PVT
The private storage (PVT) sampler scans all address spaces each report interval to determine if any are exceeding the utilization threshold for below-the-line or above-the-line private storage.
If so, a warning message is issued.
In addition to the two threshold values specified on the PVT sampler control statement, which applies to all address spaces, you can set thresholds for individual address spaces in BBPARM member $$PVT. For more information, see PVT.
The PVT sampler treats fragmented free space as allocated storage, which is the more conservative approach since. The fragmented free space is still potentially available for use but its use is limited by the assigned subpool, key, and by size.
BMC recommends using a reporting period of five minutes or more because this sampler can generate a relatively high amount of overhead.
Syntax
The parameters are defined as follows:
Parameter | Description |
|---|---|
int | is the length of the sample period in intervals; the default sample period is 5 minutes (ten intervals) BMC recommends setting an interval of at least 5 minutes (10 intervals). |
below | is the below-the-line percentage threshold A warning message is displayed if the amount of below-the-line allocated storage equals or exceeds this value. Valid values can be from 0 to 100. A value of 100 indicates that no checking is performed. The default value is 90. |
above | is the above-the-line percentage threshold A warning message is displayed if the amount of above-the-line allocated storage equals or exceeds this value. Valid values can be from 0 to 100. A value of 100 indicates that no checking is performed. The default value is 80. |
Example
A warning message is issued for all address spaces that have allocated 80 percent or more of the below-the-line private storage, or 50 percent or more of the above-the-line private storage, unless other threshold values were specified in BBPARM member $$PVT. The example sampler will execute once every five minutes.
PVT 10,80,50
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