File at-adjust_load_to_cpu_count.patch of Package at

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File at-adjust_load_to_cpu_count.patch of Package at (Revision 572e6b2e0d0b8919e23b4e9cfcd318c0)

Currently displaying revision 572e6b2e0d0b8919e23b4e9cfcd318c0 , Show latest

Index: at-3.1.23/at.1.in
===================================================================
--- at-3.1.23.orig/at.1.in
+++ at-3.1.23/at.1.in
@@ -68,6 +68,9 @@ deletes jobs, identified by their job nu
 executes commands when system load levels permit; in other words, when the load average
 drops below @LOADAVG_MX@, or the value specified in the invocation of
 .BR atd .
+Note that because of the load meaning on Linux,
+this number is multiplied by the amount of CPUs when compared to the
+system loadavg.
 .PP
 .B At
 allows fairly complex time
Index: at-3.1.23/atd.c
===================================================================
--- at-3.1.23.orig/atd.c
+++ at-3.1.23/atd.c
@@ -625,6 +625,7 @@ run_loop()
     int run_batch;
     static time_t next_batch = 0;
     double currlavg[3];
+    int cpu_count = 1;
 
     /* Main loop. Open spool directory for reading and look over all the
      * files in there. If the filename indicates that the job should be run,
@@ -775,7 +776,14 @@ run_loop()
 #ifdef GETLOADAVG_PRIVILEGED
 	END_PRIV
 #endif
-	if (currlavg[0] < load_avg) {
+#ifdef _SC_NPROCESSORS_ONLN
+	cpu_count = sysconf(_SC_NPROCESSORS_ONLN);
+	if (cpu_count < 1) {
+		cpu_count = 1;
+	}
+#endif
+
+	if (currlavg[0] < load_avg * cpu_count) {
 	    run_file(batch_name, batch_uid, batch_gid);
 	    run_batch--;
         }
Index: at-3.1.23/atd.8.in
===================================================================
--- at-3.1.23.orig/atd.8.in
+++ at-3.1.23/atd.8.in
@@ -20,10 +20,8 @@ runs jobs queued by
 .B \-l
 Specifies a limiting load factor, over which batch jobs should
 not be run, instead of the compile-time choice of @LOADAVG_MX@.
-For an SMP system with
-.I n
-CPUs, you will probably want to set this higher than
-.IR n\-1.
+This number is multiplied by the amount of CPUs when comparing
+to /proc/loadavg, because loadavg is a sum over all processors on Linux.
 .TP 8
 .B \-b
 Specify the minimum interval in seconds between the start of two

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File at-adjust_load_to_cpu_count.patch of Package at (Revision 572e6b2e0d0b8919e23b4e9cfcd318c0)

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