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Commit 1f664f68 1f664f68078814f65bf3dccd769bd3d202538a1b by Christian Gerdes
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Ökat nogrannheten överlag genom att använda doubles istället för long 

och undvika avrundningar i både LongDelta, Collector och OraMon. Skapat 
en ny klass DoubleDelta som kan hantera värden från Oracle med
decimaler,
behövdes för att mäta LOAD från OSSTAT. Testat med både piloop och
cpuloop
i oracle sql (som tar en hel cpu) och mätvärden ser ut att stämma bra.
1 parent d413c61e
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Showing 10 changed files with 100 additions and 30 deletions
1 /OraMonRESTgetMetrics.class
2 /OraMonRESTgetData.class 1 /OraMonRESTgetData.class
2 /OraMonRESTgetMetrics.class
......
...@@ -76,9 +76,9 @@ public class OraMonRESTgetMetrics extends HttpServlet { ...@@ -76,9 +76,9 @@ public class OraMonRESTgetMetrics extends HttpServlet {
76 for (OraMon item : list) { 76 for (OraMon item : list) {
77 if (list.size() > 1) aStr = " " + item.getDBName(); 77 if (list.size() > 1) aStr = " " + item.getDBName();
78 sb.append("{\"name\":\"Cpus (#)" + aStr + "\",\"value\":" + item.getNumberOfCPUs() + "}"); 78 sb.append("{\"name\":\"Cpus (#)" + aStr + "\",\"value\":" + item.getNumberOfCPUs() + "}");
79 sb.append(",{\"name\":\"Cpu Time (ms/s)" + aStr + "\",\"value\":" + item.getCPUTimePerSecond() + "}"); 79 sb.append(",{\"name\":\"Cpu Time (us/s)" + aStr + "\",\"value\":" + item.getCPUTimePerSecond() + "}");
80 sb.append(",{\"name\":\"Cpu Usage (%)" + aStr + "\",\"value\":" + item.getCPUPercent() + "}"); 80 sb.append(",{\"name\":\"Cpu Usage (%)" + aStr + "\",\"value\":" + item.getCPUPercent() + "}");
81 sb.append(",{\"name\":\"OS Cpu Usage (%)" + aStr + "\",\"value\":" + item.getOsBusyPercent() + "}"); 81 sb.append(",{\"name\":\"OS Busy (%)" + aStr + "\",\"value\":" + item.getOsBusyPercent() + "}");
82 sb.append(",{\"name\":\"OS Load (#)" + aStr + "\",\"value\":" + item.getOsLoad() + "}"); 82 sb.append(",{\"name\":\"OS Load (#)" + aStr + "\",\"value\":" + item.getOsLoad() + "}");
83 sb.append(",{\"name\":\"OS Load per Cpu (#)" + aStr + "\",\"value\":" + item.getOsLoadPerCPU() + "}"); 83 sb.append(",{\"name\":\"OS Load per Cpu (#)" + aStr + "\",\"value\":" + item.getOsLoadPerCPU() + "}");
84 sb.append(",{\"name\":\"Logical Reads (#/s)" + aStr + "\",\"value\":" + item.getLogicalReadsPerSecond() + "}"); 84 sb.append(",{\"name\":\"Logical Reads (#/s)" + aStr + "\",\"value\":" + item.getLogicalReadsPerSecond() + "}");
......
1 <?xml version="1.0" encoding="UTF-8"?> 1 <?xml version="1.0" encoding="UTF-8"?>
2 <classpath> 2 <classpath>
3 <classpathentry kind="src" path=""/> 3 <classpathentry kind="src" path=""/>
4 <classpathentry exported="true" kind="lib" path="lib/ojdbc6.jar"/> 4 <classpathentry exported="true" kind="lib" path="lib/ojdbc6.jar"/>
5 <classpathentry exported="true" kind="lib" path="lib/ojdbc5.jar"/> 5 <classpathentry exported="true" kind="lib" path="lib/ojdbc5.jar"/>
6 <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/> 6 <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
7 <classpathentry kind="output" path=""/> 7 <classpathentry kind="output" path=""/>
8 </classpath> 8 </classpath>
......
...@@ -5,3 +5,4 @@ ...@@ -5,3 +5,4 @@
5 /TestRunner.class 5 /TestRunner.class
6 /WGet.class 6 /WGet.class
7 /Utils.class 7 /Utils.class
8 /DoubleDelta.class
......
