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Overview
| Comment: | Fix the version number of Ubuntu. |
|---|---|
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
c9e67374a145f5c1e2b54ace0245ae62 |
| User & Date: | drh 2014-09-05 12:50:40 |
Context
|
2014-09-08
| ||
| 12:09 | Add the OpenDocument as SQLite case study. check-in: 2c57c78315 user: drh tags: trunk | |
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2014-09-05
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| 12:50 | Fix the version number of Ubuntu. check-in: c9e67374a1 user: drh tags: trunk | |
|
2014-09-01
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| 18:31 | Further tweaks to the change log for 3.8.7. check-in: e3957c53b1 user: drh tags: trunk | |
Changes
Changes to pages/changes.in.
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 |
chng {2014-11-?? (3.8.7)} {
<p><b>Performance Enhancements:</b>
<li>Dozens of micro-optimizations result in 6.7% fewer CPU cycles needed
to do the same amount work. (Measured using
[http://valgrind.org/docs/manual/cg-manual.html|cachegrind] on the
[http://www.sqlite.org/src/artifact/83f6b3318f7ee|speedtest1.c] workload on
Ubuntu 10.13 x64 with gcc 4.8.1 and -Os. Your performance may vary.)
<li>Provide the ability for the sorter to start and use auxiliary helper threads in order
to increase real-time response. This feature is off by default and may be
enabled using the [PRAGMA threads] command or the [SQLITE_DEFAULT_WORKER_THREADS]
compile-time option.
<li>Enhance the [skip-scan] optimization so that it is able to skip index terms that
occur in the middle of the index, not just as the left-hand side of the index.
<li>The query planner is now able to do a better job of understanding constants that
|
| |
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 |
chng {2014-11-?? (3.8.7)} {
<p><b>Performance Enhancements:</b>
<li>Dozens of micro-optimizations result in 6.7% fewer CPU cycles needed
to do the same amount work. (Measured using
[http://valgrind.org/docs/manual/cg-manual.html|cachegrind] on the
[http://www.sqlite.org/src/artifact/83f6b3318f7ee|speedtest1.c] workload on
Ubuntu 13.10 x64 with gcc 4.8.1 and -Os. Your performance may vary.)
<li>Provide the ability for the sorter to start and use auxiliary helper threads in order
to increase real-time response. This feature is off by default and may be
enabled using the [PRAGMA threads] command or the [SQLITE_DEFAULT_WORKER_THREADS]
compile-time option.
<li>Enhance the [skip-scan] optimization so that it is able to skip index terms that
occur in the middle of the index, not just as the left-hand side of the index.
<li>The query planner is now able to do a better job of understanding constants that
|