Usrbich wrote:
Hi2all!
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:
http_port 10.19.2.3:8080
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
Pretty low for a machine with 1+ GB RAM.
You could probably bump this up to 128 or 256 without trouble. That
would let a lot more happen in memory and bypass any storage slow-down.
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
dns_nameservers 10.19.2.3 195.29.149.196
hosts_file /etc/hosts
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl to_localhost dst 127.0.0.0/8
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
acl CONNECT method CONNECT
http_access allow all
First thing:
with the above line no other controls you wrote below will ever work.
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
acl zbw_network src 10.19.0.0/16
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@xxxxxxxxxxxx
mail_from administrator@xxxxxxxxxxxx
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
Amos
--
Please use Squid 2.6.STABLE19 or 3.0.STABLE4
