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es/disclaim_coasting_time_free - Control EM usage against operating system
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| Parameter : es/disclaim_coasting_time_free |
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| Short description: EM memory release after threshold value exceeded |
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| Parameter Description : |
| ----------------------- |
| |
| Background: |
| ------------ |
| You can use this group of instance profile parameters (see below) to |
| control the release of memory for the operating system, depending on |
| the fill level of the Extended Memory and minimize the associated |
| disadvantages. |
| Memory that is above the settable threshold in Extended Memory is |
| always released for the operating system. |
| As soon as this threshold is exceeded, memory below this threshold |
| can also be released for the operating system for a settable period |
| of time. |
| It is also possible, when releasing EM blocks, to release an upper |
| part of the EM block, of definable size, for the operating system. |
| |
| |
| es/disclaim_coasting_time_free determines, in a similar way to |
| the parameter %%es/disclaim_coasting_time_alloc%%, how long the |
| system should wait after the threshold value specified by |
| %%es/disclaim_threshold_MB%% is exceeded when a block is released |
| before releasing the block for the OS. |
| Background: If there is a high level of load, a block released for |
| the SAP system will probably be written to the swap space, that is, |
| to the hard disk. However, since the content is obsolete, it is |
| better from a performance point-of-view to release this for the OS. |
| |
| See also SAP Note 724140. |
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| Application area: Extended memory |
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| Unit : Seconds |
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| Default value: 0 |
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| Who is permitted to make changes : All |
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| Limitations for Operating Systems: None |
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| Limitations for Database Systems: None |
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| Other Parameters Affected or Dependent: |
| %%es/blockdisclaimsize_KB%% |
| %%es/disclaim_threshold_MB%% |
| %%es/disclaim_coasting_time_alloc%% |
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| Valid Input, Formats, Areas: 0 - 32000 |
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| Short Description : Control EM usage against operating system
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| Applications Area : ExtMemory
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| Parameter Type : I
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| Changes allowed : X
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| Valid for Operating System : *
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| Dynamic switchable :
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| Same on all Servers :
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| Minimum : 0
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| Maximum : 32000
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