We've been calculating Ram cache hit rate as proxy.process.cache.ram_cache.hits / proxy.process.cache.ram_cache.misses
However, we've sometimes seen the disk cache hit rate trafficserver_proxy.process.http.cache_hit_.* / trafficserver_proxy.process.http.cache_(hit|miss)_.* to be lower than the RAM cache hit rate -- which shouldn't be able to happen. At the 2014 Sunnyvale Summit, AMC indicated that proxy.process.cache.ram_cache.misses does not measure what it's label implies (but I what it actually measures is slightly beyond my grasp. Is this the proper way to get RAM cache hit rate? proxy.process.cache.ram_cache.hits / trafficserver_proxy.process.cache.ram_cache.hits,trafficserver_proxy.process.http.cache_(hit|miss)_.* thanks, miles
