Java 1.6 mac jdk install#
Java 1.6 mac jdk update#
Java 1.6 mac jdk full#
Java 1.6 mac jdk code#
Java 1.6 mac jdk Offline#

Linux RPM in self-extracting files jdk-6u21-linux-ia64-rpm.bin, jre-6u21-linux-ia64-rpm.bin.Linux self-extracting files jdk-6u21-linux-ia64.bin, jre-6u21-linux-ia64.bin and.

Java 1.6 mac jdk install#

The JDK, JRE for Linux 64-bit comes bundled in two install formats: The installation procedure installs the JRE or JDK 6u21 but not the Java Plugin or Java Web Start. JDK, JRE Installation for Linux (Itanium® architecture) Note, during JRE installation Java executables including java.exe are not copied to the Windows System directory.

Java 1.6 mac jdk Offline#

To install, download jdk-6u21-windows-ia64.exe or jre-6u21-windows-ia64.exe file and then follow the 32-bit Windows JDK installation or 32-bit Windows JRE installation 'Windows Offline Installation' instructions. The installation procedure installs the JDK or JRE 6u21 but not the Java Plugin or Java Web Start. JDK, JRE Installation for Microsoft Windows (Itanium® architecture) Windows Server 2008 SP2, R2 for Itanium-based Systems The value of the Xmn option should be less than about 80% of the Xmx value.

Xmx, Xms, Xmn should have sufficiently large values.

XX:+UseCompressedOops if heap size is less than 32GB.

The following set of command line options is recommended for running high performance server applications: The G1 garbage collector is still experimental and is not recommended for production use yet.

XX:TicksTimeInterval= - specifies the interval in the units used by ITC (internal time counter).

XX:TicksTimeInterval= - enables the optimization with the default time interval (about one millisecond).

XX:TicksTimeInterval=0 - disables the optimization (default).

This optimization is applied in Xcomp or Xmixed modes only. The optimization caches the values returned by gettimeofday in thread local variables to avoid the system call for certain time intervals. It may noticeably boost performance on workloads which intensively call this function.

XX:TicksTimeInterval= - controls the optimization of gettimeofday system calls on Linux.

Particularly, XX:+DoGlobalScheduling (and consequently XX:+AggressiveOpts which also turns it on) is not compatible with XX:+SpecialStringEquals.

Please note that other combinations of these options (besides all three off or all three on) were not comprehensively tested and should be considered experimental. All three are turned on (XX:+DoGlobalScheduling XX:+DoControlSpeculation, XX:+DoDataSpeculation) if XX:+AggressiveOpts is specified. These two options can take effect only if DoGlobalScheduling is also enabled.Īll three options are off by default. These two options turn on special Itanium instruction scheduler modes in which it tries to generate control-speculative and data-speculative memory reads respectively which can sometimes improve performance. There are additional command line options to control the scheduler: XX:+DoControlSpeculation, XX:+DoDataSpeculation.

Java 1.6 mac jdk code#

XX:+DoGlobalScheduling turns on the Itanium global instruction scheduler which tries to reorder compiled code instructions for better performance.

They can be switched on/off using the following command line options: The features may improve performance on some workloads. Several new Itanium specific enhancements are available in the JDK 6u21 for the Itanium® architecture.

Features and Itanium Specific Command Line Options.

Red Hat Enterprise Linux 4.0 is not supported.

Java 1.6 mac jdk update#

See changes in 1.6.0_21 common for all platforms in Java SE 6 Update 21 Release Notes.įor 6u21, support has been added for Windows Server 2008 R2 and SP2.

Changes in 1.6.0_21 (6u21) for the Itanium® architecture Only offline installation is available for JDK, JRE 6u21 for the Itanium® architecture. Please refer to JDK tools and Utilities for JDK tools description.

JavaDB (JavaDB is included only into Linux self-extracting JDK distributive).

The following JDK, JRE tools are not included in JDK, JRE 6u21 for the Itanium® architecture release: Included in JDK 6u21 for the Itanium® architecture is version 17.0 of the Java HotSpot Server Virtual Machine.

Java 1.6 mac jdk full#

The full internal version number for this update release is 1.6.0_21-b0702 (where 'b' means 'build'). About 1.6.0_21 (6u21) for the Itanium® architectureġ.6.0_21 for the Itanium® architecture is a port of JDK 6 update 21 to the Itanium® (64 bit) architecture. Please see the Update Release Notes Index for links to the Itanium® architecture port Release Notes for each update and a link to the initial Java SE 6 Release Notes.