[Zope-dev] Zope Caches

[Brian R Brinegar]

On Fri, 22 Nov 2002, Shane Hathaway wrote:

> Brian R Brinegar wrote:
> > Okay,
> >
> > Tell me where I'm wrong or if I'm lucky and got it right.
> >
> > There is 1 client cache per thread on a ZEO client and 1 ZEO cache per ZEO
> > client. The ZEO cache is shared between the threads.
> >
> > We have 3 machines 4 threads each that's 3 * 4 + 3 = 15 caches? Is this
> > correct? If so what's cached in each of the caches? When accessing the
> > cache parameters from the Control_Panel which caches am I managing?
>
> The control panel manages the ZODB cache, of which you have 4 per box.
> Your custom_zodb.py manages the size of the ZEO cache.
>
> Are you using Zope 2.5 or 2.6?  You'll really want 2.6 for this, since
> it constrains the ZODB cache size much better.

We're running 2.5 and I don't think it's going to be possible for us to
upgrade to 2.6 until March because we have a heavily used production
system.

Currently we don't specify cache_size in our custom_zodb.py. I guess the
default is 20 meg. Our Database (packed) is about 6 Gig.

-Brian