| commit | c08ea5202f27ca2dc8d99cbd17b83fc58ba376ee | |
| author | Tim Hunt <T.J.Hunt@open.ac.uk> | |
| Wed, 4 Apr 2012 12:57:27 +0000 (4 13:57 +0100) | ||
| committer | Tim Hunt <T.J.Hunt@open.ac.uk> | |
| Fri, 20 Apr 2012 09:30:26 +0000 (20 10:30 +0100) | ||
| tree | 3cda4c211c4f211af6d3d32feff4095a6e54c7bc | treesnapshot (tar.gz zip) |
| parent | 93fb7b528b392c5c9013e3b3e14ccf4ba7d441d7 | commitdiff |
MDL-32462 accesslib: fix context_user::build_paths performance
The problem was that the query was updating every row whether it needed
it or not. This turns out to be a really bad thing to do on Postgres,
because it then triggers a long expensive vacuum, which lock the context
table for a long time a really bad thing to do.
The problem was that the query was updating every row whether it needed
it or not. This turns out to be a really bad thing to do on Postgres,
because it then triggers a long expensive vacuum, which lock the context
table for a long time a really bad thing to do.
| lib/accesslib.php | diffblobblamehistory |