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Overview
| Comment: | Update the "small footprint" docs to put the size at 600KB instead of 500KB, as we have crossed that threshold with the addition of window functions. |
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| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
eeaadb7da2fe79ba1810451bbb156fc9 |
| User & Date: | drh 2018-07-07 17:44:20 |
Context
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2018-07-11
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| 11:08 | Update the keyword list with all of the new keywords added for UPSERT and window functions. check-in: 824b38d28e user: drh tags: trunk | |
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2018-07-07
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| 17:44 | Update the "small footprint" docs to put the size at 600KB instead of 500KB, as we have crossed that threshold with the addition of window functions. check-in: eeaadb7da2 user: drh tags: trunk | |
| 17:36 | Minor changes to the windows function documentation. check-in: ff1e1e885a user: drh tags: trunk | |
Changes
Changes to pages/about.in.
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an [Application File Format]. SQLite database files are a
[recommended storage format] by the US Library of Congress.
Think of SQLite not as a replacement for
[http://www.oracle.com/database/index.html|Oracle] but
as a replacement for [http://man.he.net/man3/fopen|fopen()]</p>
<p>SQLite is a compact library.
With all features enabled, the [library size] can be less than 500KiB,
depending on the target platform and compiler optimization settings.
(64-bit code is larger. And some compiler optimizations
such as aggressive function inlining and loop unrolling can cause the
object code to be much larger.)
There is a tradeoff between memory usage and speed.
SQLite generally runs faster the more memory
you give it. Nevertheless, performance is usually quite good even
|
| |
49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 |
an [Application File Format]. SQLite database files are a
[recommended storage format] by the US Library of Congress.
Think of SQLite not as a replacement for
[http://www.oracle.com/database/index.html|Oracle] but
as a replacement for [http://man.he.net/man3/fopen|fopen()]</p>
<p>SQLite is a compact library.
With all features enabled, the [library size] can be less than 600KiB,
depending on the target platform and compiler optimization settings.
(64-bit code is larger. And some compiler optimizations
such as aggressive function inlining and loop unrolling can cause the
object code to be much larger.)
There is a tradeoff between memory usage and speed.
SQLite generally runs faster the more memory
you give it. Nevertheless, performance is usually quite good even
|
Changes to pages/features.in.
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 |
(<a href="omitted.html">Omitted features</a>)</li>
<li>A complete database is stored in a
<a href="onefile.html">single cross-platform disk file</a>.
Great for use as an [application file format].</li>
<li>Supports terabyte-sized databases and gigabyte-sized strings
and blobs. (See <a href="limits.html">limits.html</a>.)
<li>Small code [footprint]:
less than 500KiB fully configured or much less
with optional features omitted.</li>
<li>Simple, easy to use <a href="cintro.html">API</a>.</li>
<li>Fast: In some cases, SQLite is
[faster than the filesystem|faster than direct filesystem I/O]
<li>Written in ANSI-C. <a href="tclsqlite.html">TCL bindings</a> included.
Bindings for dozens of other languages available separately.</li>
<li>Well-commented source code with
|
| |
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 |
(<a href="omitted.html">Omitted features</a>)</li>
<li>A complete database is stored in a
<a href="onefile.html">single cross-platform disk file</a>.
Great for use as an [application file format].</li>
<li>Supports terabyte-sized databases and gigabyte-sized strings
and blobs. (See <a href="limits.html">limits.html</a>.)
<li>Small code [footprint]:
less than 600KiB fully configured or much less
with optional features omitted.</li>
<li>Simple, easy to use <a href="cintro.html">API</a>.</li>
<li>Fast: In some cases, SQLite is
[faster than the filesystem|faster than direct filesystem I/O]
<li>Written in ANSI-C. <a href="tclsqlite.html">TCL bindings</a> included.
Bindings for dozens of other languages available separately.</li>
<li>Well-commented source code with
|
Changes to pages/footprint.in.
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<li><p> GCC-7 generates binaries that are smaller and faster than GCC-5, though the difference is not that great. <li><p> Compiling with GCC and -Os results in a binary that is slightly less than 500KB in size. <li><p> The only significant design decision that developers need to make is whether to use -Os (optimize for size) or -O6 (optimize for speed). The -O6 setting makes binaries that run about 2% or 3% faster, but which are also 66% larger. The performance here is measured by counting CPU cycles using cachegrind. I-cache misses are not considered in the |
| > > |
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<li><p> GCC-7 generates binaries that are smaller and faster than GCC-5, though the difference is not that great. <li><p> Compiling with GCC and -Os results in a binary that is slightly less than 500KB in size. (Update 2018-07-07: Due to the addition of new features such as [UPSERT] and [window functions], the library footprint is now slightly larger than 500KB.) <li><p> The only significant design decision that developers need to make is whether to use -Os (optimize for size) or -O6 (optimize for speed). The -O6 setting makes binaries that run about 2% or 3% faster, but which are also 66% larger. The performance here is measured by counting CPU cycles using cachegrind. I-cache misses are not considered in the |