Re: [squid-users] Howto Clear Cache Periodicaly

From: nonama <sotongtaz@dont-contact.us>
Date: Wed, 12 Apr 2006 23:36:10 -0700 (PDT)

Hi,
I did some testing on the cache, with the config
below. So I'm expecting when it reached 89% of cache
usage, which is about 2581000kb , the old data will be
replaced. How can I see that happening?, because at
the moment the cache used size is still increasing.
and I also experienced slowness during surfing.

Appreciate member's input on this matter. TQ.

******************************************
[root@Squid squid]# du -ks cache
2582756 cache
********************************************

config..
##########################################
#
# Squid Configuration file.
##########################################

httpd_accel_host virtual
httpd_accel_port 80
httpd_accel_with_proxy on
httpd_accel_uses_host_header on

visible_hostname Main-Data-Server
cache_effective_user squid
cache_effective_group squid
cache_mgr root@Main-Data-Server
cache_store_log /var/log/squid/store.log

cache_access_log /var/log/squid/access.log
cache_log /var/log/squid/cache.log
pid_filename /var/run/squid.pid

debug_options ALL,1 33,2

http_port 2020
icp_port 0
acl QUERY urlpath_regex cgi-bin \?
no_cache deny QUERY
cache_mem 8 MB
cache_dir ufs /var/spool/squid/cache 2900 16 256
cache_swap_low 88
cache_swap_high 89
redirect_rewrites_host_header off
acl localhost src 127.0.0.1/255.255.255.255
acl Safe_ports port 20 21 70 80 119 210 443 1025-65535
acl CONNECT method CONNECT
acl all src 0.0.0.0/0.0.0.0
acl snmppublic snmp_community public

#http_access deny Dangerous_ports

# No caching for local servers
#no_cache deny Local_servers

#acl dmz_servers dst 192.168.200.0 255.255.255.0
#no_cache deny dmz_servers

$
#always_direct allow FTP-PROTO

# SNMP

acl ftp proto ftp
snmp_port 3401
#snmp_access allow snmppublic localnet
snmp_access deny all

snmp_incoming_address 0.0.0.0
snmp_outgoing_address 0.0.0.0

acl Client_Access src 10.21.1.1-10.21.1.254
10.21.3.1-10.21.3.254 10.21.2.1-10.21.2.254

## No caching for pss.msctc.com.my
#acl pss.msctc.com.my url_regex
^http://pss.msctc.com.my/$
#no_cache deny pss.msctc.com.my

## mail.com
#acl mail.com url_regex ^http://.mail.com/$
#http_access allow mail.com

http_access allow ftp

## Deny user from accessing certain www
#acl Censored dstdomain dvrplayer.com playboy.com
www.dvrplayer.com www.playboy.com
#http_access deny Censored

#acl mail.com dstdomain .mail.com

http_access allow localhost
http_access allow Safe_ports
http_access deny CONNECT
http_access allow Client_Access
http_access deny all

#acl someserver dstdomain .someserver.com
#no_cache deny someserver

log_icp_queries off
buffered_logs on

#acl all src 0.0.0.0/0.0.0.0
never_direct allow all

--- Matus UHLAR - fantomas <uhlar@fantomas.sk> wrote:

> On 11.04.06 20:59, nonama wrote:
> > Based on the below, how does it actually removed
> the
> > old data when the cache hit the low_swap value.
>
> no, squid removes old data when the cache fill
> percentage hits
> cache_swap_high value and stops when it hits
> cache_swap_low value.
>
> > WIll it remove only selected old data in the cache
> (can we monitor this)
>
> look at cache_replacement_policy
>
> > and is there any impact to the users i.e slow
> performance?
>
> No, unless there's something wrong with your system.
>
> > Sorry, I' also a newbie in SQUID and reading from
> the
> > FAQ make me more confused. Really need more
> > experienced person to explain it.
>
> did you try reading default config file first?
>
> --
> Matus UHLAR - fantomas, uhlar@fantomas.sk ;
> http://www.fantomas.sk/
> Warning: I wish NOT to receive e-mail advertising to
> this address.
> Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek
> reklamnu postu.
> How does cat play with mouse? cat /dev/mouse
>

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Received on Thu Apr 13 2006 - 00:36:21 MDT

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