ZPAGEOPT parameter: Difference between revisions
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<dd><var class="product">Model 204 V7.4</var> | <dd><var class="product">Model 204 V7.4</var> | ||
</dl> | </dl> | ||
==Description== | ==Description== | ||
<p>ZPAGEOPT is a | <p> | ||
<p>ZPAGEOPT specifies | <var>ZPAGEOPT</var> is a User 0 parameter applicable to z/OS systems only. </p> | ||
<p>The following settings are valid:</p> | <p> | ||
<var>ZPAGEOPT</var> specifies the areas that should be allocated using 1MB pages.</p> | |||
<p> | |||
The following settings are valid:</p> | |||
<table> | <table> | ||
<tr><th>Setting</th><th>Meaning</th></tr> | <tr class="head"><th>Setting</th><th>Meaning</th></tr> | ||
<tr><th align="right"><var>X'0001'</var></th><td>Use 1MB pages for servers above the bar.</td></tr> | <tr><th align="right"><var>X'0001'</var></th><td>Use 1MB pages for servers above the bar.</td></tr> | ||
<tr><th align="right"><var>X'0002'</var></th><td>Use 1MB pages for buffers above the bar.</td></tr> | <tr><th align="right"><var>X'0002'</var></th><td>Use 1MB pages for buffers above the bar.</td></tr> | ||
<tr><th align="right"><var>X'0004'</var></th><td>Use 1MB pages for buffer hash cells above the bar.</td></tr> | <tr><th align="right"><var>X'0004'</var></th><td>Use 1MB pages for buffer hash cells above the bar.</td></tr> | ||
<tr><th align="right"><var>X'0008'</var></th><td>Use 1MB pages for buffer control blocks above the bar.</td></tr> | <tr><th align="right"><var>X'0008'</var></th><td>Use 1MB pages for buffer control blocks above the bar.</td></tr> | ||
<tr><th align="right"><var>X'0010'</var></th><td>Use 1MB pages for CCATEMP pages in storage above the bar.</td></tr> | <tr><th align="right"><var>X'0010'</var></th><td>Use 1MB pages for CCATEMP pages in storage above the bar.</td></tr> | ||
<tr><th align="right"><var>X'0020'</var></th><td>Use 1MB pages for CCATEMP in storage control blocks.</td></tr> | <tr><th align="right"><var>X'0020'</var></th><td>Use 1MB pages for CCATEMP in storage control blocks.</td></tr> | ||
<tr><th align="right"><var>X'0040'</var></th><td>Use 1MB pages for the record locking table when it resides above the bar.</td></tr> | <tr><th align="right"><var>X'0040'</var></th><td>Use 1MB pages for the record locking table when it resides above the bar.</td></tr> | ||
<tr><th align="right"><var> X'0080'</var></th><td>Use 1MB pages for CCAAPSY | |||
<tr><th align="right"><var> X'0080'</var></th><td>Use 1MB pages for CCAAPSY (APSY saved compilations in storage above the bar). From V7.6 onwards, this allocation will not include [[Performance monitoring and tuning#Resident Request feature for precompiled procedures|Resident Requests]] (RESREQST). </td></tr> | |||
</table> | </table> | ||
[[Category:System parameters]] | [[Category:System parameters]] | ||
[[Category:Parameters]] | [[Category:Parameters]] | ||
Revision as of 23:11, 14 July 2015
1 mb page areas
Summary
- Default value
- 0
- Parameter type
- System
- Where set
- On User 0's parameter line.
- Related products
- All
- Introduced
- Model 204 V7.4
Description
ZPAGEOPT is a User 0 parameter applicable to z/OS systems only.
ZPAGEOPT specifies the areas that should be allocated using 1MB pages.
The following settings are valid:
| Setting | Meaning |
|---|---|
| X'0001' | Use 1MB pages for servers above the bar. |
| X'0002' | Use 1MB pages for buffers above the bar. |
| X'0004' | Use 1MB pages for buffer hash cells above the bar. |
| X'0008' | Use 1MB pages for buffer control blocks above the bar. |
| X'0010' | Use 1MB pages for CCATEMP pages in storage above the bar. |
| X'0020' | Use 1MB pages for CCATEMP in storage control blocks. |
| X'0040' | Use 1MB pages for the record locking table when it resides above the bar. |
| X'0080' | Use 1MB pages for CCAAPSY (APSY saved compilations in storage above the bar). From V7.6 onwards, this allocation will not include Resident Requests (RESREQST). |