1.1.19 / Digital Unix 4.0 strange happenings

I have a strange problem with my file system.

I am using squid 1.1.19 on a DEC Alpha running Digital UNIX 4.0.B

cachemgr tells me we are xfering about 1.8Gb per day with 25% hit rate.

I am using one cache area /usr/local/cache2 with the following params:

cache_swap 3000
cache_swap_low 95
cache_swap_high 96

When I do a df -k I get the following results:

# df -k
Filesystem 1024-blocks Used Available Capacity
Mounted on
/dev/rz0a 134760 69085 52199 57% /
/proc 0 0 0 100% /proc
/dev/rz0h 615786 358718 195489 65% /usr
/dev/rz1a 490336 246655 194647 56% /var
/dev/rz1g 3084909 1 2776417 1%
/usr/local/cache2
/dev/rz2a 513129 353951 107865 77%
/usr/local
#

Notice /usr/local/cache2 has used only 1Kb.

When I do a du on the cache2 directory I get the following results:

# du -s /usr/local/cache2
598062 /usr/local/cache2
#

Hmmmmmm.

Yes the files are actually there. Files are getting stored and
retrieved.

But can someone enlighten me as to what is really going on?

cheers.

-- 
Merv Connell
Information Technology Division.  CQU   Ph. 61 79 309222 Fax. 61 79
309254