[Zope] Large jumps of memory use increase, and seeking overall understanding of memory use

[Jens Vagelpohl]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


On 25 Feb 2007, at 21:19, Maciej Wisniowski wrote:
>> Caching will not
>> make any difference to memory behavior I'd say.
> I'm not expert here, so I might be wrong but AFAIK
> Zope instance loads 'touched' objects from ZODB into cache.
> Each ZODB connection has its own cache, so having object
> touched more than once may cause it is loaded to more than one
> cache.
>
> The same will possibly be with multiple ZEO clients. External
> cache will save them from being touched (sometimes even once).
>
> ZODB connections cache is cleaned sometimes, so it should
> flush objects that are old and possibly save some memory then.
>
> I don't know whether amount of memory used because of above is huge
> enough to cause described problem. It's just a though.

This is a bit like clutching at straws. You're doctoring the  
symptoms, hoping that some things may not be loaded into memory. It's  
not a real solution. Memory-hungry applications will remain memory- 
hungry, cached or not.

jens



-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (Darwin)

iD8DBQFF4gWoRAx5nvEhZLIRAoGbAJ9U0DMyhO6JA3A8HCAcTkrbpjzq/QCfTxGk
wrad3smxlEaFKUXNNacUzio=
=Ef9a
-----END PGP SIGNATURE-----