On 31 Jan 2012, at 09:34, Bela Ban wrote:
> IMO, measuring object size using java.lang.instrument is not a good > idea: first of all, it's probably very slow and the time to do so is > linear to the number of live objects. +1 I remember prototyping this for JBossCache and the harness and that's what I found as well. > Second, this probably takes into > acount only objects in the cache, but not the cache structures used by > Infinispan, JGroups and so on... > > The approach I've recommended before is to trigger an eviction policy > based on free/available memory. This can easily be fetched from the JVM > via JMX... ..or keep the in-memory data in serialized form (byte[]) - that can be counted - and add an empiric factor (TBD) for the harness/ISPN structure that holds the data. AFAIK coherence does this. _______________________________________________ infinispan-dev mailing list [email protected] https://lists.jboss.org/mailman/listinfo/infinispan-dev
