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Virtual machine server JIT configuration fields | |
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| Field | Description |
Virtualization Mode | Emulation selects the Charon-SSP/4U or Charon-SSP/4V emulator, Intel VT-x/EPT informs the manager that the hardware prerequisites for running Charon-SSP/4U+ or Charon-SSP/4V+ are met. This option is inactive on Charon-SSP/4M or if Charon-SSP/4U+/4V+ is not installed. Attempting to run Charon-SSP/4U+/4V+ on insufficient hardware will cause the instance to exit with an error message. For example, Check if your AWS instance runs on dedicated hardware if you encounter such errors. |
DIT Optimization | This option controls the Dynamic Instruction Translation (DIT). DIT is a just in time compilation technology to dynamically optimize the SPARC instruction execution on x86-64 platforms. It can be set to OFF, Client JIT, or Server JIT(Charon-SSP/4U/4V only). The remainder of this table describes the Server JIT parameters (only available on Charon-SSP/4U and 4V). |
DIT page size | This option controls the size of the translation buffer holding the translated binary code that results from the DIT optimization. It can be increased to a maximum of 2048KB. This parameter should only be changed if the log file indicates that the DIT optimization was disabled because the translation buffer size was too small |
DIT code cache | Size of cache between 1024MB and 8192MB in steps of 1024MB. |
FP boost ratio | Defines the level of floating-point optimization. The parameter can be set to a value from 0 to 100. The default is 0 (= no boost). |
INT boost ratio | Defines the level of integer operation optimization. The parameter can be set to a value from 0 to 100. The default is 100 (= maximum boost). The higher the value the more resources are required. Hence high values are likely to provide most benefit if the guest system applications run for a long time. |
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