IBM Tivoli Composite Application Manager for Application Diagnostics, Version 7.1.0.1

Dynamic Cache Templates attributes

The Dynamic Cache Templates attribute group provides information about the cache template data.

A cache template is an object type defined by a cache policy specified in the WAS cachespec.xml file. A cache policy specifies the cache rules indicating what will be cached, the invalidation, timeout conditions, and other data. The attributes within this group are used to build the Cache Analysis workspace.

For information about WebSphere PMI metrics, see WebSphere PMI Attribute Mapping.

Cache Instance Name

The cache instance name.

Cache Instance Type

The cache instance type.

Cache Miss Rate (per sec)

The rate (per second) of requests for this cacheable object type that were not found in the cache during the sampling interval. Format is decimal (formatted to 3 decimal places).

Cache Misses

The number of requests for this cacheable object type that were not found in the cache (in memory, on disk or on other cooperating caches); this would have caused the underlying servlet or command to be executed in order to obtain the results. Format is positive integer.

Cache Object Type

The name of the object type specified in the cache policy of the cache spec XML file. Alphanumeric string.

Client Request Rate

(per sec)

The request rate (per second) for this cacheable object type made by clients directly accessing this application server. Format is decimal (formatted to 3 decimal places).

Client Requests

The number of requests for this cacheable object type made by clients directly accessing this application server. Format is positive integer.

Cluster Request Rate

(per sec)

The request rate (per second) for this cacheable object type made by cooperating caches in this cluster. Format is decimal (formatted to 3 decimal places).

Cluster Requests

The number of requests for this cacheable object type made by cooperating caches in this cluster. Format is positive integer.

Current Cache Size

The current number of entries for this cacheable object type present in the dynamic cache. Format is positive integer.

Disk Hit Rate (per sec)

The rate (per second) of the requests for this cacheable object type served from disk during the sampling interval. Format is decimal (formatted to 3 decimal places).

Disk Hits

The number of requests for this cacheable object type that were served from disk; this is applicable only when the disk offload is turned on for the dynamic cache. Format is positive integer.

Explicit Disk Invalidations Rate (per sec)

The rate at which the entries of this cacheable object type were removed from disk due to explicit invalidations issued by the clients. Format is decimal (formatted to 3 decimal places).

Explicit Disk Invalidations

The number of entries of this cacheable object type that were removed from disk due to explicit invalidations issued by the clients (directly accessing the application server and by remote JVMs in the cluster). Format is positive integer.

Explicit Local Invalidation Rate (per sec)

The rate at which the explicit invalidations were received for this cacheable object type from clients accessing the application server directly, either programmatically or by a cache policy. Format is decimal (formatted to 3 decimal places).

Explicit Local Invalidations

The number of explicit invalidations received for this cacheable object type from clients accessing the application server directly, either programmatically or by a cache policy. Format is positive integer.

Explicit Memory Invalidation Rate (per sec)

The rate at which the entries of this cacheable object type were removed from memory due to explicit invalidations issued by the clients. Format is decimal (formatted to 3 decimal places).

Explicit Memory Invalidations

The number of entries of this cacheable object type that were removed from memory due to explicit invalidations issued by the clients (directly accessing the application server and by remote JVMs in the cluster). Format is positive integer.

Explicit Remote Invalidation Rate (per sec)

The rate at which explicit invalidations were received for this cacheable object type from cooperating JVMs in the cluster. Format is decimal (formatted to 3 decimal places).

Explicit Remote Invalidations

The number of explicit invalidations received for this cacheable object type from cooperating JVMs in the cluster. Format is positive integer.

Instrumentation Level

The PMI

instrumentation level set for collecting dynamic cache data. For WebSphere 6 or higher, the valid values are None, Basic, Extended, All, Custom. Blank if no instrumentation level is set.

Interval (sec)

The length (in seconds) of the sampling interval. Format is positive integer.

Least Recently Used Invalidation Rate (per sec)

The rate (per second) at which entries of this cacheable object type were evicted from memory by a least-recently-used algorithm. Format is decimal (formatted to 3 decimal places).

Least Recently Used Invalidations

The number of entries of this cacheable object type that were evicted from memory by a least-recently-used algorithm. This happens when the in-memory cache becomes full and subsequent requests for new entries have to be accommodated. The entries removed from memory are passivated to disk if disk overflow is enabled. If this number is high, consider increasing the in-memory cache size. Format is positive integer.

Memory Hit Rate (per sec)

The rate (per second) of the requests for this cacheable object type served from memory during the sampling interval. Format is decimal (formatted to 3 decimal places).

Memory Hits

The number of requests for this cacheable object type served from memory. Format is positive integer.

Node Name

The name of the system on which the server is running. Alphanumeric string.

Origin Node

The name of the server subnode. Alphanumeric string. Maximum 128 characters.

Remote Cache Entries Received

The number of entries received from cooperating dynamic caches in this cluster. Format is positive integer.

Remote Cache Entry Receive Rate

(per sec)

The rate (per second) of entries received from cooperating dynamic caches in this cluster for the sampling interval. Format is decimal (formatted to 3 decimal places).

Remote Hit Rate (per sec)

The rate (per second) of the requests for this cacheable object type served from other JVMs in the cluster during the sampling interval. Format is decimal (formatted to 3 decimal places).

Remote Hits

The requests for this cacheable object type served from other JVMs in the cluster. Format is positive integer.

Sample Date and Time

The date and time the Tivoli Enterprise Management Agent collected the data. The valid format is a 12-character timestamp. For the STR and SCAN functions, the format is MM/DD/YY HH:MM:SS; the following table shows the values contained in this character string:


Format of the 12-character timestamp

Character String Meaning
MM Month
DD Day
YY Year
HH Hour
MM Minute
SS Second

Example: 09/13/06 18:32:03 indicates the data was collected on September 13, 2006, at 18:32:03.

This attribute was designed for logging and reporting data-collection times rather than for creating situations. To specify a time and date for comparison and testing, use attributes from the Universal Time or Local Time groups.

Server Name

The name of the WebSphere application server. Alphanumeric string.

Set Instrumentation Level

Type

Indicates the WebSphere resource category, which is used by the agent to modify the Instrumentation Level for transaction data collection.

Summary of Cache Templates

Whether this row is a summary row of statistical totals collected for all the cache object types. The valid values are No and Yes.

Template Row Number

The number of the row in the report that displays in the workspace, which is associated with a bar in the Ten Worst Hits Rate bar chart. The valid format is an integer.

Timeout Invalidation Rate (per sec)

The rate (per second) at which entries are removed from the cache (memory or disk) because their timeout has expired. Format is decimal (formatted to 3 decimal places).

Timeout Invalidations

The number of entries of this cacheable object type that were removed from memory or disk because their timeout (as specified in the cache spec XMLfile) has expired. Format is positive integer.

Total Explicit Invalidation Rate (per sec)

The rate at which invalidations were issued for entries for this cacheable object type explicitly by the clients. Format is decimal (formatted to 3 decimal places).

Total Explicit Invalidations

The number of invalidations issued for entries of this cacheable object type explicitly by the clients (directly accessing the application server and by remote JVMs in this cluster). Format is positive integer.

Total Hit Rate (per sec)

The total hit rate per second. Format is decimal (formatted to 3 decimal places).

Additional information:


Parent topic:

Attributes for ITCAM Agent for WebSphere Applications