test/serviceability/tmtools/jstat/utils/JstatGcCauseResults.java

@@ -23,12 +23,12 @@
 
 /*
  * Results of running the JstatGcTool ("jstat -gccause <pid>")
  *
  * Output example:
- * S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT     GCT    LGCC                 GCC
- * 0.00   6.25  46.19   0.34  57.98  54.63  15305 1270.551     0    0.000 1270.551 Allocation Failure   No GC
+ * S0     S1     E      O      M     CCS    YGC     YGCT    FGC    FGCT    CGC    CGCT     GCT    LGCC                 GCC
+ * 0.00   6.25  46.19   0.34  57.98  54.63  15305 1270.551     0    0.000     0    0.000 1270.551 Allocation Failure   No GC
 
  * Output description:
  * S0         Survivor space 0 utilization as a percentage of the space's current capacity.
  * S1         Survivor space 1 utilization as a percentage of the space's current capacity.
  * E           Eden space utilization as a percentage of the space's current capacity.

@@ -37,10 +37,12 @@
  * CCS     Compressed Class Space
  * YGC     Number of young generation GC events.
  * YGCT    Young generation garbage collection time.
  * FGC      Number of full GC events.
  * FGCT    Full garbage collection time.
+ * CGC      Number of STW events during Concurrent GC's.
+ * CGCT    STW time during Concurrent GC's.
  * GCT      Total garbage collection time.
  * LGCC    Cause of last Garbage Collection.
  * GCC      Cause of current Garbage Collection.
  */
 package utils;

@@ -71,19 +73,24 @@
         assertThat(GCT >= 0, "Incorrect time value for GCT");
         assertThat(GCT >= YGCT, "GCT < YGCT (total garbage collection time < young generation garbage collection time)");
 
         int FGC = getIntValue("FGC");
         float FGCT = getFloatValue("FGCT");
-        assertThat(FGCT >= 0, "Incorrect time value for FGCT");
         if (FGC > 0) {
             assertThat(FGCT > 0, "Number of full GC events is " + FGC + ", but FGCT is 0");
         }
 
-        assertThat(GCT >= FGCT, "GCT < YGCT (total garbage collection time < full generation garbage collection time)");
+        int CGC = getIntValue("CGC");
+        float CGCT = getFloatValue("CGCT");
+        if (CGC > 0) {
+            assertThat(CGCT > 0, "Number of concurrent GC events is " + CGC + ", but CGCT is 0");
+        }
+
+        assertThat(GCT >= (FGCT + CGCT), "GCT < YGCT (total garbage collection time < full generation garbage collection time)");
 
-        assertThat(checkFloatIsSum(GCT, YGCT, FGCT), "GCT != (YGCT + FGCT) " + "(GCT = " + GCT + ", YGCT = " + YGCT
-                + ", FGCT = " + FGCT + ", (YCGT + FGCT) = " + (YGCT + FGCT) + ")");
+        assertThat(checkFloatIsSum(GCT, YGCT, FGCT, CGCT), "GCT != (YGCT + FGCT + CGCT) " + "(GCT = " + GCT + ", YGCT = " + YGCT
+                + ", FGCT = " + FGCT + ", CGCT = " + CGCT + ", (YCGT + FGCT + CGCT) = " + (YGCT + FGCT + CGCT) + ")");
     }
 
     private static final float FLOAT_COMPARISON_TOLERANCE = 0.0011f;
 
     private static boolean checkFloatIsSum(float sum, float... floats) {