[ZODB-Dev] ZODB load/save tracing

[Adam Groszer]

Hello Jim,

What do you say,
One event type with parameters:
- method name
- method parameters
OR
Lots of event types  with parameters:
- method parameters

Sunday, February 25, 2007, 3:21:52 PM, you wrote:

> It might also be nice to have this generate events.  That is, the  
> tracing storage should call zope.event.notify.

> I intent in 3.8 or 3.9 to start having ZODB depend on zope.event.  We
> really should have used events rather than adding the callback's  
> we've added recently.

> Jim

> On Feb 25, 2007, at 3:19 AM, Adam Groszer wrote:

>> Hello Christian,
>>
>> Gosh, that looks simple. A simple decorator pattern on the storage.
>>
>> So I shall create a branch, something like
>> svn://svn.zope.org/repos/main/ZODB/branches/tracing-storage
>> from
>> svn://svn.zope.org/repos/main/ZODB/trunk
>> and start there?
>>
>> Saturday, February 24, 2007, 8:00:40 PM, you wrote:
>>
>>> Hi,
>>
>>> I'm pretty sure there are no hooks around that do what you need.
>>
>>> The methods you want to tap into would be
>>
>>> store()
>>> load*()
>>
>>> on the storages.
>>
>>> You might want to look into how the BlobStorage was created to make
>>> yourself a "tracing storage" that can be wrapped around an existing
>>> storage to allow usage with multiple other storages.
>>
>>> This could be a useful extensions to ZODB. If you go this way,   
>>> I'd be
>>> happy to help out with some of the packaging mechanics and getting  
>>> the
>>> ZConfig parts fletched out.
>>
>>> Christian
>>
>>> Am Samstag, den 24.02.2007, 14:33 +0100 schrieb Adam Groszer:
>>>> Hello,
>>>>
>>>> I'm using ZODB in a GUI application, so outside of Zope.
>>>>
>>>> I'm having performance problems. I'm already on the way of figuring
>>>> out what causes a lot of object load. getTransferCounts helped in
>>>> that. But now I would need something more detailed.
>>>>
>>>> Are there any hooks or something to get detailed object load
>>>> statistics?
>>>> Worst case I could hook into some methods of ZODB temporarly to
>>>> collect the data, but into which methods?
>>>>
>>>> Any help or pointers are welcome.
>>>>
>>
>>
>> -- 
>> Best regards,
>>  Adam                            mailto:adamg at fw.hu
>> --
>> Quote of the day:
>> Faith is believing in things when common sense tells you not to.
>> - George Seaton
>>
>> _______________________________________________
>> For more information about ZODB, see the ZODB Wiki:
>> http://www.zope.org/Wikis/ZODB/
>>
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> --
> Jim Fulton                      mailto:jim at zope.com             Python Powered!
> CTO                             (540) 361-1714                  http://www.python.org
> Zope Corporation        http://www.zope.com             http://www.zope.org




-- 
Best regards,
 Adam                            mailto:adamg at fw.hu
--
Quote of the day:
When you close your eyes to the devil, make sure that it is not a wink. 
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