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<h2>Search results</h2><ol><li>
<h3>
  <a href="https://yaffs.net/documents/how-yaffs-works">How Yaffs works</a>
</h3>

  <p>…  as well as a count of the objects in the bucket.  
   
  
  <strong>Cache</strong>: Yaffs provides a read/write <strong>cache</strong> that significantly improves performance for short operations. The size of the <strong>cache</strong> can be set at run-time.  
   
  
  The usage of these …</p>
  <p><span lang="" about="/user/charles-manning" typeof="schema:Person" property="schema:name" datatype="">Charles Manning</span> - 27 Jun 2017 - 3:33am</p>
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<h3>
  <a href="https://yaffs.net/documents/considerations-choosing-flash-file-system">Considerations in Choosing a Flash File System</a>
</h3>

  <p>…  support functions to reduce this inefficiency and force the <strong>cache</strong> to be written out, but this may take many seconds, …  and simpler, it does not need deep caching. The Yaffs <strong>cache</strong> is small and used only for data alignment purposes and …  reads and writes. Yaffs files are always flushed from the <strong>cache</strong> when they are closed. Yaffs also provides its own …</p>
  <p><span lang="" about="/user/laurie" typeof="schema:Person" property="schema:name" datatype="">Laurie</span> - 25 Jul 2017 - 2:40pm</p>
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<h3>
  <a href="https://yaffs.net/documents/yaffs-tuning">Yaffs Tuning</a>
</h3>

  <p>…  in the data area. If inbandTags is set then the short Op <strong>cache</strong> must be enabled (ie nShortOpCaches must be non-zero.  …   
			  Number of chunks to store in the short operation <strong>cache</strong>. Zero disables caching. Typical value is 10 to 20 or …</p>
  <p><span lang="" about="/user/admin" typeof="schema:Person" property="schema:name" datatype="">Admin</span> - 27 Jun 2017 - 3:37am</p>
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<h3>
  <a href="https://yaffs.net/documents/yaffs-robustness-and-testing">YAFFS Robustness and Testing</a>
</h3>

  <p>…  the data to flash. This is a two-edged sword as data in the <strong>cache</strong> will be lost on a power failure and syncing the file …  but instead tests other aspects such as clean shutdowns, <strong>cache</strong> integrity and write performance. This gives a useful …</p>
  <p><span lang="" about="/user/charles-manning" typeof="schema:Person" property="schema:name" datatype="">Charles Manning</span> - 7 Jun 2017 - 11:05pm</p>
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<h3>
  <a href="https://yaffs.net/archives/yaffs1-memory-footprint">Yaffs1 memory footprint</a>
</h3>

  <p>…    
   If shortOpCaches are enabled, then 524 bytes per <strong>cache</strong> entry (5 to 10 is a good number).   
   About 120 …  on approx:  
  
  1) 55kBytes   
  2a) 5kB   
  2b) 3kB (5 <strong>cache</strong> entries)   
  2c) 60kB   
  2d) 16kB   
  2e) 256kB   …</p>
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<h3>
  <a href="https://yaffs.net/yaffs-porting-guide">Yaffs Porting Guide</a>
</h3>

  <p>…       

  This configures the number of entries in the Yaffs <strong>cache</strong> for this device. A value of zero defeats the <strong>cache</strong>. A value of 10 to 20 is recommended for most systems. …</p>
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