On systems with 64 or fewer processors, existing applications will operate correctly without modification. A NUMA node is assigned to a single group unless the capacity of the node exceeds the maximum group size. Physical processors that are physically close to one another are assigned to the same group. All of the logical processors in a core, and all of the cores in a physical processor, are assigned to the same group, if possible. For example, a system with 128 logical processors would have two processor groups with 64 processors in each group, not four groups with 32 logical processors in each group.įor better performance, the operating system takes physical locality into account when assigning logical processors to groups. The operating system minimizes the number of groups in a system. If the system is capable of hot-adding processors, the operating system allows space in groups for processors that might arrive while the system is running. When the system starts, the operating system creates processor groups and assigns logical processors to the groups. Windows Server 2008, Windows Vista, Windows Server 2003 and Windows XP: Processor groups are not supported. Systems with fewer than 64 logical processors always have a single group, Group 0. Processor groups are numbered starting with 0. Support for systems that have more than 64 logical processors is based on the concept of a processor group, which is a static set of up to 64 logical processors that is treated as a single scheduling entity. A physical processor is the same as a processor package, a socket, or a CPU. A physical processor can consist of one or more cores. A core is one processor unit, which can consist of one or more logical processors. A logical processor is one logical computing engine from the perspective of the operating system, application or driver. Systems with more than one physical processor or systems with physical processors that have multiple cores provide the operating system with multiple logical processors. This functionality is not available on 32-bit versions of Windows.
#Java for windows server 2008 r2 64 bit install
Unfortunately though, it didn’t work, perhaps because the update had already been checked for, and was in queue just wanting to be installed.Ĭhanging the key EnableJavaUpdate to 0 worked without needing to install updates, and stopped prompting non-admin users from installing updates.The 64-bit versions of Windows 7 and Windows Server 2008 R2 and later versions of Windows support more than 64 logical processors on a single computer. The official fix, per Sun, would be to create a new DWORD value called EnableAutoUpdateCheck, and set it to 0. To disable updates, navigate to HKEY_LOCAL_MACHINESOFTWAREWow6432NodeJavaSoftJava UpdatePolicy This is known as 64-bit registry redirection. This is similar to the automatic system controlled c:WindowsSysWOW64 directory for 32-bit compatiblity. There is a subkey located at HKLMSoftwareWow6432Node that contains the relevant settings for 32-bit applications, and within here, is the expected JavaSoft registry key.
Since the operating system is 64-bit, many of the registry keys seemed absent under HKLMSoftware. I finally tracked it down using the Autoruns tool from SysInternals. No users can actually install the available updates, nor can they disable the update check via the Control Panel.Īfter checking the usual candidates for auto runs, I was a little stumped. No daily users have administrative privileges, but all users are prompted to install updates. On a recently setup Windows Server 2008 R2 terminal server, Java was installed, and by default the JRE will enable automatic updates for all users.