expExpressionDeltaInterval
EXPRESSION-MIB ·
.1.3.6.1.4.1.9.10.22.1.3.1.1.5
Object
column
r/w
seconds Integer32
Sampling interval for objects in this expression with
expObjectSampleType 'deltaValue'.
This object is not instantiated if not applicable.
A value of 0 indicates no automated sampling. In this case
the delta is the difference from the last time the
expression was evaluated. Note that this is subject to
unpredictable delta times in the face of retries or
multiple managers.
A value greater than zero is the number of seconds between
automated samples.
Until the delta interval has expired once the delta for the
object is effectively not instantiated and evaluating
the expression has results as if the object itself were not
instantiated.
Note that delta values potentially consume large amounts of
system CPU and memory. Delta state and processing must
continue constantly even if the expression is not being
used. That is, the expression is being evaluated every
delta interval, even if no application is reading those
values. For wildcarded objects this can be substantial
overhead.
Note that delta intervals, external expression value
sampling intervals and delta intervals for expressions
within other expressions can have unusual interactions as
they are impossible to synchronize accurately. In general
one interval embedded below another must be enough shorter
that the higher sample sees relatively smooth, predictable
behavior.
Context
- MIB
- EXPRESSION-MIB
- OID
.1.3.6.1.4.1.9.10.22.1.3.1.1.5- Type
- column
- Access
- readwrite
- Status
- current
- Units
- seconds
- Parent
- expExpressionEntry
- Table
- expExpressionTable
- Siblings
- 11
Syntax
seconds Integer32
Values & Constraints
Object Constraints
range: 0-86400
Related Objects
Sibling Objects
| Object | Type | Syntax | OID |
|---|---|---|---|
| expExpressionName The unique name of the expression, the same as expName.
Use this object to change the expression's name without
changing its expExpressionIndex. | column | ExpressionName | .1.3.6.1.4.1.9.10.22.1.3.1.1.1 |
| expExpressionError The error that occurred. In the following explanations the
expected timing of the error is in parentheses. 'S' means
the error occurs on a Set request. 'E' means the error
occu… | column | Enumeration | .1.3.6.1.4.1.9.10.22.1.3.1.1.10 |
| expExpressionInstance The expValueInstance being evaluated when the error
occurred. A zero-length indicates irrelevance.
This object is not instantiated if there have been no
errors. | column | ObjectIdentifier | .1.3.6.1.4.1.9.10.22.1.3.1.1.11 |
| expExpressionOwner The entity that configured this entry and is therefore
using the resources assigned to it. | column | OctetString | .1.3.6.1.4.1.9.10.22.1.3.1.1.12 |
| expExpression The expression to be evaluated. This object is the same
as a DisplayString (RFC 1903) except for its maximum length.
Except for the variable names the expression i… | column | OctetString | .1.3.6.1.4.1.9.10.22.1.3.1.1.2 |
| expExpressionValueType The type of the expression value. One and only one of
the value objects in expValueTable will be instantiated to
match this type.
If the result of the expression c… | column | Enumeration | .1.3.6.1.4.1.9.10.22.1.3.1.1.3 |
| expExpressionComment A comment to explain the use or meaning of the expression. | column | SNMPv2-TCDisplayString | .1.3.6.1.4.1.9.10.22.1.3.1.1.4 |
| expExpressionPrefix An object prefix to assist an application in determining
the instance indexing to use in expValueTable, relieving the
application of the need to scan the expObjectTable to
determi… | column | ObjectIdentifier | .1.3.6.1.4.1.9.10.22.1.3.1.1.6 |
| expExpressionErrors The number of errors encountered while evaluating this
expression.
Note that an object in the expression not being accessible
is not considered an error. It is a l… | column | SNMPv2-SMICounter32 | .1.3.6.1.4.1.9.10.22.1.3.1.1.7 |
| expExpressionErrorTime The value of sysUpTime the last time an error caused a
failure to evaluate this expression.
This object is not instantiated if there have been no
errors. | column | SNMPv2-TCTimeStamp | .1.3.6.1.4.1.9.10.22.1.3.1.1.8 |
| expExpressionErrorIndex The 1-based character index into expExpression for where
the error occurred. The value zero indicates irrelevance.
This object is not instantiated if there have be… | column | SNMPv2-SMIInteger32 | .1.3.6.1.4.1.9.10.22.1.3.1.1.9 |