Hello, There is a formula in squid-cache.org page to calculate the number of first and second level directories. How does this decision differs or let me say, when we have reiserfs file system on cache_dir, do we add any factor to this formula? You know reiserfs doesnt have linear search algorithm and its performance is different when large amount of files exist in a directory. I am asking this question because I have seen a squid installation which has 3GB of cache_dir having the following configuration: cache_dir aufs /var/spool/squid 3072 60 312 Isn't this too large for a 3GB of cache_dir which is a reiserfs file system. I will test performance difference when I decrease the first level number of directories but before that I would like to get your opinions. If you have any ideas, I will be glad to hear them. Regards.