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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 | e2c3349b2cca |
| children |
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SVN-fs-dump-format-version: 2 UUID: 6506bfb9-9ce8-4b91-8357-4dc8bef2ecc6 Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2010-07-10T11:55:08.483993Z PROPS-END Revision-number: 1 Prop-content-length: 122 Content-length: 122 K 7 svn:log V 21 create initial layout K 10 svn:author V 6 danchr K 8 svn:date V 27 2010-07-10T11:55:57.419315Z 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: 111 Content-length: 111 K 7 svn:log V 10 add a file K 10 svn:author V 6 danchr K 8 svn:date V 27 2010-07-10T11:56:54.708286Z PROPS-END Node-path: trunk/a.txt Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 0 Text-content-md5: d41d8cd98f00b204e9800998ecf8427e Text-content-sha1: da39a3ee5e6b4b0d3255bfef95601890afd80709 Content-length: 10 PROPS-END Revision-number: 3 Prop-content-length: 116 Content-length: 116 K 7 svn:log V 15 create a branch K 10 svn:author V 6 danchr K 8 svn:date V 27 2010-07-10T11:57:29.710978Z PROPS-END Node-path: branches/the-branch Node-kind: dir Node-action: add Node-copyfrom-rev: 2 Node-copyfrom-path: trunk Revision-number: 4 Prop-content-length: 115 Content-length: 115 K 7 svn:log V 14 set a property K 10 svn:author V 6 danchr K 8 svn:date V 27 2010-07-10T11:58:41.440627Z PROPS-END Node-path: branches/the-branch Node-kind: dir Node-action: change Prop-content-length: 42 Content-length: 42 K 12 the-property V 9 something PROPS-END