Anand Patil (el 2008-05-20 a les 22:54:10 +0100) va dir:: > On Tue, May 20, 2008 at 9:37 AM, Ivan Vilata i Balaguer <[EMAIL PROTECTED]> > wrote: > > > Then, if you have more than 4096 > > nodes, you should be careful not to place them all in the same group to > > avoid performance problems with the object tree. > > Do you mean 4096 leaf nodes, or 4096 nodes in general? Is it OK to have more > than 4096 groups, with only a few EArrays etc. each, in the same group?
Well, the problem raises when you cram a lot of child nodes (be them groups or leaves) right under a single group. It's completely OK to have way more than 4096 nodes in a file (the LRU node cache handles this efficiently and PyTables only loads the nodes you actually use). Grouping childs into fewer groups is OK, as long as there are less than 4096 groups, and the groups themselves have less than 4096 children each. HTH, :: Ivan Vilata i Balaguer @ Welcome to the European Banana Republic! @ http://www.selidor.net/ @ http://www.nosoftwarepatents.com/ @
signature.asc
Description: Digital signature
------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________ Pytables-users mailing list Pytables-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/pytables-users
