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maps: increase sqlite cache size automatically
Sqlite cache size is 2MB by default. Increasing the cache size can speed up
migration. In a large repo with millions of revisions, changing the cache
size to a big enough value reduces at least 30% of the migration time.
Give the general trends that sacrifices space for speed, this patch auto
tunes the cache size to be big enough to hold the entire database.
| author | Jun Wu <quark@fb.com> |
|---|---|
| date | Tue, 31 May 2016 15:44:11 +0100 |
| parents | 8e025a6f0db4 |
| children |
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SVN-fs-dump-format-version: 2 UUID: e45f170d-c19e-4c14-836b-556bb41c9429 Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2010-02-23T17:55:37.753400Z PROPS-END Revision-number: 1 Prop-content-length: 100 Content-length: 100 K 7 svn:log V 3 btt K 10 svn:author V 3 djc K 8 svn:date V 27 2010-02-23T17:55:38.066481Z PROPS-END Node-path: branches Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Node-path: tags Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Node-path: trunk Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Revision-number: 2 Prop-content-length: 106 Content-length: 106 K 7 svn:log V 9 Add file. K 10 svn:author V 3 djc K 8 svn:date V 27 2010-02-23T17:55:39.058424Z PROPS-END Node-path: trunk/a Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 2 Text-content-md5: 60b725f10c9c85c70d97880dfe8191b3 Text-content-sha1: 3f786850e387550fdab836ed7e6dc881de23001b Content-length: 12 PROPS-END a Revision-number: 3 Prop-content-length: 119 Content-length: 119 K 7 svn:log V 21 Branch to be renamed. K 10 svn:author V 3 djc K 8 svn:date V 27 2010-02-23T17:55:42.051658Z PROPS-END Node-path: branches/badname Node-kind: dir Node-action: add Node-copyfrom-rev: 2 Node-copyfrom-path: trunk Revision-number: 4 Prop-content-length: 119 Content-length: 119 K 7 svn:log V 21 Branch to be unnamed. K 10 svn:author V 3 djc K 8 svn:date V 27 2010-02-23T17:55:45.050455Z PROPS-END Node-path: branches/feature Node-kind: dir Node-action: add Node-copyfrom-rev: 3 Node-copyfrom-path: trunk