Bugs item #2757110, was opened at 2009-04-13 02:04 Message generated for change (Tracker Item Submitted) made by boncz You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=482468&aid=2757110&group_id=56967
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: PF/compiler Group: Pathfinder CVS Head Status: Open Resolution: None Priority: 5 Private: No Submitted By: Peter Boncz (boncz) Assigned to: Jan Rittinger (tsheyar) Summary: plan_subexpression slow Initial Comment: many MTest benchmarks/XBench queries, among which for instance benchmarks/XBench/DC/SD/q10.xq fail due to timeout. It appears many queries now take ages to compile, with the routine 'plan_subexpression' being called in a very deep stack. Is there a bug in the optimization algorithm, or has physical optimization by now become so ambitious we need a mechanism in the pf compiler to keep the search sapce under control (or stop searching after a time or effort limit). ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=482468&aid=2757110&group_id=56967 ------------------------------------------------------------------------------ This SF.net email is sponsored by: High Quality Requirements in a Collaborative Environment. Download a free trial of Rational Requirements Composer Now! http://p.sf.net/sfu/www-ibm-com _______________________________________________ Monetdb-bugs mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/monetdb-bugs
