> right, cache partition size is 15gb and we have created .... > > cache_dir diskd /cache2/cache1 7500 > cache_dir diskd /cache2/cache2 7500 > > > Is this fine? or we have to leave some space on cache2 partition , > currently 7500 + 7500 = 15000 all the partition space > what is the good partice? > I would advise to only specify one cachedir per partition, it does not make much sense to define two, in performance terms (e.g). Then make it somewhat smaller as the available partition size and you will be fine as in : cache_dir diskd /cache2/total_cache 13000 Note that squid by itself will keep some free space within the specified cache dir. These values are controlled by : cache_swap_low and cache_swap_high settings; check squid.conf.default (comments), for further explanations. M.