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Overview
| Comment: | Update the CPU usage improvement for 3.21.0. |
|---|---|
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
4ea4e27dc5f0954141d72b8348b50e8a |
| User & Date: | drh 2017-08-30 04:46:03 |
Context
|
2017-08-30
| ||
| 04:50 | Update the speed-and-size spreadsheet. check-in: 402ce78c69 user: drh tags: trunk | |
| 04:46 | Update the CPU usage improvement for 3.21.0. check-in: 4ea4e27dc5 user: drh tags: trunk | |
|
2017-08-29
| ||
| 13:19 | Remove the scratch memory allocator. check-in: d482cfb5ea user: drh tags: trunk | |
Changes
Changes to pages/changes.in.
46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 |
</ol>
<li> Enhanced the [CSV virtual table] so that it accepts the last row of
input if the final new-line character is missing.
<li> Remove the rarely-used "scratch" memory allocator. Replace it with the
[SQLITE_CONFIG_SMALL_MALLOC] configuration setting that gives SQLite
a hint large memory allocations should be avoided when possible.
<li> Added the swarm virtual table to the existing union virtual table extension.
<li> Miscellaneous [microoptimizations] reduce CPU usage by about 1.6%.
<li> Bug fixes:
<ol type="a">
<li> Fix a faulty assert() statement discovered by OSSFuzz.
Ticket [https://sqlite.org/src/info/cb91bf4290c211d|cb91bf4290c211d]
<li> Fix an obscure memory leak in [sqlite3_result_pointer()].
Ticket [https://sqlite.org/src/info/7486aa54b968e9b|7486aa54b968e9b]
<li> Avoid a possible use-after-free error by deferring schema resets until
|
| |
46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 |
</ol>
<li> Enhanced the [CSV virtual table] so that it accepts the last row of
input if the final new-line character is missing.
<li> Remove the rarely-used "scratch" memory allocator. Replace it with the
[SQLITE_CONFIG_SMALL_MALLOC] configuration setting that gives SQLite
a hint large memory allocations should be avoided when possible.
<li> Added the swarm virtual table to the existing union virtual table extension.
<li> Miscellaneous [microoptimizations] reduce CPU usage by about 2.0%.
<li> Bug fixes:
<ol type="a">
<li> Fix a faulty assert() statement discovered by OSSFuzz.
Ticket [https://sqlite.org/src/info/cb91bf4290c211d|cb91bf4290c211d]
<li> Fix an obscure memory leak in [sqlite3_result_pointer()].
Ticket [https://sqlite.org/src/info/7486aa54b968e9b|7486aa54b968e9b]
<li> Avoid a possible use-after-free error by deferring schema resets until
|