I tried by disabling internal dns in squid. Still i am seeing the same problem. What else can be looked at ? Its really makes user experience bad if he tries URL for the first time.
Regards, Saravanan N On Thu, Oct 22, 2015 at 7:34 PM, SaRaVanAn <saravanan.nagaraja...@gmail.com> wrote: > I am using Squid version 3.1.20 running on Intel I7 processor with 16GB > RAM. Even on connecting a single client I could able to reproduce this > problem. > > 2015/10/22 20:34:23.146| ipcache_nbgethostbyname: Name 'mail.com'. > <<<<<<<<<<<<<<<<<<<<<<<<<<<< DNS start time > 2015/10/22 20:34:23.146| ipcache_nbgethostbyname: MISS for 'mail.com' > 2015/10/22 20:34:23.146| cbdataLock: 0x7f9c3f4ca628=2 > 2015/10/22 20:34:23.146| idnsALookup: buf is 26 bytes for mail.com, id = > 0x7a4f > 2015/10/22 20:34:23.146| cbdataLock: 0x7f9c3f46df28=1 > 2015/10/22 20:34:23.146| comm_udp_sendto: Attempt to send UDP packet to > 8.8.8.8:53 using FD 8 using Port 46787 > 2015/10/22 20:34:23.146| event.cc(343) schedule: schedule: Adding > 'idnsCheckQueue', in 1.00 seconds > 2015/10/22 20:34:23.146| StoreEntry::unlock: key > '0F71D6DA8407C509D35DA6ADB5BD52BD' count=2 > > 2015/10/22 20:34:24.114| idnsRead: FD 8: received 84 bytes from 8.8.8.8:53 > 2015/10/22 20:34:24.114| idnsGrokReply: ID 0x7a4f, 0 answers > 2015/10/22 20:34:24.114| idnsGrokReply: mail.com has no AAAA records. > Looking up A record instead. > 2015/10/22 20:34:24.114| comm_udp_sendto: Attempt to send UDP packet to > 8.8.8.8:53 using FD 8 using Port 46787 > 2015/10/22 20:34:24.114| comm_udp_recvfrom: FD 8 from 8.8.8.8:53 > 2015/10/22 20:34:25.064| idnsRead: FD 8: received 226 bytes from > 8.8.8.8:53 > 2015/10/22 20:34:25.064| idnsGrokReply: ID 0xe9c1, 1 answers > 2015/10/22 20:34:25.065| dns_internal.cc(1152) idnsGrokReply: Sending 1 > DNS results to caller. <<<<<<<<<<<<<<<<<<<<<<<<<<< DNS end time > > It looks like almost 2 seconds spent in resolving DNS for an URL. I guess > it could be the reason. Also it tries for IPv6 first even i configured > dns_v4_first option. > It looks bad. Suppose if an URL has many embedded pages a delay of 2 > second is added to total page load time for each embedded page request. > > Regards, > Saravanan N > > On Thu, Oct 22, 2015 at 3:54 PM, Eliezer Croitoru <elie...@ngtech.co.il> > wrote: > >> What version of squid are you using now? >> Squid 3.1.20 is very old and it is recommended to use newer versions. >> If you are having specific troubles I think you figure out the issues >> pretty fast. >> What hardware are you using for you squid? is it a VM? RAM? CPU?Disk? >> How many clients? Have you used the squid cache manager interface? >> >> My first suggestion it to try and use squid 3.4.14 just to make sure you >> are on something more current then 3.1.20. >> >> Eliezer >> >> On 22/10/2015 21:47, SaRaVanAn wrote: >> >>> Hi , >>> we have been using squid 3.1.20 comes with debian wheezy 7. We could see >>> there is a peformance hit in http traffic when we use Squid. >>> >>> For each HTTP GET request coming from client to proxy server, Squid takes >>> nearly 2 seconds to generate HTTP GET in order to establish a connection >>> with server. >>> >>> There is always a ~2 second delay between the request coming to our >>> system >>> and going out of Squid. Suppose if a page has lot of embedded URL's it's >>> taking more time with squid in place.Suppose If I disable squid the page >>> loads very fast in client