...@@ -48,7 +48,7 @@ class Collector { ...@@ -48,7 +48,7 @@ class Collector {
48 return 0; 48 return 0;
49 } 49 }
50 50
51 public long getPerSecValue(String name) throws Throwable { 51 public double getPerSecValue(String name) throws Throwable {
52 LongDelta myDelta = null; 52 LongDelta myDelta = null;
53 for(int x = 0; x<list.size() && myDelta == null; x++) { 53 for(int x = 0; x<list.size() && myDelta == null; x++) {
54 if(name.equals(list.get(x).name)) { 54 if(name.equals(list.get(x).name)) {
......
1 package se.lil.om;
2
3 import java.sql.ResultSet;
4 import java.sql.Timestamp;
5
6 public class DoubleDelta {
7 public String name = null;
8 public Double curValue = null;
9 public Double lastValue = null;
10 public Timestamp lastFetch = null;
11 public Timestamp curFetch = null;
12
13 public void update(ResultSet rset) throws Throwable{
14 update(rset, false);
15 }
16 public void update(ResultSet rset, boolean convert) throws Throwable{
17 rset.next();
18 this.lastFetch = this.curFetch;
19 this.curFetch = rset.getTimestamp(1);
20 this.lastValue = this.curValue;
21 if(convert)
22 this.curValue = rset.getDouble(2)/1000;
23 else
24 this.curValue = rset.getDouble(2);
25 rset.close();
26 }
27 public double getPerSecondValue() throws Throwable {
28 if(this.curValue != null && this.lastValue != null && this.lastFetch != null && this.curFetch != null) {
29 // We have values, calculate the number of gets per second
30 double numMilliSeconds = this.curFetch.getTime() - this.lastFetch.getTime();
31 double delta = this.curValue - this.lastValue;
32 double perMilli = delta/numMilliSeconds;
33 return perMilli * 1000;
34 } else {
35 return 0;
36 }
37 }
38 public double getCurrentValue() throws Throwable {
39 if(this.curValue != null) return this.curValue;
40 else return 0;
41 }
42 public double getSeconds() throws Throwable {
43 if(this.lastFetch != null && this.curFetch != null) {
44 double numSeconds = this.curFetch.getTime() - this.lastFetch.getTime();
45 return numSeconds/1000;
46 }
47 return 0;
48 }
49 public long getMilliSeconds() throws Throwable {
50 if(this.lastFetch != null && this.curFetch != null) {
51 return this.curFetch.getTime() - this.lastFetch.getTime();
52 }
53 return 0;
54 }
55 }
...@@ -24,12 +24,13 @@ class LongDelta { ...@@ -24,12 +24,13 @@ class LongDelta {
24 this.curValue = rset.getLong(2); 24 this.curValue = rset.getLong(2);
25 rset.close(); 25 rset.close();
26 } 26 }
27 public long getPerSecondValue() throws Throwable { 27 public double getPerSecondValue() throws Throwable {
28 if(this.curValue != null && this.lastValue != null && this.lastFetch != null && this.curFetch != null) { 28 if(this.curValue != null && this.lastValue != null && this.lastFetch != null && this.curFetch != null) {
29 // We have values, calculate the number of gets per second 29 // We have values, calculate the number of gets per second
30 long numSeconds = (this.curFetch.getTime() - this.lastFetch.getTime()) / 1000; 30 double numMilliSeconds = this.curFetch.getTime() - this.lastFetch.getTime();
31 long delta = this.curValue - this.lastValue; 31 double delta = this.curValue - this.lastValue;
32 return delta/numSeconds; 32 double perMilli = delta/numMilliSeconds;
33 return perMilli * 1000;
33 } else { 34 } else {
34 return 0; 35 return 0;
35 } 36 }
...@@ -38,10 +39,16 @@ class LongDelta { ...@@ -38,10 +39,16 @@ class LongDelta {
38 if(this.curValue != null) return this.curValue; 39 if(this.curValue != null) return this.curValue;
39 else return 0; 40 else return 0;
40 } 41 }
41 public long getSeconds() throws Throwable { 42 public double getSeconds() throws Throwable {
42 if(this.lastFetch != null && this.curFetch != null) { 43 if(this.lastFetch != null && this.curFetch != null) {
43 long numSeconds = (this.curFetch.getTime() - this.lastFetch.getTime()) / 1000; 44 double numSeconds = this.curFetch.getTime() - this.lastFetch.getTime();
44 return numSeconds; 45 return numSeconds/1000;
46 }
47 return 0;
48 }
49 public long getMilliSeconds() throws Throwable {
50 if(this.lastFetch != null && this.curFetch != null) {
51 return this.curFetch.getTime() - this.lastFetch.getTime();
45 } 52 }
46 return 0; 53 return 0;
47 } 54 }
......
