Examples of StatGroup

com.sleepycat.je.utilint.StatGroup
The Stats infrastructure provides context for JE statistics. Each statistic has these attributes: - metadata - specifically, a name and description - each statistic is associated with a parent stat group, which itself has a name and description. - support for the StatsConfig.clear semantics - a way to print statistics in a user friendly way. To create a statistic variable, instantiate one of the concrete subclasses of Stat. Each concrete subclass should hold the methods that are needed to best set and display the value. For example, instead of using LongStat to hold a timestamp or LSN value, use TimestampStat or LSNStat. A Stat instance needs to specify a StatDefinition. There may be multiple Stat variables in different components that share a StatDefinition. They are differentiated when displayed by their parent StatGroup. Each Stat instance is associated with a StatGroup, which holds the collection of stats that belong to a given component. Each member of the StatGroup has a unique StatDefinition. StatGroups can be combined, in order to accumulate values. For example, the LockManager may have multiple lock tables. Each lock table keeps its own latch statistics. When LockStats are generated, the StatsGroup for each latch is collected and rolled up into a single StatGroup, using the addAll(StatGroup) method. The Stats infrastructure is for internal use only. Public API classes like EnvironmentStats, LockStats, etc, contain StatGroups. A call to retrieve stats is implementing by getting a clone of the StatGroups held by the components like the cleaner, the incompressor, the LockManager, etc. The public API classes provide getter methods that reach into the StatGroups to return the specific stat value. To add a statistic, create the Stat variable in the component where it is being used and associate it with a StatGroup. The Stat infrastruture does the rest of the work for plumbing that statistic up to the public API class. Each API class must provide a getter method to access the specific statistic. Currenly, this is done manually.

Examples of com.sleepycat.je.utilint.StatGroup

     * @param map the actual map instance.
     */
    public SizeAwaitMap(Map<K, V> map) {
        thresholdLatches = new HashMap<Integer,ThresholdLatch>();
        this.map = map;
        stats = new StatGroup(SizeAwaitMapStatDefinition.GROUP_NAME,
                              SizeAwaitMapStatDefinition.GROUP_DESC);
        nNoWaits = new LongStat(stats, N_NO_WAITS);
        nRealWaits = new LongStat(stats, N_REAL_WAITS);
        nWaitTime = new LongStat(stats, N_WAIT_TIME);
    }

View Full Code Here

Examples of com.sleepycat.je.utilint.StatGroup

    /**
     * stats
     */
    @Override
    public StatGroup collectStats() {
        StatGroup stats =
            new StatGroup("Transaction lock counts" ,
                          "Read and write locks held by transaction " + id);


        IntStat statReadLocks = new IntStat(stats, LOCK_READ_LOCKS);
        IntStat statWriteLocks = new IntStat(stats, LOCK_WRITE_LOCKS);
        IntStat statTotalLocks = new IntStat(stats, LOCK_TOTAL);

View Full Code Here

Examples of com.sleepycat.je.utilint.StatGroup

        this.dbEnvHome = dbEnvHome;
        this.readOnly = readOnly;


        boolean success = false;


        stats = new StatGroup(LogStatDefinition.FILEMGR_GROUP_NAME,
                              LogStatDefinition.FILEMGR_GROUP_DESC);
        nRandomReads = new LongStat(stats, FILEMGR_RANDOM_READS);
        nRandomWrites = new LongStat(stats, FILEMGR_RANDOM_WRITES);
        nSequentialReads = new LongStat(stats, FILEMGR_SEQUENTIAL_READS);
        nSequentialWrites = new LongStat(stats, FILEMGR_SEQUENTIAL_WRITES);

