Chandler View Switching Performance

I am beginning to look into the performance of switching views within Chandler. I will be writing up a more detailed review today, but here are the hotshot numbers for switching views.

Top expensive methods...

         115718 function calls (109738 primitive calls) in 7.118 CPU seconds

   Ordered by: internal time, call count
   List reduced from 474 to 20 due to restriction <20>

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
5328/4840    0.643    0.000    1.837    0.000 item.py:444(getAttributeValue)
6451/6211    0.333    0.000    0.544    0.000 item.py:138(__setattr__)
      862    0.287    0.000    1.296    0.002 dbcontainer.py:446(readName)
     6580    0.224    0.000    0.376    0.000 threadlocal.py:39(_getCurrentThreadLoca
ls)
     4118    0.211    0.000    0.553    0.000 xmlrepository.py:494(_getTxn)
       41    0.185    0.005    4.889    0.119 libxml2.py:4680(parseChunk)
     5653    0.170    0.000    0.170    0.000 item.py:2271(_countAccess)
     1085    0.162    0.000    1.614    0.001 itemhandler.py:68(endElement)
     6584    0.152    0.000    0.152    0.000 threading.py:609(currentThread)
     1125    0.141    0.000    2.921    0.003 kind.py:120(getAttribute)
     1009    0.140    0.000    0.556    0.001 xmlrepository.py:481(abortTransaction)
     1050    0.130    0.000    0.408    0.000 xmlrepository.py:461(startTransaction)
     4350    0.129    0.000    0.129    0.000 item.py:1127(hasAttributeValue)
     2323    0.125    0.000    0.211    0.000 linkedmap.py:196(get)
     2390    0.122    0.000    0.622    0.000 attribute.py:28(getAspect)
     1186    0.122    0.000    1.971    0.002 kind.py:109(resolve)
     4562    0.120    0.000    0.380    0.000 threadlocal.py:21(__getattr__)
     1059    0.100    0.000    0.365    0.000 itemref.py:855(get)
      908    0.099    0.000    1.451    0.002 xmlrefdict.py:77(resolveAlias)
2548/2332    0.097    0.000    1.151    0.000 item.py:128(__getattr__)