Re: [squid-users] seemingly stupid question about cache_dir and TCP_HIT

B. Cook wrote:
> Trying to setup a small local proxy for testing..
>
> 2.7 Stable7 on FreeBSD 32bit
>
> here are the mem and cache entries from squid.conf..
>
> # memory options
> memory_pools off
> cache_mem 1024 MB
> maximum_object_size_in_memory 2 MB
>
> ## cache options
> cache deny all
> cache_dir null /tmp
> cache_access_log /var/log/squid/access.log
> cache_store_log none
> cache_log /var/log/squid/cache.log
> cache_mem 1024 MB
> no_cache deny nocache
> cache_effective_group squid
> cache_effective_user squid
>
> in short the TCP_HIT *never* happens..
>
> 341843 /var/log/squid/access.log
> 60M /var/log/squid/access.log
>
> and the log is rotated daily.. so we are using the proxy *heavily*..
>
> > grep -c TCP_HIT /var/log/squid/access.log
> 0
>
> > grep -c TCP_MISS /var/log/squid/access.log
> 327072
>
> is it because I have the cache_dir disable the reason for the 0 TCP_HITs?
If I understand correctly, you're only giving squid 1 GB worth of space
to store any cached objects (in memory). This is really small. The LRU
(least recently used) cleanup routine is probably deleting most objects
before they are requested again, since you have such a small space. It
does not surprise me that you are getting no hits.

Also, I think you should be searching for TCP_MEM_HIT. I think it will
only log a TCP_HIT if it pulls from a disk cache.
>
> Thanks in advance.
Received on Tue Dec 15 2009 - 18:09:00 MST