Re: [xwiki-devs] hibernate cache optimization?

Not many answers down here. Let me ask a simpler question: is ehcache used per default? I seem to see a bit more about oscache... is this one rather used? Are both used?

thanks in advance Paul Le 1 mai 2011 à 22:06, Paul Libbrecht a écrit : > Hello XWiki-devs, > > maybe this forum is better than curriki-dev. > > In short: how can I boost the size of the cache of objects held by hibernate? > > thanks in advance > > paul > > >> as you know curriki.org is somewhat of a fat server serving really many requests. >> >> One symptom we are seeing on the production machine only, almost, is: >> xwiki.getPlugin("curriki").fetchUserGroups(). >> that sometimes takes more than 1 minute and sometimes much less, all for the same user. >> On the development machine it takes time with users with a lot of groups only when the hibernate cache is flushed. >> >> My interpretation is that this method is fetching the group and probably a lot more. My answer would be to go low-level. >> >> But another answer would be to ensure that the hibernate cache is big enough so that all these stay in memory. Making this possible would also speed up a huge amount of other things. >> >> Are we talking of the file ehcache.xml's attribute: >> maxElementsInMemory="10000" >> ? >> I sure could raise this by a factor 10 if true. >> >> thanks in advance >> >> paul