-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Chris Withers wrote: > Hi all, > > (sorry if some of this is Zope 2 - ish, the thread kinda started here > and the underlying bits of this are certainly relevant to Zope 3) > > As you may have guessed by the flurry of mails today, I've been > refactoring a 2000 test suite to use layers. > > I was hoping to use savepoints to speed things up... > > Each layer drops a savepoint in setUp and then rolls it back it in > tearDown. Likewise, the TestCase's setUp would drop a savepoint and the > tearDown would roll back to it. > > Sounds great, no? > > Well, no, actually: > > 1. Usual problems of some datamanagers not supporting savepoints. > MaildropHost and some of the project's own products datamanagers do. > mxODBC does not :-/ > > 2. dropping savepoints is slow. Figuring this might be due to saving > data from the layer each time transaction.savepoint() is called, I > thought of getting round this by dropping a savepoint at the end of the > layer's setUp method. This did make thing a litte better, but: > > 3. savepoints are really slow :-( > > What's the usecase for savepoints? I would have thought this kind of > thing would be ideal, but they seem really slow... > > For example, the above test suite takes about 300s to run prior to > introducing layers. > > Using savepoints in place of transaction.commit()'s meant it took over > 400s! :-( > > So I'm left what the actual use for savepoints is and if they could be > made any faster?
Dunno, but this question belongs on zodb-dev. Tres. - -- =================================================================== Tres Seaver +1 202-558-7113 [EMAIL PROTECTED] Palladion Software "Excellence by Design" http://palladion.com -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFFNRbm+gerLs4ltQ4RArYgAJ9NYbG6fk3dL2D554JYkr1WxX17IgCg1UKU 2r+I33mqdDRHaUWTPKyvXfc= =h1Tg -----END PGP SIGNATURE----- _______________________________________________ Zope3-dev mailing list Zope3-dev@zope.org Unsub: http://mail.zope.org/mailman/options/zope3-dev/archive%40mail-archive.com