On solaris10, Performance of JDK1.6_12/JDK1.6_19 is worse than JDK1.5_22?
1. My test is ON solaris 10
bash-3.00# cat /etc/release
Solaris 10 5/08 s10s_u5wos_10 SPARC
Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
Use is subject to license terms.
Assembled 24 March 2008
T-3000 Recovery Version: T3.04.01.01 Tue Nov 25 08:25:07 CST 2008
bash-3.00#
bash-3.00# showrev
Hostname: T2000G2
Hostid: 84cb7384
Release: 5.10
Kernel architecture: sun4v
Application architecture: sparc
Hardware provider: Sun_Microsystems
Domain: emsdomain
Kernel version: SunOS 5.10 Generic_137111-052. My test code:
public class Test {
public static void main(String[] args){
long start = System.currentTimeMillis();
int n=0;
for (long i=0;i<100000000;i++){
n ++;
System.out.println("time: "+(System.currentTimeMillis()-start)/1000.0);
}3.Test result
a) Default JDK is JDK1.6_12.
It print:
bash-3.00# java Test
time: 2.834b) Latest JDK1.6_19:
It print:
bash-3.00# java Test
time: 2.912c) JDK1.5_22
It print:
bash-3.00# java Test
time: 1.0394.Summary:
JDK1.6_12/JDK1.6_19 is almost *3 times slower than* JDK1.5_22.
After J2SE_Solaris_10_Recommended.zip is installed(ONLY part of them is installed successfully),
the result is the same!!!
Does this because the solaris 10 OS is not patched with the latest patch[10_Recommended.zip]?
Edited by: xiangyingbing on Apr 8, 2010 8:31 PM
I am wondering why the default JDK1.6_12 on solaris is sooooooooooooooooo slow！！！
I am wondering why the default JDK1.6_12 on solaris is sooooooooooooooooo slow！！！
I am wondering why the default JDK1.6_12 on solaris is sooooooooooooooooo slow！！！
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import java.io.*;
import java.util.HashMap;
import java.util.Hashtable;
* Created on May 13, 2003
* @author llai
* Driver to test the access of hash table on various platforms.
public class Driver
public static void main(String[] args)
* Obtain the following input values:
* 1. Number of Elements
* - The number of elements in the hash table
* 2. Size of Element
* - The size of each element in the hash table
* 3. Number of threads
* - The number of concurrent threads in the test
* 4. Focused Access
* - Determines whether each thread access the same element or a random element
* 5. Number of Accesses
* - The number of accesses which each thread will complete before exiting
* 6. Start offset
* - The number of accesses at the beginning which will not be timed
* 7. End offset
* - The number of accesses at the end which will not be timed.
* Initialize all input variables.
* SET DEFAULT VALUES HERE...
int numberOfElements = 10000;
int sizeOfElement = 100;
int numberOfThreads = 25;
boolean focusedAccess = true;
int numberOfAccesses = 1000000;
int startOffset = 100000;
int endOffset = 100000;
boolean mapOrTable = false;
* Input number of elements.
try
BufferedReader in =
new BufferedReader(new InputStreamReader(System.in));
String tempInput;
boolean inputInvalid = true;
while (inputInvalid)
System.out.print(
"Enter a non-negative value for the number of elements to be in the hashtable: ");
tempInput = in.readLine();
if (tempInput.equals(""))
System.out.println("default value used.\n");
inputInvalid = false;
else
try
numberOfElements = Integer.parseInt(tempInput);
if (numberOfElements >= 0)
inputInvalid = false;
else
System.out.println(
"You entered a negative value for the number of elements. Try again.");
catch (NumberFormatException nfe)
System.out.println(
"You entered an invalid value for the number of elements. Try again.");
* Input size of elements.
inputInvalid = true;
while (inputInvalid)
System.out.print(
"Enter the size of each element in the hash table (ie. length of a string): ");
tempInput = in.readLine();
if (tempInput.equals(""))
System.out.println("default value used.\n");
inputInvalid = false;
else
try
sizeOfElement = Integer.parseInt(tempInput);
if (sizeOfElement >= 0)
inputInvalid = false;
else
System.out.println(
"You entered a negative value for the size of elements. Try again.");
catch (NumberFormatException nfe)
System.out.println(
"You entered an invalid value for the size of elements. Try again.");
* Input number of threads.
