Freeze Properties

Synopsis

Freeze.DbEnv.env-name.DbCheckpointPeriod=num

Description

Every Berkeley DB environment created by Freeze has an associated thread that checkpoints this environment every num seconds. If num is less than 0, no checkpoint is performed. Defaults to 120 seconds.

Synopsis

Freeze.DbEnv.env-name.DbHome=db-home

Description

Defines the home directory of this Freeze database environment. Defaults to env-name.

Synopsis

Freeze.DbEnv.env-name.DbPrivate=num

Description

If num is set to a value larger than zero, Freeze instructs Berkeley DB to use process private memory instead of shared memory. The default value is 1. Set it to 0 in order to run db_archive (or another Berkeley DB utility) on a running environment.

Synopsis

Freeze.DbEnv.env-name.DbRecoverFatal=num

Description

If num is set to a value larger than zero, "fatal" recovery is performed when the environment is opened. The default value is 0.

Synopsis

Freeze.DbEnv.env-name.OldLogsAutoDelete=num

Description

If num is set to a value larger than zero, old transactional logs no longer in use are deleted after each periodic checkpoint (see Freeze.DbEnv.env-name.DbCheckpointPeriod). The default value is 1.

Synopsis

Freeze.DbEnv.env-name.PeriodicCheckpointMinSize=num

Description

num is the minimum size in kbytes for the periodic checkpoint (see Freeze.DbEnv.env-name.DbCheckpointPeriod). This value is passed to Berkeley DB's checkpoint function. Defaults to 0 (which means no minimum).

Synopsis

Freeze.Evictor.env-name.filename.MaxTxSize=num

Description

Freeze uses a background thread to save updates to the database. Transactions are used to save many facets together. num defines the maximum number of facets saved per transaction. Defaults to 10 * SaveSizeTrigger (see Freeze.Evictor.env-name.filename.SaveSizeTrigger); if this value is negative, the actual value is set to 100.

Synopsis

Freeze.Evictor.env-name.filename.SavePeriod=num

Description

Freeze uses a background thread to save updates to the database. After num milliseconds without saving, if there is any facet created, modified or destroyed, this background thread wakes up to save these facets. When num is 0, there is no periodic saving. Defaults to 60,000.

Synopsis

Freeze.Evictor.env-name.filename.SaveSizeTrigger=num

Description

Freeze uses a background thread to save updates to the database. When num is 0 or positive, as soon as num or more facets have been created, modified or destroyed, this background thread wakes up to save them. When num is negative, there is no size trigger. Defaults to 10.

Synopsis

Freeze.Evictor.env-name.filename.StreamTimeout=num

Description

When the saving thread saves an object, it needs to lock this object in order to get a consistent copy of the object's state. If the lock cannot be acquired within num seconds, a fatal error is generated. If a fatal error callback was registered by the appplication, this callback is called; otherwise the program is terminated immediately. When num is 0 or negative, there is no timeout. The default value is 0.

Synopsis

Freeze.Trace.DbEnv=num

Description

The Freeze database environment activity trace level:

Synopsis

Freeze.Trace.Evictor=num

Description

The Freeze evictor activity trace level:

Synopsis

Freeze.Trace.Map=num

Description

The Freeze map activity trace level:

Synopsis

Freeze.Warn.Deadlocks=num

Description

If num is set to a value larger than zero, Freeze logs a warning message when a deadlock occur. The default value is 0.

Synopsis

Freeze.Warn.CloseInFinalize=num

Description

If num is set to a value larger than zero, Freeze logs a warning message when an application neglects to explicitly close a map iterator. The default value is 1. (Java only)