title: Android app reason of large RAM usage and how to reduce
body: <p>When I launch and exit my app several times its <code>RAM</code> usage increases reaching over 500 mb. When I checked memory dump using <code>adb shell dumpsys meminfo</code>  I checked unknown <code>pss value</code> is cause of problem. What is reason of large pss value and how I can reduce pss value.</p>
  
  <pre><code>Shared  Private     Heap     Heap     Heap
  
                     Pss    Dirty    Dirty     Size    Alloc     Free
  
                  ------   ------   ------   ------   ------   ------
  
         Native        0        0        0   534460   531827     1604
         Dalvik    51013    17868    50664    90480    82266     8214
         Cursor        0        0        0                           
         Ashmem        0        0        0                           
      Other dev    14292       52    14288                           
       .so mmap     3810     2320     1720                           
      .jar mmap        0        0        0                           
      .apk mmap     1305        0        0                           
      .ttf mmap        0        0        0                           
      .dex mmap     2960        0        0                           
     Other mmap     1738      440      236                           
        Unknown   504718      296   384284                           
          TOTAL   579836    20976   451192   624940   614093     9818
  </code></pre>