inputInvalid = true;
while (inputInvalid)
System.out.print(
"Enter the number of concurrent threads in the test: ");
tempInput = in.readLine();
if (tempInput.equals(""))
System.out.println("default value used.\n");
inputInvalid = false;
else
try
numberOfThreads = Integer.parseInt(tempInput);
if (numberOfThreads >= 0)
inputInvalid = false;
else
System.out.println(
"You entered a negative value for the number of threads. Try again.");
catch (NumberFormatException nfe)
System.out.println(
"You entered an invalid value for the number of threads. Try again.");
* Input focused access option.
inputInvalid = true;
while (inputInvalid)
System.out.print(
"Focused access? Determines whether each thread access the same element or a random element (y/n or blank for default): ");
String tempFocusedAccess = in.readLine();
if (tempFocusedAccess.equals("y"))
focusedAccess = true;
inputInvalid = false;
else if (tempFocusedAccess.equals("n"))
focusedAccess = false;
inputInvalid = false;
else if (tempFocusedAccess.equals(""))
System.out.println("default value used.\n");
inputInvalid = false;
else
System.out.println(
"You entered an invalid input for focused access. Try again.");
* Input number of accesses.
inputInvalid = true;
while (inputInvalid)
System.out.print(
"Enter a non-negative value for the number of accesses each thread will complete: ");
tempInput = in.readLine();
if (tempInput.equals(""))
System.out.println("default value used.\n");
inputInvalid = false;
else
try
numberOfAccesses = Integer.parseInt(tempInput);
if (numberOfAccesses >= 0)
inputInvalid = false;
else
System.out.println(
"You entered a negative value for the number of accesses per thread. Try again.");
catch (NumberFormatException nfe)
System.out.println(
"You entered an invalid value for the number of accesses per thread. Try again.");
* Input start offset.
inputInvalid = true;
while (inputInvalid)
System.out.print("Enter the start offset: ");
tempInput = in.readLine();
if (tempInput.equals(""))
System.out.println("default value used.\n");
inputInvalid = false;
else
try
startOffset = Integer.parseInt(tempInput);
if (startOffset <= numberOfAccesses
&& startOffset >= 0)
inputInvalid = false;
else
System.out.println(
"You entered an invalid input for start offset. Try again.");
catch (NumberFormatException nfe)
System.out.println(
"You entered an invalid value for the start offset. Try again.");
* Input end offset.
inputInvalid = true;
while (inputInvalid)
System.out.print("Enter the end offset: ");
tempInput = in.readLine();
if (tempInput.equals(""))
System.out.println("default value used.\n");
inputInvalid = false;
else
try
endOffset = Integer.parseInt(tempInput);
if (endOffset <= numberOfAccesses && endOffset >= 0)
inputInvalid = false;
else
System.out.println(
"You entered an invalid input for end offset. Try again.");
catch (NumberFormatException nfe)
System.out.println(
"You entered an invalid value for the end offset. Try again.");
* Create a Hashtable, or a Hashmap?
inputInvalid = true;
while (inputInvalid)
System.out.print(
"Use HashMap or HashTable (enter m for HashMap, t for HashTable)? ");
String tempMapTable = in.readLine();
if (tempMapTable.equals("m"))
mapOrTable = true;
inputInvalid = false;
else if (tempMapTable.equals("t"))
mapOrTable = false;
inputInvalid = false;
else if (tempMapTable.equals(""))
System.out.println("default value used.\n");
inputInvalid = false;
else
System.out.println(
"You entered an invalid input. Try again.");
catch (IOException i)
System.out.println("IOException caught: " + i.getMessage());
* End of obtaining input section. *****
* Create a HashTable or HashMap of the size and distribution specified.