browser. >>> >>> What could be the reason? Do I need to tweak any configuration for this? >>> The first page request always loads slow with Squid. >>> >>> >>> *Configuration*http_port 3128 >>> >>> http_port 3129 tproxy >>> http_port 80 accel defaultsite=example.com >>> acl manager proto cache_object >>> acl localhost src 127.0.0.1/32 ::1 >>> acl to_localhost dst 127.0.0.0/8 0.0.0.0/32 ::1 >>> acl QUERY urlpath_regex cgi-bin \? >>> cache deny QUERY >>> acl denied_status_404 http_status 404 >>> deny_info http://example.com/ denied_status_404 >>> http_reply_access deny denied_status_404 >>> acl denied_status_503 http_status 503 >>> deny_info http://example.com denied_status_503 >>> http_reply_access deny denied_status_503 >>> acl SSL_ports port 443 >>> acl Safe_ports port 80 >>> acl Safe_ports port 21 >>> acl Safe_ports port 443 >>> acl Safe_ports port 70 >>> acl Safe_ports port 210 >>> acl Safe_ports port 1025-65535 >>> acl Safe_ports port 280 >>> acl Safe_ports port 488 >>> acl Safe_ports port 591 >>> acl Safe_ports port 777 >>> acl CONNECT method CONNECT >>> acl PURGE method PURGE >>> http_access allow PURGE localhost >>> http_access deny PURGE >>> http_access allow manager localhost >>> http_access deny manager >>> http_access deny !Safe_ports >>> http_access deny CONNECT all >>> http_access allow all >>> icp_access allow all >>> tcp_outgoing_address x.y.z.5 >>> acl VIDEO url_regex ^http://example\.examplevideo\.com >>> cache allow VIDEO >>> cache_mem 100 mb >>> maximum_object_size_in_memory 10 kb >>> memory_replacement_policy heap LFUDA >>> cache_replacement_policy heap LFUDA >>> cache_dir aufs //var/logs/cache 6144 16 256 >>> store_dir_select_algorithm round-robin >>> maximum_object_size 51200 kb >>> cache_swap_low 70 >>> cache_swap_high 80 >>> access_log //var/logs/access.log squid >>> cache_store_log none >>> logfile_rotate 1 >>> mime_table //var/opt/abs/config/acpu/mime.conf >>> pid_filename /var/run/squid3.pid >>> strip_query_terms off >>> cache_log //var/logs/cache.log >>> coredump_dir //var/cache >>> acl apache rep_header server ^apache >>> refresh_pattern -i ^http://.wsj./.* 10 200% 10 override-expire >>> override-lastmod reload-into-ims ignore-reload >>> refresh_pattern -i \.(gif|png|jpg|jpeg|ico)$ 480 100% 480 override-expire >>> override-lastmod reload-into-ims >>> refresh_pattern -i \.(htm|html|js|css)$ 480 100% 480 override-expire >>> override-lastmod reload-into-ims >>> refresh_pattern ^ftp: 1440 20% 10080 >>> refresh_pattern ^gopher: 1440 0% 1440 >>> refresh_pattern -i (/cgi-bin/|\?) 0 0% 0 >>> refresh_pattern . 0 20% 4320 >>> quick_abort_min 0 kb >>> quick_abort_max 0 kb >>> negative_ttl 1 minutes >>> positive_dns_ttl 1800 seconds >>> store_objects_per_bucket 100 >>> forward_timeout 2 minutes >>> shutdown_lifetime 2 seconds >>> visible_hostname x.y.z.3 >>> server_persistent_connections off >>> dns_nameservers x.y.z.1 x.y.z.2 >>> ipcache_size 8192 >>> fqdncache_size 8192 >>> memory_pools off >>> >>> Regards, >>> >>> Saravanan N >>> >>> >>> >>> _______________________________________________ >>> squid-users mailing list >>> squid-users@lists.squid-cache.org >>> http://lists.squid-cache.org/listinfo/squid-users >>> >>> >> _______________________________________________ >> squid-users mailing list >> squid-users@lists.squid-cache.org >> http://lists.squid-cache.org/listinfo/squid-users >> > >
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