CPPAGTHR parameter: Difference between revisions
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{{Template:CPPAGTHR parameter subtitle}} | {{Template:CPPAGTHR parameter subtitle}} | ||
==Summary== | ==Summary== | ||
<dl> | <dl> | ||
<dt>Default value | <dt>Default value | ||
<dd> | <dd>0 | ||
<dt>Parameter type | <dt>Parameter type | ||
<dd>System | <dd>System | ||
| Line 11: | Line 9: | ||
<dd>System manager | <dd>System manager | ||
<dt>Related products | <dt>Related products | ||
<dd>All | <dd>All | ||
<dt>Introduced | <dt>Introduced | ||
<dd><var class="product">Model 204</var> version 7. | <dd><var class="product">Model 204</var> version 7.9 | ||
</dl> | </dl> | ||
==Description== | ==Description== | ||
<p><i>CheckPoint PAGe THReshold.</i></p> | |||
<p>The new fullword CPPAGTHR parameter can be set to force a checkpoint | |||
when the number of pages written to the current stream hits the | |||
threshold.</p> | |||
<p>If the threshold is small and it's hit while the checkpoint PST is | |||
writing out subtran checkpoint data, the threshold is ignored. If | |||
the checkpoint fails (must be non-subtran) it is not retried. </p> | |||
<p>If the parameter is reset below the number of pages written to the | |||
current checkpoint stream, a checkpoint is immediately forced.</p> | |||
<p>The default for CPPAGTHR is 0, meaning that it is not in use.</p> | |||
[[Category:Parameters]] | [[Category:Parameters]] | ||
[[Category:System parameters]] | [[Category:System parameters]] | ||
Latest revision as of 13:45, 3 June 2025
Page write threshold for checkpoints
Summary
- Default value
- 0
- Parameter type
- System
- Where set
- System manager
- Related products
- All
- Introduced
- Model 204 version 7.9
Description
CheckPoint PAGe THReshold.
The new fullword CPPAGTHR parameter can be set to force a checkpoint when the number of pages written to the current stream hits the threshold.
If the threshold is small and it's hit while the checkpoint PST is writing out subtran checkpoint data, the threshold is ignored. If the checkpoint fails (must be non-subtran) it is not retried.
If the parameter is reset below the number of pages written to the current checkpoint stream, a checkpoint is immediately forced.
The default for CPPAGTHR is 0, meaning that it is not in use.