Object hash;
if (mapOrTable)
// create a HashMap
hash = new HashMap(numberOfElements);
else
// create a HashTable
hash = new Hashtable(numberOfElements);
char c[] = new char[sizeOfElement];
for (int i = 0; i < numberOfElements; i++)
if (mapOrTable)
((HashMap) hash).put(new Integer(i), new String(c));
else
((Hashtable) hash).put(new Integer(i), new String(c));
c = null; // Explicitly release c.
* Create the specified number of threads.
AccessorThread accessor[] = new AccessorThread[numberOfThreads];
long seed;
for (int i = 0; i < numberOfThreads; i++)
// Have a different seed for creating random number for each thread.
seed = System.currentTimeMillis() + 77 * i;
accessor[i] =
new AccessorThread(
hash,
numberOfElements,
focusedAccess,
numberOfAccesses,
startOffset,
endOffset,
seed);
// Start the thread.
accessor.start();
* Make main wait for all threads to die before continuing.
try
for (int i = 0; i < numberOfThreads; i++)
accessor[i].join();
catch (InterruptedException ie)
System.out.println(
"InterruptedException caught: " + ie.getMessage());
* Threads have now been run, so create a statistical report.
System.out.println(
"The following settings were used for this test: \n"
+ "Number of elements: "
+ numberOfElements
+ "\n"
+ "Size of elements: "
+ sizeOfElement
+ "\n"
+ "Number of threads: "
+ numberOfThreads
+ "\n"
+ "Focused access: "
+ focusedAccess
+ "\n"
+ "Number of accesses: "
+ numberOfAccesses
+ "\n"
+ "Start offset: "
+ startOffset
+ "\n"
+ "End offset: "
+ endOffset);
System.out.print("HashMap or HashTable: ");
if (mapOrTable)
System.out.println("HashMap.\n");
else
System.out.println("HashTable.\n");
System.out.println("Statistic report: ");
long avgTime;
long avgTotalTime = 0;
for (int i = 1; i <= numberOfThreads; i++)
avgTotalTime += accessor[i - 1].getAccessTime();
avgTime = accessor[i - 1].getAccessTime() / numberOfAccesses;
System.out.println(
"Thread "
+ i
+ "... "
+ accessor[i
- 1].getStatus()
+ " Total access time: "
+ accessor[i
- 1].getAccessTime()
+ " ms. Avg individual access time: "
+ avgTime
+ " ms.");
avgTotalTime = avgTotalTime / numberOfThreads;
// Make it an average over all threads.
System.out.println(
"\nThe average total access time over all threads: "
+ avgTotalTime
+ " ms.");
File#2: AccessorThread.java
import java.util.Hashtable;
import java.util.HashMap;
import java.util.Random;
* Created on May 13, 2003
* @author llai
* Threaded class that accesses a hashtable a certain number of times
* and measures the access time for a certain number of accesses.
public class AccessorThread extends Thread
private Object hash;
private int numberOfElements;
private boolean focusedAccess;
private int numberOfAccesses;
private int startOffset;
private int endOffset;
private long seed;
private long totalAccessTime;
private String status;
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* @param h the Hashtable or HashMap
* @param keyToAccess the key to access for this thread
* @param numberOfAccesses the number of access times
* @param startOffset the start offset
* @param endOffset the end offset
public AccessorThread(
Object h,
int numberOfElements,
boolean focusedAccess,
int numberOfAccesses,
int startOffset,
int endOffset,
long seed)
this.hash = h;
this.numberOfElements = numberOfElements;
this.focusedAccess = focusedAccess;
this.numberOfAccesses = numberOfAccesses;
this.startOffset = startOffset;
this.endOffset = endOffset;
this.seed = seed;
status = "Status: alive.";
* @return the total access time.
public long getAccessTime()
return totalAccessTime;
* @return the status of the thread.
public String getStatus()
return status;
* @return the seed.
public long getSeed()
return seed;
* Run method, accesses the hashtable at keyToAccess for
* numberOfAccesses times, and measures the response time for
* a certain number of those accesses.
public void run()
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* and only up to (numberOfAccesses - endOffset) accesses.
* Access one value if focusedAccess on.
* Access random values if focusedAccess off.
