SQUID 2.6 disk usage didn't grow HELP

[Narek Gharibyan]

I set squid 2.6 transparent proxy with default settings on P4 2000 RAM 512/
80GB HDD. I change only

 

cache_mem 128 MB

 

cache_dir ufs /usr/local/squid/cache 40960 16 256

 

Squid works normally and do caching. It takes 300Mb RAM, and about 3GB HDD
space, but it DOESN'T use more space. Squid works about 15 days without any
restart and it use only 3GB space and the cache size didn't grow. Is it
normal? I want to use more HDD cache Please advice

 

Thank you in advance