I was used to having a post-commit hook trigger processing of the commit message by Trac (SVN repository). The comment (or action) was added immediately.
Now I switched to Mercurial as a VCS and Redmine as a ticketing system. Redmine does recognize information in changeset/commit messages like "refs #185" - but it takes several minutes to appear in the ticket.
Any ideas why this is? Is the routine to grab the changesets called periodically somehow?