Random numGenerator = new Random(seed);
if (focusedAccess)
Object keyToAccess =
new Integer(numGenerator.nextInt(numberOfElements));
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int i;
// Check if hash is a HashMap or Hashtable.
if (hash instanceof HashMap)
for (i = 0; i < startOffset; i++)
((HashMap) hash).get(keyToAccess);
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long startTime = System.currentTimeMillis();
while (i < numberOfAccesses - endOffset)
((HashMap) hash).get(keyToAccess);
i++;
long stopTime = System.currentTimeMillis();
totalAccessTime = stopTime - startTime;
// Finish accessing the remainder of endOffset times if endOffset is not >= (numberOfAccesses - startOffset).
while (i < numberOfAccesses)
((HashMap) hash).get(keyToAccess);
i++;
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for (i = 0; i < startOffset; i++)
((Hashtable) hash).get(keyToAccess);
// Now start timing for the accesses.
long startTime = System.currentTimeMillis();
while (i < numberOfAccesses - endOffset)
((Hashtable) hash).get(keyToAccess);
i++;
long stopTime = System.currentTimeMillis();
totalAccessTime = stopTime - startTime;
// Finish accessing the remainder of endOffset times if endOffset is not >= (numberOfAccesses - startOffset).
while (i < numberOfAccesses)
((Hashtable) hash).get(keyToAccess);
i++;
// Or else !focusedAccess, therefore access random values.
else
* Get random keys to access and store in an array of Integer objects.
* Limit the array to 1000 integer objects.
int numberOfRandomInts = numberOfAccesses;
if (numberOfAccesses > 1000)
numberOfRandomInts = 1000;
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long startTime = System.currentTimeMillis();
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while (i < numberOfAccesses)
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try {
Class.forName("oracle.jdbc.driver.OracleDriver").newInstance();
Connection c = DriverManager.getConnection(
"jdbc:oracle:thin:@localhost:1521:orcl","scott","tiger");
System.out.println("Got connection.");
c.close();
} catch (Exception e) {
System.out.println("Error: " + e); -
J2sdk1.4 takes higher response time in database interaction than jdk1.3
Hi All
I am working on performance issues regarding response time . i have upgraded my system from jdk1.3 to j2sdk1.4 . I was expecting the performance gain in terms of response time in j2sdk1.4. but to my surprise it shows varied results with my application. it shows that j2sdk1.4 is taking higher time for executing the application when it has to deal with database. I am using oracle 9i as the backend database server.
if any body has the idea about, why j2sdk1.4 is showing higher responce time while interacting with database as compare to jdk1.3. then do let me know this.
Thanx in advanceHi All
I am working on performance issues regarding response time . i have upgraded my system from jdk1.3 to j2sdk1.4 . I was expecting the performance gain in terms of response time in j2sdk1.4. but to my surprise it shows varied results with my application. it shows that j2sdk1.4 is taking higher time for executing the application when it has to deal with database. I am using oracle 9i as the backend database server.
if any body has the idea about, why j2sdk1.4 is showing higher responce time while interacting with database as compare to jdk1.3. then do let me know this.
Thanx in advance -
How does xalan.jar work with jdk1.3.1 and not work with jdk1.4.1
Hi,
i am using java, xalan, xerces for web development. The environment is jdk1.4.1, xerces.jar, xalan.jar. i am facing problem while transforming xml, xsl. Its giving the following error
java.lang.NoSuchMethodError: org.apache.xalan.xslt.Process.getDefaultLiaison()Ljava/lang/String;
at org.apache.xalan.xslt.XSLTEngineImpl.(XSLTEngineImpl.java:367)
at org.apache.xalan.xslt.XSLTProcessorFactory.getProcessor(XSLTProcessorFactory.java:79)
I tried with jdk1.3.1, xalan.jar, xerces.jar. Its working fine. Can anyone tell me what is the problem with jdk1.4.1 ?
Regards
AshokI have the same problem, but the version within SUN seems imcomplete,what version is ?
