[squid-users] Browsing slow after adding squid proxy.

Hi.
Been a long time since I last looked at a squid proxy. After add a
proxy to the network , browsing seems to have slowed considerably. I
have build a squid proxy , this is configured into the network on via
our Sonicwall using the proxy feature. When I looked into the
configuration I did a few optimizations based on what I found on a
couple of websites. All though I opted not to tweak the OS more than
increase the ulimit as I would not expect it to be required given the
hardware. It is running out of a SSD drive.

When I run top the box is idle for the most part. there are about 100
users on this site.

So my question is what may I have configured incorrectly or missed
that would help?

The hardware is :

4 Gig Ram
Intel(R) Xeon(R) CPU E3110 @ 3.00GHz (dual core)
hard disk is SSD 32 GB

The / file system is ext3
The /var system is ext4 (cache is /var/spool/squid).

The OS is Linux Ubuntu 10 LTS

the squid configuration file looks like

acl all src all
acl manager proto cache_object
acl localhost src 127.0.0.1/32
acl to_localhost dst 127.0.0.0/8 0.0.0.0/32
acl localnet src 192.168.0.0/16 # TO BE correctly defined
acl SSL_ports port 443 # https
acl SSL_ports port 563 # snews
acl SSL_ports port 873 # rsync
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 Safe_ports port 631 # cups
acl Safe_ports port 873 # rsync
acl Safe_ports port 901 # SWAT
acl purge method PURGE
acl CONNECT method CONNECT
http_access allow manager localhost
http_access deny manager
http_access allow purge localhost
http_access deny purge
http_access deny !Safe_ports
http_access allow CONNECT
http_access deny CONNECT !SSL_ports
http_access allow localnet
http_access allow localhost
http_access deny all
icp_access allow localnet
icp_access deny all
http_port 3128
hierarchy_stoplist cgi-bin ?
cache_mem 2048 MB
maximum_object_size_in_memory 256 KB
cache_replacement_policy heap LFUDA
cache_dir aufs /var/spool/squid 10000 23 256
maximum_object_size 64 MB
cache_swap_low 90
cache_swap_high 95
access_log /var/log/squid/access.log squid
buffered_logs on
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern (Release|Package(.gz)*)$ 0 20% 2880
refresh_pattern . 0 20% 4320
quick_abort_min 0 KB
quick_abort_max 0 KB
acl shoutcast rep_header X-HTTP09-First-Line ^ICY.[0-9]
upgrade_http0.9 deny shoutcast
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
extension_methods REPORT MERGE MKACTIVITY CHECKOUT
half_closed_clients off
always_direct allow all
hosts_file /etc/hosts
memory_pools off
coredump_dir /var/spool/squid

Thanks
G
Received on Tue Jul 19 2011 - 21:13:45 MDT