Re: [update] piggybank performance profiling

From: Stefano Mazzocchi <>
Date: Thu, 08 Sep 2005 09:48:49 -0400

David R. Karger wrote:
> stefano, if you don't want to wait for a fix to the db, you might
> solve the problem by storing each predicate in both directions and
> having your interface swap the query to the fast direction if it is
> backwards.

Yes, I thought of that. But I think if both Vineet and us need hit this
wall, maybe it's time to not work around it and fix it.

BTW, with the latest fixes to the cache, PB performance is now
acceptable after a little caching happens (say a few pages get loaded
and the JVM hotspot starts optimizing for real).

So, if we get the OP-index in place before the release great, if not,
well, we'll do it in the next one.


Stefano Mazzocchi
Research Scientist                 Digital Libraries Research Group
Massachusetts Institute of Technology            location: E25-131C
77 Massachusetts Ave                   telephone: +1 (617) 253-1096
Cambridge, MA  02139-4307              email: stefanom at mit . edu
Received on Thu Sep 08 2005 - 13:44:32 EDT

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