIN([curl],                [$with_libcurl],           [CURL generic web statistics])
 AC_PLUGIN([curl_json],           [$plugin_curl_json],       [CouchDB statistics])
@@ -6257,6 +6260,7 @@ Configuration:
     contextswitch . . . . $enable_contextswitch
     cpu . . . . . . . . . $enable_cpu
     cpufreq . . . . . . . $enable_cpufreq
+    cpusleep  . . . . . . $enable_cpusleep
     csv . . . . . . . . . $enable_csv
     curl  . . . . . . . . $enable_curl
     curl_json . . . . . . $enable_curl_json

diff --git a/src/Makefile.am b/src/Makefile.am
index d54094f..3774511 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -257,6 +257,12 @@ cpufreq_la_SOURCES = cpufreq.c
 cpufreq_la_LDFLAGS = $(PLUGIN_LDFLAGS)
 endif
 
+if BUILD_PLUGIN_CPUSLEEP
+pkglib_LTLIBRARIES += cpusleep.la
+cpusleep_la_SOURCES = cpusleep.c
+cpusleep_la_LDFLAGS = $(PLUGIN_LDFLAGS)
+endif
+
 if BUILD_PLUGIN_CSV
 pkglib_LTLIBRARIES += csv.la
 csv_la_SOURCES = csv.c

diff --git a/src/collectd.conf.in b/src/collectd.conf.in
index 93644fa..bd8b256 100644 (file)
--- a/src/collectd.conf.in
+++ b/src/collectd.conf.in
@@ -104,6 +104,7 @@
 #@BUILD_PLUGIN_CONTEXTSWITCH_TRUE@LoadPlugin contextswitch
 @BUILD_PLUGIN_CPU_TRUE@@BUILD_PLUGIN_CPU_TRUE@LoadPlugin cpu
 #@BUILD_PLUGIN_CPUFREQ_TRUE@LoadPlugin cpufreq
+#@BUILD_PLUGIN_CPUSLEEP_TRUE@LoadPlugin cpusleep
 @LOAD_PLUGIN_CSV@LoadPlugin csv
 #@BUILD_PLUGIN_CURL_TRUE@LoadPlugin curl
 #@BUILD_PLUGIN_CURL_JSON_TRUE@LoadPlugin curl_json

diff --git a/src/collectd.conf.pod b/src/collectd.conf.pod
index b7a4f46..e18ef45 100644 (file)
--- a/src/collectd.conf.pod
+++ b/src/collectd.conf.pod
@@ -1431,6 +1431,15 @@ installed) to get the current CPU frequency. If this file does not exist make
 sure B<cpufreqd> (L<http://cpufreqd.sourceforge.net/>) or a similar tool is
 installed and an "cpu governor" (that's a kernel module) is loaded.
 
+=head2 Plugin C<cpusleep>
+
+This plugin doesn't have any options. It reads CLOCK_BOOTTIME and
+CLOCK_MONOTONIC and reports the differences between these
+clocks. Since BOOTTIME clock increments while device is suspended and
+MONOTONIC clock does not, the derivative of the difference between
+these clocks gives the relative amount of time the device has spent in
+suspend state. The recorded value is in milliseconds / seconds.
+
 =head2 Plugin C<csv>
 
 =over 4

diff --git a/src/cpusleep.c b/src/cpusleep.c
new file mode 100644 (file)
index 0000000..46f1040
--- /dev/null
+++ b/src/cpusleep.c
@@ -0,0 +1,87 @@
+/**
+ * collectd - src/cpusleep.c
+ * Copyright (C) 2016 rinigus
+ *
+ *
+The MIT License (MIT)
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+ * Authors:
+ *   rinigus <http://github.com/rinigus>
+
+ CPU sleep is reported in milliseconds / s. For that, derive type was
+ selected and the time difference between BOOT and MONOTONIC clocks
+ fed to RRD
+ 
+ **/
+
+#include "collectd.h"
+#include "common.h"
+#include "plugin.h"
+#include <time.h>
+
+static void cpusleep_submit (derive_t cpu_sleep)
+{
+  value_t values[1];
+  value_list_t vl = VALUE_LIST_INIT;
+  
+  values[0].derive = (derive_t) cpu_sleep;
+  
+  vl.values = values;
+  vl.values_len = 1;
+  sstrncpy (vl.host, hostname_g, sizeof (vl.host));
+  sstrncpy (vl.plugin, "cpusleep", sizeof (vl.plugin));
+  sstrncpy (vl.type, "cpusleep", sizeof (vl.type));
+  
+  plugin_dispatch_values (&vl);
+}
+
+static int cpusleep_read (void)
+{
+  struct timespec b, m;
+  if ( clock_gettime(CLOCK_BOOTTIME, &b ) < 0 )
+    {
+      ERROR("cpusleep plugin: clock_gettime CLOCK_MONOTONIC failed");
+      return (-1);
+    }
+
+  if ( clock_gettime(CLOCK_MONOTONIC, &m ) < 0 )
+    {
+      ERROR("cpusleep plugin: clock_gettime CLOCK_MONOTONIC failed");
+      return (-1);
+    }
+
+  double db = b.tv_sec + 1e-9 * b.tv_nsec;
+  double dm = m.tv_sec + 1e-9 * m.tv_nsec;
+
+  // to avoid false positives in counter overflow due to reboot,
+  // derive is used
+  derive_t sleep = (derive_t) ((db-dm) * 1000);  
+
+  cpusleep_submit (sleep);
+
+  return 0;
+}
+
+void module_register (void)
+{
+  plugin_register_read ("cpusleep", cpusleep_read);
+} /* void module_register */

diff --git a/src/types.db b/src/types.db
index 0c5a433..e0d5806 100644 (file)
--- a/src/types.db
+++ b/src/types.db
@@ -30,6 +30,7 @@ count                   value:GAUGE:0:U
 counter                 value:COUNTER:U:U
 cpu                     value:DERIVE:0:U
 cpufreq                 value:GAUGE:0:U
+cpusleep                value:DERIVE:0:U
 current                 value:GAUGE:U:U
 current_connections     value:GAUGE:0:U
 current_sessions        value:GAUGE:0:U