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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 | 496c0354019c |
| children |
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SVN-fs-dump-format-version: 2 UUID: df2126f7-00ab-4d49-b42c-7e981dde0bcf Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2008-10-07T22:49:12.059692Z PROPS-END Revision-number: 1 Prop-content-length: 111 Content-length: 111 K 7 svn:log V 11 Empty dirs. K 10 svn:author V 5 durin K 8 svn:date V 27 2008-10-07T22:49:41.118037Z 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: 108 Content-length: 108 K 7 svn:log V 9 Add alpha K 10 svn:author V 5 durin K 8 svn:date V 27 2008-10-07T23:23:02.991743Z PROPS-END Node-path: trunk/alpha Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 12 Text-content-md5: 3c72ebf8bbd7fa88b1fdcee5398b5a17 Content-length: 22 PROPS-END file: alpha Revision-number: 3 Prop-content-length: 115 Content-length: 115 K 7 svn:log V 15 Add third_party K 10 svn:author V 5 durin K 8 svn:date V 27 2008-10-27T03:16:13.831333Z PROPS-END Node-path: third_party Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Node-path: third_party/magic Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Node-path: third_party/magic/the_magic_software Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 7 Text-content-md5: bc82cb068ef102a1f4e296992e5979ef Content-length: 17 PROPS-END magic! Revision-number: 4 Prop-content-length: 131 Content-length: 131 K 7 svn:log V 31 Copy magic in from third_party. K 10 svn:author V 5 durin K 8 svn:date V 27 2008-10-27T03:16:32.737023Z PROPS-END Node-path: trunk/magic Node-kind: dir Node-action: add Node-copyfrom-rev: 3 Node-copyfrom-path: third_party/magic Prop-content-length: 34 Content-length: 34 K 13 svn:mergeinfo V 0 PROPS-END