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Bug
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Resolution: Fixed
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P4
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1.4.0, 1.4.1, 1.4.2
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mantis
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generic, x86, sparc
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generic, linux, solaris, solaris_8, windows_2000
Name: gm110360 Date: 08/02/2002
FULL PRODUCT VERSION :
Solaris 64-bit:
java version "1.4.0_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0_01-b03)
Java HotSpot(TM) Client VM (build 1.4.0_01-b03, mixed mode)
(The problem also appears in he 32-bit JDK).
Linux:
java version "1.4.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)
FULL OPERATING SYSTEM VERSION :
SunOS averia 5.8 Generic_108528-09 sun4u sparc SUNW,UltraAX-i2
ADDITIONAL OPERATING SYSTEMS :
Linux fora 2.4.18 #3 dl jun 3 14:55:25 CEST 2002 i686
unknown unknown GNU/Linux
A DESCRIPTION OF THE PROBLEM :
URLEncoder.encode shows severely degraded performance when
run concurrently by several threads.
REGRESSION. Last worked in version 1.3.1
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Run the attached program under 1.4.1_02.
Using the 2-parameter encode() method will show similar
results (although you won't be able to compare with 1.3.1's
behaviour).
You can also observe this by trying to run a multi-threaded
test on Jakarta JMeter. See
http://nagoya.apache.org/bugzilla/show_bug.cgi?id=11369 for
details.
EXPECTED VERSUS ACTUAL BEHAVIOR :
Expected:
$ time ~/jdk1.3.1/bin/java URLEncode
real
0m2.424s
user
0m1.040s
sys
0m0.100s
Actual:
$ time ~/j2sdk1.4.0/bin/java URLEncode
real
0m12.108s
user
0m5.330s
sys
0m0.290s
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
public class URLEncode extends Thread {
public static void main(String args[]) {
for (int i=0; i<10; i++) {
new URLEncode().start();
}
}
public void run() {
for (int i=0; i<1000; i++) {
String e= java.net.URLEncoder.encode("Aix? ?s una prova.");
}
}
}
---------- END SOURCE ----------
Release Regression From : 1.3.1_04
The above release value was the last known release where this
bug was known to work. Since then there has been a regression.
(Review ID: 160216)
======================================================================
- duplicates
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JDK-4756587 Performance of URLEncoder in 1.4.X is slower than 1.3.1_0X
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- Closed
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JDK-4731779 URLEncoder.encode() still really slow (provided optimization)
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- Closed
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JDK-5018964 BufferedWriter.lineSeparator member should be private static
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- Closed
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- relates to
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JDK-4407610 java.net.URLDecode.decode(st,"UTF-16") works incorrectly on '+' sign
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- Resolved
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