Re: [squid-users] Surfing hangs after period of time

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@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

Amos

-- 
Please use Squid 2.6.STABLE19 or 3.0.STABLE4