...@@ -47,20 +47,20 @@ public class OraMon { ...@@ -47,20 +47,20 @@ public class OraMon {
47 LongDelta cpuTime = new LongDelta(); 47 LongDelta cpuTime = new LongDelta();
48 public double getCPUPercent() throws Throwable { 48 public double getCPUPercent() throws Throwable {
49 double perSec = cpuTime.getPerSecondValue(); 49 double perSec = cpuTime.getPerSecondValue();
50 double totSec = numCpus * 1000; 50 double totSec = numCpus * 1000 * 1000;
51 double percent = (perSec / totSec) * 100; 51 double percent = (perSec / totSec) * 100;
52 return percent; 52 return percent;
53 } 53 }
54 54
55 public long getCPUTimePerSecond() throws Throwable { 55 public double getCPUTimePerSecond() throws Throwable {
56 return cpuTime.getPerSecondValue(); 56 return cpuTime.getPerSecondValue();
57 } 57 }
58 58
59 public long getPerSecondValue(String name) throws Throwable { 59 public double getPerSecondValue(String name) throws Throwable {
60 return getPerSecondValue(name, SYSSTAT); 60 return getPerSecondValue(name, SYSSTAT);
61 } 61 }
62 62
63 public long getPerSecondValue(String name, int table) throws Throwable { 63 public double getPerSecondValue(String name, int table) throws Throwable {
64 switch (table) { 64 switch (table) {
65 case OSSTAT: 65 case OSSTAT:
66 return colOsStat.getPerSecValue(name); 66 return colOsStat.getPerSecValue(name);
...@@ -78,16 +78,19 @@ public class OraMon { ...@@ -78,16 +78,19 @@ public class OraMon {
78 public double getOsBusyPercent() throws Throwable { 78 public double getOsBusyPercent() throws Throwable {
79 double idle = getPerSecondValue("IDLE_TIME", OSSTAT); 79 double idle = getPerSecondValue("IDLE_TIME", OSSTAT);
80 double busy = getPerSecondValue("BUSY_TIME", OSSTAT); 80 double busy = getPerSecondValue("BUSY_TIME", OSSTAT);
81 return busy/(busy+idle); 81 return 100*(busy/(busy+idle));
82 } 82 }
83 83
84 public long getOsLoad() throws Throwable { 84 // OS LOAD
85 return colOsStat.getCurrentValue("LOAD"); 85 DoubleDelta osLoad = new DoubleDelta();
86
87 public double getOsLoad() throws Throwable {
88 return osLoad.getCurrentValue();
86 } 89 }
87 90
88 public double getOsLoadPerCPU() throws Throwable { 91 public double getOsLoadPerCPU() throws Throwable {
89 double num = this.numCpus; 92 double num = this.numCpus;
90 double load = colOsStat.getCurrentValue("LOAD"); 93 double load = getOsLoad();
91 return load / num; 94 return load / num;
92 } 95 }
93 96
...@@ -119,7 +122,7 @@ public class OraMon { ...@@ -119,7 +122,7 @@ public class OraMon {
119 return cacheHitRatio * 100; 122 return cacheHitRatio * 100;
120 } 123 }
121 124
122 public long getLogicalReadsPerSecond() throws Throwable { 125 public double getLogicalReadsPerSecond() throws Throwable {
123 return getPerSecondValue("consistent gets") + getPerSecondValue("db block gets"); 126 return getPerSecondValue("consistent gets") + getPerSecondValue("db block gets");
124 } 127 }
125 128
...@@ -187,7 +190,11 @@ public class OraMon { ...@@ -187,7 +190,11 @@ public class OraMon {
187 //Set numCpus 190 //Set numCpus
188 this.numCpus = (int) colOsStat.getCurrentValue("NUM_CPUS"); 191 this.numCpus = (int) colOsStat.getCurrentValue("NUM_CPUS");
189 192
190 cpuTime.update(stmt.executeQuery("select systimestamp, value from V$SYS_TIME_MODEL where stat_name='DB CPU'"), true); 193 // Get DB CPU use time
194 cpuTime.update(stmt.executeQuery("select systimestamp, value from V$SYS_TIME_MODEL where stat_name='DB CPU'"));
195
196 // Get OS Load
197 osLoad.update(stmt.executeQuery("select systimestamp, value from V$OSSTAT where stat_name='LOAD'"));
191 198
192 //Get the entire V_$SYSSTAT table from DB 199 //Get the entire V_$SYSSTAT table from DB
193 colSysStat.update(stmt.executeQuery("select systimestamp, name, value from V$SYSSTAT")); 200 colSysStat.update(stmt.executeQuery("select systimestamp, name, value from V$SYSSTAT"));
......