NLRUQG parameter: Difference between revisions

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m (→‎Description: add formula for min NUMBUFG)
m (emphasize NUMBUFG)
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The number of above-the-bar [[Performance monitoring and tuning#Anticipatory writes|LRU queues]] to allocate.
The number of above-the-bar [[Performance monitoring and tuning#Anticipatory writes|LRU queues]] to allocate.


<var>NLRUQG</var> is used as a multiplier to determine the minimum number of ATB disk buffers used in an Online:  
<var>NLRUQG</var> is used as a multiplier to determine the minimum number (<var>[[NUMBUFG parameter|NUMBUFG]]</var> value) of ATB disk buffers used in an Online:  
<p class="code"><var>[[NUMBUFG parameter|NUMBUFG]]</var> >= NLRUQG * ((<var>[[NSERVS parameter|NSERVS]]</var> + <var>[[NSUBTKS parameter|NSUBTKS]]</var>) * <var>[[MAXOBUF parameter|MAXOBUF]]</var> + 15)
<p class="code"><var>NUMBUFG</var> >= NLRUQG * ((<var>[[NSERVS parameter|NSERVS]]</var> + <var>[[NSUBTKS parameter|NSUBTKS]]</var>) * <var>[[MAXOBUF parameter|MAXOBUF]]</var> + 15)
</p>
</p>



Revision as of 15:37, 26 August 2016

# of above-the-bar DKBM LRU queues

Summary

Default value
1, also the minimum
Parameter type
System
Where set
Not resettable
Related products
All
Introduced
Model 204 V7.1

Description

The number of above-the-bar LRU queues to allocate.

NLRUQG is used as a multiplier to determine the minimum number (NUMBUFG value) of ATB disk buffers used in an Online:

NUMBUFG >= NLRUQG * ((NSERVS + NSUBTKS) * MAXOBUF + 15)

See also