check_load can optionally divide by number of cpus

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1700 f882894a-f735-0410-b71e-b25c423dba1c

1 files changed, 17 insertions, 2 deletions

diff --git a/plugins/check_load.c b/plugins/check_load.c
index 3d00432..9de8ff7 100644
--- a/plugins/check_load.c
+++ b/plugins/check_load.c
@@ -71,6 +71,7 @@ double cload[3] = { 0.0, 0.0, 0.0 };
 #define la15 la[2]
 
 char *status_line;
+int take_into_account_cpus = 0;
 
 static void
 get_threshold(char *arg, double *th)
@@ -103,6 +104,7 @@ main (int argc, char **argv)
 {
         int result;
         int i;
+        long numcpus;
 
         double la[3] = { 0.0, 0.0, 0.0 };       /* NetBSD complains about unitialized arrays */
 #ifndef HAVE_GETLOADAVG
@@ -163,6 +165,13 @@ main (int argc, char **argv)
 # endif
 #endif
 
+        if (take_into_account_cpus == 1) {
+                if ((numcpus = GET_NUMBER_OF_CPUS()) > 0) {
+                        la[0] = la[0] / numcpus;
+                        la[1] = la[1] / numcpus;
+                        la[2] = la[2] / numcpus;
+                }
+        }
         if ((la[0] < 0.0) || (la[1] < 0.0) || (la[2] < 0.0)) {
 #ifdef HAVE_GETLOADAVG
                 printf (_("Error in getloadavg()\n"));
@@ -208,6 +217,7 @@ process_arguments (int argc, char **argv)
         static struct option longopts[] = {
                 {"warning", required_argument, 0, 'w'},
                 {"critical", required_argument, 0, 'c'},
+                {"percpu", no_argument, 0, 'r'},
                 {"version", no_argument, 0, 'V'},
                 {"help", no_argument, 0, 'h'},
                 {0, 0, 0, 0}
@@ -217,7 +227,7 @@ process_arguments (int argc, char **argv)
                 return ERROR;
 
         while (1) {
-                c = getopt_long (argc, argv, "Vhc:w:", longopts, &option);
+                c = getopt_long (argc, argv, "Vhrc:w:", longopts, &option);
 
                 if (c == -1 || c == EOF)
                         break;
@@ -229,6 +239,9 @@ process_arguments (int argc, char **argv)
                 case 'c': /* critical time threshold */
                         get_threshold(optarg, cload);
                         break;
+                case 'r': /* Divide load average by number of CPUs */
+                        take_into_account_cpus = 1;
+                        break;
                 case 'V':                                                                       /* version */
                         print_revision (progname, revision);
                         exit (STATE_OK);
@@ -301,6 +314,8 @@ print_help (void)
   printf (" %s\n", "-c, --critical=CLOAD1,CLOAD5,CLOAD15");
   printf ("    %s\n", _("Exit with CRITICAL status if load average exceed CLOADn"));
   printf ("    %s\n", _("the load average format is the same used by \"uptime\" and \"w\""));
+  printf (" %s\n", "-r, --percpu");
+  printf ("    %s\n", _("Divide the load averages by the number of CPUs (when possible)"));
 
         printf (_(UT_SUPPORT));
 }
@@ -309,5 +324,5 @@ void
 print_usage (void)
 {
   printf (_("Usage:"));
-        printf ("%s -w WLOAD1,WLOAD5,WLOAD15 -c CLOAD1,CLOAD5,CLOAD15\n", progname);
+        printf ("%s [-r] -w WLOAD1,WLOAD5,WLOAD15 -c CLOAD1,CLOAD5,CLOAD15\n", progname);
 }