For example I am using the xsl tag library provided by Apache (I know this now deprecated). In its ApplyTag.java it uses XSLTDataSource this is not in the SUN 1.4 distribution so it falls over. If I add XALAN 1.0.1 it falls over because it on getDefaultLiason() because it starts loading somne classes from rt.jar and some from xalan.jar, how are you meant to override this. -
Error in creatinf XML file in JDK1.5.0 but it works in jdk1.4.2
currently i m using jdk1.5.0 with netbeans4.1, i have code for creating xml file which was work well and succefully write root element via root.tostring() method to file with jdk1.4.2 and it is returning null while using jdk1.5.0. i am using appendchild,createtextnode ,createelement method for this. pls do the need ful. its too urgent
This error was verified by the java people, to be a new bug.
It's bugID is 5071879 -
Want to use something faster than jdk1.2
Is there an oracle jdbc driver available for IBM's JIT compiler? I have been trying to get IBM's java to work with the classes11.zip file, but with no luck (my oracle version is: 8.1.6.1.0).
Also, I see in the FAQ there is a reference to a classes12.zip file, but I haven't found this file anywhere, not even in later versions of oracle I have downloaded. classes11.zip works fine with my copy of Suns jdk1.2, so I am wondinering whether I am missing classes12.zip.
Thanks in advance for any help,
Andy
Some info on the IBM Java I would like to use:
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0)
nullHi Kevin,
Thank you for participating in the Small Business support community. My name is Nico Muselle from Cisco Sofia SBSC.
Indeed this is the best option, to reserve the default (management) VLAN for what it is intended for ... management and set your clients to use another VLAN. I'm not sure if it is possible to separate SNMP traffic on a Windows XP machine and send that over the management VLAN, however, what you could do, is enable inter-vlan routing (either on the router, or set the switch to L3) and create an access-list that only allows the snmp traffic to be routed to and from the management VLAN.
This way you can keep your SNMP server in the management VLAN.
Wouldn't that be an option ?
Best regards,
Nico Muselle
Sr. Network Engineer - CCNA -
JDK1.4 javax.Print Any one tried JDK1.4 Printing
I am trying JDK1.4 Printing. Also i want to have it plugable for 1.3.x and 1.2.X. JRE
so you have any solution for that.
please mail me asap
RajeshCould you be more spcefice , or can you redescribe the problem
-
IPhoto 6.0.3 (293) Performance Worse Than Any Other Version
Interesting. I have 9,990 photos and my iPhoto 6 just came to a crawl. I have 1.5GB of memory. Something is definitely wrong. When I start iPhoto it appears to behave normally for about 30 seconds.
I've read many of the other speed/performance/slow threads in this forum. Here's what I've tried:
I have all my Rolls collapsed. After doing a couple transactions (eg: scrolling up/down or editing one picture), iPhoto freezes.
When this happens I'll open Activity Monitor and find my dual CPUs pegged at about 97%.
I've rebuilt my library, my small thumbnails, my large thumbnails, loaded IPLM (iPhoto Library Manager) and rebuilt the library using its copy function, and I've even moved my library to another volume. Nothing has worked. I've even run Disk Warrior against my volume that hosts iPhoto, reset permissions and run Disk Utility and verified that the hard drive is OK. I've also removed my iPhoto preference file. Nothing has helped.
I'm beside myself.
I'm currently running a manual rebuild test (UGGGH!!!!!) to see it's a problem with my existing library's data (i.e. corruption?) or my instance of iPhoto.
(NOTE: a smaller, newer library helps but I don't want to lose my meta data. That's, frankly, the most important feature of iPhoto for my wife and me.)
I've never heard the fans on my Dual G4 PPC (mirror door model) run so loudly. Of course, I've rebooted several times too.
If anyone has any other suggestions, please let me know. I have a backup but I feer the backup contains the same, assumed, corrupt files as my active volume.
Dual 1.25GHz G4 PowerPC Mac OS X (10.4.6)G4Monster:
Have you tried rebuilding the library with iPLM and it's File->Rebuild Library... menu option? That create a new, library, copying the files and rebuilding the database, etc.? Or is that what you meant by "using its copy function,"?
If you find you have to create new libraries in the end, there is a way to preserve the comments and keywords. See Tutorial #1 on how to preserve them.
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