[squid-users] Improve flash loading time

Hello list,

I am a squid newbie, but i am working on it. So please forgive my lack of knowledge.

Sometimes several flash videos don't load or it takes a long time for starting the video.
I have read that dns resolution is often a problem for long loading times. But
DNS works fine, the squid server isn't busy and the flash browser plugin is up to date.

As far as i know squid has a really good debug log. But as long as i don't know what i am searching for, it is not easy for me to identify/solve this problem.

Maybe somebody can give me a hint?

I am using squid 3 from ubuntu 10.04 repositories, havp as parent proxy and authentication via ADS.
It is a virtual machine on vSphere5. 2gb ram, raid 10 for /var/spool/squid3.

Here is my squid.conf:

cache_mem 64 MB
maximum_object_size 10000 KB
maximum_object_size_in_memory 128 KB
cache_replacement_policy heap LFUDA
memory_replacement_policy heap GDSF
cache_dir aufs /var/spool/squid3 8000 256 256
dns_nameservers 10.4.1.20
cache_peer localhost parent 8899 0 no-query no-digest
url_rewrite_program /usr/bin/squidGuard -c /etc/squid/squidGuard.conf
url_rewrite_children 20
cache_effective_user proxy
error_directory /usr/share/squid3/errors/de-de
auth_param ntlm program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-ntlmssp
auth_param ntlm children 20 startup=0 idle=1
auth_param basic program /usr/bin/ntlm_auth --helper-protocol=squid-2.5-basic
auth_param basic children 5
auth_param basic realm Domain Proxy Server
auth_param basic credentialsttl 2 hours
auth_param basic casesensitive off
authenticate_cache_garbage_interval 10 seconds
authenticate_ttl 300 seconds
external_acl_type nt_group ttl=5 children=5 %LOGIN /usr/lib/squid3/wbinfo_group.pl
acl INTERNET_SQUID external nt_group internet
acl snmptest snmp_community public
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 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 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
snmp_port 3401
snmp_access allow snmptest localhost
snmp_access deny all
http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost
http_access allow INTERNET_SQUID
http_access deny all
icp_access deny all
htcp_access deny all
http_port 3128
hierarchy_stoplist cgi-bin ?
access_log /var/log/squid3/access.log squid
cache_log /var/log/squid3/cache.log squid
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern (cgi-bin|\?) 0 0% 0
refresh_pattern . 0 20% 4320
icp_port 0

Thanks a lot and have a good time!

--
Marcel