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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 | ea65fe2b0856 |
| children |
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SVN-fs-dump-format-version: 2 UUID: 20b2173d-0f26-4070-9891-00196be06b32 Revision-number: 0 Prop-content-length: 56 Content-length: 56 K 8 svn:date V 27 2008-11-25T23:08:28.726784Z PROPS-END Revision-number: 1 Prop-content-length: 114 Content-length: 114 K 7 svn:log V 12 init project K 10 svn:author V 7 pmezard K 8 svn:date V 27 2008-11-25T23:08:28.798249Z PROPS-END Node-path: branches 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: 116 Content-length: 116 K 7 svn:log V 14 add a in trunk K 10 svn:author V 7 pmezard K 8 svn:date V 27 2008-11-25T23:08:29.163194Z 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: 118 Content-length: 118 K 7 svn:log V 16 add b in branch1 K 10 svn:author V 7 pmezard K 8 svn:date V 27 2008-11-25T23:08:30.176855Z PROPS-END Node-path: branches/branch1 Node-kind: dir Node-action: add Prop-content-length: 10 Content-length: 10 PROPS-END Node-path: branches/branch1/b Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 2 Text-content-md5: 3b5d5c3712955042212316173ccf37be Content-length: 12 PROPS-END b Revision-number: 4 Prop-content-length: 118 Content-length: 118 K 7 svn:log V 16 add b to branch2 K 10 svn:author V 7 pmezard K 8 svn:date V 27 2008-11-25T23:08:32.174817Z PROPS-END Node-path: branches/branch2 Node-kind: dir Node-action: add Node-copyfrom-rev: 1 Node-copyfrom-path: trunk Prop-content-length: 34 Content-length: 34 K 13 svn:mergeinfo V 0 PROPS-END Node-path: branches/branch2/a Node-kind: file Node-action: add Node-copyfrom-rev: 2 Node-copyfrom-path: trunk/a Text-copy-source-md5: 60b725f10c9c85c70d97880dfe8191b3 Node-path: branches/branch2/b Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 2 Text-content-md5: 3b5d5c3712955042212316173ccf37be Content-length: 12 PROPS-END b Revision-number: 5 Prop-content-length: 120 Content-length: 120 K 7 svn:log V 18 add c in branches/ K 10 svn:author V 7 pmezard K 8 svn:date V 27 2008-11-25T23:08:33.166454Z PROPS-END Node-path: branches/c Node-kind: file Node-action: add Prop-content-length: 10 Text-content-length: 2 Text-content-md5: 2cd6ee2c70b0bde53fbe6cac3c8b8bb1 Content-length: 12 PROPS-END c Revision-number: 6 Prop-content-length: 109 Content-length: 109 K 7 svn:log V 8 change c K 10 svn:author V 7 pmezard K 8 svn:date V 27 2008-11-25T23:08:34.144541Z PROPS-END Node-path: branches/c Node-kind: file Node-action: change Text-content-length: 4 Text-content-md5: 63fad9092ad37713ebe26b3193f89c41 Content-length: 4 c c