[squid-users] Surfing hangs after period of time

From: Usrbich <ivan.tuda@dont-contact.us>
Date: Tue, 29 Apr 2008 23:45:17 -0700 (PDT)


My users are experiencing problems with squid few hours after it starts.
I have following configuration: P4 3GHz, 1.1 GB RAM, CentOS, Squid 2.6. This
is a virtual machine and also a DNS server.
Number of active users at one time is about 40-50. The problem is, when I
start Squid, it works fine for couple of hours, and then the behaviour from
the client side is that pages stop to download 10-20 secs, like everything
stops, then it starts back and so on. When it stops, I hit refresh button
and then it starts to download again. In that time, my free memory is around
400MB, that's some 45%, it isn't swapping, cpu is low. I believe my
configuration is wrong, and need some help tunning it. Parameters are
majorly by default values. So, I attach my squid.conf:


hierarchy_stoplist cgi-bin ?

acl QUERY urlpath_regex cgi-bin \?
cache deny QUERY

acl apache rep_header Server ^Apache
broken_vary_encoding allow apache

cache_mem 32 MB

cache_swap_low 90
cache_swap_high 95

maximum_object_size 4096 KB

memory_replacement_policy lru

cache_dir ufs /var/spool/squid 1500 16 256

access_log /var/log/squid/access.log squid

cache_log /var/log/squid/cache.log

cache_store_log /var/log/squid/store.log

pid_filename /var/run/squid.pid

check_hostnames on


hosts_file /etc/hosts

refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320

acl all src
acl manager proto cache_object
acl localhost src
acl to_localhost dst
acl SSL_ports port 443
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 # https
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
acl Safe_ports port 1025-65535 # unregistered ports
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http

http_access allow all
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports

acl zbw_network src

http_access allow zbw_network
http_access allow localhost
http_access deny all

http_reply_access allow all

icp_access allow all

cache_mgr administrator@zbw.intranet

mail_from administrator@zbw.intranet

mail_program postfix

visible_hostname nameserver.zbw.intranet

snmp_port 1234

delay_class 1 2

delay_access 1 allow zbw_network
delay_access 1 deny all

delay_parameters 1 -1/-1 128000/1640000

coredump_dir /var/spool/squid

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Received on Wed Apr 30 2008 - 06:45:23 MDT

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