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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 | 1b9d004a8c0a |
| children |
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SVN-fs-dump-format-version: 2 UUID: 1e1f7d3f-4361-4205-84f8-c0d471d161d2 Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2009-06-11T15:51:46.768965Z 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 2009-06-11T15:51:47.134555Z 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 2009-06-11T15:51:48.129578Z PROPS-END Node-path: trunk/a Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 2 Text-content-md5: 60b725f10c9c85c70d97880dfe8191b3 Content-length: 12 PROPS-END a Revision-number: 3 Prop-content-length: 104 Content-length: 104 K 7 svn:log V 7 Branch. K 10 svn:author V 3 djc K 8 svn:date V 27 2009-06-11T15:51:51.120532Z PROPS-END Node-path: branches/test Node-kind: dir Node-action: add Node-copyfrom-rev: 2 Node-copyfrom-path: trunk Revision-number: 4 Prop-content-length: 113 Content-length: 113 K 7 svn:log V 15 Move on branch. K 10 svn:author V 3 djc K 8 svn:date V 27 2009-06-11T15:51:54.124503Z PROPS-END Node-path: branches/test/b Node-kind: file Node-action: add Node-copyfrom-rev: 3 Node-copyfrom-path: branches/test/a Text-copy-source-md5: 60b725f10c9c85c70d97880dfe8191b3 Node-path: branches/test/a Node-action: delete Revision-number: 5 Prop-content-length: 111 Content-length: 111 K 7 svn:log V 13 Close branch. K 10 svn:author V 3 djc K 8 svn:date V 27 2009-06-11T15:51:57.130547Z PROPS-END Node-path: branches/test Node-action: delete