| commit | 3deed5e078f2998573589b1ca03d89f41ea346e9 | [log] [tgz] |
|---|---|---|
| author | Luke Diamand <luke@diamand.org> | Fri Jun 08 21:32:48 2018 +0100 |
| committer | Junio C Hamano <gitster@pobox.com> | Tue Jun 12 14:46:09 2018 -0700 |
| tree | 7d2c3fd209beb8884a1b0ac3318c16a10c224846 | |
| parent | 8fa0abf830ef3c8e97846cef0986589b49bcfe6f [diff] |
git-p4: auto-size the block git-p4 originally would fetch changes in one query. On large repos this could fail because of the limits that Perforce imposes on the number of items returned and the number of queries in the database. To fix this, git-p4 learned to query changes in blocks of 512 changes, However, this can be very slow - if you have a few million changes, with each chunk taking about a second, it can be an hour or so. Although it's possible to tune this value manually with the "--changes-block-size" option, it's far from obvious to ordinary users that this is what needs doing. This change alters the block size dynamically by looking for the specific error messages returned from the Perforce server, and reducing the block size if the error is seen, either to the limit reported by the server, or to half the current block size. That means we can start out with a very large block size, and then let it automatically drop down to a value that works without error, while still failing correctly if some other error occurs. Signed-off-by: Luke Diamand <luke@diamand.org> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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