processes plugin: Implement collecting the number of pagefaults for a selected process.

diff --git a/src/processes.c b/src/processes.c
index 0b52b9895209f09ab61b27429f4169fa3ee3236a..b02e869d37bdce009576370c7c80c1f9fbbc0d93 100644 (file)
--- a/src/processes.c
+++ b/src/processes.c
@@ -131,6 +131,16 @@ static char *ps_count_ds_def[] =
 };
 static int ps_count_ds_num = 2;
 
+static char *ps_pagefaults_file = "processes/ps_pagefaults-%s.rrd";
+static char *ps_pagefaults_ds_def[] =
+{
+       /* max = 2^63 - 1 */
+       "DS:minflt:GAUGE:"COLLECTD_HEARTBEAT":0:9223372036854775807",
+       "DS:majflt:GAUGE:"COLLECTD_HEARTBEAT":0:9223372036854775807",
+       NULL
+};
+static int ps_pagefaults_ds_num = 2;
+
 static char *config_keys[] =
 {
        "CollectName",
@@ -330,6 +340,21 @@ static void ps_count_write (char *host, char *inst, char *val)
                        ps_count_ds_def, ps_count_ds_num);
 }
 
+static void ps_pagefaults_write (char *host, char *inst, char *val)
+{
+       char filename[256];
+       int status;
+
+       status = snprintf (filename, 256, ps_pagefaults_file, inst);
+       if ((status < 1) || (status >= 256))
+               return;
+
+       DBG ("host = %s; filename = %s; val = %s;",
+                       host, filename, val);
+       rrd_update_file (host, filename, val,
+                       ps_pagefaults_ds_def, ps_pagefaults_ds_num);
+}
+
 #if PROCESSES_HAVE_READ
 static void ps_submit (int running,
                int sleeping,
@@ -379,6 +404,12 @@ static void ps_submit_proc (procstat_t *ps)
        buffer[63] = '\0';
        plugin_submit ("ps_count", ps->name, buffer);
 
+       snprintf (buffer, 64, "%u:%lu:%lu",
+                       (unsigned int) curtime,
+                       ps->vmem_minflt, ps->vmem_majflt);
+       buffer[63] = '\0';
+       plugin_submit ("ps_pagefaults", ps->name, buffer);
+
        DBG ("name = %s; num_proc = %i; num_lwp = %i; vmem_rss = %i; "
                        "vmem_minflt = %i; vmem_majflt = %i; "
                        "cpu_user = %i; cpu_system = %i;",
@@ -791,6 +822,7 @@ void module_register (void)
        plugin_register ("ps_rss", NULL, NULL, ps_rss_write);
        plugin_register ("ps_cputime", NULL, NULL, ps_cputime_write);
        plugin_register ("ps_count", NULL, NULL, ps_count_write);
+       plugin_register ("ps_pagefaults", NULL, NULL, ps_pagefaults_write);
        cf_register (MODULE_NAME, ps_config, config_keys, config_keys_num);
 }