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SHA1 Hash:04448addda33fd313d320c1bb9cd669df9439242
Date: 2013-05-23 22:56:49
User: drh
Comment:Fix a typo in mmap.html.
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<li><p>Performance does not always increase with memory-mapped I/O.  In fact,
    it is possible to construct test cases where performance is reduced
    by the use of memory-mapped I/O, though this is hard to do.</p>
</ol>

<p>Because of the potential disadvantages, memory-mapped I/O is turned
off by default.  To active memory-mapped I/O, use the [mmap_size pragma]
and set the mmap_size to some large number, usually 256MB or larger, depending
on how much address space your application can spare.  The rest is
automatic.  The [PRAGMA mmap_size] statement will be a silent no-op on
systems that do not support memory-mapped I/O.</p>

<h2>How Memory-Mapped I/O Works</h2>








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<li><p>Performance does not always increase with memory-mapped I/O.  In fact,
    it is possible to construct test cases where performance is reduced
    by the use of memory-mapped I/O, though this is hard to do.</p>
</ol>

<p>Because of the potential disadvantages, memory-mapped I/O is turned
off by default.  To activate memory-mapped I/O, use the [mmap_size pragma]
and set the mmap_size to some large number, usually 256MB or larger, depending
on how much address space your application can spare.  The rest is
automatic.  The [PRAGMA mmap_size] statement will be a silent no-op on
systems that do not support memory-mapped I/O.</p>

<h2>How Memory-Mapped I/O Works</h2>