[Zope-dev] remote procedure calls to manage functions

[Michel Pelletier]

Jim Fulton wrote:
> 
> Michel Pelletier wrote:
> >

> > > I thought XML-RPC was now favoured over ZClient?
> >
> > It's not really favored, both are quite useful.  xml-rpc is more for
> > when you want two different system to interoperate.  ZClient is very
> > zope specific and probably gives you a bit more functionality than
> > xml-rpc (because it has the 'remote object' abstraction).
> 
> I don't think ZClient is really Zope specific. At least
> it's not supposed to be.  It does have a richer API, including
> features like authentication and header support.

My bad, you're right.

> >  Also, ZClient
> > is much faster i've found, probably due to the marshalling/unmarshalling
> > necessary for xml-rpc.
> 
> That's interesting......Hm.  ZClient has to marshal.  I suspect that
> xml-rpc wants some sort of optimization.

I made a test script to make about 300 xmlrpc calls to various manage_
methods.  I had to kill it after about a half-hour cuz it was takin so
long.  Here's the profiler output:

   ncalls  tottime  percall  cumtime  percall filename:lineno(function)
702883/2151  108.980    0.000  288.580    0.134
DT_InSV.py:379(__getitem__)
     7704   79.050    0.010  243.900    0.032 xmllib.py:201(goahead)
     3852   42.300    0.011   43.160    0.011
FileStorage.py:706(_finish)
158831/158827   38.010    0.000   70.140    0.000 DT_Var.py:258(render)
   732178   37.580    0.000   49.450    0.000 re.py:112(match)
495239/51912   36.690    0.000  307.200    0.006
HTTPRequest.py:741(__getitem__)
   586827   29.040    0.000   29.040    0.000 re.py:335(group)
   499291   22.900    0.000   30.530    0.000 re.py:95(search)
   875347   19.500    0.000   19.500    0.000 re.py:290(__init__)
    45981   14.090    0.000   39.000    0.001
xmllib.py:539(parse_starttag)
   748592   10.680    0.000   10.680    0.000 exceptions.py:65(__init__)
   541924    9.420    0.000    9.420    0.000 re.py:297(start)
   456273    9.190    0.000    9.190    0.000 re.py:306(end)
   107831    8.520    0.000    8.520    0.000 urllib.py:898(quote)
127647/10757    7.400    0.000  300.080    0.028 :0(?)
    49113    7.160    0.000    8.240    0.000
User.py:140(getRolesInContext)
127647/4302    6.350    0.000  303.910    0.071 DT_Util.py:325(eval)
    45981    5.360    0.000   19.870    0.000
xmllib.py:615(parse_endtag)
   111258    5.240    0.000    7.030    0.000
xmllib.py:699(handle_charref)
     3856    5.100    0.001   17.020    0.004
BaseRequest.py:224(traverse)
   284515    4.510    0.000    4.510    0.000 xmlrpclib.py:387(data)

I think you're right about optimizing, why is it spending most of it's
time in DT_InSV?

-Michel