Examples of com.sleepycat.je.EnvironmentStats

com.sleepycat.je.EnvironmentStats
Statistics for a single environment.
The statistics are logically grouped into several categories. Viewing the statistics through {@link EnvironmentStats#toString()} displays the valuesin these categories, as does viewing the stats through the {@link JEMonitor mbean}. Viewing the stats with {@link EnvironmentStats#toStringVerbose()} willprovide more detailed descriptions of the stats and stat categories.
The current categories are:
- IO: Log file opens, reads, writes, cache misses.
- Cache: Data, keys, internal btree nodes, locks and JE metadata reside in the cache. If the cache is too full, nodes, data and keys are periodically evicted to stay within the defined cache size.
- Log Cleaning: Maintenance of JE's append only storage system. See this overview of the logging system. Log files are removed as their contents become obsolete.
- Node Compression: Internal btree nodes are compressed and removed when their contents become sparse.
- Checkpoints: The frequency and extent of checkpointing activity.
- Environment: Miscellaneous environment wide statistics.
- Locks: Number of locking operations, contention on lock table.
@see Viewing Statistics with JConsole

     * Retrieve and return stat information.
     */
    public synchronized EnvironmentStats loadStats(StatsConfig config)
        throws DatabaseException {


        EnvironmentStats envStats = new EnvironmentStats();


        envStats.setINCompStats(inCompressor.loadStats(config));
        envStats.setCkptStats(checkpointer.loadStats(config));
        envStats.setCleanerStats(cleaner.loadStats(config));
        envStats.setLogStats(logManager.loadStats(config));
        envStats.setMBAndEvictorStats(memoryBudget.loadStats(),
                                      evictor.loadStats(config));
        envStats.setLockStats(txnManager.loadStats(config));
        envStats.setEnvImplStats(loadEnvImplStats(config));


        return envStats;
    }

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                out.println("*** " + status);
                return;
            }


            if (i % 10000 == 0) {
                EnvironmentStats stats = env.getStats(null);
                if (stats.getNNodesScanned() > 0) {
                    out.println("*** Ran out of cache memory at record " + i +
                                " -- try increasing the Java heap size ***");
                    return;
                }
                out.print(".");

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        throws DatabaseException {


        out.println();
        out.println(msg + ':');


        EnvironmentStats stats = env.getStats(null);


        out.println("CacheSize=" +
                    INT_FORMAT.format(stats.getCacheTotalBytes()) +
                    " BtreeSize=" +
                    INT_FORMAT.format(stats.getCacheDataBytes()));


        if (stats.getNNodesScanned() > 0) {
            out.println("*** All records did not fit in the cache ***");
        }
    }

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     * Retrieve and return stat information.
     */
    synchronized public EnvironmentStats loadStats(StatsConfig config)
        throws DatabaseException {


        EnvironmentStats stats = new EnvironmentStats();
        inCompressor.loadStats(config, stats);
        evictor.loadStats(config, stats);
        checkpointer.loadStats(config, stats);
        cleaner.loadStats(config, stats);
        logManager.loadStats(config, stats);

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            while (true) {
                try {
                    synchronized (this) {
                        wait(30 * 1000);
                    }
                    EnvironmentStats stats = env.getStats(clearConfig);
                    System.out.println("\n" + stats + "\n");
                } catch (DatabaseException e) {
                    e.printStackTrace();
                    break;
                } catch (InterruptedException e) {

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                if (dataSize < 0) {
                    DbInternal.getCursorImpl(cursor).evict();
                }


                if (i % 10000 == 0) {
                    final EnvironmentStats stats = env.getStats(null);
                    if (stats.getNNodesScanned() > 0) {
                        out.println("*** Ran out of cache memory at record " +
                                    i +
                                    " -- try increasing Java heap size ***");
                        return;
                    }

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        throws Exception {


        out.println();
        out.println(msg + ':');


        final EnvironmentStats stats = env.getStats(null);
        final long btreeSize = DbInternal.getEnvironmentImpl(env).
            getMemoryBudget().getTreeMemoryUsage();


        out.println("CacheSize=" +
                    INT_FORMAT.format(stats.getCacheTotalBytes()) +
                    " BtreeSize=" + INT_FORMAT.format(btreeSize)  +
                    " NCacheMiss=" + INT_FORMAT.format(stats.getNCacheMiss()));


        if (stats.getNNodesScanned() > 0) {
            out.println("*** All records did not fit in the cache ***");
        }
    }

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   *         returned to the client if the corresponding monitor entry is
   *         requested.
   */
  public ArrayList<Attribute> getMonitorData()
  {
    EnvironmentStats environmentStats = null;
    TransactionStats transactionStats = null;
    StatsConfig statsConfig = new StatsConfig();


    try
    {

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      try
      {
        Runtime runtime = Runtime.getRuntime();
        long freeMemory = runtime.freeMemory() / bytesPerMegabyte;


        EnvironmentStats envStats =
            rootContainer.getEnvironmentStats(new StatsConfig());
        long nCacheMiss =
             envStats.getNCacheMiss() - prevEnvStats.getNCacheMiss();


        float cacheMissRate = 0;
        if (deltaCount > 0)
        {
          cacheMissRate = nCacheMiss/(float)deltaCount;

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Related Classes of com.sleepycat.je.EnvironmentStats

com.sleepycat.je.cleaner.CleanerTest

com.sleepycat.je.dbi.EnvironmentImpl

com.sleepycat.je.evictor.EvictSelectionTest

com.sleepycat.je.log.IOExceptionTest

com.sleepycat.je.log.LogManagerTest

com.sleepycat.je.recovery.CheckpointActivationTest

com.sleepycat.je.recovery.RecoveryCheckpointTest

com.sleepycat.je.txn.TxnEndTest

com.sleepycat.je.util.DbCacheSize

com.sleepycat.je.util.DbRunAction$StatsPrinter

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