Berkeley Java DB cache sizing

We're using JE 4.1.6 DPL. I set my environment max cache size using:

     EnvironmentConfig envConfig = new EnvironmentConfig();
      envConfig.setCache开发者_高级运维Size(cacheSize);
      StoreConfig storeConfig = new StoreConfig();

      envConfig.setAllowCreate(true);
      storeConfig.setAllowCreate(true);
      envConfig.setReadOnly(false);
      storeConfig.setReadOnly(false);
      envmntW = new Environment(rootDir, envConfig);

cacheSize =1000000000

After running for awhile I find that my cache grows beyond this setting

    StatsConfig statCfg = StatsConfig.DEFAULT;
    statCfg.setFast(true);
    cacheSize=envmntW.getStats(statCfg).getCacheTotalBytes();

How can this be?

Thanks Chuck

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I just noticed that this question had gone unanswered.

What do you get back from the getStats call?

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