> From: Gerhard Froehlich [mailto:[EMAIL PROTECTED]] > > Peter, Vadim, > > >From: Vadim Gritsenko [mailto:[EMAIL PROTECTED]] > > > >> I'm like a blind man tuning a television! > >> > >> I understand from the documentation that I can tune the setting in > >> cocoon.xconf to control the cache, so that the most recently used > >> objects are in > >> memory and less recently used objects are on disk. But a > >> few points are unclear > >> to me could someone please expain? > >> > >> <cache-transient > >> class="org.apache.cocoon.components.store.MRUMemoryStore" > >> logger="core.store.transient"> > >> <parameter name="maxobjects" value="100"/> > >> <parameter name="use-persistent-cache" value="true"/> > >> </cache-transient> > >> > >> 1) Does 'maxobject' just define the max number of objects in memory? > >> Or does it include the items on disk? > > > >Only in memory. When new object added and count increases over max, > >least recent used object is swapped to the persistent cache (read: hard > >drive) > > Correct. > > >> 2) When <parameter name="use-persistent-cache" value="true"/> do the > >> cached objects go onto disk only when maxobjects is exceeded? > > > >Yes, as of currect CVS. No for the 2.0.1. > > Ahem yes of course for the 2.01 version too, or did I missed something > here. That's only a flag. You answered this question in #1...or did > I drunk to much beer tonight ;).
In 2.0.1 (IIRC) they go to disk directly. Or this was in 2.0? (I had a Titanic Tea, and it had not only ice and tea in it) > >> 3) Is there any control over the number of objects on the disk? > > > >No. Persistent cache does not have such controls. You can extend its > >implementation if you like. > > Correct, no control. Maybe we can implement something with the new > Jisp based Filesystem store. It's possible to control the size of the > dat file. That's interesting. Btw, how to enumerate through entries there? I think this method is not implemented yet in store. > >> 4) When the store-janitor decides to free memory, do the freed items > >> go to persistent-cache or are they lost? > > > >Depends on store implementation. MRU store in the CVS uses persistent > >cache to swap exceeding objects. Janitor does not care what store does > >with extra objects. > > Again, I only see the main difference from 2.01 and CVS in the Jisp based > Filesystem Store component. Can you enlighten me, Vadim? Sure! MemoryStore just ignores commands from Janitor. I was hinting that MRUMemoryStore is not *the* store, other implementations are also possible. Vadim > >> When I change these settings I am unable to see what is happening. > >> I've tried using the status page and its a great start but there's > >> not enough detail. > > > >Send in a patch! > > Agree ;) > > ~Gerhard > > ----------------------------------------------------- > That must be wonderful! I don't understand it at all. > ----------------------------------------------------- --------------------------------------------------------------------- Please check that your question has not already been answered in the FAQ before posting. <http://xml.apache.org/cocoon/faqs.html> To unsubscribe, e-mail: <[EMAIL PROTECTED]> For additional commands, e-mail: <[EMAIL PROTECTED]>
