1 /*
   2  * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * Results of running the JstatGcTool ("jstat -gc <pid>")
  26  *
  27  * Output example:
  28  * (S0C    S1C    S0U    S1U      EC       EU        OC         OU       MC     MU    CCSC   CCSU   YGC     YGCT    FGC    FGCT     GCT
  29  * 512.0  512.0   32.0   0.0   288768.0 168160.6  83968.0     288.1    4864.0 2820.3 512.0  279.7   18510 1559.208   0      0.000 1559.208
  30  *
  31  * Output description:
  32  * S0C     Current survivor space 0 capacity (KB).
  33  * S1C     Current survivor space 1 capacity (KB).
  34  * S0U     Survivor space 0 utilization (KB).
  35  * S1U     Survivor space 1 utilization (KB).
  36  * EC      Current eden space capacity (KB).
  37  * EU      Eden space utilization (KB).
  38  * OC      Current old space capacity (KB).
  39  * OU      Old space utilization (KB).
  40  * MC      Current metaspace capacity (KB).
  41  * MU      Metaspace utilization (KB).
  42  * CCSC    Compressed Class Space capacity
  43  * CCSU    Compressed Class Space utilization
  44  * YGC     Number of young generation GC Events.
  45  * YGCT    Young generation garbage collection time.
  46  * FGC     Number of full GC events.
  47  * FGCT    Full garbage collection time.
  48  * GCT     Total garbage collection time.
  49  *
  50  */
  51 package utils;
  52 
  53 import common.ToolResults;
  54 
  55 public class JstatGcResults extends JstatResults {
  56 
  57     public JstatGcResults(ToolResults rawResults) {
  58         super(rawResults);
  59     }
  60 
  61     /**
  62      * Checks the overall consistency of the results reported by the tool
  63      */
  64     @Override
  65     public void assertConsistency() {
  66 
  67         assertThat(getExitCode() == 0, "Unexpected exit code: " + getExitCode());
  68 
  69         float OC = getFloatValue("OC");
  70         float OU = getFloatValue("OU");
  71         assertThat(OU <= OC, "OU > OC (utilization > capacity)");
  72 
  73         float MC = getFloatValue("MC");
  74         float MU = getFloatValue("MU");
  75         assertThat(MU <= MC, "MU > MC (utilization > capacity)");
  76 
  77         float CCSC = getFloatValue("CCSC");
  78         float CCSU = getFloatValue("CCSU");
  79         assertThat(CCSU <= CCSC, "CCSU > CCSC (utilization > capacity)");
  80 
  81         float S0C = getFloatValue("S0C");
  82         float S0U = getFloatValue("S0U");
  83         assertThat(S0U <= S0C, "S0U > S0C (utilization > capacity)");
  84 
  85         float S1C = getFloatValue("S1C");
  86         float S1U = getFloatValue("S1U");
  87         assertThat(S1U <= S1C, "S1U > S1C (utilization > capacity)");
  88 
  89         float EC = getFloatValue("EC");
  90         float EU = getFloatValue("EU");
  91         assertThat(EU <= EC, "EU > EC (utilization > capacity)");
  92 
  93         int YGC = getIntValue("YGC");
  94         float YGCT = getFloatValue("YGCT");
  95         assertThat(YGCT >= 0, "Incorrect time value for YGCT");
  96         if (YGC > 0) {
  97             assertThat(YGCT > 0, "Number of young generation GC Events is " + YGC + ", but YGCT is 0");
  98         }
  99 
 100         float GCT = getFloatValue("GCT");
 101         assertThat(GCT >= 0, "Incorrect time value for GCT");
 102         assertThat(GCT >= YGCT, "GCT < YGCT (total garbage collection time < young generation garbage collection time)");
 103 
 104         int FGC = getIntValue("FGC");
 105         float FGCT = getFloatValue("FGCT");
 106         assertThat(FGCT >= 0, "Incorrect time value for FGCT");
 107         if (FGC > 0) {
 108             assertThat(FGCT > 0, "Number of full GC events is " + FGC + ", but FGCT is 0");
 109         }
 110 
 111         assertThat(GCT >= FGCT, "GCT < YGCT (total garbage collection time < full generation garbage collection time)");
 112 
 113         assertThat(checkFloatIsSum(GCT, YGCT, FGCT), "GCT != (YGCT + FGCT) " + "(GCT = " + GCT + ", YGCT = " + YGCT
 114                 + ", FGCT = " + FGCT + ", (YCGT + FGCT) = " + (YGCT + FGCT) + ")");
 115     }
 116 }