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     7     Nokia Corporation - initial contribution.

     8 Contributors: 

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    10 <!DOCTYPE task

    11   PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">

    12 <task id="GUID-DC0BF2A3-613B-595C-BF47-07F29E2A7893" xml:lang="en"><title>Leaf

    13 Directory Name Cache Configuration Tutorial</title><shortdesc>Describes how to configure the cache for Leaf Directories in the

    14 FAT file system. </shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody>

    15 <prereq id="GUID-B6A57876-D5D9-5B28-92F4-B5721265619D"><p>Before you start,

    16 you must: </p> <ul>

    17 <li id="GUID-84410516-D4E6-5931-9D20-FE277652E816"><p>have the knowledge of

    18 the <xref href="GUID-AFFC4002-3A06-5458-A4D9-1E0AEDB8C534.dita">FAT file system </xref>  </p> </li>

    19 <li id="GUID-7AF7A28B-2975-5BC3-B5C8-BB344A598EA5"><p>have the knowledge of <xref href="GUID-AFFC4002-3A06-5458-A4D9-1E0AEDB8C534.dita#GUID-AFFC4002-3A06-5458-A4D9-1E0AEDB8C534/GUID-266ACC2C-DEE2-51E0-915B-DBB75AA9BEA8">Leaf

    20 Directory Name cache</xref>. </p> </li>

    21 </ul> </prereq>

    22 <context id="GUID-FE52BD47-4F97-5C8F-BD5D-15351EB10D77"><p>The available size

    23 of the leaf directory name cache is customisable. The customisation enables

    24 the licensees to balance between the memory and performance of a system. A

    25 typical leaf directory name cache entry requires 10 bytes to 0.5 Kilobytes.

    26 The available memory for the cache is configured in the <filepath>estart.txt</filepath> file

    27 by specifying the number of entries to be cached in each drive. The developers

    28 must configure each drive available on the device. </p> <p>To add the number

    29 of leaf directory names to be cached in the <filepath>estart.txt</filepath> file,

    30 do the following: </p></context>

    31 <steps id="GUID-5B7D55B8-C77F-5921-81DA-90C4BE2A10CD">

    32 <step id="GUID-7D44FA9E-5563-54DF-B0D9-2024514B744D"><cmd>Open the estart.txt

    33 file </cmd>

    34 </step>

    35 <step id="GUID-F572963E-88D7-5A08-966A-19173623CC2C"><cmd/>

    36 <info>Create an entry for a drive </info>

    37 </step>

    38 <step id="GUID-F5D8DA4F-55DC-5497-9822-85294E0418C4"><cmd/>

    39 <info>Add the number of recently used files to be cached in the leaf directory

    40 name cache for a drive. For example, if 32 most recently used leaf directory

    41 names must be cached for drive <code>D:\</code>, then add the following

    42 entry in the <filepath>estart.txt</filepath>  file. <note>  The default value

    43 is 1. Even if there is no  entry created in the estart.txt, the file server

    44 remembers the last visited  entry created in the estart.txt, the file server

    45 remembers the last visited file. The recommended maximum value for the leaf

    46 directory name cache is 32.</note></info>

    47 </step>

    48 <step id="GUID-E2F30B63-F795-5D12-9865-BF01DF832FC4"><cmd/>

    49 <info>Repeat the steps 2 and 3 for other drives </info>

    50 </step>

    51 <step id="GUID-77793647-1EC2-5F4A-BBA1-FF177EDC0202"><cmd/>

    52 <info>Save and close the <filepath>estart.txt</filepath> file </info>

    53 </step>

    54 <step id="GUID-88F40D66-9324-59D3-AAA1-46A207F42D98"><cmd/>

    55 <info>Build the ROM </info>

    56 </step>

    57 </steps>

    58 <result id="GUID-D4275C32-CB1E-531D-ADAD-129CFB2FFFA1"><p>32 most recently

    59 used leaf directory names will be cached in the leaf directory name cache

    60 for drive <codeph>D:</codeph>  </p> </result>

    61 </taskbody><related-links>

    62 <link href="GUID-3D8B134E-3C2F-5BAF-82AB-0AB786A5D22D.dita"><linktext>Directory

    63 Cache                 Configuration Tutorial</linktext></link>

    64 </related-links></task>