Dear Team, I have configure squid 3.1 on Fedora core 12. my hardware configuration: CPU INFO: Intel(R) Xeon(R) CPU E5440 @ 2.83GHz RAM : 8 GB HDD : 160 GB The problem i m facing is when my http requests are above 130 hist per second the pages start browsing slow and time out i cant even access cachemanager. if the http hit rate is below 130 hist per second it fine. please check if my configuration is correct. sorry for my poor english. Thanks, Ananth B.R. my configuration is as fallows: ########### Start of squid.conf #created by ANANTH############# cache_effective_user squid cache_effective_group squid http_port 3128 transparent cache_dir ufs /var/spool/squid 16384 16 256 cache_access_log /var/log/squid/access.log cache_log /var/log/squid/cache.log cache_store_log none logfile_rotate 7 emulate_httpd_log on cache_mem 2 GB maximum_object_size_in_memory 512 KB memory_replacement_policy lru cache_replacement_policy lru maximum_object_size 64 MB hierarchy_stoplist cgi-bin ? acl QUERY urlpath_regex cgi-bin \? no_cache deny QUERY hosts_file /etc/hosts refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher: 1440 0% 1440 refresh_pattern . 0 40% 4320 #acl all src 0.0.0.0/0 ##Define your network below acl mynetwork src 192.168.106.0/24 # cbinetwork private acl mynetwork src 192.168.107.0/24 # cbinetwork private acl mynetwork src 192.168.110.0/24 # cbinetwork private acl mynetwork src 192.168.120.0/24 # cbinetwork private acl mynetwork src 192.168.121.0/24 # cbinetwork private acl mynetwork src 192.168.130.0/24 # cbinetwork private acl mynetwork src 192.168.150.0/24 # cbinetwork private acl mynetwork src 192.168.151.0/24 # cbinetwork private acl mynetwork src 10.100.101.0/24 # cbinetwork private acl manager proto cache_object acl localhost src 127.0.0.1/32 acl localhost src ::1/128 acl to_localhost dst 127.0.0.0/8 acl to_localhost dst ::1/128 acl purge method PURGE acl CONNECT method CONNECT acl Safe_ports port 80 # http acl Safe_ports port 21 # ftp acl Safe_ports port 443 # https acl Safe_ports port 1025-65535 #unregistered ports acl SSL_ports port 443 563 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 deny CONNECT !SSL_ports http_access allow localhost http_access allow mynetwork # http_access deny all http_reply_access allow all icp_access allow mynetwork # icp_access deny all visible_hostname proxy.xxx.xx coredump_dir /var/spool/squid ######## End of squid.conf ##########