This is odd. I can reproduce the problem. What is even stranger is
that if I call blahstuff once the count doubles from 24 to 48 but if I
blahstuff more than once (even if with lower cache time) it does not
increase the counter more than 48.
I also tried caching a lambda:repr(Blah()) as opposed to Blah and the
problem does not occur.
Looks like when caching an instance it keep a copy in cache of the
entire environment, which includes db.
I do not understand why that happens since there is not reference from
the cache.py code to the environment nor any reference from the Blah
class.
Let' move this discussion to web2py-developers. If you are not already
there, please join.
Massimo
On Jan 4, 12:10 pm, David Zejda <d...@atlas.cz> wrote:
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> Hi :)
>
> You may check the issue even with the default simple application created
> by web admin. Simply add this to the default controller:
>
> class Blah():
> def __init__(self):
> pass
>
> def blahstuff():
> p = cache.ram('blahblah',Blah,time_expire=30)
> return dict(p=BEAUTIFY(p))
>
> def guppy():
> from guppy import hpy
> h = hpy()
> label='h.heap()'
> form = FORM(LABEL("Guppy code: "),INPUT(_name="code", _size='35',
> _value=label),INPUT(_type="submit", _value="Execute.."))
> if form.accepts(request.vars, session):
> heap = eval(request.vars.code)
> label = request.vars.code
> else:
> heap = h.heap()
> fullstack = h.heap().parts
> return dict(heap=PRE(heap), fullstack=PRE(BEAUTIFY(fullstack)),
> label=label, form=form)
>
> If you visit heapy() first time, the results contains:
>
> Partition of a set of 24 objects. Total size = 80448 bytes.
> Index Count % Size % Cumulative % Kind (class / dict of class)
> 0 24 100 80448 100 80448 100 dict of gluon.dal.Field
>
> Once you run blahstuff(), heapy() reports:
>
> Partition of a set of 48 objects. Total size = 160896 bytes.
> Index Count % Size % Cumulative % Kind (class / dict of class)
> 0 48 100 160896 100 160896 100 dict of gluon.dal.Field
>
> David
>
> mdipierro wrote:
> > can you show us the guppy stats before and after caching? without
> > caching any db object?
> > can you also email me the entire app code?
>
> > On Jan 4, 9:15 am, David Zejda <d...@atlas.cz> wrote:
> > Whenever in controller/model is the class declared, the same result.
>
> > Michele Comitini wrote:
> >>>> Try to put the Blah class in the global scope of the controller. Do
> >>>> you get same result?
>
> - --
> David Zejda, Open-IT cz
> web development & serviceshttp://www.o-it.info
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