Package 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

    Modifier and Type
    Method
    Description
    int
    getCurMaxId()
    The current maximum unused locker ID.
    int
    getHashLen()
    Maximum length of a lock hash bucket.
    int
    getId()
    The last allocated locker ID.
    int
    getInitlockers()
    The initial number of lockers allocated in lock table.
    int
    getInitlocks()
    The initial number of locks allocated in the lock table.
    int
    getInitobjects()
    The initial number of lock objects allocated in lock table.
    int
    getLockers()
    The current number of lockers allocated in lock table.
    long
    getLockersNowait()
    The number of requests to allocate or deallocate a locker for which the thread of control did not wait.
    long
    getLockersWait()
    The number of requests to allocate or deallocate a locker for which the thread of control waited.
    long
    getLockNowait()
    The number of lock requests not immediately available due to conflicts, for which the thread of control did not wait.
    int
    getLocks()
    The current number of locks allocated in lock table.
    long
    getLocksteals()
    The maximum number of locks stolen by an empty partition.
    int
    getLockTimeout()
    Lock timeout value.
    long
    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.
    long
    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.
    long
    getMaxOsteals()
    The maximum number of object steals for any one partition.
    int
    getNobjects()
    The number of current lock objects.
    long
    getNumDeadlocks()
    The number of deadlocks.
    long
    getNumDowngrade()
    The total number of locks downgraded.
    int
    getNumLockers()
    The number of current lockers.
    int
    getNumLocks()
    The number of current locks.
    long
    getNumLockTimeouts()
    The number of lock requests that have timed out.
    int
    getNumModes()
    The number of lock modes.
    long
    getNumReleases()
    The total number of locks released.
    long
    getNumRequests()
    The total number of locks requested.
    long
    getNumTxnTimeouts()
    The number of transactions that have timed out.
    long
    getNumUpgrade()
    The total number of locks upgraded.
    int
    getObjects()
    The current number of lock objects allocated in lock table.
    long
    getObjectsteals()
    The maximum number of objects stolen by an empty partition.
    long
    getObjsNowait()
    The number of requests to allocate or deallocate an object for which the thread of control did not wait.
    long
    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.
    long
    getPartMaxNowait()
    The number of times that a thread of control was able to obtain any one lock partition mutex without waiting.
    long
    getPartMaxWait()
    The maximum number of times that a thread of control was forced to wait before obtaining any one lock partition mutex.
    long
    getPartNowait()
    The number of times that a thread of control was able to obtain a lock partition mutex without waiting.
    long
    getPartWait()
    The number of times that a thread of control was forced to wait before obtaining a lock partition mutex.
    long
    getRegionNowait()
    The number of times that a thread of control was able to obtain the region lock without waiting.
    long
    getRegionWait()
    The number of times that a thread of control was forced to wait before obtaining the region lock.
    long
    getRegSize()
    The size of the lock region.
    int
    getTableSize()
    The size of object hash table.
    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 Details

    • getId

      public int getId()
      The last allocated locker ID.

    • getCurMaxId

      public int getCurMaxId()
      The current maximum unused locker ID.

    • getInitlocks

      public int getInitlocks()
      The initial number of locks allocated in the lock table.

    • getInitlockers

      public int getInitlockers()
      The initial number of lockers allocated in lock table.

    • getInitobjects

      public int getInitobjects()
      The initial number of lock objects allocated in lock table.

    • getLocks

      public int getLocks()
      The current number of locks allocated in lock table.

    • getLockers

      public int getLockers()
      The current number of lockers allocated in lock table.

    • getObjects

      public int getObjects()
      The current number of lock objects allocated in lock table.

    • 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.

    • getTableSize

      public int getTableSize()
      The size of object hash table.

    • 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 long getLocksteals()
      The maximum number of locks stolen by an empty partition.

    • getMaxLsteals

      public long 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 long getObjectsteals()
      The maximum number of objects stolen by an empty partition.

    • getMaxOsteals

      public long getMaxOsteals()
      The maximum number of object steals for any one partition.

    • getNumRequests

      public long getNumRequests()
      The total number of locks requested.

    • getNumReleases

      public long getNumReleases()
      The total number of locks released.

    • getNumUpgrade

      public long getNumUpgrade()
      The total number of locks upgraded.

    • getNumDowngrade

      public long getNumDowngrade()
      The total number of locks downgraded.

    • getLockWait

      public long getLockWait()
      The number of lock requests not immediately available due to conflicts, for which the thread of control waited.

    • getLockNowait

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

    • getNumDeadlocks

      public long getNumDeadlocks()
      The number of deadlocks.

    • getLockTimeout

      public int getLockTimeout()
      Lock timeout value.

    • getNumLockTimeouts

      public long getNumLockTimeouts()
      The number of lock requests that have timed out.

    • getTxnTimeout

      public int getTxnTimeout()
      Transaction timeout value.

    • getNumTxnTimeouts

      public long 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 long getPartWait()
      The number of times that a thread of control was forced to wait before obtaining a lock partition mutex.

    • getPartNowait

      public long getPartNowait()
      The number of times that a thread of control was able to obtain a lock partition mutex without waiting.

    • getPartMaxWait

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

    • getPartMaxNowait

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

    • getObjsWait

      public long getObjsWait()
      The number of requests to allocate or deallocate an object for which the thread of control waited.

    • getObjsNowait

      public long getObjsNowait()
      The number of requests to allocate or deallocate an object for which the thread of control did not wait.

    • getLockersWait

      public long getLockersWait()
      The number of requests to allocate or deallocate a locker for which the thread of control waited.

    • getLockersNowait

      public long getLockersNowait()
      The number of requests to allocate or deallocate a locker for which the thread of control did not wait.

    • getRegionWait

      public long getRegionWait()
      The number of times that a thread of control was forced to wait before obtaining the region lock.

    • getRegionNowait

      public long 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 long 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