Oracle® Fusion Middleware Man Page Reference for Oracle Directory Server Enterprise Edition 11g Release 1 (11.1.1.7.0) Part Number E28967-01 |
|
|
PDF · Mobi · ePub |
Specify soft and hard thresholds for heap memory use
Description
PROPERTY | VALUE |
---|---|
Entry DN |
|
Valid Range |
Range depends on the deployment. The value is checked against the run-time values. |
Default Value |
Not set by default. |
Syntax |
Integer |
These attributes specify threshold values for dynamic memory footprint. When the memory threshold is reached, Directory Server attempts to free memory from the entry caches, and limit memory use.
When ds-maxheaplow
is reached, Directory Server attempts to free memory concurrently with other operations.
When ds-maxheaphigh
is reached, Directory Server prevents operations on the cache while memory is freed.
These attributes safeguard against sudden increases of memory footprint due to changes in allocation patterns. As such, the memory thresholds should be higher than the sum of all entry caches, plus the memory footprint at startup.
ds-maxheaphigh
and ds-maxheaplow
must be configured in conjunction with each other, as follows.
If ds-maxheaphigh
is zero or is not set, ds-maxheaplow
is ignored.
If ds-maxheaphigh
is set, its value must be at least one gigabyte.
If ds-maxheaphigh
is set, the value of ds-maxheaplow
must be less than that of ds-maxheaphigh
.
If ds-maxheaphigh
is set to a value other than zero, ds-maxheaplow
is automatically set by default to 7/8 of the value of ds-maxheaphigh
.
If ds-maxheaphigh
and ds-maxheaplow
are both set to a value other than zero, ds-maxheaplow
must be greater than or equal to (ds-maxheaphigh + minheap)/2
, where minheap
is the twice of the memory required during startup. If this condition is not met, ds-maxheaplow
is automatically set by default to 7/8 of the value of ds-maxheaphigh
.
The number of times the memory thresholds have been exceeded can be monitored by using the heapmaxhighhits
and heapmaxlowhits
attributes.
Attributes
See attributes
(5) for descriptions of the following attributes:
ATTRIBUTE TYPE | ATTRIBUTE VALUE |
---|---|
Availability |
SUNWdsee7 |
Stability Level |
Obsolete: Scheduled for removal after this release |
See Also