Hi, I am just starting to test with rock. And it could be, I have just the opposit effect: Only UFS is used, rock not, using default of 512Kb righ now. However, will do more testing tomorrow, but I am a bit suspicious regarding this line in your squid.conf: maximum_object_size_in_memory 8 KB May be ONLY objects <=8kb are cached at all. And larger ones are never cached. Then your effect would be explanable: Always rock is used. Worth to give it a try and use something like maximum_object_size_in_memory 64 KB -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Splitting-objects-by-size-into-different-cache-dir-not-working-for-me-tp4658225p4658316.html Sent from the Squid - Users mailing list archive at Nabble.com.