ZHPF command: Difference between revisions
Jump to navigation
Jump to search
m (minor formatting) |
|||
| (4 intermediate revisions by 2 users not shown) | |||
| Line 4: | Line 4: | ||
<dd>System manager | <dd>System manager | ||
<dt>Function | <dt>Function | ||
<dd>Checks zHPF availability for | <dd>Checks zHPF availability for file data sets</dl> | ||
==Syntax== | ==Syntax== | ||
<p class="syntax">ZHPF </p> | <p class="syntax">ZHPF [<span class="term">filename</span> | *]</p> | ||
<p> | |||
Where:</p> | |||
<ul> | |||
<li><var class="term">filename</var> specifies a single local file </li> | |||
<li>* indicates all local files opened by all users </li> | |||
</ul> | |||
<p class="note"><b>Note:</b> <var class="term">filename</var> and * are available as of Model 204 7.7.</p> | |||
If neither <var class="term">filename</var> nor * is specified, <var>ZHPF</var> prints zHPF-related information for all data sets for the file currently opened by the user. | |||
<var>ZHPF</var> displays the following message for each data set in the file to indicate whether [[Performance monitoring and tuning#High Performance FICON (zHPF)|zHPF type I/O]] can be used for the data set: | <var>ZHPF</var> displays the following message for each data set in the file(s) to indicate whether [[Performance monitoring and tuning#High Performance FICON (zHPF)|zHPF type I/O]] can be used for the data set: | ||
<p class="code">M204.2953: File <var class="term">filename</var> <var class="term">dataset_name</var> zHPF capabilities <var class="term">hex_values</var> Supported: - <var class="term">indicator</var></p> | <p class="code">M204.2953: File <var class="term">filename</var> <var class="term">dataset_name</var> zHPF capabilities <var class="term">hex_values</var> Supported: - <var class="term">indicator</var></p> | ||
<p> | |||
Where:</p> | |||
<ul> | |||
<li><var class="term">hex_values</var> represent the existing zHPF capabilities </li> | |||
<li><var class="term">indicator</var> has one of the following values: | |||
<table class="thJustBold"> | |||
<var class="term">indicator</var> has one of the following values: | |||
<table> | |||
<tr class="head"> | <tr class="head"> | ||
<th>Value</th> <th>Meaning</th> | <th>Value</th> <th>Meaning</th> | ||
</tr> | </tr> | ||
<tr>< | <tr><th>YES</th> | ||
<tr>< | <td>zHPF is supported for <var class="term">dataset_name</var> in <var class="term">filename</var>.</td></tr> | ||
<tr>< | |||
</table> | <tr><th>NO</th> | ||
<td>Hardware or z/OS support for zHPF functionality is insufficient (for example when z/OS runs under VM).</td></tr> | |||
<tr><th>N/A</th> | |||
<td>zHPF support is not available at all at the z/OS or hardware level.</td></tr> | |||
</table></li> | |||
</ul> | |||
==Usage notes== | ==Usage notes== | ||
<p>ZHPF is available as of Model 204 | <p> | ||
<var>ZHPF</var> is available as of Model 204 version 7.6.</p> | |||
[[Category: System manager commands]] | [[Category: System manager commands]] | ||
[[Category:Commands]] | [[Category:Commands]] | ||
Latest revision as of 20:07, 17 May 2016
Summary
- Privileges
- System manager
- Function
- Checks zHPF availability for file data sets
Syntax
ZHPF [filename | *]
Where:
- filename specifies a single local file
- * indicates all local files opened by all users
Note: filename and * are available as of Model 204 7.7.
If neither filename nor * is specified, ZHPF prints zHPF-related information for all data sets for the file currently opened by the user.
ZHPF displays the following message for each data set in the file(s) to indicate whether zHPF type I/O can be used for the data set:
M204.2953: File filename dataset_name zHPF capabilities hex_values Supported: - indicator
Where:
- hex_values represent the existing zHPF capabilities
- indicator has one of the following values:
Value Meaning YES zHPF is supported for dataset_name in filename. NO Hardware or z/OS support for zHPF functionality is insufficient (for example when z/OS runs under VM). N/A zHPF support is not available at all at the z/OS or hardware level.
Usage notes
ZHPF is available as of Model 204 version 7.6.