com.sleepycat.db
Class LockStats

java.lang.Object
  com.sleepycat.db.LockStats

public class LockStats
extends Object

Lock statistics for a database environment.

Method Summary

int	getCurMaxId()
int	getHashLen() Maximum length of a lock hash bucket.
int	getId() The last allocated locker ID.
int	getLockersNowait() The number of requests to allocate or deallocate a locker for which the thread of control did not wait.
int	getLockersWait() The number of requests to allocate or deallocate a locker for which the thread of control waited.
int	getLockNowait() The number of lock requests not immediately available due to conflicts, for which the thread of control did not wait.
int	getLocksteals() The maximum number of locks stolen for an empty partition.
int	getLockTimeout() Lock timeout value.
int	getLockWait() The number of lock requests not immediately available due to conflicts, for which the thread of control waited.
int	getMaxHlocks() The maximum number of locks in any hash bucket at any one time.
int	getMaxHobjects() The maximum number of objects in any hash bucket at any one time.
int	getMaxLockers() The maximum number of lockers possible.
int	getMaxLocks() The maximum number of locks possible.
int	getMaxLsteals() The maximum number of lock steals for any one partition.
int	getMaxNlockers() The maximum number of lockers at any one time.
int	getMaxNlocks() The maximum number of locks at any one time.
int	getMaxNobjects() The maximum number of lock objects at any one time.
int	getMaxObjects() The maximum number of lock objects possible.
int	getMaxOsteals() The maximum number of object steals for any one partition.
int	getNobjects() The number of current lock objects.
int	getNumDeadlocks() The number of deadlocks.
int	getNumDowngrade() The total number of locks downgraded.
int	getNumLockers() The number of current lockers.
int	getNumLocks() The number of current locks.
int	getNumLockTimeouts() The number of lock requests that have timed out.
int	getNumModes() The number of lock modes.
int	getNumReleases() The total number of locks released.
int	getNumRequests() The total number of locks requested.
int	getNumTxnTimeouts() The number of transactions that have timed out.
int	getNumUpgrade() The total number of locks upgraded.
int	getObjectsteals() The maximum number of objects stolen for an empty partition.
int	getObjsNowait() The number of requests to allocate or deallocate an object for which the thread of control did not wait.
int	getObjsWait() The number of requests to allocate or deallocate an object for which the thread of control waited.
int	getPartitions() The number of lock table partitions.
int	getPartMaxNowait() The number of times that a thread of control was able to obtain any one lock partition mutex without waiting.
int	getPartMaxWait() The maximum number of times that a thread of control was forced to wait before obtaining any one lock partition mutex.
int	getPartNowait() The number of times that a thread of control was able to obtain a lock partition mutex without waiting.
int	getPartWait() The number of times that a thread of control was forced to wait before obtaining a lock partition mutex.
int	getRegionNowait() The number of times that a thread of control was able to obtain the region lock without waiting.
int	getRegionWait() The number of times that a thread of control was forced to wait before obtaining the region lock.
int	getRegSize() The size of the lock region.
int	getTxnTimeout() Transaction timeout value.
String	toString() For convenience, the LockStats class has a toString method that lists all the data fields.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

getId

public int getId()

The last allocated locker ID.

getCurMaxId

public int getCurMaxId()

getMaxLocks

public int getMaxLocks()

The maximum number of locks possible.

getMaxLockers

public int getMaxLockers()

The maximum number of lockers possible.

getMaxObjects

public int getMaxObjects()

The maximum number of lock objects possible.

getPartitions

public int getPartitions()

The number of lock table partitions.

getNumModes

public int getNumModes()

The number of lock modes.

getNumLockers

public int getNumLockers()

The number of current lockers.

getNumLocks

public int getNumLocks()

The number of current locks.

getMaxNlocks

public int getMaxNlocks()

The maximum number of locks at any one time. Note that if there is more than one partition, this is the sum of the maximum across all partitions.

getMaxHlocks

public int getMaxHlocks()

The maximum number of locks in any hash bucket at any one time.

getLocksteals

public int getLocksteals()

The maximum number of locks stolen for an empty partition.

getMaxLsteals

public int getMaxLsteals()

The maximum number of lock steals for any one partition.

getMaxNlockers

public int getMaxNlockers()

The maximum number of lockers at any one time.

getNobjects

public int getNobjects()

The number of current lock objects.

getMaxNobjects

public int getMaxNobjects()

The maximum number of lock objects at any one time. Note that if there is more than one partition this is the sum of the maximum across all partitions.

getMaxHobjects

public int getMaxHobjects()

The maximum number of objects in any hash bucket at any one time.

getObjectsteals

public int getObjectsteals()

The maximum number of objects stolen for an empty partition.

getMaxOsteals

public int getMaxOsteals()

The maximum number of object steals for any one partition.

getNumRequests

public int getNumRequests()

The total number of locks requested.

getNumReleases

public int getNumReleases()

The total number of locks released.

getNumUpgrade

public int getNumUpgrade()

The total number of locks upgraded.

getNumDowngrade

public int getNumDowngrade()

The total number of locks downgraded.

getLockWait

public int getLockWait()

The number of lock requests not immediately available due to conflicts, for which the thread of control waited.

getLockNowait

public int getLockNowait()

The number of lock requests not immediately available due to conflicts, for which the thread of control did not wait.

getNumDeadlocks

public int getNumDeadlocks()

The number of deadlocks.

getLockTimeout

public int getLockTimeout()

Lock timeout value.

getNumLockTimeouts

public int getNumLockTimeouts()

The number of lock requests that have timed out.

getTxnTimeout

public int getTxnTimeout()

Transaction timeout value.

getNumTxnTimeouts

public int getNumTxnTimeouts()

The number of transactions that have timed out. This value is also a component of st_ndeadlocks, the total number of deadlocks detected.

getPartWait

public int getPartWait()

The number of times that a thread of control was forced to wait before obtaining a lock partition mutex.

getPartNowait

public int getPartNowait()

The number of times that a thread of control was able to obtain a lock partition mutex without waiting.

getPartMaxWait

public int getPartMaxWait()

The maximum number of times that a thread of control was forced to wait before obtaining any one lock partition mutex.

getPartMaxNowait

public int getPartMaxNowait()

The number of times that a thread of control was able to obtain any one lock partition mutex without waiting.

getObjsWait

public int getObjsWait()

The number of requests to allocate or deallocate an object for which the thread of control waited.

getObjsNowait

public int getObjsNowait()

The number of requests to allocate or deallocate an object for which the thread of control did not wait.

getLockersWait

public int getLockersWait()

The number of requests to allocate or deallocate a locker for which the thread of control waited.

getLockersNowait

public int getLockersNowait()

The number of requests to allocate or deallocate a locker for which the thread of control did not wait.

getRegionWait

public int getRegionWait()

The number of times that a thread of control was forced to wait before obtaining the region lock.

getRegionNowait

public int getRegionNowait()

The number of times that a thread of control was able to obtain the region lock without waiting.

getHashLen

public int getHashLen()

Maximum length of a lock hash bucket.

getRegSize

public int getRegSize()

The size of the lock region.

toString

public String toString()

For convenience, the LockStats class has a toString method that lists all the data fields.

Overrides:

toString in class Object