View Full Code Here

Examples of com.sleepycat.je.utilint.StatGroup

        return syncManager.getNTimeouts();
    }


    StatGroup loadStats(StatsConfig config) {
        nOpenFiles.set(fileCache.size());
        StatGroup copyStats = stats.cloneGroup(config.getClear());
        copyStats.addAll(syncManager.loadStats(config));


        return copyStats;
    }

View Full Code Here

Examples of com.sleepycat.je.utilint.StatGroup

            (EnvironmentParams.COMPRESSOR_LOCK_TIMEOUT);
        binRefQueue = new HashMap<Long, BINReference>();
        binRefQueueSync = new Object();
 
        /* Do the stats definitions. */
        stats = new StatGroup(GROUP_NAME, GROUP_DESC);
        splitBins = new LongStat(stats, INCOMP_SPLIT_BINS);
        dbClosedBins = new LongStat(stats, INCOMP_DBCLOSED_BINS);
        cursorsBins = new LongStat(stats, INCOMP_CURSORS_BINS);
        nonEmptyBins = new LongStat(stats, INCOMP_NON_EMPTY_BINS);
        processedBins = new LongStat(stats, INCOMP_PROCESSED_BINS);

View Full Code Here

Examples of com.sleepycat.je.utilint.StatGroup


        fsyncLatch = new Latch("fsyncLatch");
        fsyncInProgress = false;
        nextFSyncWaiters = new FSyncGroup(timeout, envImpl);


        stats = new StatGroup(LogStatDefinition.FSYNCMGR_GROUP_NAME,
                              LogStatDefinition.FSYNCMGR_GROUP_DESC);
        nFSyncRequests = new LongStat(stats, FSYNCMGR_FSYNC_REQUESTS);
        nFSyncs = new LongStat(stats, FSYNCMGR_FSYNCS);
        nTimeouts = new LongStat(stats, FSYNCMGR_FSYNC_TIMEOUTS);
    }

View Full Code Here

Examples of com.sleepycat.je.utilint.StatGroup

            } finally {
                cursor.close();
            }
        }


        StatGroup stats = new StatGroup(SequenceStatDefinition.GROUP_NAME,
                                        SequenceStatDefinition.GROUP_DESC);
        new IntStat(stats, SEQUENCE_GETS, nGets);
        new IntStat(stats, SEQUENCE_CACHED_GETS, nCachedGets);
        new IntStat(stats, SEQUENCE_CACHE_SIZE, cacheSize);
        new LongStat(stats, SEQUENCE_STORED_VALUE, storedValue);

View Full Code Here

Examples of com.sleepycat.je.utilint.StatGroup


    private StatGroup dbImplStats;
    private StatGroup treeStats;


    public BtreeStats() {
        dbImplStats = new StatGroup(GROUP_NAME, GROUP_DESC);
        treeStats = new StatGroup(GROUP_NAME, GROUP_DESC);
    }

View Full Code Here

Examples of com.sleepycat.je.utilint.StatGroup

    /**
     * Return stats for the multiple INLists covered by this evictor.
     */
    @Override
    StatGroup getINListStats(StatsConfig config) {
        StatGroup totalINListStats = new StatGroup("temp", "temp");
        if (config.getFast()) {


            /* 
             * This is a slow stat for shared envs, because of the need to
             * synchronize.
             */
            return totalINListStats;
        }


        List<Subject> copy = null;
        synchronized(this) {
            copy = new ArrayList<Subject>(subjects);
        }


        for (Subject s: copy) {
            totalINListStats.addAll(s.env.getInMemoryINs().loadStats());
        }


        return totalINListStats;
    }

View Full Code Here

Examples of com.sleepycat.je.utilint.StatGroup


        DbConfigManager configManager = envImpl.getConfigManager();
        evictBytesSetting = configManager.getLong
            (EnvironmentParams.EVICTOR_EVICT_BYTES);


        stats = new StatGroup(GROUP_NAME, GROUP_DESC);
        requiredEvictBytesStat = new LongStat(stats, 
                                              EVICTOR_REQUIRED_EVICT_BYTES);


        memBudgetTotals = envImpl.getMemoryBudget().getTotals();
    }

View Full Code Here

0 1 2 3 4 5

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.